Blogs/News/PSAs

SEPLITE ® Strong Base Anion Exchange Resin

The Strong Base Anion Exchange Resin (sba resin) is the type of ion exchange resin with functional group of quaternary ammonium, which is strongly alkaline and dissociates just like NaOH and KOH.

In chemical structure, there are two types of strong base anion exchange resin with different alkalinity strengths, Type Ⅰ with a trimethyl ammonium group, Type Ⅱ with a dimethylethanol ammonium group. Type Ⅰ shows a higher alkaline than Type Ⅱ. Compared with type 1 strong base anion, this resin is more suitable for applications needing good rinsing performance and excellent regeneration efficiency.

The strong base anion  shows an excellent physical and chemical stability, which is capable of exchanging the different anion under a wide range of pH.

The Strong Base Anion Exchange Resin is mainly used in water treatment, to produce high purity demineralized water, making use of the ability to adsorb anions strongly.

Typical Applications For Strong Base Anion Exchange Resins

Sugar purification

Antibiotics purification

Organic removal

Industrial demineralization

Silica removal

Pure water preparation

Metal extraction

Condensate deionization

Approvals

Kosher Certificate

Halal Certificate

FDA registeration

WQA Gold Seal Certificate

REACH

Category List

SEPLITE SA400 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA470 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA471 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA473 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA458 Gel Type I,Strong base, Acrylic. Cl- Form

SEPLITE MA900 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE MA901 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE MA903 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE MA915 Macroporous Type I,Strong base, Styrene, Cl- Form, fine mesh

SEPLITE MA958 Macroporous Type I,Strong base, Acrylic Cl- Form

SEPLITE MA970 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE SA420 Gel Type II,Strong base, Styrene, Cl- Form

SEPLITE MA920 Macroporous Type II, Strong base, Styrene,Cl- Form

Sunresin is one of the most professional anion exchange resin suppliers in China. Just contact us!

The pcd wire drawing die blanks are produced under ultra-high temperature and ultra-high pressure. It consists of diamond powder and metal catalyst (Cobalt). It features high wear resistance, hardness and thermal conductivity, high mechanical strength, and tenacity. Diamond die blanks are mainly for drawing a wide range of wire such as copper, aluminum, nickel, stainless steel etc. 

As one of the most professional wire drawing dies suppliers in China, E-Grind provides two series of diamond wire drawing dies: CDB Series and TDBY Series. 5 grades of grain size available: 3 microns, 5 microns, 10 microns, 25 microns and 50 microns. 

CDB Series: self-supported die blanks, for all types of wire drawing, especially where cost is the main concern.

CDBL Series: Self-supported Die Blanks (Hexagonal)

CDBY Series: Self-supported Die Blanks (Round)

TDBY Series: tungsten carbide supported die blanks. It is for drawing with high intensity.

Tungsten Carbide supported Die Blanks (Round)

ADDMA: American Diamond Die Manufactures' Association
D: Total Blank Diameter                     d: Diamond Diameter
T: Diamond Thickness

E-Grind Abrasives is professional in diamond and CBN products with over 50 years experience. Contact us to know more abrasive powder types!

Energy Saving Small Machine Room Passenger Elevator

Energy Saving

Sail Intelligent small passenger lift use permanent magnetic synchronous gearless traction machine, featuring high effective and energy saving. It saves by 33% energy than the gear traction machine for the same capacity. The best design comprising special designed control cabinet with small size and the most advanced IGBT with lower loss makes the layout of the machine room perfect.

Compact Design

Sail Intelligent small machine room passenger elevator is a kind of elevator with new concept, which is for improving the construction value. The area of machine room can be reduced by more than 40%than traditional elevator, so it saved construction space and increased useful space.

Machine Roomless Passenger Elevator

It Saves Energy and Space

Sail Intelligent machine room-less passenger elevator knows very well of environment protection concept. It saves energy and reduces consumption. It enhances design freedom. Compared with geared elevator with same load rating, it saves over 33% of energy. Sail Intelligent machine room-less passenger elevator breaks through a must of machine room. It provides limited space in modern building with perfect creativeness.

Low Noise, Tiny Vibration

Comprising the best components, the reasonable structure design and the high technology of vibration reducing and noise controlling can disperse and counteract the irregular vibration of the car, which make car run quietly.

As one of the most professional passenger lift suppliers in China, we have high quality passenger lift for sale. Don’t hesitate to contact us!

SEPLITE ® Strong Base Anion Resin

The Strong Base Anion Exchange Resin( SBA resin)is the type of ion exchange resin with functional group of quaternary ammonium, which is strongly alkaline and dissociates just like NaOH and KOH.

In chemical structure, there are two types of strong base anion exchange resin with different alkalinity strengths, Type Ⅰ with a trimethyl ammonium group, Type Ⅱ with a dimethylethanol ammonium group. Type Ⅰ shows a higher alkaline than Type Ⅱ. Compared with type 1 strong base anion, this resin is more suitable for applications needing good rinsing performance and excellent regeneration efficiency.

The strong base anion exchanger shows an excellent physical and chemical stability, which is capable of exchanging the different anion under a wide range of pH.

