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Silicone rubber waterproof mastic sealant is a non-shaped sealing material composed of organopolysiloxane as the main agent, with vulcanizing agent, vulcanization accelerator, reinforcing filler and pigment added. According to the use, it can be divided into F type and G type. Type F is used for building joints while Type G is used for mounting glass. According to the fluidity, it can be divided into N type and L type. The N type is non-sagging type while the L type is self-leveling type. According to different vulcanizing agents, silicone rubber sealants can be divided into acetic acid type, ketone oxime type, alcohol type, amine type and amide type. In general, high modulus silicone rubber building sealant uses two types of vulcanization systems: acetic acid type and alcohol type; medium modulus silicone rubber building sealant adopts alcohol type vulcanization system; low modulus silicone rubber construction sealant adopts amide type vulcanization system.

The waterproof principle of silicone rubber foam sealing strip: silicone rubber sealing strip will elastically deform under pressure, so that the gap between the contact interface and the sealing strip is filled and generates a rebounding force, so that the contact surface and the foam sealing strip produce friction. When the sealing strip itself does not leak and when the friction force and the rebounding force are greater than the internal pressure or the external pressure of the sealed medium, the sealing material does not leak due to deformation or displacement, and vice versa.

Silicone waterproof mastic sealer includes:

Deacetic Acid Type

General-purpose application range: glass joints, frame gaps, glass suspension, glass installation in glass sinks (showcases, shop windows)

Highly transparent application range: seams that require transparency

Anti-mildew application range: sealing of bathroom, countertop, washroom, sanitary ware

Structural seal level application range: SSG construction

Features: high modulus, transparency, fast curing, odor, and corrosive to iron and copper

Deketoxime Type

Anti-mildew application range: sealing of bathroom, countertop, washroom, sanitary ware

General-purpose application range: glass joints, frame joints, metal joints, assembly houses, tile, brick stone bonding

Features: high modulus, medium speed curing, and corrosive to steel

GOLOHO POLYMER was founded in China, setting up factory to develop and produce rtv grease. Now the company embraces united and dynamic team, experienced R&D center, advanced detection method, strong manufacture capacity as well as customer-oriented service. We sincerely invite and welcome people from all around the world to invest and create more values together.

Solvent For Silicone

Silica gel alias: Silicic acid gel. It is a highly active adsorbent material and an amorphous material. Its chemical formula is mSiO2. nH2O. It is insoluble in water and any solvent, non-toxic, odorless, stable in chemical properties, and does not react with any substances except strong alkali and hydrofluoric acid. Different types of silica gel have different micropore structure due to different manufacturing methods. The chemical composition and physical structure of silica gel determine that it has many other characteristics which are difficult to be replaced by other similar materials: high adsorption performance, good thermal stability, stable chemical properties, high mechanical strength, etc. Silica gel is classified according to its pore size: macroporous silica gel, coarse pore silica gel, B-type silica gel, fine pore silica gel, and the like.

Dissolution method for silica gel: silicone rubber solvent has excellent water resistance and is insoluble in water, but it can be dispersed in water in subdivided form. Some silicon rubber is still soluble in some non-polar solvents (most of which are swelling), which can be dissolved first and then emulsified into emulsion, and the solvent can be evaporated out.

General rubbers such as common neoprene, nitrile rubber, natural rubber, synthetic natural rubber, butyl rubber, etc., have a large molecular weight, and need to be reduced in molecular weight by melting rubber to be dissolved in an organic solvent. Different glues have different solvents depending on their polarity.

Polyurethane is also a rubber, but it is formed by physical crosslinking. Linear or differentially branched polyurethane resins generally require aprotic, highly polar solvents such as DMF, DMAc, and NMP.

Characteristics of rubber dissolution: Solid unvulcanized rubber can be dissolved in some organic solvents, but as a polymer material, its dissolution process is significantly different from that of solid low molecular materials. First, the dissolution process is slow and cannot be accomplished in a flash like a low molecular material. Second, the whole process is divided into two phases: first swelling and then dissolution.This time needed is particularly long.

