POM•Polyoxymethylene(Delrin)
English Name: Polyformaldehyde, Abbreviation: POM or Acetal. Polyoxymethylene is a high melting point, high crystalline plastic. It can be divided into copolymer and homopolymer, with POM-C copolymer commonly used in the market for semi-finished products. Due to its excellent overall performance and smooth, glossy surface, POM is very suitable for machining, especially for the manufacture of precision parts. It can be used for long periods in temperatures ranging from -40 to 100°C.
Copolymers of polyoxymethylene (POM-C) have better hydrolysis resistance, strong alkali resistance, and thermal oxidative degradation resistance compared to homopolymers. Homopolymers of polyoxymethylene (POM-H) offer higher mechanical strength, stiffness, hardness, and creep resistance, as well as a lower thermal expansion coefficient, while also having better wear resistance.
Delrin® AF is a blend of POM-H and PTFE. It is softer than pure POM-H, with reduced stiffness, and is smoother. This material provides excellent sliding performance.
Superior Characteristics:
· High mechanical strength, stiffness, and hardness
· Toughness and good creep resistance
· High impact strength even under low temperature conditions
· Low water absorption, good dimensional stability
· Good sliding properties and wear resistance
· Good electrical insulation properties and dielectric performance
· Excellent machinability
· Physiologically inert, can come into contact with food
· Good oil resistance and peroxide resistance.
Disadvantages:
· Not acid-resistant, not strong alkali-resistant
· Not resistant to sunlight and ultraviolet radiation
· Non-flame-retardant, cannot be near fire.
Application Range:
POM is widely used in the manufacture of various sliding and rotating machinery and precision parts such as rollers, guide wheels, gears, bearings, shaft liners, fixtures, levers, and handles. The industries using it span automotive, electronics, apparel, medical, machinery, sports equipment, and more.
Regular Stock Specifications:
Sheets: (0.5-1) x 1000 x 50M; (1-60) x 1000 x 2000mm; (8-150) x 610 x 1220mm;
Round rods: (5-250) x 1000mm;
Round tubes: (25-500) x (10-375) x 1000mm
Colors: White, Black. Other colors can be custom produced.
Modified Products: Enhanced sliding properties (Delrin® AF), antistatic, glass fiber reinforced, POM+PE, medical grade, etc.