The Strong Base Anion Exchange Resin is mainly used in water treatment, to produce high purity demineralized water, making use of the ability to adsorb anions strongly.

Typical Applications For Strong Base Anion Exchange Resins

Sugar purification

Antibiotics purification

Organic removal

Industrial demineralization

Silica removal

Pure water preparation

Metal extraction

Condensate deionization

Approvals

Kosher Certificate

Halal Certificate

FDA registeration

WQA Gold Seal Certificate

REACH

Category List

SEPLITE SA400 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA470 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA471 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA473 Gel Type I,Strong base, Styrene Cl- Form

SEPLITE SA458 Gel Type I,Strong base, Acrylic. Cl- Form

SEPLITE MA900 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE MA901 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE MA903 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE MA915 Macroporous Type I,Strong base, Styrene, Cl- Form, fine mesh

SEPLITE MA958 Macroporous Type I,Strong base, Acrylic Cl- Form

SEPLITE MA970 Macroporous Type I,Strong base, Styrene Cl- Form

SEPLITE SA420 Gel Type II,Strong base, Styrene, Cl- Form

SEPLITE MA920 Macroporous Type II, Strong base, Styrene,Cl- Form

Overview of PU Sandwich Panel
PU sandwich panel usually be named as polyurethane sandwich panel, PU color steel panel aas well as PU composite panel, and it has three layers, which contains double color steel sheet and the PU core, thus, it havs good insulation feature and smoothness.
Polyurethane material is a polymer material. Polyurethane is an emerging organic polymer material and is known as the “fifth largest plastic”. It is widely used in many fields of the national economy due to its excellent performance. PU Sandwich Panel applications  cover the fields like light industry, chemical, electronics, textile, medical science, construction, building materials, automotive, defense, aerospace, aviation and so on.
PU Features
1. Hard polyurethane has low thermal conductivity but good thermal performance. When the density of rigid polyurethane is 35-40 kg/m3, and the thermal conductivity is only 0.018~0.024w/(m.k), which is equivalent to half of EPS and the lowest thermal conductivity of all thermal insulation materials.
2. Rigid polyurethane has moisture and water resistance. The rigid polyurethane has a closed cell ratio over 90%, and it is a hydrophobic material. It does not increase the thermal conductivity due to moisture absorption and seep proof wall.
3. Rigid polyurethane fire, flame retardant and high temperature. Polyurethane is a flame-retardant self-extinguishing material after adding flame retardant. Its softening point can reach above 250℃. It will only decompose at higher temperature, in addition, polyurethane will be in its foam when burned. Carbon deposits form the surface, which helps to isolate the underlying foam. It can effectively prevent the spread of flame. Moreover, polyurethane does not generate harmful gases at high temperatures.
4. Due to the excellent thermal insulation performance of the polyurethane sheet, the thickness of the outer protective structure of the building can be reduced and the indoor use area can be increased.

As one of the most professional polyurethane sandwich panel suppliers in China, our PU Sandwich Panel has below advantages:

Production Advantages:
1. Better thermal insulation;
2. Light weight;
3. Easy to installation;
4. Good smoothness;
5. Water proof, wet proof;
6. No poison, no smell.

The Application of PU Sandwich Panel

PU sandwich panel applications: Food, Pharmaceutical, Electronics and etc.

Other Notes of PU Sandwich Panel

1.Payment: T/T, L/C.
2.Transportation: Shipping, Air Freight.
3.Packaging: Carton, Wooden Box.

Overview

The HPL panel (High-pressure laminate) 4 mm thick is a solid compound consisting of more than 40 layers of paper impregnated with melamine and phenolic resins. The sheet of HPL, measuring 1300x3050 mm, has a transparent finishing layer on both external sides that protects the decorative layer below. The central layer, dark brown, is composed of a series of Kraft papers impregnated with phenolic resins, pressed to 9 MPa at 150 °c. 

As one of the most professional hpl wall suppliers,the advantages of our HPL Sandwich Panel are as below：

Production Advantages:
1. Thermal insulation;
2. Fire resistance;
3. Easy to installation;
4. Nice smoothness;

Wonzone Advantages:
1.Wonzone has higher requirements on the quality and details of products such as the shape, the length, the width, the size and so on;
2. We fully understand of the market of the raw materials  in China, and our supplier provide excellent quality materials and the reasonable price to our company, so we also offer workable price for you.
3. We have been worked on cleanroom industry for 15 years, and we have our own factory. And our company has many professional technician. That's why we can offer cleanroom solutions and design plan.

The Application of HPL Sandwich Panel

Application: Pharmaceutical, Electronics and etc.

Other Notes of HPL Sandwich Panel

1.Payment : T/T, L/C.
2.Transportation : Shipping, Air Freight.
3.Packaging : Carton, Wooden Box.

Diamond is a mineral made of pure carbon and the hardest substance in the natural world. It can not only be processed into valuable jewelry but also has great potential in the industry. It features high thermal stability, high chemical stability, good electrical conductivity and good physical properties (excellent compressive strength, good heat dissipation, high anti-corrosive ability, low rate of heat expansion etc). It has high hardness and good abrasion resistance and can be widely used in cutting, grinding and drilling. Due to its high thermal conductivity and good electrical insulation, it can be used as a heat sink for semiconductor devices, it has excellent light transmission and corrosion resistance. It is also widely used in the electronics industry.

