Polypropylene compound for automobile fender and preparation method thereof

Abstract

The invention discloses a polypropylene compound for automobile fenders and a preparation method thereof. The polypropylene compound for automobile fenders comprises 89-19 wt% of polypropylene, 5-40 wt% of a flexibilizer, 1-5 wt% of polar monomer grafted olefin polymer, 0-2 wt% of a heat stabilizer, 0-2 wt% of a processing auxiliary agent, 0-2 wt% of a light stabilizer, and 5-30 wt% of talcum powder. The preparation method comprises the following steps: melting, mixing and dispersing polypropylene, the flexibilizer, polar monomer grafted olefin polymer, the heat stabilizer, the processing auxiliary agent, and the light stabilizer in a double screw extruder, feeding the talcum powder from a side feeding port into the double screw extruder, setting the temperature of each section of the extruder at 180-240 DEG C, and performing extrusion granulation. The material provided by the invention has the characteristics of low modulus, high impact, and excellent aging resistance, meets the requirements of low modulus, high impact, and aging resistance for automobile fenders, and realizes high performance of automobile fender materials.

Description

technical field

[0001] The invention relates to a polypropylene compound for automobile fenders and a preparation method thereof, and belongs to the field of polymer materials and their molding and processing. Background technique

[0002] With the development of automobile lightweight technology, plastic strip steel has become the development trend of the automobile industry, and polypropylene material plays an important role in automobile lightweight technology due to its excellent performance-price ratio and low density.

[0003] The main function of the car fender is to prevent the mud from splashing on the body or pedestrians when the car is driving on the muddy road, which will cause the body or the body to be unsightly. Therefore, in addition to the requirements of excellent weather resistance and aging resistance, the fender also requires the characteristics of low modulus and high impact. It is easy to deform and not easy to be damaged when subjected to external imp...