Technical Routes for POM Modification Research

  POM (polyoxymethylene) modification can be achieved through several routes:

  Filling and Reinforcement: Incorporating inorganic materials like Al₂O₃, MgO, glass fiber, carbon fiber, glass beads, mica, talc, calcium carbonate, silica, or potassium titanate enhances strength, stiffness, hardness, heat distortion temperature, and dimensional stability. These reinforced POM materials are used in complex mechanical structures, thin-walled precision parts, and engineering products.

  Toughening and Blending: Using thermoplastic polyurethane (TPU), nitrile rubber (NBR), modified polyolefins, polyamides, or lignocellulose as elastomeric tougheners improves impact resistance. Mechanical blending and graft copolymerization methods produce super-tough POM alloys.

Functionalization: Adding organic oil, silicone oil, PTFE, or molybdenum disulfide reduces friction coefficient and wear rate. Lubricated POM is suitable for gears, rollers, cams, connecting rods, and other transmission components in mechanical and electrical systems. Specific approaches include:

• Adding low-friction polymers like PTFE, PE, or UHMWPE
• Incorporating fibers such as glass or carbon fiber
• Using lubricants like silicone oil, mineral oil, or grease