Nowadays Diamond becomes the most important industrial material and widely used in metallurgy, petroleum drilling, construction, mechanical processing, electronic industry, and aerospace industry.

Approximately 90% of diamonds used in various industries are manufactured synthetically.

Equipped with the advanced producing and testing machines and with more than 40 years experience, E-Grind provides all types of Synthetic Diamond powder with premium quality and competitive price. E-Grind is one of the most professional synthetic diamond manufacturers      in China.

EGrind Abrasives is professional in diamond and CBN products with over 50 years experience. We sincerely invite and welcome people from all around the world to invest and create more values together.

As one of the most professional cleanroom door panels suppliers, Our company's clean room doors include metal door (aluminum frame plus PCGI door), steel door (steel frame PCGI door) and HPL door (HPL sandwich panel and aluminum or steel frame). According to the switch mode of the door, it can be divided into pull/push door and sliding door.

Our sliding door for clean rooms are compatible with any level of clean room and can be customized to your needs. We use high quality steel to make the door and double seal on all sides to prevent leakage and contamination. We offer features such as custom sizes and colors, electronic locks and cleaning strips.

In order to form a complete set for all levels of clean room, purification room, dust-free room, trailer and other places uses color plate partition. Around double sealing, thermal insulation, heat insulation, sound insulation. Color plate or stainless steel plate can be used to customize different size of clean room steel door, cleanroom door locks, color of color steel, door strip and etc, all of which can be configured in accordance with the requirements.

Clean Room Aluminum Door

Our company's metal door series includes folding door and sliding doors, it's usually with aluminum door frames and PCGI door panels. Advantages of aluminum alloy door frame: Aluminum alloy profile has the characteristics of high strength, strong corrosion resistance, and not easy to be deformed. Under the premise of normal use, it will not be deformed in 5~8 years.

Clean Room Steel Door

Our steel door products are made of steel frame and PCGI door panels with very good flatness and fire resistance. Most electronics industry factories use this type of door, they can also be used in indoor compartment doors of other factories or used as outdoor doors. The steel door has high strength and fire resistance time of more than 1h, and is especially suitable for workshops and warehouses with high fire protection requirements.

Clean Room HPL Door
Clean room HPL door is made of HPL material, which is made up of aluminum door frame or steel door frame. The door plate is made up of double-layer HPL plate and sandwich material. It has a good appearance and together with the featyres of HPL boards, corrosion resistance, high-temperature resistance and so on. Clean room HPL door is commonly used in pharmaceutical factories, food factories, chemical factories and etc.

Clean Room Double Glass Window

Double glass window is a new type of building material with good heat insulation, sound insulation, beautiful appearance and reduced building weight. It is a high-performance sound-insulating glass made of two pieces (or three pieces) of glass, which is bonded with an aluminum alloy frame containing a desiccant by using a high-strength and high-air-tight composite adhesive. Double glass window is superior to ordinary double-layer glass, so it has been recognized by all countries in the world. Double glass window is to separate two or more pieces of glass with effective support and seal them at the periphery to form a glass layer. Glassware is placed in a dry gas space. Its main materials consist of glass, warm edge spacers, angled plugs, butyl rubber, polysulfide rubber, and desiccant.

Clean Room Single Glass Window

The single glass window consists of an aluminum frame and a single layer of tempered glass. Due to the transparent properties of glass, it is usually used as an observation window. Because there is only one layer of glass, the thermal insulation of the windows is not particularly good. It is commonly used in the partition walls of two rooms with similar temperatures.

Are you looking for  water chemistry testing equipment  ?

Hangzhou Zetian Technology Co., Ltd. is the only domestic water testing instruments manufacturer with five analysis technical platforms which are LED colorimetric platform, full spectrum colorimetric platform, cold atomic absorption colorimetric platform, anodic dissolution platform and electrode method platform. These five kinds of analysis platform can measure the common pollution factors in water, including COD, ammonia nitrogen, total phosphorus, total nitrogen and heavy metals such as copper, chromium, lead, zinc, mercury, arsenic, etc. At the same time, using the full spectrum colorimetric platform or anodic dissolution platform also can realize COD/ ammonia nitrogen integrated system, total phosphorus/ total nitrogen integrated system, and all kinds of heavy metal integrated system, etc.

The device used to measure water quality of Hangzhou Zetian Technology Co., Ltd. has been experienced years of on-site validation, stable and reliable, low failure rate.

Peristaltic Pump Tube:

The United States imported special rubber hose, long service life, a tube can use more than one year.

Sample Module:

Homemade sampling module uses the high pure PTFE material, disassembly easy to clean or replace, reliable operation, every channel is completely isolated.

Control System:

(1)Control solenoid valve uses non-contact electronic switch, no mechanical life.

(2) Homemade control unit, after years of verification, low fault rate, high reliability, modular design, low maintenance cost.

