Good Toughness POM Polyoxymethylene Granule

POM has good comprehensive properties, outstanding fatigue resistance and creep resistance, good electrical properties, etc. Since POM is a highly crystalline polymer, it has a high elastic modulus, high hardness and rigidity. It can be used for a long time at -40~100℃. And it is resistant to repeated impacts, with little change in strength. Strength is little affected by temperature and temperature changes. POM is the kind with the highest fatigue resistance among thermoplastic materials, and the creep is small.

The increase in toughness obviously improves the interface affinity between the matrix resin and thermoplastic polyurethane, and at the same time, it can overcome the formation of microcracks between the two phases that occur during the processing of the blend due to thermal expansion and contraction, which is beneficial to the mechanical properties. A relatively large increase. On the other hand, since POM is a highly crystalline polymer and has a large crystal structure, these larger spherulites near the notch become stress concentration points when the product is stressed, resulting in a very low notched impact strength of POM, increasing the The addition of the toughening agent makes the intermolecular force between the molecular chains of the blend; at the same time, it acts as a nucleating agent in the blend to increase the number of crystal nuclei in the blend, so the diameter of the spherulites is obvious The reduction of spherulite size reduces the possibility of stress concentration in the blend, effectively eliminates the stress concentration point near the notch, and is beneficial to the improvement of the notched impact strength of the blend.

Polyoxymethylene (POM) application:

1. Automobile industry: manufacture of automobile pumps, carburetor parts, oil pipes, power valve manufacturing, universal joint bearings, motor gears, crankshafts, handles, instrument panels, automobile window lifters, electric switches, seat belt buckles, etc.

2. In the machinery manufacturing industry: widely used as transmission components such as gears, drive shafts, chains, valves, valve stem nuts, bearings, cams, impellers, rollers, nozzles, guide rails, bushings, pipe joints and mechanical structural parts. ·

3. Electronics, electrical appliances, and household appliances: manufacturing plugs, switches, buttons, relays, washing machine pulleys, shafts and wheel shells of cassette tapes, electronic computer casings, and televisions, washing machines, refrigerators, telephones, tape recorders, and dishwashers of various parts.

4. In terms of precision instruments, manufacture shelf supports, covers, friction pads, and parts for clocks, cameras and other precision instruments. Polyoxymethylene is also widely used to replace metals and alloys.

Application range：