Advantage of FRP materials
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Accordingto statistics, the characteristics of FRP mainly in the following areas:Light & high strength.The relative density of 1.5 to 2.0, only the carbon steel 1/4 to 1/5, but the tensile strength is close to or even more than carbon steel, and the ratio ofstrength compared with the high alloy steel. Therefore, in aviation, rockets,spacecraft, high pressure vessels and other products need to reduce the weight of the application, have excellent results. Some epoxy FRP tensile, bending and compressive strength can reach more than 400Mpa.
FRP,named GRP,is a good corrosion-resistant materials and has better resistance to air,water and general concentrations of acid, alkali, salt and a variety of oils. Ithas been applied to all aspects of chemical corrosion, is to replace carbon steel, stainless steel, wood, non-ferrous metals.
Good electrical properties
FRP material is an excellent insulating material, used to manufacture insulators. Even underhigh frequency can still protect the good dielectric properties. Microwave trans mission is good, has been widely used in radar radome.
The thermal conductivity of FRP is low, and it is 1.25 ~ 1.67kJ / (m • h • K)at room temperature. It is an excellent thermal insulation material with only1/100 ~ 1/1000 of metal. In the case of ultra-high temperature, is the idealthermal protection and anti-ablative material, to protect the spacecraft atmore than 2000 ℃ to withstand high-speedairflow erosion.
Good design property
(1) according to need, the flexibility to design avariety of structural products to meet the use requirements, the product canhave a very good integrity.
(2) materials can be fully selected to meet the performance of the product,such as: can be designed to decay resistance, instantaneous high temperature,the product of a particular direction of high strength, good dielectric, and soon.
According to the product shape, technical requirements, use andquantity to flexibly choose the molding process.the process is simple, can be a forming, highlighting the economic effects,especially for complex shape and small number of products that not easy to shape, highlighting its superiority of the process.