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Polyacetal, also commonly known as acetal or polyoxymethylene (POM), is a formaldehyde-based, semi-crystalline engineering thermoplastic which contains the functional group of a carbon bonded to two -OR groups. It is 100% recyclable. POM is known as polyformaldehyde, polymethylene glycol and polyoxymethylene glycol.
Details
POM K300
Polyoxymethyene resins demonstrate well-balanced properties ranging for mechanical to physical and flammability performance. The key benefits of POM resins include:
Excellent mechanical properties over a temperature range upto 140°C, down to -40°C
High tensile strength, rigidity and toughness (short-term)
Low tendency to creep (as compared to nylon) and fatigue (long-term). Not susceptible to environmental stress cracking
High degree of crystallinity and excellent dimensional stability
Excellent wear resistance
Low coefficient of friction
Good resistance to organic solvents and chemicals (except phenols) at room temperature
Low smoke emission
High gloss surfaces
Low moisture absorption
Poor resistance to strong acids, bases and oxidizing agents.
Burns easily without flame retardants due to high oxygen content
Poor thermal stability without suitable stabilizer system
Limited processing temperature range
High mold shrinkage
Poor resistance to UV radiation. Prolonged exposure lead to color change, enbrittlement, and loss of strength
Low surface energy and hence difficult to bond without surface treatment
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