GOLOHO POLYMER was founded in China, setting up factory to develop and produce rtv grease. Now the company embraces united and dynamic team, experienced R&D center, advanced detection method, strong manufacture capacity as well as customer-oriented service. We sincerely invite and welcome people from all around the world to invest and create more values together.

Silica gel alias: Silicic acid gel. It is a highly active adsorbent material and an amorphous material. The main component of silica gel is silica, which is chemically stable and does not burn. It has an open porous structure with strong adsorption and can absorb a variety of materials. When dilute sulfuric acid (or hydrochloric acid) is added to the aqueous solution of water glass, it will become hydrous silicic acid gel and become solid. The dissolved electrolyte Na+ and SO4 2-(Cl-) ions are removed by water washing. Silica gel can be obtained after drying.

Generally speaking, silica gel can be divided into organic silica gel and inorganic silica gel according to its properties and components.

Inorganic silica gel is a kind of highly active adsorption material, which is usually prepared by the reaction of sodium silicate and sulfuric acid and a series of post-treatment processes such as aging and submerge in acid. Silica gel is an amorphous substance. Its chemical formula is mSiO2. nH2O. It is insoluble in water and any solvent, non-toxic, odorless, stable in chemical properties of silica gel, and does not react with any substances except strong alkali and hydrofluoric acid. Different types of silica gel have different micropore structure due to different manufacturing methods.

The silica gel chemical formula     and physical structure determine that it has many other characteristics which are difficult to be replaced by other similar materials: high adsorption performance, good thermal stability, stable chemical properties, high mechanical strength, etc. It is used by families as desiccant, humidity regulator, deodorant, etc., by industry as oil hydrocarbon decolorizing agent, catalyst carrier, variable pressure adsorbent, etc., and by fine chemical industry as separation purifier, beer stabilizer, paint thickener, toothpaste friction agent, polish remover, etc.

Organic silica gel is an organosilicon compound that contains Si-C bonds, and at least one organic base is directly connected to the silicon atom. Traditionally, those compounds that connect the organic base to the silicon atom via oxygen, sulfur, nitrogen, etc., are also considered as organosilicon compounds. Moulded silica gel is a little more complex with irregular shapes, including silica gel bowl, silica gel ice lattice, silica gel cake mold and so on.

GOLOHO POLYMER was founded in China, setting up factory to develop and produce rtv grease. Now the company embraces united and dynamic team, experienced R&D center, advanced detection method, strong manufacture capacity as well as customer-oriented service. We sincerely invite and welcome people from all around the world to invest and create more values together.

1.Use: A single group of silicone glass glue can be used immediately. It is easy to type it from the bottle with a glue gun, and a spatula or wood chip can be used to trim the surface.

2.Silicone glue drying time   : the curing process of silicone rubber is developed from the surface to the inside. The drying time and curing time of different characteristics of silica gel are different. So if you want to fix the surface you have to do it before the glass gel sheet is dry (acid glue, neutral and transparent glue should be in 5-10 minutes, neutral color glue should be in 30 minutes generally). If the color paper is used to cover a certain place, after coating, it must be removed before the skin is formed.

3.Curing time: the curing time of glass glue increases as the adhesive thickness increases. For example, the acid glass glue of 12mm thickness may take 3-4 days to solidify. But within about 24 hours, the outer layer of 3mm has been solidified. When glued to glass, metal or most wood, it has an anti-stripping strength of 20 pounds per inch at room temperature after 72 hours. If the use of glass glue is partially or completely sealed, the solidification time is determined by the closeness of the seal. In a place of absolute closeness, it is possible to remain uncured forever. If the temperature is raised, the glass will soften. The gap between metal and metal bonding should not exceed 25mm. In all kinds of bonding situations, including airtight conditions, the adhesion effect should be thoroughly checked before the equipment is used. In the curing process, acid glass glue will produce a smell due to the volatilization of acetic acid, which will disappear in the curing process. There will be no smell after curing.

