Spray-free scratch-resistant high polymer material for automobile exterior parts and preparation method of spray-free scratch-resistant high polymer material

Abstract

The invention discloses a spray-free scratch-resistant high polymer material for automobile exterior parts. The spray-free scratch-resistant high polymer material is prepared from the following raw materials in parts by weight: 71.0 to 83.6 parts of amide polymer, 34.8 to 39.2 parts of acrylic polymer, 2.5 to 3.8 parts of compatilizer, 10 to 20 parts of mineral powder, 6.3 to 9.0 parts of metal pigment powder, 0.5 to 2.5 parts of antioxidant, 0.1 to 0.5 part of light stabilizer and 0.3 to 0.7 part of scratch-resistant agent, wherein the scratch-resistant agent is prepared by mixing full-vulcanized butadiene styrene rubber powder and polysiloxane polymer according to the weight ratio of 1:(0.5 to 0.8). The invention further provides a preparation method of the spray-free scratch-resistant high polymer material for the automobile exterior parts. The spray-free scratch-resistant high polymer material for the automobile exterior parts has the advantages of good mechanical strength and shock resistance, excellent scratch resistance, good metallic feeling of appearance, energy conservation and environmental friendliness, and the surface painting treatment is not needed in a following process.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a spray-free anti-scratch polymer material for automobile exterior decoration parts and a preparation method thereof. Background technique [0002] The application of plastics in automobiles mainly includes interior parts, exterior parts, functional parts and structural parts, and these parts generally need to be painted to achieve effects such as beautiful matte, high-gloss or flashing, metallic texture, etc. It protects the base material to achieve functions such as weather resistance and scratch resistance. But painting will bring three problems: first, the painting process is very harmful to the environment, causing environmental pollution; Recycling and reuse leads to waste of resources; third, due to the complexity of the painting process, basic links such as pretreatment, coating and transportation need to be added, and some painting processes also require multi...

AI Technical Summary

Problems solved by technology

But painting will bring three problems: first, the painting process is very harmful to the environment, causing environmental pollution; Recycling and reuse leads to waste of resources; third, due to the complexity of the painting process, basic links such as pretreatment, coating and transportation need to be added, and some painting processes also require multiple production processes such as primers, topcoats and UV curing paints. Complicated procedures may cause yield problems, which greatly increases the processing cost of plastic parts

For example, the patent CN101173074A discloses a polypropylene composition with scratch resistance and its preparation method. The scratch resistance of polypropylene is improved by adding lubricant aliphatic primary amide, but the polymer material after adding lubricant is During long-term use, there will be problems such as lubricant precipitation, sticky and frosty surface, etc., which will affect the appearance of the product

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