Automobile interior trim part material and preparation method thereof

Abstract

The invention discloses an automobile interior trim part material which is characterized by being prepared from raw materials in percentage by weight: 70-90 percent of polypropylene, 5-25 percent of talcum powder, 0.1-7 percent of scratch resistant agent, 0.1-1 percent of processing aid, 0.05-0.8 percent of stabilizing agent, 0.1-2 percent of antioxidant, 0.05-0.8 percent of acid absorbent and 0.1-7 percent of toner; the scratch resistant agent is a nanometer-modified polysiloxane polymer elastomer having the molecular weight within 60-1000,000 range; and a nanometer modified agent is polyhedral oligomeric silsesquioxane. The automobile interior trim part material disclosed by the invention has the advantages of excellent scratch resistant performance, low cost and excellent heat stabilizing performance, impact resistant performance, strength, tenacity and other combination properties and well meets the requirement of an automobile industry on the good scratch resistant performance and the good combination properties. The preparation method of the automobile interior trim part material disclosed by the invention can be used for industrial scale production. The special polypropylene material used in the invention can be used for interior trim parts such as an automobile instrument panel, a central console box, an upright post, a tailboard lining, a seat, an inner side wall of an automobile door and the like.

Description

technical field [0001] The invention relates to a material used for automobile interior parts and a preparation method thereof, in particular to a scratch-resistant polypropylene special material for automobile interior decoration and a preparation method thereof. The patented product of the invention can be used for special materials for interior parts such as automobile dashboards, central storage boxes, pillars, tailgate linings, seats and inner side walls of car doors, and belongs to the field of polymer materials. Background technique [0002] Polypropylene (PP) has the advantages of low density, high cost performance, excellent heat resistance, rigidity, chemical corrosion resistance, easy processing and recycling, etc., so it has been widely used in automobiles and has become one of the most popular plastics for automobiles. The variety with the largest consumption and the fastest development speed. However, PP materials have poor heat resistance, low rigidity, low...

AI Technical Summary

Problems solved by technology

[0012]Comprehensively compare the above four common methods of improving the scratch resistance of polypropylene: adding fillers to improve the scratch resistance of PP surface is a relatively economical and effective method , a widely used method, but it is difficult to improve the overall performance of the material by using fillers alone; there are many kinds of lubricants added at present, but the efficiency is generally low, and efficient lubricants are expensive; the effect of nucleating agents on pure PP systems Obviously, it is difficult to promote the crystallization in the PP / talcum powder system, and the cost of the nucleating agent is high, and the process requirements are relatively strict; the biggest disadvantage of the method of preparing the blended alloy is that other polymers compounded with PP are all It is a high-grade engineering plastic, and the cost is relatively high