acetálgyanta

Acetálgyanta, also known as polyoxymethylene (POM) or acetal, is a high-performance thermoplastic polymer. It is characterized by its excellent mechanical properties, including high stiffness, strength, and creep resistance. Acetálgyanta also exhibits low friction, good wear resistance, and good chemical resistance to a wide range of solvents and fuels. Its low moisture absorption contributes to dimensional stability.

The synthesis of acetálgyanta typically involves the polymerization of formaldehyde. Two main types exist: homopolymers and copolymers. Homopolymers, produced by the direct polymerization of formaldehyde or the depolymerization of paraformaldehyde, offer higher stiffness and tensile strength. Copolymers are produced by the copolymerization of formaldehyde with a small amount of a cyclic ether, such as ethylene oxide. This copolymerization enhances thermal stability and resistance to alkaline hydrolysis compared to homopolymers.

Acetálgyanta finds widespread application in various industries due to its versatile properties. It is commonly used in the automotive sector for gears, fuel system components, and interior parts. In the consumer goods industry, it is found in appliance parts, zippers, and toy components. Its precision and durability also make it suitable for medical devices and industrial machinery parts. The material can be processed using standard thermoplastic techniques such as injection molding, extrusion, and blow molding.