1959 DuPont first realized industrial production POM tradename Delrin, 1962 United States Celanese Corporation introduced the acetal copolymer product, trade name: Celcon. At present, POM manufacturers account for a large proportion of copolymerized products.
POM water absorption rate is greater than 0.2% , pre-drying before molding, POM melting temperature and decomposition temperature are similar, poor moldability, can be injection molding, extrusion, blow molding, rotational molding, welding, bonding, coating, printing, electroplating Machining and injection molding are the most important processing methods. The molding shrinkage rate is large, the mold temperature should be higher, or annealing treatment, or adding reinforcing materials (such as alkali-free glass fiber).
POM has high strength and light weight. It is commonly used to replace non-ferrous metals such as copper, zinc, tin and lead. It is widely used in industrial machinery, automobiles, electronic appliances, daily necessities, pipes and fittings, precision instruments and building materials.
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