Glass fiber rod is made of glass fiber and its products (glass cloth, belt, felt, yarn, etc.) as reinforcing material, which is a kind of composite material made of synthetic resin as matrix material. The concept of the composite material is a kind of material can not meet the requirement of the use, by two or more materials together, of another can meet the requirements of material, composite material. Single kind of fiber glass, for example, although the intensity is high, but the fibers is loose, can only sustain tension, can't bear bending, shear and compressive stress, also not easy to make a fixed geometry, is the soft body. If they are bonded together by synthetic resin, they can be made into a variety of hard products with fixed shapes, which can withstand tensile stress.
It can withstand bending, compression and shear stress. This makes up the glass fiber reinforced plastic matrix composite. Due to its strength of steel, and glass components, also has a glass color, shape, such as corrosion resistance, electrical insulation, heat insulation performance, such as glass, formed in the history of this easy to understand the name of the "glass", by the former national building materials industry minister this noun is put forward in 1958, the building materials system expansion to the nation, is now also widely used. It can be seen that the meaning of fiberglass is the reinforced plastic of glass fiber reinforced material and synthetic resin, and the glass fiber reinforced plastic abroad. With the development of China's glass fiber reinforced plastic, as reinforced material of plastic base, is made of glass fiber expanded to carbon fiber, boron fiber, aramid fiber, silicon carbide fiber and alumina fiber, there is no doubt that these new type of fiber reinforced plastics, are some high performance fiber reinforced composites, the commonly known as cannot be summarized with glass fiber reinforced plastic. In view of the origin and development of history, it is usually made of FRP composites, such a name is more comprehensive.