1、 Ultra high molecular weight polyethyleneUHMWPE is a thermoplastic engineering plastic with a molecular weight exceeding one million. Its density is 0.93-0.95, it can float on the water surface, and has excellent wear resistance (ranking first among engineering plastics), impact resistance, self-lubricating properties, and low temperature resistance (-269 ℃).
2、 Core performance (including key data)
1. Super wear-resistant: The wear amount is much lower than that of ordinary steel/nylon; ASTM D4060 test for high-quality plates at 0.01 g/1000 rpm; The wear resistance is about 6% of carbon steel; 8x, Nylon 4– 5 times; The higher the molecular weight, the stronger the wear resistance (4 million+30% higher than 2.5 million level)
2. High impact resistance+low temperature resistance: The impact strength at room temperature is 10 times that of nylon 66; The brittleness temperature is as low as -196 ℃ (liquid nitrogen environment), and it maintains excellent toughness at -40 ℃ without the risk of notch brittle fracture
3. Extremely low friction and self-lubricating: friction coefficient 0.05– 0.1 (close to PTFE), no additional lubrication required, can avoid oil contamination in food/medical scenarios
4. Chemical corrosion resistance: resistant to the vast majority of acids, bases, salts, and organic solvents (except for strong oxidizing acids such as concentrated nitric acid); Water absorption rate<0.01%, not easily hydrolyzed
5. Non toxic and hygienic: compliant with FDA food contact and ISO 10993 medical biological standards; Can be used for food, medical, and drinking water contact parts
3、 Main processing techniques and modified varieties
1. Molding process and molding method: suitable for thick plates, large-sized, high wear-resistant plates, with uniform density and stable performance
2. Modified model
1. Anti static type: adding carbon black/conductive filler, surface resistance of 10 ?– 10?Ω For use in coal mines/explosion-proof areas
2. Flame retardant type: meets the flame retardant requirements for underground/electrical applications
3. Wear resistant enhanced type (with added ceramic particles/carbon fiber), weather resistant type (UV stabilizer)
4、 Typical application scenarios
1. Industrial wear-resistant lining plate: coal bin/chute/hopper lining plate, belt conveyor guide groove, wear-resistant parts for mineral processing equipment
2. Construction/Infrastructure: Roadbed slabs, leg pads, bridge support sliders, tunnel waterproof and wear-resistant layers
3. Food/Agriculture: Grain/Feed Conveyor Guides, Slaughter Equipment Pads, Aquaculture Pool Lining
4. Medical/Sports: Artificial joint components, simulated ice rinks, wear-resistant sliders
5. Chemical/Environmental Protection: Corrosion resistant tank lining, wear-resistant parts for sewage treatment equipment