Manufacture method of plastics parts for vehicle or cladding parts

Abstract

The invention discloses a method for manufacturing plastic parts or covering parts, which comprises the two parts of sheet material plastic-absorption molding and reaction injection molding, wherein, the sheet material plastic-absorption molding includes that plastic-absorption molding is carried out on acrylonitrile-butadiene-styrene / acrylic coating exemption sheet material, polypropylene sheet material, polyvinyl chloride sheet material, poly carbon ester sheet material, polythene sheet material, nylon sheet material or acrylonitrile-butadiene-styrene sheet material for manufacturing the finished plastic-absorption products; the reaction injection molding includes that the mixed reactant of polyurethane and glass fibre bunch is poured on the internal surface of the finished plastic-absorption products, the dies are assembled, after complete reaction, the plastic part or covering part used on vehicles is manufactured. The method has the advantages of being suitable for mass production and low harm to environment and human body.

Description

【Technical field】 [0001] The invention relates to a method for manufacturing plastic parts or covering parts for automobiles, in particular to a method for manufacturing plastic parts or covering parts for automobiles using composite materials. 【Background technique】 [0002] In the current situation where resource and environmental issues are getting more and more attention, light weight, energy saving, and environmental protection have always been the research direction of the international automobile industry. Among them, the development of new materials with high strength and high performance The structure has become the trend of the development of auto parts materials. The lightweight of automobiles makes composite materials widely used as raw materials in the field of auto parts. Whether it is interior decoration parts, exterior decoration parts, or functional and structural parts, composite material parts can be seen everywhere, such as bumpers in exterior decoration ...

AI Technical Summary

Problems solved by technology

[0003] At present, the production of domestic automotive composite parts, especially automotive panels, often uses FRP glass fiber reinforced plastics hand-coating process. Due to the poor quality stability, high labor intensity, and the impact on the environment and the operator's body during the production process, the hand-pasted process Harmful shortcomings have been gradually eliminated

The FRP injection technology developed on this basis has improved its production efficiency, but it is limited to the production of simple workpieces.

The emergence of sheet molding compound molding (Sheet Molding Compound; SMC) technology and bulk molding compound molding (Bulk Molding Compounds; BMC) technology has provided reality for the industrial production of automotive panels, but due to the high investment in equipment , high mold cost, complex equipment operation and process control, etc., cannot meet the needs of large-scale production

In addition, the vacuum method is used to compound unsaturated resin and glass fiber or PU polyurethane reinforcement layer in the mold. Since the resin curing time takes at least 4-5 hours, it can only meet the small number of diversified production attempts, but cannot carry out large-scale production. Large-scale industrial production