Glass fiber enhanced polypropylene

Abstract

The invention relates to a glass fiber enhanced polypropylene, comprising components by weight of 55.5-95% of polypropylene, 5-45% of alkali-free glass fiber, 0.1-3.0% of heat stabilizer, 0.1-3.0% of synthetic resin, 0.2-8% of fire retardant, 0.1-2.0% of light stabilizer, 0.1-2.0% of ultraviolet ray absorber, 1.3-5.5% of other auxiliary agent and 3-12% of active carbon. The glass fiber enhanced polypropylene of the present invention has beneficial effects of wear resistance at low temperature, ageing resistance, decomposition resistance during long-term contact with hot metal, small contraction scope and contraction value, contraction cavity resistance, indenture resistance, deformation resistance and high product surface fineness.

Description

technical field

[0001] The invention relates to an organic polymer composite material, more specifically, relates to a glass fiber reinforced polypropylene. Background technique

[0002] Polypropylene (PP) is a semi-crystalline material. It is harder and has a higher melting point than PE. Because the homopolymer PP temperature is very brittle above 0C, many commercial PP materials are random copolymers with 1 to 4% ethylene or clamp copolymers with higher ethylene content. Polymer PP materials have a low heat distortion temperature (100C), low transparency, low gloss, and low rigidity, but have stronger impact strength. The strength of PP increases with the increase of ethylene content. The Vicat softening temperature of PP is 150C. Due to the high degree of crystallinity, this material has very good surface stiffness and scratch resistance properties. PP does not have environmental stress cracking problems. Usually, PP is modified by adding glass fibers, metal additi...