POM Copolymer Granules

POM Copolymer Granules combine high mechanical strength, low moisture absorption, and excellent wear resistance in a form optimized for injection molding, extrusion, and compounding. Copolymerization enhances resistance to thermal degradation, enabling stable performance in automotive, consumer electronics, and industrial gear systems. Industries use POM copolymer granules for producing precision gears, pump components, and structural housings. Specific applications include low-noise gear trains in office equipment, fuel system parts resistant to hydrocarbons, and high-strength clips and fasteners. In research, granules are used to develop filled and reinforced POM blends, study long-term creep resistance, and evaluate surface modifications to improve lubricity. The combination of processability, durability, and consistent mechanical properties ensures their role in high-performance manufacturing.

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Properties

Reference & Citations

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Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Poor
Acids - dilute	Good-Fair
Alcohols	Good-Fair
Alkalis	Good
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Poor
Ketones	Good - Fair

Electrical Properties

Element	Value
Dielectric constant @1MHz	3.7-4.4
Dissipation factor @ 1MHz	0.006-0.18
Dielectric strength( kV mm⁻¹ )	20@2.3mm
Surface resistivity( Ohm/sq )	10¹⁵
Volume resistivity( Ohmcm )	10¹⁵

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Poor
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	15
Water absorption - equilibrium( % )	0.6-0.8
Water absorption - over 24 hours( % )	0.2-0.25
Density( gcm⁻³ )	1.41

Mechanical Properties

Element	Value
Hardness - Rockwell	M80
Poisson's ratio	0.35
Elongation at break( % )	15-40
Tensile modulus( GPa )	2.3-2.8
Izod impact strength( J m⁻¹ )	70-80
Tensile strength( MPa )	60-70

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	160
Heat-deflection temperature - 1.8MPa( C )	110
Lower working temperature( C )	-40
Upper working temperature( C )	80-120
Specific heat( J K⁻¹ kg⁻¹ )	1500
Thermal conductivity( W m⁻¹ K⁻¹ )	0.23-0.3@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	80-120