U-shaped tubular HDPE screw conveyor lining plate High molecular polyethylene wear-resistant U-shaped lining plate

U-shaped liner is the use of ultra-high molecular weight polyethylene wear-resistant, self-lubricating, non-hanging, long service life characteristics, to be able to stand out in many engineering plastics.

Superior properties of ultra-high molecular weight polyethylene (UHMW-PE):

Abrasion resistance

The abrasion resistance of UHMWPE ranks the highest among plastics and exceeds some metals. Compared with other engineering plastics, the mortar abrasion index of UHMWPE is only 1/5 of that of PA66 and 1/10 of that of HEPE and PVC; 1/7 of carbon steel, 1/27 of brass. Such a high wear resistance makes it difficult to test its wear resistance by the general plastic wear test method, so a mortar wear test device is specially designed. The abrasion resistance of UHMWPE is proportional to the molecular weight. The higher the molecular weight, the better the abrasion resistance.

impact resistance

The impact strength of UHMWPE ranks among the best among all engineering plastics. The impact strength of UHMWPE 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 by the usual impact test method. The impact strength increases with the increase of the molecular weight, reaches the maximum value when the molecular weight is 1.5 million, and then gradually decreases with the increase of the molecular weight. It is worth pointing out that it can also maintain excellent impact strength in liquid nitrogen (-195 ° C), which is not found in other plastics. In addition, it has a higher surface hardness after repeated impact.

self-lubricating

UHMWPE has a very low coefficient of friction (0.05 to 0.11), so it has excellent self-lubricating properties. The kinetic friction factor of UHMWPE is 1/2 of that of PA66 and POM under water lubrication, and second only to polytetrafluoroethylene (PTFE) under non-lubricated conditions; when it works in sliding or rotating form, it is higher than steel and brass plus The lubricity after lubricating oil is even better. Therefore, in the field of tribology, UHMWPE is known as a very ideal friction material for cost/performance.