4.Adhesion: A. Wipe the surface of the metal and plastic completely, remove the oil, and then wash the whole surface with acetone except for the plastic. If it is rubber surface, apply sandpaper and rub it with acetone. Please observe the precautions when using acetone. B. Apply the glass glue evenly on the surface of the prepared object. If the two surfaces are glued together, place one side properly first and press the other side to squeeze out the air, but be careful not to extrude the glass. C. place the bonding device at room temperature and wait for the glass to solidify.

5.Seal: the fast drying silicone glue    also can be used for sealing purposes according to the above steps. Squeeze the glass glue into the joint or the seam so that the glass glue is in full contact with the surface.

6.Cleaning: before curing, the quick dry waterproof sealant can be erased with a cloth or paper towel. After curing, it should be cleaned with a scraper or xylene, acetone and other solvents.

GOLOHO POLYMER was founded in China, setting up factory to develop and produce rtv grease. Now the company embraces united and dynamic team, experienced R&D center, advanced detection method, strong manufacture capacity as well as customer-oriented service. We sincerely invite and welcome people from all around the world to invest and create more values together.More info of silicone sealant at GOLOHO.

How to remove rtv?

For clothing stained with this RTV silicone, the silicone should be moistened with turpentine to soften it, and then removed with gasoline. For already dry spots, apply cream or artificial butter first, then wipe with gasoline or turpentine, then wipe with 10% ammonia until all the silicone are cleaned. You can also use turpentine to wet the silicone or apply a mixture of white porcelain clay and turpentine to the silicone. After 4 to 5 hours, the RTV silicone can be wiped off and washed with hot soapy water. In addition, the solvent chloroform, turpentine and a mixture of chloroform and carbon tetrachloride (1;1), and a mixture of diethyl ether and ethyl acetate (1;1) are  very effective in removing oil base and dry oil spot.

Such stains on the dyed fabric are first wetted with a pure hot glycerin solution, and then pressed with a cotton ball which touches glycerin tightly on the stain (no rubbing is allowed, rubbing causes changes in the color around the stain).

For such stains on white clothing and non-fading clothing, use concentrated alcohol or concentrated alcohol and a mixture of 5% ammonia in water. When a colored wash stain remains on it, it should be treated with a 3% sodium dithionite solution. When the garment is white cotton and linen, it needs to be removed with an aqueous solution of bleaching powder or an aqueous solution of a mixture of bleaching powder and washing soda ash.

For such stains  on white clothing and non-fading clothing, use concentrated alcohol or concentrated alcohol and a mixture of 5% ammonia in water.  you should use 3% concentration of sodium dithionite solution to deal with when the dress is white cotton and linen, using aqueous solution of bleach or aqueous solution of bleach and washing soda ash mixture of removal.

GOLOHO POLYMER was founded in China, setting up factory to develop and produce rtv grease. Now the company embraces united and dynamic team, experienced R&D center, advanced detection method, strong manufacture capacity as well as customer-oriented service. We sincerely invite and welcome people from all around the world to invest and create more values together.

Heat resistant silicone glue is a polymer of isoprene made from latex collected from rubber trees. It has good wear resistance, high elasticity, breaking strength and elongation. It is easy to age in air, viscous when heated, easy to expand and dissolve in mineral oil or gasoline, alkali-resistant but not strong acid-resistant.

What are the advantages of heat resistant silicone glue?

1. High and low-temperature impact resistance;
2. Extremely low odor; the releases in the process are harmless to the human body;
3. No primer is needed for bonding with various substrates.
4. Excellent heat resistance, ozone resistance, and chemical erosion resistance.
5. Electrical insulation performance;
6. The single-component system is easy to use.

What are the application areas of thermal silicone glue?

Mainly used for sealing daily necessities, such as fresh-keeping boxes, lunch boxes and other products; food machinery, such as sealing rings of sealing machines; electronic appliances, such as pressure cookers, rice cookers; in addition, it can also be widely used in hardware, communication equipment, sanitary ware, baby products, security and environmental protection, sports equipment, printing, and mechanical manufacturing industry.

GOLOHO POLYMER was founded in China, setting up factory to develop and produce rtv grease. Now the company embraces united and dynamic team, experienced R&D center, advanced detection method, strong manufacture capacity as well as customer-oriented service. We sincerely invite and welcome people from all around the world to invest and create more values together.