Instrument Protection-Grounding Design:

Instruments have high-level intelligence, such as reagents fault adding warning (especially H2SO4 used in COD, if it is not H2SO4, it is likely to lead digestion tube burst), leakage protection (if there is leakage, the instrument will report errors), pressure relief valve (making pressure in digestion tube within a certain range).

All the external interface and main circuit of equipment is in isolation, which makes the normal sample without the outside interference. Especially for unequal potential connection, its effect is particularly evident.

In analog circuits (measurement module) also made electrical isolation, which makes the minimum possible interference on measurement.

Measuring Parts:

Modulating optical measurement makes no influence of external light on measurement, it is more stable.

External Interface:

Largest configuration has 2×4-20 mA output, 4×4-20 mA input, 2 switch input, 2 switch output, can access the PH meter, flow meter, ss and other equipment, and can display on the main interface.

Technology Platform:

It has five measuring platforms, suitable for the needs of different applications.

HANGZHOU ZETIAN TECHNOLOGY, established in 2008, is one of the most professional   water quality monitoring equipment suppliers  in China. Welcome you to visit us if you are looking for water quality testing supplies  . Currently, we are looking for certificated distributor and OEM clients throughout the world. R&D cooperation is also welcomed. If you have any interest, please contact us!

Plastic Spray Bottles Description:

The bulk spray bottles wholesale is made of food grade PET. PET plastic has a highly symmetrical molecular structure and a certain crystallization orientation ability, so it has a high film-forming and formation.PET plastics have good optical properties and weather resistance, excellent abrasion resistance, abrasion resistance, dimensional stability and electrical insulation, great strength, good transparency, non-toxic, anti-permeability, light quality, high production efficiency, and better processing performance. The cap is made of pump sprayer design, which is suitable for a variety of occasions and comes with a protective cover. Easy to carry around.Suitable for the assembly of medical potions, perfume bottles, and other spray liquids. The company has advanced ERP management software, can efficiently and accurately deal with customer needs. As a leader in the industry, the company is committed to promoting the update and upgrading of plastic bottles, and pursuing the idea of safer, recyclable people living in harmony with nature. Support the customization of various sizes and colors, and provide customers with the order quantity, which can be delivered as soon as 1 week. What's more, we plastic bottle suppliers china also have a variety of closure options to match with your bottles. Contact us right now!

Plastic Spray Bottles Features:

Better Raw Materials

We Provide You With Reliable Products And High-Quality Service

high-quality bottle with FDA, airtight and water-proof

Befor your order, we can offer sample products.

Your logo can be printed, embossed, debossed.

Bulk per bag, offer customized package.

Offer custom design, shape, logo, package.

Safe, nontoxic, anti-dust, impermeable.

The pressure nozzle can spray the liquid in the bottle evenly

Plastic Spray Bottles Application

Suitable for a variety of applications including detergents and household chemicals, lubricating oil, chemicals, garden products, pet care, DIY, toiletries, personal health care.

Overview
The HPL panel (High-pressure laminate) 4 mm thick is a solid compound consisting of more than 40 layers of paper impregnated with melamine and phenolic resins. The sheet of HPL, measuring 1300x3050 mm, has a transparent finishing layer on both external sides that protects the decorative layer below. The central layer, dark brown, is composed of a series of Kraft papers impregnated with phenolic resins, pressed to 9 MPa at 150 °c. 

The Advantages of sandwich panels hpl:
Production Advantages:
1. Thermal insulation;
2. Fire resistance;
3. Easy to installation;
4. Nice smoothness;

Wonzone is a professional hpl wall suppliers, including sandwich panel, ceiling grid system, door and window system, pass box, air shower and etc. In the industry of Electronics, Pharmaceutical, Food, Military, Solar, Chemical and etc. work on cleanroom design, production for 15 years. we offer the plan and service for cleanroom and that is professional and economical.

We classified the paraffin wax with a melting point of 56 to 62 ℃ medium melting point paraffin wax. By oil content and the degree of refinement,  the crude versions fall into the slack wax category and contain oil content of 3% to 15%. After de-oiling, desulfurization and hydrogenation refining to remove impurities and discoloration, the oil content can 0.5%-2%. We normally separate them by semi refined paraffin wax and fully reply paraffin wax. Fully refined is the highest refinement, the oil content below 0.5% (for some high melt paraffin wax, the oil content may be below 0.75%). Semi refined paraffin waxes contain between 0.5 and 1.5% oil. Below we give you the product in this category together with their preference usage. If you didn't find the grade in below list, please send us inquiry.

We supply a variety of packaging formats. These include bulk liquid (via tank truck or railcar), slabs (10 lbs), free-flowing granules (packaged in bags), and free-flowing pastilles (packaged in bags).

Fully Refined Paraffin Wax

Semi Refined Paraffin Wax & Slack Wax

Storage

Please store products in a cool, dry location, away from sources of intense heat, incompatible materials, water, heat, and flame.

Long-distance transportation or hot atmosphere may have cracked, that does not affect the quality of products.

If you are wondering about how to melt paraffin wax,don’t hesitate to contact.

We are professional semi electric stacker suppliers and factory in China.We can produce the product according to your requirements.

