High-fluidity scratch-resistant spraying-free metallic-silvery-color modified polypropylene material for vehicles

Abstract

The invention belongs to the technical field of polymer materials, and particularly relates to a high-fluidity scratch-resistant spraying-free metallic-silvery-color modified polypropylene material for vehicles. Raw materials comprise the following components in parts by weight: 50 to 80 parts of PP resin, 5 to 20 parts of polyolefin elastomer, 10 to 40 parts of talcum powder, 0.5 to 5 parts of metal powder, 0.5 to 2 parts of a compatilizer, 0.5 to 2 parts of a dispersing agent, 1 to 3 parts of a scratch-resistant agent, 0.5 to 2 parts of a lubricant, 0.5 to 1 part of an antioxidant and 0.5 to1 part of an ultraviolet absorbent. On the basis of a common polypropylene formula, high-fluidity PP resin is used as a matrix; POE, small-particle-size talcum powder and medium-particle-size aluminum powder are added for modification and cooperate with a compatilizer, the dispersing agent, the scratch-resistant agent and the lubricant to prepare the spraying-free material with high fluidity andscratch resistance, so that the product meets the appearance requirements of high gloss and metallic silvery color and has the advantages of high quality, low cost, safety, environmental friendlinessand the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a modified polypropylene material, in particular to a metal silver-colored modified polypropylene material with high fluidity, scratch resistance and spray-free metal for vehicles. Background technique [0002] Modified polypropylene (PP resin) is one of the commonly used materials in the automotive field. Polypropylene with gorgeous and customizable appearance will be popular in the market when it is used in automobiles. Spraying technology is one of the common methods in the appearance processing of polypropylene plastics for vehicles. Spraying can make the material have a variety of colors and high-gloss appearance effects, and can realize customized processing. However, the current spraying process also has limitations: 1. The on-site operating environment is not up to standard, which may easily cause product pellets; 2. There are differences in the compatibility betw...

AI Technical Summary

Problems solved by technology

However, the current spraying process also has limitations: 1. The on-site operation environment is not up to standard, which may easily cause the product to granulate; 2. There are differences in the compatibility between the spray paint and polypropylene, and there is a risk of bottoming; 3. The volatilization of spray paint will affect the on-site operation. employee health risk

The Chinese patent with the publication number CN108559178A added aluminum-silver paste and pearlescent powder in order to achieve a good metallic silver effect on the spray-free PP material, but the aluminum flake powder needs to be specially polished and surface-treated and formed with a lubricant as a carrier. The mixture needs to be fed separately during preparation. The talcum powder, aluminum silver bars, pearl powder, and coupling agent are added to the side feed first, and then the remaining raw materials are added to the main feed. The steps are cumbersome and have high requirements for the injection molding process. poor universality

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