UHMWPE, ultra-high molecular weight polyethylene, boasts a chain length 10x that of standard HDPE, with molecular weights soaring to 6-10 million, marking its prominence in engineering plastics.
1. Key Aspect: UHMWPE's Uniqueness
UHMWPE's strengths: superior wear and impact resistance, low friction, and self-lubrication.
Outstanding Wear Resistance (Flagship Feature):
Topping plastics in wear resistance, 7x carbon steel, 6x nylon, surpassing many metals. In "mortar abrasion tests," it triples PTFE's performance.
Superior Impact Resistance:
Leading plastics in impact resistance, UHMWPE excels at -40°C, avoiding cracks. Its long molecular chains absorb impact energy effectively.
Ultra-Low Friction & Self-Lubrication:
Boasting a 0.07-0.11 friction coefficient, akin to water ice, UHMWPE self-lubricates, performing under minimal lubrication without material adhesion.
Outstanding resistance to chemical corrosion:
Withstands corrosion from most acids, bases, and solvents (except concentrated nitric and sulfuric acids), ensuring exceptional stability.
Extremely low density and lightweight:
With a density of just 0.93-0.94 g/cm³, it is lighter than water and among the lightest engineering plastics, weighing only 1/8 of steel.
Excellent water absorption resistance and non-stick properties:
Features an exceptionally low water absorption rate (<0.01%), a smooth surface, low foreign object adsorption, and minimal scaling.
Equipment Parts, UHMWPE/PP/PVC and Other Plastic Materials Processing Star Wheels
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