Low-gloss, high-performance and thin-walled polypropylene composite material and preparation method thereof

Abstract

The invention discloses a low-gloss, high-performance and thin-walled polypropylene composite material and a preparation method thereof. The low-gloss, high-performance and thin-walled polypropylene composite material comprise the following raw materials in parts by weight: 55-80 parts of polypropylene, 10-20 parts of talcum powder, 0-16 parts of elastomer, 2-6 parts of extinction functional masterbatches, 0-1 part of an antioxidants and 0-3 parts of other auxiliaries. According to the invention, the efficient matting functional masterbatches are added on the basic formula of a traditional thin-walled polypropylene composite material; and the low-gloss, high-performance and thin-walled polypropylene composite material has high fluidity as the thin-walled polypropylene material. As a polymer system is extruded from a twin-screw extrusion or injection molding machine, the inorganic fibers can be well dispersed into the surface layer of the composite material system. The low-gloss thermoplastic elastomer is also introduced into the extinction masterbatches, and can cooperate with the inorganic fibers to ensure the low-gloss property. Meanwhile, it is further ensured that the extinction functional masterbatches have certain toughness requirements.

Description

technical field [0001] The invention belongs to the technical field of polymer modification and processing, and relates to a low-gloss, high-performance, thin-walled polypropylene composite material and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, the manufacture of automobiles consumes a large amount of natural resources, and the environmental and energy problems brought about by the automobile industry are becoming more and more serious. The development and application of automobile lightweight technology has become the mainstream trend of the current automobile industry development. As the largest variety of automotive plastics, polypropylene has been widely used in interior and exterior trims such as bumpers, instrument panels, door panels, and pillars. At present, the thin-walled design of interior and exterior trim parts made of polypropylene materials for vehicles is one of the important means of li...

AI Technical Summary

Problems solved by technology

With the application and development of thin-walled materials, it is found that parts made of thin-walled polypropylene materials have higher gloss, which may be due to the higher melt index of thin-walled polypropylene materials, because polypropylene The higher the melt index, the lower its molecular weight, which will lead to higher gloss of the prepared parts. At the same time, as the number of thin-walled parts mold parts increases, the gloss of the mold itself will also increase, resulting in the prepared parts. increased gloss

For thin-walled automotive interior parts, the high gloss of the parts will bring strong light reflection, which will affect the comfort and safety of the driver and passengers in the car

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