poly(oxymethylene)

poly(acetal)

poly(methylene oxide)

(POM)

Properties Glass transition temperature: -30oC. Melting temperature: 183oC. Amorphous density at 25oC: 1.25 g/cm3. Crystalline density at 25oC: 1.54 g/cm3. Molecular weight of repeat unit: 30.03 g/mol. Typical physical properties

Repeat Unit CH2O

Description

Polyoxymethylene (POM) is commonly used as a direct replacement for metals due to its stiffness, dimensional stability and corrosion resistance. Copolymers including ethylene oxide are quite common, primarily because they reduce the propensity for depolymerization at processing temperatures.

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