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Low odor scratch resistant polypropylene

Shanghai Risheng introduces a low-odor scratch-resistant polypropylene material. This material is widely used in automotive interior parts and meets the scratch resistance and low odor requirements of polypropylene materials for automotive interior parts.

 

At present, with the rapid development of the automobile industry, lightweight, safety, comfort and environmental protection are the main trends in the development of the world's automobile industry. Plastics and their composite materials are important automotive materials. Among automotive plastics, polypropylene With low density, high cost performance, excellent heat resistance, rigidity, chemical corrosion resistance, easy processing, molding and recycling, etc., are widely used in automobiles, become the largest amount of automotive plastics, the fastest growing varieties.

 

However, the surface scratch resistance of polypropylene material is poor, which greatly reduces the aesthetic degree of the product, and the scratch on the surface of the product will also lead to stress concentration, which limits its performance. At the same time, due to the characteristics of the scratch-resistant agent itself, the volatile organic content of the material is too high, which cannot meet the requirements of the automobile interior parts for odor, atomization and other properties. Therefore, it is an important research topic to improve the surface scratch resistance of polypropylene materials without affecting its odor. Scratch is a way of damage on the surface of materials, its type and mechanism are quite complex, and there are many influencing factors. The molecular structure of polypropylene, fillers, additives, lubricants and impact modifiers all affect the scratch behavior of polypropylene. The material yields under the action of indentation and sliding forces or lateral (lateral) forces, resulting in ductile/brittle failure resulting in scratches. In scratches, the uneven surface produces uneven light scattering and "scratch whitish". Solutions to improve scratch performance include minimizing polymer undersurface roughness and reducing the shoulder of the scratch to produce as little light scattering as possible and as little scratch visibility as possible. The odor of modified polypropylene materials is mainly caused by the addition of various additives, so the selection of appropriate additives is the main method to improve its odor. As a scratch-resistant agent, its main chemical composition is reactive high polysiloxane. The smell of this kind of chemical substance itself is relatively heavy, so the smell of the material will be aggravated when it is added to the polypropylene material. Therefore, choosing a suitable scratch-resistant agent is an important way to reduce the odor of materials.

 

Through the adjustment of process and formula and the development of equipment, Shanghai Risheng New Technology Development Co., Ltd. not only maintains the comprehensive performance of polypropylene materials, but also solves the shortage of polypropylene materials in scratch resistance and the problem of excessive odor of general scratch-resistant polypropylene materials.

 

This technology has successfully promoted the application of polypropylene materials in automotive interior parts, which is conducive to the application trend of lightweight, comfort and environmental protection of automobiles.

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