POM with high crystallinity and melting point

POM has high strength, rigidity, good elasticity, and good wear resistance. Its mechanical properties are excellent, with a specific strength of up to 50.5MPa and a specific stiffness of up to 2650MPa, which is very close to metals. The mechanical properties of POM change little with temperature, while the variation of copolymer POM is slightly greater than that of homopolymer POM. POM has a high impact strength, but its conventional impact strength is inferior to ABS and PC; POM is sensitive to notches, and notches can reduce impact strength by up to 90%. The fatigue strength of POM is very outstanding. After 10 alternating loads, the fatigue strength can reach 35MPa, while PA and PC are only 28MPa. The creep deformation of POM is similar to that of PA, only 2.3% at 20 ℃, 21MPa, and 3000h, and is minimally affected by temperature. POM has a low friction coefficient, good wear resistance (POM>PA66>PA6>ABS>HPVC>PS>PC), a high ultimate PV value, and good self-lubricating properties. POM products are prone to produce screaming noise when subjected to high loads during grinding. Polyamide

Electrical performance

POM has good electrical insulation and is almost unaffected by temperature and humidity; The dielectric constant and dielectric loss vary very little over a wide range of temperature, humidity, and frequency; Excellent arc resistance and can be maintained at high temperatures. The dielectric strength of POM is related to its thickness, with 82.7kV/mm at a thickness of 0.127mm and 23.6 kV/mm at a thickness of 1.88mm.

Environmental performance Polypropylene

POM is not resistant to strong alkalis and oxidants, and has a certain degree of stability towards oleic acid and weak acids. POM has good solvent resistance and can withstand hydrocarbons, alcohols, aldehydes, ethers, gasoline, lubricants, and weak bases, and can maintain considerable chemical stability at high temperatures. Low water absorption and good dimensional stability. General Grade Polystyrene

POM has poor weather resistance, and its mechanical properties decrease under long-term exposure to ultraviolet radiation, resulting in surface pulverization and cracking.

Formability

Crystalline materials have a narrow melting range, fast melting and solidification, and crystallization occurs when the material temperature is slightly lower than the melting temperature. Medium liquidity. Low moisture absorption, can not be dried.