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The new composite material will be developed in the future
Writer:admin    Released:2018-05-31 14:50:35    Type:【L】【M】【S

1. Carbon fiber reinforced plastics (CFRP).Carbon fiber and polypropylene eyes after high temperature heat treatment made and become, has high heat resistance, the proportion of smaller than aluminum and glass fiber, and plastic composite its strength can compete with steel and aluminum.But the cost of CFRP is much higher than that of GFRP, mostly confined to aerospace and sporting goods.

In 1979, ford motor corporation of the United States issued a new concept for a light experimental vehicle with GFRP, which USES CFRP for about 300kg, with a fuel cost reduction of about 35%.The experiment the owner if the CFRP materials used in car body panels, the other is the shaft and plate spring functional parts, such as at the same time, also try on the engine block and connecting rod, piston components application.CFRP materials are light in weight and have high stiffness and strength. Due to the anisotropy of materials, the strength and rigidity can be maintained in the required direction when designing.The elastic modulus of CFRP is 4~9 times of GFRP and 3~4 times of metal material.If produced in batches, the cost will fall further, so it will be a highly anticipated composite material.

2. Fiber reinforced metal (FRM).CFRP and GFRP have all kinds of excellent mechanical properties, but its base is plastic, which is less heat resistant than metal.As a result, research on the use of FRM as a high temperature strength material is very popular and opens up the possibility of using it in cars.The reinforcing fibers include: carbon element, silicon carbide, boron, alumina, etc.The base, starting with aluminum, copper and nickel, followed by titanium, magnesium, zinc and tin suitable for various purposes.The reinforced fibers, combined with various metals, will produce a variety of FRM characteristics.FRM is being applied to pistons, linkages and other sliding parts.Because of the high price of this kind of fiber, and it has not reached the scale of mass production, it is a material with high temperature strength, and its utilization value is quite high.

3. Metal-plastic layer materials.The high strength steel plate and aluminum, plastic and other materials are ideal lightweight materials, as well as interlayer structure of laminated materials.Because it is on both sides of the plastic core bonded on thin steel plate or aluminum plate, with superior heat insulation and sound insulation performance.Laminated material, it is called to develop the same rigid good characteristic as steel plate, it is subjected to bending stress by metal plate on both sides of plastic core, and shear stress by plastic core material.Under the same rigid, laminated plates, compared with common steel plate quality is 30% ~ 70% if for laminated board quality has certain limit when required, may be changed by the both sides of the core metal plates and the thickness of the core board to solve.The cost of laminated materials is generally one to three times that of steel plate, but there are still some problems to be solved.When its surface metal plate rusts, rigidity will be reduced, etc.However, with the development of laminated materials, it is possible to make them practical.

4. Automotive glass fiber reinforced composite material.Because of the variety of reinforcing materials and filling materials, the materials that use glass fiber as reinforcing materials are called GFRR.The physical and mechanical properties of plastics have been greatly improved by the addition of glass fiber.At present, glass fiber reinforced plastics used in automobiles mainly include glass fiber reinforced PP, glass fiber reinforced PA66 or PA6, and a small amount of PBT and PPO materials.Car on the application of glass fiber reinforced composite materials including glass fiber reinforced thermoplastic materials, glass fiber mat reinforced thermoplastic (GMT), sheet molding materials (SMC), resin transfer molding (RTM) and hand lay-up FRP products.

Reinforced PP is used mainly for the engine cooling fan blade and timing of tooth top and bottom cover cap and other products, but some defect products such as appearance quality is bad, warp, so the function gradually replaced by a talcum powder add filling PP.Reinforced PA material on the car, van, and trucks have been used, are generally used to make the function of the small parts, such as: the lock body nut, insurance, wedge, the built-in protection, the accelerator pedal, shift up and down to protect the frame - shield and open handle, etc.GMT are extremely active international composite material developed varieties, it is a kind of thermoplastic resin as matrix, with glass fiber mat reinforced skeleton of the novel, energy saving and lightweight composite material, generally can produce sheet semi-finished products, and then directly processed into the required shape products, fiber can be chopped glass fiber or continuous glass fiber mat.

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