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Fiberglass Rods Composites
- Jun 12, 2017 -

Fiberglass Rods Composites

Glass fiber rod is a composite material with glass fiber and its products (glass cloth, belt, felt, yarn, etc.) as reinforcing material, synthetic resin as matrix material.

The concept of composite material refers to a material can not meet the requirements of the use of two or more materials need to be combined together to form another material to meet the requirements of people, that is, composite materials. For example, a single glass fiber, although the strength is high, but the fiber is loose, can only withstand tension, can not withstand bending, shear and compressive stress, is not easy to make a fixed geometry, is soft. If they are bonded together with synthetic resin, can be made into a variety of fixed shape of the hard products, both bear tensile stress, but also bear bending, compression and shear stress. This constitutes a glass fiber reinforced plastic matrix composite material. Because of its strength equivalent to steel, but also contains glass components, but also has the glass as the color, shape, corrosion resistance, electrical insulation, heat insulation and other properties, like glass, the history of the formation of this easy-to-understand name "FRP" , The term is the former State Ministry of Building Materials Industry Minister Lai Xiangfa comrades in 1958 proposed by the building materials system to the country, but also commonly used. It can be seen, the meaning of fiberglass refers to the glass fiber as a reinforcing material, synthetic resin as a binder to enhance the plastic, said abroad, said glass fiber reinforced plastic. With the development of China's FRP, as a plastic-based reinforcement, glass fiber has been expanded to carbon fiber, boron fiber, aramid fiber, alumina fiber and silicon carbide fiber, no doubt, these new fiber reinforced plastic , Is a number of high-performance fiber reinforced composite materials, and then commonly known as FRP can not be summarized. Taking into account the origin and development of history, usually using FRP composites, such a name is more comprehensive.

Lightweight high strength

Relative density between 1.5 to 2.0, only carbon steel 1/4 ~ 1/5, but the tensile strength is close, even more than carbon steel, and the specific strength can be compared with the high alloy steel. Therefore, in the aviation, rockets, space vehicles, high pressure vessels and other products need to reduce their weight applications, have excellent results. Some epoxy FRP tensile, bending and compression strength can reach more than 400Mpa.

Good corrosion resistance

FRP is a good anticorrosive material, the atmosphere, water and the general concentration of acid, alkali, salt and a variety of oils and solvents have a better resistance. Has been applied to all aspects of chemical corrosion, is replacing carbon steel, stainless steel, wood, nonferrous metals and so on.

Good electrical performance

Is an excellent insulating material used to make insulators. High frequency can still protect the good dielectric. Microwave permeability is good, has been widely used in radar radome.

Thermal performance is good

FRP thermal conductivity is low, room temperature is 1.25 ~ 1.67kJ / (m · h · K), only metal 1/100 ~ 1/1000, is an excellent insulation material. In the case of instantaneous ultra-high temperature, is the ideal thermal protection and ablation materials, to protect the spacecraft at 2000 ℃ to withstand high-speed air erosion.