Overview
Formosa POM (Polyoxymethylene) is a premium engineering thermoplastic produced by Formosa Plastics Corporation, a leading global chemical manufacturer. It belongs to the acetal resin family and is renowned for its exceptional mechanical strength, dimensional stability, and resistance to chemicals and wear. POM is available in homopolymer and copolymer variants, with the latter offering improved thermal and chemical resistance. This material is widely adopted in industries requiring precision parts, such as automotive, consumer electronics, and industrial machinery. Its low moisture absorption and high fatigue resistance make it ideal for dynamic load-bearing applications. Formosa POM complies with international standards, including FDA and RoHS, ensuring suitability for food-contact and electronic applications.
Physical and Chemical Properties
Formosa POM exhibits a crystalline structure, contributing to its high tensile strength (up to 70 MPa) and rigidity. Its low coefficient of friction (0.1–0.3) rivals that of PTFE, making it suitable for sliding components. The material maintains stability across a temperature range of -40°C to 100°C, with short-term resistance up to 140°C. Chemically, POM resists hydrocarbons, alcohols, and weak acids but degrades in strong acids, bases, and oxidizing agents. Its inherent flame retardancy (UL94 HB rating) and dielectric properties further expand its utility in electrical applications. Unlike many plastics, POM has minimal creep under sustained loads, ensuring long-term dimensional accuracy.
Main Applications
In the automotive sector, Formosa POM is used for fuel system components, seatbelt mechanisms, and gear assemblies due to its oil and grease resistance. The electronics industry leverages its insulation properties for connectors, switches, and housings. Industrial applications include conveyor belts, pump impellers, and valve parts, where its wear resistance reduces maintenance costs. Consumer goods like zippers, kitchen utensils, and toy parts benefit from POM’s smooth surface finish and food-grade compliance. Medical devices, though limited, utilize sterilizable POM grades for non-implantable components.
Safety and Storage
POM processing (e.g., injection molding) requires ventilation to mitigate formaldehyde emissions above 200°C. Dust inhalation during machining should be prevented with NIOSH-approved respirators. Finished parts are generally safe for end-users unless exposed to high heat or flames. Storage recommendations include sealed containers to prevent moisture absorption, which can cause surface defects during molding. Bulk pellets should be dried at 80–110°C for 2–4 hours before use. Shelf life is typically 12 months under proper conditions (humidity <50%).
B2B Procurement Guide
Buyers should specify requirements such as UV stabilization (for outdoor use), glass-fiber reinforcement (for enhanced strength), or FDA compliance (for food contact). MOQs for Formosa POM typically start at 1 metric ton, with discounts for larger orders. Lead times vary from 2–6 weeks depending on grade availability. Reputable distributors provide material certificates (CoA) and SDS documentation. For custom formulations (e.g., colored or impact-modified grades), trial batches are advisable. Spot prices fluctuate with raw material (formaldehyde) costs and regional demand.
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