Ultra-high molecular weight polyethylene sheet has excellent performance

2022/12/13News 1060

Ultra-high molecular weight polyethylene sheet has excellent performance

Ultra-high molecular weight polyethylene sheet has excellent performance, and it belongs to the thermoplastic engineering plastic with moderate price and excellent performance. It almost concentrates the advantages of various plastics, and has abrasion resistance, impact resistance, self-lubricating, corrosion resistance, and impact energy absorption. , Low temperature resistance, sanitation, not easy to adhere, not easy to absorb water and other comprehensive properties. In fact, there is no polymer material that has so many excellent properties.

Abrasion resistance

Compared with other engineering plastics, the mortar abrasion index of UHMW-PE is only 1/5 of PA66 and 1/10 of HEPE and PVC; compared with metal, it is 1/7 of carbon steel and 1/27 of brass. Such high abrasion resistance makes it difficult to test the degree of abrasion resistance by the general plastic abrasion test method, so a mortar abrasion test device is specially designed. The wear resistance of UHMWPE is directly proportional to the molecular weight. The higher the molecular weight, the better the wear resistance.

Impact resistance

The impact strength of UHMWPE sheet, among all engineering plastics, the impact strength of UHMWPE ultra-high molecular weight polyethylene sheet is about 2 times that of impact-resistant PC, 5 times that of ABS, and more than 10 times that of POM and PBTP. The impact resistance is so high that it is difficult to break it using the usual impact test method. Its impact strength increases with the increase of molecular weight, reaching the maximum when the molecular weight is 1.5 million, and then gradually decreases as the molecular weight continues to increase. It is worth pointing out that it can also maintain excellent impact strength in liquid nitrogen (-195°C), a feature that other plastics do not have. In addition, it repeatedly impacts the surface hardness.

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