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Permanent soft and hard magnetic materials, also known as hard magnetic materials, are materials that still have magnetism after the magnetization field is removed. Soft magnetic materials have strong magnetic induction strength when the magnetization field exists, and lose magnetism when the magnetization field is removed. Hard and soft here do not mean hard and soft in mechanical properties, but in magnetic properties. Hard magnetism means that a magnetic material can retain its strong magnetism (magnetism for short) for a long time after being magnetized by an external magnetic field, and is characterized by strong coercivity. Coercivity is the magnetic field strength that makes magnetized materials undergo demagnetization and reduce the residual magnetism (residual magnetic flux density or residual magnetization) to zero.

 

At present, the application market of magnetic materials products in China is expanding rapidly.  Magnetic materials matching components are increasingly demanded in the domestic market.  In accordance with the requirements of environmental protection, oil-free automobiles and motorcycles are the direction of future development, which will bring a broad market to the development of rare earth permanent magnets. "Green Lighting Project" is also a major energy-saving  project in our country. The development of energy-saving lamps requires the use of a large number of high-end ferrite soft magnetic cores and anti-interference magnetic cores.

 

With the increasing number of car production and speakers used, the demand for ferrite permanent magnet materials is also increasing. The development of computers has driven the development of related supporting components. Magnetic disks, optical disk drives and printer drive heads are the largest "users" of NdFeB. Multimedia acoustics also demands permanent magnetic materials (hard magnetic materials) in a large amount.

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BMC, SMC, GRP, GFK Roof Tiles

Aobang (sheet molding compound manufacturers) composite roofing tiles is divided into: BMC roofing tiles, SMC roofing tiles, GRP roofing tiles, GFK roofing tiles.

Due to the excellent properties of BMC, SMC, ,GFK, GRP roofing materials, it is the best choice for making roof tiles. BMC, SMC, GRP, GFK material is a composite material, mixed with polyester resin, chemical and mineral fillers, technical agents, usually reinforced with fiberglass. It is an excellent material for outdoor applications. It has weather resistance and UV stability and has a service life of more than 30 years in outdoor environments. It absorbs almost no moisture, so it can isolate the moisture from the outdoors to the room. It is water and chemical resistant so acid rain does not affect the surface of the roof. Colors are easily mixed into the BMC, SMC, GRP, GFK material as a pigment, so colored tiles can be easily obtained and the color does not disappear during its lifetime.

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BMC, SMC, GRP, GFK materials are also fire resistant. If there is no source of burning material around it, it will not spread and will immediately go out. Light weight and high strength are one of the biggest advantages of BMC, SMC, GRP, GFK materials. This material has a density of 1.7-2.0. It makes the tiles very light. Transportation costs, installation costs, etc. can be reduced. this materials make your roof tiles more colorful, longer lasting and more cost effective.

Advantage: Light weight, high strength, aging resistance, UV protection, acid and alkali resistance, waterproof and moisture proof, no fading, low thermal conductivity and energy saving.

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