At present, with the rapid development of the automotive industry, lightweight, safety, comfort and environmental protection are the main trends in the industrial development of the world's automotive industry. Plastics and composite materials are important automotive materials, and in automotive plastics, Propylene (PP) has a low density, high cost performance, excellent heat resistance, rigidity, chemical resistance, easy processing and recycling, and has been widely used in automobiles, and it has become the largest and most developed in automotive plastics. One of the fastest varieties.

However, the scratch resistance of PP is obviously poor. This performance is the key performance of automotive interior applications such as instrument panel, console and door panel skin, which greatly reduces the aesthetics of the product. The plastics and automotive industries are actively looking for solutions to improve the scratch resistance of PP. At the same time, the characteristics of the scratch-resistant agent itself tend to cause the content of volatile organic compounds in the PP to be too high, and can not meet the requirements of the odor, atomization and the like of the automobile interior parts. Therefore, how to solve the odor emission and scratch resistance of PP at the same time has become the main direction and goal of people's exploration.

Second, the general situation

Talc powder has high utilization value in the plastics industry. Under the premise of ensuring increment and enhancing quality, in order to strive for high profit rate, talc powder must be refined and surface-activated. The modified talcum powder of PP plastic will be an important application field of talc in the plastic industry. It is necessary to design talc products for the needs of different plastic products.

The low-emission scratch-resistant modified powder is a modified talc-filled PP specially developed based on PP with poor scratch resistance and affecting the aesthetic appearance and odor of automotive interior products, and is applied to automotive interior parts. It is a modifier combined with a scratch-resistant agent and an odor adsorbent and then a special process for surface treatment of talc powder to improve interfacial adhesion and odor adsorption properties, thereby improving low-spraying and scratch resistance. Functionally modified powder for rubbing performance. Parts filled with normal talcum powder may be affected by "scratch whitening", but low-scratch scratch-resistant modified talc powder can improve scratch resistance.

Low-spraying scratch-resistant modified talcum powder, one can reduce the cost of filler; Second, improve the compatibility between talc and plastic raw materials, increase the modification effect; Third, the odor emission characteristics of PP composites are weakened And improved scratch resistance.

Third, the application

The low-emission scratch-resistant modified talc powder is filled in PP, so that the PP composite material has superior scratch resistance and odor emission characteristics, and can be applied to automotive interior parts.

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