POM•Polyoxymethylene(Seagull)English Name: Polyformaldehyde, abbreviated as: POM or Acetal. Polyoxymethylene is a high melting point, high crystallinity plastic. It can be divided into copolymer and homopolymer, with the most common semi-finished product on the market being POM-C copolymer. Due to its excellent comprehensive performance, smooth surface, and glossiness, POM is very suitable for mechanical processing, especially for the manufacture of precision parts. It can be used for a long time in the temperature range of -40 to 100°C.
Copolymer polyoxymethylene (POM-C) has stronger resistance to hydrolysis, strong alkalis, and thermal oxidative degradation compared to homopolymer polyoxymethylene. Homopolymer polyoxymethylene (POM-H) has higher mechanical strength, rigidity, hardness, and creep resistance than POM-C, as well as a lower coefficient of thermal expansion, and better wear resistance.
Delrin® AF is a mixture of POM-H and PTFE. It is softer, less rigid, and smoother compared to pure POM-H. This material provides improved sliding performance.
Superior Characteristics:
· Higher mechanical strength, rigidity, and hardness
· Toughness and good creep resistance
· High impact strength even at low temperatures
· Low water absorption, good dimensional stability
· Good sliding performance and wear resistance
· Good electrical insulation and dielectric properties
· Superior machinability
· Physiologically inert, suitable for food contact
· Good oil resistance and resistance to peroxides.
Disadvantages:
· Not resistant to acids, not resistant to strong alkalis
· Not resistant to ultraviolet radiation from sunlight
· Not self-extinguishing, keep away from fire.
Application Range:
POM is widely used in the manufacturing of various sliding and rotating machinery and precision parts such as: rollers, guide wheels, gears, bearings, bushings, fixtures, levers, handles, etc. It is widely used in industries including automotive, electronics, clothing, medical, machinery, sports equipment, etc.
Standard Stock Specifications:
Sheet: (0.5-1) x 1000 x 50M; (1-60) x 1000 x 2000mm; (8-150) x 610 x 1220mm;
Round bar: (5-250) x 1000mm;
Round tube: (25-500) x (10-375) x 1000mm
Colors: White, black. Other colors available for customization.
Modified products: Enhanced sliding properties (Delrin® AF), antistatic, glass fiber reinforced, POM+PE, medical grade, etc.