Semi-electric stacker Features

1. High quality hydraulic pump station and seal ring

2. Heavy-duty mast material

Semi-electric Stacker CDD1016BA Parameters

Application of VAM

used in the production of polyvinyl alcohol, coatings and adhesives.It is an important organic chemical material.Vinyl acetate by its polymerization or copolymerization with other monomers,mainly use for the production of polyvinyl acetate (PVAc),polyvinyl alcohol (PVA),vinyl acetate - ethylene copolymer emulsion (VAE) or vinyl acetate copolymer (EVA) resin,vinyl chloride copolymer (EVC), acetal resins such as derivatives. These derivatives usage is very extensive and can be used for bonding agent, and glue pharmaceutical of paper or fabric, coating, ink, leather processing, fibre processing, emulsifier, water soluble film, soil conditioner,.VAM is an important synthetic material monomer. with the progress of science and technology, other downstream products and new applications are still in constant development.

Vinyl acetate is used to make other  industrial chemicals.These chemicals are used mainly to make glues for the packaging and building industries.They are also used to make paints,textiles,and paper.Vinyl acetate is also used as a coating in plastic films for food packaging and as a modifier of food starch.

Physical properties of VAM

Melting point: -93 °C

Boiling point: 72-73 °C (lit.)

Density: 0.934 g/mL at 25 °C (lit.)

Chemical properties: It's a colorless flammable liquid with a sweet ether smell. It's miscible with ethanol, soluble in ether, acetone, chloroform, carbon tetrachloride and other organic solvents, and insoluble in water.

Uses of VAM

Vinyl acetate is the main raw material for the production of synthetic fiber vinylon. Self-polymerization of vinyl acetate or copolymerization with its monomers creates polyvinyl alcohol (PVA), vinyl acetate copolymer (EVA), vinyl chloride copolymer (EVC), vinyl acetate-acrylonitrile fiber, and vinyl acetate-acrylate copolymers, which have important industrial applications and are widely used as adhesives, architectural coatings, textile sizing agents and finishing agents, paper reinforcements and used for the manufacture of safety glass. Ethyl acetate reacted with ethanol and bromine produces bromoacetaldehyde diethyl acetal, which is the intermediate of the drug methimazole.

Invasive route of VAM

inhalation, ingestion, and percutaneous absorption.

Health hazards of VAM

This product is irritating to eyes, skin, mucous membranes and upper respiratory tract. Prolonged exposure creates an anesthetic effect, thus rapid withdraw from its leaking and contaminated areas to safe areas and isolation and strict access restriction are necessary. In addition, fire should be separated. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and protective fire protection clothing. Cut off sources of leakage as much as possible to prevent it floating into sewers, flood drains and other restricted spaces.

For a small amount of its leakage, vinyl acetate monomer can be absorbed with sand or other non-combustible materials. It can also be scrubbed with a non-combustible dispersant, which will be later diluted and poured into the waste water system.

For a large amount of its leakage, it can be dealt with by constructing embankments or digging pits for containment. The spray-like water is used to cool and dilute its vapor, protecting the on-site personnel and diluting the vapor into incombustibles. Use explosion-proof pump to transfer it to the tanker or special collector and have it recycled or transported to waste disposal sites for treatment.

Longfeng is one of the leading vinyl acetate monomer suppliers in China. RFQ today!

Paper clip making machine is used for making paper clips, include nickel plating type and plastic covered type. It could produce different series of paper clip: RWB series, RWC series, RWH series and other customized types. Our clip making machine suppliers adopt two sets of straightening devices to ensure that the feeding steel wire is straight and the finished paper clips are smooth and beautiful. The electric control cabinet is equipped with a protective cover to protect the motor and electrical parts. Our machine if full-automatic, with safe and convenient operation.

What is the paper clip use for?

Paperclip is a small and useful tool which can help you connect documents or paper in your work life. You can find it everywhere due to it is so useful. In addition to the use of conventionally fixed documents, paper clips also can be used to make a variety of beautiful handicrafts, like a necklace, tower, small animal and so on. Paperclip has various shapes, normal type is like round, triangle and square, they also could be designed to various shapes, such as flower, tree, car, animal and so on. According to the thickness of paper, the size of paper clips is also different.

CANDID paper clip making machine advantage

CANDID paper clip making machine is suitable for making various types of paper clip with Nickel steel wire or PVC coated steel wire as raw materials. We can design paper clip making machine according to different customer’s requests. Paperclip making machine is a single machine, our customer just need a small place and can operate it according to our video step by step. Paperclip is produced through straightening, cutting and forming the steel wire. Meanwhile, it's easy to operate, one worker could operate two or three machines. Besides, the machine is equipped with a reversible safety cover and has stable performance, low noise, and high efficiency.

CANDID service advantage

CANDID paper clip making machine has already exported to many countries, such as Vietnam, India, Algeria, Russia, Nepal and so on. CANDID is not just selling the machine, we also provide good service. According to customer's requirement, we will supply accurate quotation and recommend the most suitable eraser machine. Meanwhile, we will offer the running video and operation manual to our customer to help them operate the machine. We also can send the engineer to their country for installation and training until they can operate it independently. If our customers have any problem, we will try our best to solve it.

