POM Homopolymer Granules

POM Homopolymer Granules offer high crystallinity, excellent stiffness, and low friction, making them ideal for manufacturing precision mechanical components via injection molding or extrusion. Compared to copolymers, the homopolymer variant delivers superior tensile and fatigue strength, though with slightly reduced resistance to hydrolysis and thermal oxidation. Industries employ POM homopolymer granules for automotive fuel system parts, precision gears, and high-load mechanical housings. Specific applications include gear wheels in compact drives, valve bodies in fuel handling, and lightweight yet rigid clips in consumer electronics. In research, granules are used to study polymer crystallization kinetics, assess long-term fatigue under cyclic loading, and develop reinforced POM composites with enhanced impact resistance. The balance of mechanical performance and processability ensures their role in high-precision engineering and durable component production.

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Properties

Reference & Citations

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Material Properties for Polymers

Chemical Resistance

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

Mechanical Properties

Element	Value
Coefficient of friction	0.2-0.35
Hardness - Rockwell	M94
Poisson's ratio	0.35
Elongation at break( % )	40-75
Tensile modulus( GPa )	2.9-3.1
Izod impact strength( J m⁻¹ )	75-130
Tensile strength( MPa )	70

Electrical Properties

Element	Value
Dielectric constant @1MHz	3.7
Dissipation factor @ 1MHz	0.005
Dielectric strength( kV mm⁻¹ )	20
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( % )	0.6-0.9
Water absorption - over 24 hours( % )	0.25
Density( gcm⁻³ )	1.42

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	170
Heat-deflection temperature - 1.8MPa( C )	135
Upper working temperature( C )	80-120
Specific heat( J K⁻¹ kg⁻¹ )	1500
Thermal conductivity( W m⁻¹ K⁻¹ )	0.22-0.24@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	122