Overview
Scratch-resistant POM (Polyoxymethylene) is a high-performance engineering thermoplastic prized for its mechanical strength, low friction, and resistance to abrasion. It is widely used in precision parts where durability and dimensional stability are critical. POM is available in two primary grades: homopolymer (POM-H) and copolymer (POM-C). The scratch-resistant variant often includes additives to enhance surface hardness, making it ideal for applications prone to wear.
Physical and Chemical Properties
Scratch-resistant POM exhibits high tensile strength, rigidity, and creep resistance, even under continuous load. Its low coefficient of friction makes it suitable for dynamic components like gears and bearings. The material is chemically resistant to hydrocarbons, alcohols, and weak acids but may degrade in strong acids or oxidizing agents. Its moisture absorption is minimal, ensuring stable performance in humid environments.
Main Applications
In the automotive industry, scratch-resistant POM is used for fuel system components, seatbelt mechanisms, and interior trim due to its wear resistance. Electronics benefit from its electrical insulation properties in connectors and housings. Consumer goods like zippers, kitchen utensils, and toys leverage POM's smooth surface and durability. Industrial applications include conveyor belts, pump parts, and precision gears.
Safety and Storage
POM dust can irritate respiratory systems; proper ventilation and masks are recommended during machining. Storage should avoid temperatures above 50°C to prevent gradual degradation. Scrap material can be recycled, but contamination with other plastics must be minimized. Disposal should follow local regulations for engineering plastics.
B2B Procurement Guide
When procuring scratch-resistant POM, specify the required grade (POM-H for higher stiffness, POM-C for better chemical resistance). Confirm MOQs and lead times, as specialty grades may have longer delivery periods. Request test certificates for mechanical properties and ensure suppliers comply with industry standards like ISO 9001. For large orders, negotiate bulk pricing and verify logistics options for moisture-sensitive shipments.
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