Uses of N-Methyl Pyrrolidone (NMP)

 1-Methyl-2-pyrrolidinone (NMP) is a polar aprotic solvent that has the advantages of low toxicity, high boiling point, outstanding solvency, strong selectivity, and good stability. It is widely used in purification of aromatic hydrocarbon extraction, acetylene, olefins, and diolefins.

 It is used in industrial cleaning, and it serves as a solvent for the production of pesticides, engineering plastics, coatings, synthetic fibers, and integrated circuits.

 It can also be used as an industrial cleanser, dispersant, dye, lubricant, and antifreeze.

 1-Methyl-2-pyrrolidinone is an excellent solvent, widely used in aromatics extraction, lubricating oil refining, acetylene enrichment, butadiene separation, and synthesis gas desulfurization.

 It is used in gas desulfurization, lubricating oil refining, lubricating oil antifreeze, olefin extraction, and as a solvent for insoluble engineering plastics polymerization.

 It can be used in herbicide, to clean insulation materials, semiconductor industry precision instruments and circuit boards, to recycle PVC exhaust, as a detergent, dye supplement and dispersing agent.

 It is used in mediums for polymerization reactions such as engineering plastics and aramid fiber.

 1-Methyl-2-pyrrolidinone is used as a polyvinylidene fluoride solvent and electrode auxiliary material for lithium-ion batteries.

 high purity grade for ICP-MS detection.

For peptide synthesis.

CAS No: 872-50-4

N-methyl pyrrolidone (NMP) is a colorless, transparent oily liquid with a slight amine odor. It is soluble in water, alcohols, ethers, esters, ketones, halogenated hydrocarbons, aromatic hydrocarbons, and castor oil. It has low volatility, good thermal stability, and chemical stability, and can evaporate with water vapor. It has hygroscopicity and is sensitive to light. This product is an important chemical raw material and a highly selective and stable polar solvent. It has low toxicity, a high boiling point, and strong dissolving power. It is non-flammable, biodegradable, recyclable, safe to use and suitable for a variety of formula uses and other advantages. NMP is a polar aprotic solvent with low toxicity, high boiling point, and excellent dissolving power. Its advantages lie in the strong selectivity and stability. It is widely used in the extraction of aromatics, purification of acetylene, olefins, diolefins, solvents for polyvinylidene fluoride, electrode auxiliary materials for lithium-ion batteries, synthesis gas desulfurization, and lubricating oil refining. It can be used as antifreeze lubricants, olefin extractants, solvents for insoluble engineering plastics polymerization, agricultural herbicides, and insulating materials, and in the integrated circuit manufacturing, semiconductor industry precision instruments, circuit board cleaning, PVC tail gas recovery, cleaning agents, dye auxiliaries, dispersants, etc. It is also used as a solvent for polymers and media for polymerization, such as engineering plastics and aramid fibers. It can also be used in pesticides, medicines, and detergents.

Its main uses are as follows：

 Used for the concentration of acetylene and extraction of butadiene, isoprene, and aromatic hydrocarbons.

 Used for refining lubricating oils.

 Used as polymerization solvents for insoluble engineering plastics (polyphenylene sulfide and polyimide) and aramid fibers.

 Used in electronic insulation materials and lithium-ion battery.

 Used in high-grade coatings, inks, pigments.

 Used as pesticide auxiliaries.

 Used as cleaning agents for deoiling, degreasing, dewaxing, polishing, rust, paint stripping, etc.

 Used as artificial kidney membrane fluid and seawater desalination membrane fluid.

Longfeng is one of the leading nmp solvent suppliers in China, RFQ today!

Origin of new material development

0.8mm series copper-clad round wire is a new type of material developed by our Company to replace pure copper. Because it has the advantages of high strength, low price, high corrosion resistance and high conductivity of copper, and meanwhile its comprehensive performance is high and its cost is more economical than pure copper grounding device, it has been widely used in UHV lines, petrochemical industry, nuclear power and high-speed railway, especially in key projects in recent years.

coated ground wire:

The material in which the surface of a steel core is uniformly coated with copper includes copper-clad steel bars (for vertical grounding electrode only), copper-clad steel tape, and copper-clad steel wires (including round wires and stranded wires). According to the production process, it can be divided into continuous casting copper-clad steel and electroplating copper-clad steel.

Development of copper clad steel grounding device

With the increasing voltage level of power lines and the increasing capacity of the system, higher requirements are put forward for the safety and reliability of grounding devices.

The traditional method in foreign countries is to use pure copper as the grounding material, but pure copper is expensive and it is a strategic resource, which is not suitable for being massively used as grounding devices in China. From 1910 to 1955, National Bureau of Standards (NBS) conducted corrosion resistance studies of grounding bodies. 36,500 samples collected at 128 test sites throughout the United States represented 333 metal materials consisting of iron, non-ferrous metals and protective coatings, respectively. The test results show that only steel bars and stainless steel bars with copper plating thickness over 0.5mm can be accepted.

In addition, continue the statistical data of 8 to 30 years and take the test results of 43 copper samples in different soils, 41 of which were calculated, to get the 0.17mm average pitting depth of 30 years. Therefore, some international standards have determined the thickness of copper coating of copper-clad steel material to be at least 0.25 mm. Considering the hard friction during construction, it is suggested that the thickness of copper coating be defined as 0.5-0.8 mm.

