glass fibre reinforced plastic sheets is a variety of composite materials with different properties and a wide range of applications. It is a new type of functional material made from synthetic resin and glass fiber through the composite process.

Features of glass fibre reinforced plastic sheets.

(1) good corrosion resistance: glass fibre reinforced plastic sheets is a good corrosion-resistant material, for the atmosphere; water and general concentration of acid and alkali; salt and a variety of oils and solvents have good resistance, has been widely used in all aspects of chemical corrosion. It is replacing carbon steel; stainless steel; wood; non-ferrous metals and other materials.

(2)Light weight and high strength: relative density is between 1.5~2.0, only 1/4~1/5 of carbon steel but the tensile strength is close to or even exceeds carbon steel, while the strength can be compared with senior alloy steel, which is widely used in aerospace; high pressure containers and other products that need to reduce self-weight.

(3) Good electrical properties: glass fibre reinforced plastic sheets are excellent insulating materials, used in the manufacture of insulators, high frequency still maintain good.

(4)Good thermal properties: low electrical conductivity, 1.25~1.67KJ at room temperature only 1/100~1/1000 of metal is an excellent insulation material. In the case of instantaneous ultra-high heat, it is an ideal material for thermal protection and ablation resistance.

(5) Excellent process performance: the molding process can be selected according to the shape of the product and the process is simple and can be formed in one time.

(6)Good designability: the material can be selected according to the demand to meet the requirements of the product performance and structure.

(7)Low modulus of elasticity: the modulus of elasticity of glass fibre reinforced plastic sheets is 2 times larger than that of wood but only 10 times smaller than that of steel, so the product structure often feels less rigid and easily deformed. The solution, can be made into a thin shell structure; sandwich structure can also be made up by high modulus fiber or reinforcement form.

(8) poor long-term temperature resistance: generally can not be used at high temperatures for a long time, general polyester resin FRP in 50 degrees above the strength will be significantly reduced.

(9) Aging phenomenon: it is easy to cause performance degradation under the action of ultraviolet light; wind, sand, rain and snow; chemical medium; mechanical stress, etc.

(10) Low interlayer shear strength: interlayer shear strength is borne by the resin, so it is lower. It can be improved by selecting the process, using coupling agents and other methods to improve the interlaminar bonding force, and try to avoid making the interlaminar shear in the product design.

Advantages of glass fibre reinforced plastic sheets.

The heat resistance of glass fibre reinforced plastic sheets is much higher than without glass fibre, especially for nylon plastics.

glass fibre reinforced plastic sheets have a low shrinkage rate and high rigidity.

glass fibre reinforced plastic sheets do not stress crack, and at the same time, the impact resistance of glass fibre reinforced plastic sheets is much improved

The strength of glass fibre reinforced plastic sheets is high, e.g. tensile strength, compressive strength, bending strength, all are high.

Due to the addition of other additives, the burning properties of glass fibre reinforced plastic sheets are much reduced, and most of the material cannot be ignited, which is a kind of flame retardant material.

glass fibre reinforced plastic sheets Disadvantages.

Due to the addition of glass fiber, the plastic becomes opaque, which was transparent before the addition of glass fiber.

Glass fibre reinforced plastic sheets are less tough and more brittle than plastics without the addition of glass fibre;

Due to the addition of glass fibre, the melt viscosity of all materials increases and the flowability becomes worse, and the injection pressure is much higher than that without the addition of glass fibre.

Due to the addition of glass fiber and additives, glass fibre reinforced plastic sheets' moisture absorption performance is greatly enhanced, the original pure plastic does not absorb water will also become water absorption, therefore, injection molding are to enter the drying.

In the injection molding process, the glass fiber can enter the surface of plastic products, making the surface of the products become very rough and spotty. In order to obtain high surface quality, it is better to use mold temperature machine to heat the mold when injection molding, so that the plastic polymer can enter the surface of the products, but it cannot achieve the appearance quality of pure plastic.

After the glass fiber reinforced, glass fiber is a very hard material, the auxiliary high temperature volatilization is a very corrosive gas, the screw of the injection molding machine and injection mold wear and corrosion is very large, therefore, the production of molds and injection molding machines using such materials, pay attention to the surface corrosion treatment of equipment and surface hardness treatment.