Description
Polyacetal, also known as polyoxyethylene (POM), is made from formaldehyde polymerization and is a crystalline thermoplastic polymer with high tensile strength, good elasticity, excellent abrasion resistance and low moisture absorption. This polymer is available in two types, homopolymer and copolymer, and can cover a wide range of applications. In addition, POM has the ability to retain properties at high temperatures for a long time, mechanical resistance to long-term stresses, and weather resistance, making it a good choice for many sensitive engineering components. Homopolymer and copolymer of this resin show excellent resistance to organic solvents. Above 70 C, these resins have excellent resistance to aliphatic, aromatic, and chlorine hydrocarbons. Polystyrene has excellent resistance to hot water and its copolymers are more resistant to hot alkalis. Also, at high temperatures, it has better thermal stability and hydrolysis and is easier to mold, but its homopolymers have better mechanical properties and higher melting point.
He excellent electrical and mechanical properties of polystyrene do not decrease under the influence of ambient humidity and do not decrease due to long-term operation. As a result, polystyrene has high dimensional and dielectric stability, and as a result, polystyrene will be a better choice for metal replacement than polyamide in many cases. The efficiency of sliding parts, underwater parts and precision parts with polystyrene will be great. Common uses for POM with injectable molding include high-performance engineering components such as small gear wheels, spectacle frames, ball bearings, ski fittings, fasteners, guns, knife handles, and locking systems. It is widely used in the electronics and automotive industries. The main applications of this material in buttons are connectors in electrical components, plumbing, gears, electronic components, automotive parts, home appliances, bearings, other injection parts.