In China, copper clad(copperweld) steel materials are widely used in substation grounding grids in areas with high soil resistivity. Because of the characteristics of UHV project, such as high voltage level, large capacity and short power cut window period, combined with the corrosion intensity of groundwater in the area, copper-clad steel grounding devices have been applied in UHV lines and many UHV lines in China use copper-clad steel materials as grounding bodies.

Comparison between copper-clad steel grounding and traditional hot-dip galvanized steel grounding device

1. Corrosion rate comparision

Annual corrosion rate of grounding materials in some place of Beijing and Tianjin

The test results show that galvanized steel has the most serious corrosion and its corrosion rate is more than 50 times higher than that of pure copper; the corrosion degree of stainless steel is much lower than that of pure copper and copper-clad steel, showing good corrosion resistance; as a copper-steel composite material, the self-corrosion potential of copper-clad steel in soil is basically the same as that of pure copper, and its corrosion rate is the same as that of pure copper; the corrosion rate of the electroplated copper-clad steel with thinner coating is higher than that of the continuous casting copper-clad steel with thicker coating.

2. Analysis and comparison of physical performance in short circuit

If the conductivity of copper were 100% and the conductivity of standard 1020 steel were only 10.8%, the conductivity of copper would be about 10 times that of steel. However, the conductivity of the 30% conductivity copper-clad round wire would be 30%, and the conductivity of the 40% conductivity copper-clad round wire would be 40%, which would be far better than the steel grounding body. Especially under skin effect, the conductivity of copper-plated strands at high frequencies would be much better than that of steel, that is, the conductivity of copper grounding body would be better than that of steel grounding body. The melting point of copper is 1083℃ and the maximum allowable temperature during short circuit is 450℃ ; the melting point of steel is 1510℃ and the maximum allowable temperature during short circuit is 400℃. Therefore, when the grounding body has the same cross section, the copper-clad steel grounding material has better thermal stability.

3. Economic comparison

According to Appendix D of Technical Conditions for Copper-clad Steel for Grounding in Electrical Engineering, the corrosion rates of copper clad steel in different soils are calculated according to the reference values in table. Corrosion rate of pure copper under different soil corrosion grades (mm/a)

The 0.8mm copper plating thickness is enough to meet the requirement of 60 years of service under the grade of III extremely strong corrosion.

The corrosion rate of galvanized steel is nearly 50 times that of copper-clad steel under the same soil conditions, and the grounding body should be overhauled after being used for 3-5 years.

The State Grid has accounted the UHV tower according to the drawings: after the investigation of the market price of material during the construction, the market price of the copper-clad-steel grounding body is calculated at RMB 20 /m, the market price of φ12 galvanized-steel round steel grounding body is calculated at RMB 6 /m and the grounding body laying is calculated according to the grounding construction drawing. During the 30-year whole life cycle, galvanized steel is overhauled every 5 years, of which the cost of material is RMB 20 /m for copper-clad steel and RMB 36/m for galvanized steel, that is, only material cost can be reduced by 80%. Galvanized steel can be overhauled and replaced six times. If the construction cost is RMB 70 /m3 for earthwork and stone works and each base tower is calculated by 23 m3 for excavation, RMB 9660 per base tower will be saved.

Copper-clad steel construction

The horizontal laying of the copper-clad steel grounding device is the same as that of the ordinary galvanized round steel, where only the connection method is changed to hot-melt welding, which has reduced the contact resistance between the joints and is more conducive to the release of lightning current.

Exothermic welding, also known as "aluminum heat welding", is a simple, high-efficiency, high-quality metal joining process that has been mass-produced and used in China in recent years. Exothermic welding uses chemical reaction heat of metal compounds as heat source and through superheated (reduced) molten metal or indirect heating, a certain shape and size of the melted joint is formed in the cavity of the special graphite mould, which meets the engineering requirements, and finally through cooling and condensation, the welding process is realized. At present, exothermic welding has generally replaced the mechanical connection between metals in the past.

Advantages of copper-clad steel

1.It has strong corrosion resistance and will not be disjointed, warped or cracked. The corrosion in the grounding body of the grounding grid is reduced, which has improved the overall operational safety of the equipment;

2. It has good electrical conductivity and stable electrical performance;
3. The copper layer and the steel bar achieve molecular bonding, and the grounding bar will not break down when it penetrates into the soil.
4. The copper-clad-steel grounding material used has high efficiency of reducing the resistance, and the length of the horizontal grounding body is reduced by 1/3 for the design of the high-resistance section, greatly reducing the excavation amount of the earthwork;
5. The design and use of exothermic welding technology is very suitable for the needs of field construction, greatly improving work efficiency and effectively shortening the construction period.

Performance parameters of copper-clad steel wire

Copper layer thickness:0.8mm; tensile strength: greater than 500MPa; copper-clad steel bent 180° without peeling off copper layer.

Specification of 0.8mm series copper-clad round steel: Soft copper-clad round bars are generally packaged in hanks or rolls, 100 meters per roll, easy to transport, suitable for laying of large grounding grids and horizontal grounding lines.

