UHMWPE WESTLAKE Lennite SD-PUse performance

UHMWPE high molecular weight (HDPE molecular weight is usually only 2 to 30 million) gives excellent performance, but are affordable, excellent performance engineering thermoplastics, it focused almost entirely on the advantages of all kinds of plastic, with ordinary polyethylene and other engineering plastics unparalleled abrasion resistance, impact resistance, self-lubrication, corrosion resistance, impact energy absorption, resistance to low temperature, health, non-toxic, difficult to stick, easy to absorb water, less dense overall performance. In fact, there is not yet a simple polymer materials both so numerous excellent performance.
1, wear resistance
UHMWPE wear resistance ranks highest in the plastic, and more than some metals, UHMWPE wear resistance compare with other materials. Compared with other engineering plastics, the UHMWPE mortar abrasion index only PA66, 1/5, HEPE and PVC, 1/10; compared with metals, carbon steel of 1/7, 1/27 of the brass. Such a high resistance to abrasion, resulting in plastic wear experiments difficult to test the degree of abrasion resistance, and thus a specially designed mortar abrasion testing device. UHMWPE wear resistance proportional to molecular weight, the higher the molecular weight, the better its resistance to wear.
2, the impact resistance
The impact strength of the UHMWPE, among the best in all the engineering plastics, UHMWPE impact strength comparison with other engineering plastics, and the impact strength of UHMWPE approximately 2 times resistant to impact PC, ABS 'is 5 times more than 10 times, POM and PBTP. The impact resistance is so high that the normal impact test method is difficult to make the fracture failure. The impact strength with the molecular weight increases and reaches a maximum in the molecular weight of 1.5 million, and then continues to increase with the molecular weight gradually decreased. It is worth noting that it in liquid nitrogen (-195 ° C), excellent impact strength can be maintained, this feature is not other plastic. In addition, it is in the repeated impact of surface hardness higher.
3, self-lubricating
UHMWPE extremely low friction coefficient (0.05 to 0.11), and it is self-lubricating excellent. Table 1 UHMWPE comparison with other engineering plastics friction factor. As can be seen from Table 1, the UHMWPE Activity rub factor under the conditions of the water lubrication is PA66 and POM 1/2, in the absence of lubrication conditions after the plastic self-lubricating property is preferably polytetrafluoroethylene (PTFE) ; when it is working in the form of sliding or rotating, even better than steel and brass lubricating lubrication. Therefore, in the field of tribology UHMWPE known as the ideal cost / performance of the friction material.

UHMWPE	WESTLAKE	Lennite	CN-P
UHMWPE	WESTLAKE	Lennite	SD-P

Key Words：SD-P，UHMWPE SD-P，Lennite SD-P，WESTLAKE SD-P