High-impact-resistant polypropylene composite material for bumpers of automobiles and method for manufacturing polypropylene composite material

Abstract

The invention discloses a high-impact-resistant polyethylene composite material for bumpers of automobiles and a method for manufacturing the high-impact-resistant polyethylene composite material. The high-impact-resistant polyethylene composite material comprises, by weight, 90-110 parts of polyethylene, 15-25 parts of polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol terephthalate, 5-7 parts of bi-12-carbon alcohol ester, 7-9 parts of liquid nitrile rubber, 3-5 parts of graphene, 4-6 parts of zirconium boride, 2-3 parts of lead sulfate tribasic, 6-10 parts of zinc stearate, 6-8 parts of dipropyl maleate, 5-8 parts of thermoplastic polyurethane elastomers, 4-6 parts of rosin glycerin ester, 6-9 parts of Chinese insect wax, 9-11 parts of epoxidized soybean oil, 8-10 parts of glass fibers, 10-14 parts of gypsum whiskers, 6-9 parts of stronWiNTC, 4-6 parts of zinc molybdate, 7-9 parts of antimony trioxide and 13-15 parts of nanometer diamond. The high-impact-resistant polyethylene composite material and the method have the advantages that the high-impact-resistant polyethylene composite material manufactured by the aid of the method is excellent in impact-resistant performance and high in tensile strength and impact strength.

Description

technical field [0001] The invention relates to a composite material, in particular to a polypropylene composite material for a high impact-resistant automobile bumper and a preparation method thereof. Background technique [0002] The front and rear ends of the car are equipped with bumpers, which not only have decorative functions, but more importantly, are safety devices that absorb and ease external impact, protect the body and protect the occupants. Many years ago, the front and rear bumpers of automobiles were mainly made of metal materials. They were stamped into U-shaped channel steel with a thickness of more than 3 mm, and the surface was chrome-plated. Large gaps, like an added part, look very unsightly. With the development of the automobile industry and the extensive application of engineering plastics in the automobile industry, automobile bumpers, as an important safety device, are also on the road of innovation. At present, in addition to maintaining the or...

AI Technical Summary

Problems solved by technology

It has the advantages of good comprehensive strength, easy processing and molding, and recyclability, but the toughness and impact resistance of polypropylene materials are poor, so it needs to be modified when used in automobile insurance

The traditional modification method is to toughen polypropylene with elastomers, such as ethylene propylene rubber, POE, SBS, etc. The technology is relatively mature, but the main disadvantage is that the flow properties of the material are not good, and the rigidity and strength also decrease.