The Performance and Characteristics of UHMWPE
Molecular Formula：—(—CH2-CH2—)—n
Properties: Plolyethylene with a Molecular weight of 1 – 6 Million
Density: 0.936 ~ 0.964 g/cm3
The thermal deformation temperature: 85 ℃ (0.46 MPa)
The melting point: 130 ~ 136 ℃
Ultra-high molecular weight polyethylene (UHMWPE), polyethylene molecular weight is 1 million - 4 million.
UHMWPE characteristics as follows: excellent abrasion resistance, good low temperature impact resistance, self-lubrication, non-toxic, water resistance, chemical resistance, heat resistance is superior to the general PE, defect is low heat resistance (thermal deformation temperature), processing formability is poor, the surface hardness, rigidity, creep resistance is better than general engineering plastics, expansion coefficient is larger.
UHMWPE illiquid, high viscosity, melting condition is rubber with high viscoelastic body, can use only the early forming, pressing and sintering method is currently available extrusion, injection molding and blow molding method for processing.
UHMWPE can replace carbon steel, stainless steel, bronze and other materials for textile, papermaking, food machinery, transportation, medical, coal, chemical and other departments. For example, the parts of the textile industry are resistant to impact wear, such as technical shuttle, shuttle rod, gear, joint, sweep rod, buffer block, eccentric block, shaft sleeve, swing effect, etc. The paper industry is used to make box cover, water scraping board, compaction parts, joint, and transmission mechanical seal shaft rod, deviation guide wheel, filter etc. The transportation industry is made of powder material, hopper, chute lining.
UHMWPE can make all kinds of mechanical parts, including gear, worm wheel, worm and bearing. Chemical pump, valve, damper, filter plate. Medical treatment can also be used for heart valves, short surgical parts, artificial joints and birth control implants. Sports on ice flooring, rolling earth, skis, motor sleigh parts. UHMWPE can make high modulus fiber, make airplane seat, Marine, fishery, etc.
UHMWPE application scope and polyamide, pate, wear resistance than carbon steel, gears, bearings, bearing, the star wheel, valves, pumps, guide rail, the packing, the equipment lining, sliding board, artificial joints, such as ropes, etc.
