Composite material and preparation method thereof

Abstract

The invention provides a polypropylene composite material with a high impact resistant performance and a preparation method thereof. The polypropylene composite material is composed of the following components in parts by weight: 100 parts of polypropylene resin, 14 to 30 parts of superfine calcium carbonate filling material, and 7 to 15 parts of elastomer material; wherein the size of the superfine calcium carbonate filling material is 6000 to 7000 meshes; the filling material is subjected to a surface coupling treatment by stearic acid and then subjected to a surface treatment by aluminate; the used stearic acid accounts for 0.2 to 2% of the weight of the filling material, the treatment temperature is 90 to 120 DEG C; the used aluminate accounts for 0.5 to 1.5% of the filing material, and the treatment temperature is 90 to 120 DEG C. The rigidity of polypropylene material is not obviously reduced, at the same time, the naphthalene impact resistant performance is obviously improved, and the balance between rigidity and toughness is reached.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a preparation method of a high-impact polypropylene composite material, belonging to the field of polymer materials. Background technique [0002] Polypropylene (PP) is a general-purpose plastic with excellent comprehensive properties. High-strength and high-toughness PP composite materials can be obtained through blending and compounding. Such composite materials are widely used in automobiles, home appliances, packaging and other fields. In the automotive field, high-impact PP composite materials have become the mainstream of automotive bumper materials. Toughening modification is one of the main research directions in PP blending modification. There have been many research reports in this area at home and abroad [5 shed j, the developed high-impact PP has been widely used as a special automobile bumper. material. However, while improving the toughness...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of improving the impact performance of polypropylene composite materials in the prior art, and to significantly improve the impact performance of naphthalene under the condition that the rigidity of the polypropylene material will not be significantly reduced, so as to realize the rigidity of the modified material balance with toughness