Polypropylene material for lightweight of automobile

Abstract

The invention discloses a polypropylene material for lightweight of an automobile. The polypropylene material is prepared from the following components: polypropylene, talcum powder, calcium silicate,hollow glass microspheres, a lubricant, graphene, an antioxidant, a mould release agent and an adsorbent, wherein the polypropylene is prepared by mixing homopolymerized polypropylene with copolymerized polypropylene. According to the polypropylene material for the lightweight of the automobile, provided by the invention, filling of the graphene and the calcium silicate is adopted, so that the density of the polypropylene material can be reduced, the comprehensive mechanical performance of a polypropylene complex is improved, and the lightweight development requirement of automobile parts ismet.

Description

technical field [0001] The invention relates to a polymer material, in particular to a lightweight polypropylene material for automobiles. Background technique [0002] Polypropylene is a general-purpose plastic with low cost and excellent mechanical properties. Bumpers, deflectors and other automotive exterior parts are mostly made of polypropylene composites. At present, the main method of modifying polypropylene is to add talcum powder to achieve the required rigidity, which leads to a relatively high final density of polypropylene composites, about 0.98-1.02g / cm 3 . As the country sets standards for motor vehicle emissions and energy consumption per unit weight and gradually implements them, it is imperative to reduce the weight of the entire vehicle. Lightweight development trend. [0003] In order to further reduce the weight, the thin-wall design of plastic parts is a new research and application point for the models of domestic and foreign OEMs; at the same time, ...

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Problems solved by technology

[0004] In the prior art, Chinese invention application CN102492221A discloses a low-density polypropylene composite filled with hollow glass microspheres, which includes polypropylene, heat stabilizer, lubricant, toughening agent, interfacial compatibilizer, talcum powder, etc. A component whose density is reduced to 0.95g / cm by filling hollow glass microspheres 3 However, the comprehensive mechanical properties of the polypropylene composite are not good, especially in terms of toughness, which cannot meet the application requirements of exterior parts such as automobile bumpers

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