The Specification Of FRP Manhole Cover

The scientific name of fiberglass reinforced plastic manhole cover is fiberglass reinforced plastic manhole cover. It is a kind of composite material with glass fiber and its products (glass cloth, belt, felt, yarn, etc.) as reinforcing material and synthetic resin as matrix material. For example, although a single kind of glass fiber has high strength, it is loose among the fibers. It can only bear tensile force, but can not bear bending, shearing and compressive stress. It is not easy to make a fixed geometry and is loose soft. If they are bonded together with synthetic resin, they can be made into various hard products with fixed shape, which can bear not only tensile stress, but also bending, compression and shear stress. This makes glass fiber reinforced plastic matrix composites.

Because its strength is equivalent to steel, it also contains glass components, and it also has the color, shape, corrosion resistance, electrical insulation, heat insulation and other properties like glass. Like glass, this easy to understand name "FRP" has been formed in history. This term was proposed by Comrade Lai Jifa, former Minister of the Ministry of building materials industry of the people's Republic of China in 1958, and has been extended from building materials system to the whole country It is also widely used. It can be seen that the meaning of glass fiber reinforced plastics refers to the reinforced plastics with glass fiber as reinforcement material and synthetic resin as binder.

With the development of China's FRP industry, as a plastic based reinforcing material, it has expanded from glass fiber to carbon fiber, boron fiber, aramid fiber, alumina fiber and silicon carbide fiber. Undoubtedly, the reinforced plastics made of these new fibers are some high-performance fiber reinforced composites, which can not be generalized by the common name of FRP. Considering the origin and development of history, FRP composite materials are usually used. Such a name is more comprehensive.
Zibo Best Energy-Saving Materials Co.,Ltd. was established in 2004,focus on production and custom composite cover,SMC/BMC manhole cover,trench cover,manhole chamber,telecom cover,drainage cover.