Usage:key projects, large grounding grids and horizontal grounding wires in industries with higher lightning protection requirements, etc.

Note:

1. If the thickness of copper layer is required to be 1 mm, please contact us directly.
2. We undertake custom-made zinc-clad steel ground rod and round steel.

Production method of copper clad steel technical field The invention specifically relates to a production method of copper clad steel.

Background technologycopper clad steel

The conductivity of existing copper clad steel products is not good, far inferior to that of pure copper products. The reason is that the overall product performance is insufficient when copper is coated on steel materials in the process.

Summary of the invention

In view of the above technical problems, the invention provides a production method of copper clad steel.

A copper clad steel production method comprises the following steps:

1. Surface treatment of steel wire;
2. Stripping and wire drawing of the treated steel wire;
3. Straightening and polishing the treated steel wire.
4. Heating the treated steel wire to 300-400 degrees.
5. Melting copper into water in high temperature furnace.
6. The steel wire in step D is coated with copper water in step E and then cold crystallized to form the product.

Preferably, the steel wire surface treatment in step A is a mechanical grinding treatment without water contamination.

The invention provides a production method of copper clad steel. The conductivity of the product obtained by the method is close to that of the pure copper product, the cost is greatly reduced, and the service life is prolonged.

We are one of the leading copperweld copper clad steel wire suppliers, RFQ today!

Uses of MEA

 GB 2760-96 provides it as allowable food processing aids with GMP as limit.

 It can be used as the cleaning liquid for the removal of carbon dioxide and hydrogen sulfide in the gas. Esters generated from the reaction between triethanolamine and higher fatty acids are widely used as detergents, emulsifiers, wetting agents and lubricants as well as for the preparation of cosmetic balsam. Triethanolamine can also be used as preservatives and waterproofing agents, analysis reagents and solvents. In the nitrile rubber polymerization, it is used as an activator. It can also be used as the emulsifier, stabilizer, textile softer of oil and wax. It is one of the components of oiling agent of synthetic fiber.

 It can be used as the additives in the nitrile rubber polymerization, concrete accelerator, oil emulsifier as well as used for non-cyanide plating

 It can be used as the stationary phase of gas chromatography (the maximum applied temperature is 75 ℃; the solvent is methanol and ethanol); It can be used for separation and analysis of oxygen, nitrogen compounds and water-containing samples. It can be used as complexing agent; as metal masking agent; for titration of platinum and palladium; for colorimetric determination of manganese; for determination of tin, antimony and manganese; used for absorption of carbon dioxide and carbon disulfide and other alkaline gases; used as emulsifier, solvent and corrosion inhibitors.

CAS NO. 141-43-5

The chemical Monoethanolamine (MEA) is primarily a buffering agent in pharmaceutical formulations and is used in the preparation of emulsions. In addition, the most common therapeutic use of this product is as a monoethanolamine oleate injection for tissue hardening agents. Other uses include as a fat and oil solvent and as a phenytoin glucose solution for injection stabilizer. MEA can also be used to prepare a variety of therapeutically useful salts. For example, vitamin C monoethanolamine salt can be used for intramuscular injection, and salicylic acid monoethanolamine salt and monoundecens monoethanolamine salt can be used to treat rheumatism and as an antifungal agent respectively.

Industrial applications of MEA

MEA is used as chemical reagents, pesticides, pharmaceuticals, solvents, dye intermediates, rubber accelerators, corrosion inhibitors, and surfactants. Also used as acid gas absorbents, emulsifiers, plasticizers, rubber vulcanizing agents, printing and dyeing brighteners, fabric anti-caries agents, etc. In addition, monoethanolamine can be used as a decolorizer in the production of new energy bio-diesel.

MEA reacts with oxiepoxyethane and to produce diethanolamine and triethanolamine.

Uses of MEA

 GB 2760-96 provides it as allowable food processing aids with GMP as limit.

 It can be used as the cleaning liquid for the removal of carbon dioxide and hydrogen sulfide in the gas. Esters generated from the reaction between triethanolamine and higher fatty acids are widely used as detergents, emulsifiers, wetting agents and lubricants as well as for the preparation of cosmetic balsam. Triethanolamine can also be used as preservatives and waterproofing agents, analysis reagents and solvents. In the nitrile rubber polymerization, it is used as an activator. It can also be used as the emulsifier, stabilizer, textile softer of oil and wax. It is one of the components of oiling agent of synthetic fiber.

 It can be used as the additives in the nitrile rubber polymerization, concrete accelerator, oil emulsifier as well as used for non-cyanide plating

 It can be used as the stationary phase of gas chromatography (the maximum applied temperature is 75 ℃; the solvent is methanol and ethanol); It can be used for separation and analysis of oxygen, nitrogen compounds and water-containing samples. It can be used as complexing agent; as metal masking agent; for titration of platinum and palladium; for colorimetric determination of manganese; for determination of tin, antimony and manganese; used for absorption of carbon dioxide and carbon disulfide and other alkaline gases; used as emulsifier, solvent and corrosion inhibitors.

Longfeng is one of the leading monoethanolamine suppliers in China. RFQ today!