UHMW pulley/plastic pulley advantages: 1. wear resistance 2. impact strength 3. low friction coefficient 4. non-toxic
UHMW Properties 1. Extremely high wear resistance UHMW has 3 million or more molecular weight, the smallest wear index, which makes it have a very high capacity of anti-sliding friction. Its wear resistance is 6.6 times higher than normal alloy steel, 27.3 times that of stainless steel, 17.9 times that of phenolic resin, 6 times that of nylon 6, 4 times that of PE, and it increases the life of the implement substantially. 2. Very high impact resistance Of the existing engineering plastics, the value of the impact toughness of UHMW is the highest, and many materials will crack, break, split or surface stress fatigue in the explosion of serious or repeated impact. UHMW will not damage by cantilever beam impact test according to ISO 9001 standards, and can bear strong external impacts, internal overload and pressure fluctuation. 3. Corrosion resistance UHMW is a kind of structure of saturated molecules, so its chemical stability is very high. UHMW pulley/plastic pulley can withstand the erosion of potent chemical substances, and it is not subject to corrosion in other lye and acid except for some mild acid at high temperature outside. 4. Good self-lubrication UHMW pulley/plastic pulley contains the waxy substance itself, and its self-lubrication is very good. The frictional coefficient (196n, 2 hours) is only 0.219mn/m (ISO9001), so its self-lubrication is better than steel or brass with oil lubrication. 5. The unique resistance to low temperature The resistance to low temperature is excellent, and UHMW pulley/plastic pulley impact resistance and anti-abrasion can't change basically at minus 269 degrees centigrade. UHMW is the only available engineering plastics can work at temperatures close to absolute zero. Meanwhile, the adaptable temperature range of UHMW pulley/plastic pulley is large, and UHMW pulley/plastic pulley can be used within -269 to 80 degrees centigrade. 6. Not easy to form dirt UHMW pulley/plastic pulley has excellent surface non-adhesion and surface smoothness due to its small friction coefficient and non-polarity. 7. Long life-span The unsaturated genes of molecular chain of UHMW pulley/plastic pulley are less, and its fatigue resistance strength is more than 500 thousand times, and its environmental stress cracking resistance is more than 4000h, which is twice more than the PE. UHMW can still maintain more than 70% mechanical properties after it is buried and used for 50 years. 8. Some other characteristics UHMW pulley/plastic pulley can also absorb energy, absorb noise and resist static electricity, and holds shielding ability to the electron. UHMW pulley/plastic pulley is also water-repellant.
Plastic Pulley of UHMW