LUBMER™ LS4140 UHMWPE Granules

LUBMER™ LS4140 UHMWPE Granules are engineered ultra-high-molecular-weight polyethylene materials distinguished by their superior wear resistance, high toughness, and low friction properties, making them ideal for high-performance engineering and biomedical uses. Their resistance to chemical attack and environmental stress cracking ensures long-term stability in harsh operating environments. Primary applications span across advanced composites, orthopedic implants, and industrial machinery components, where durability and performance reliability are crucial. Specific technologies benefiting from LS4140 include additive-manufactured UHMWPE parts with optimized flexural properties, conductive polymer composites for electromagnetic interference (EMI) shielding, and high-strength orthopedic sutures. In research, these granules have been pivotal in exploring impact compaction methods, the design of multifunctional composites with carbon nanostructure networks, and the improvement of biomedical-grade materials. By combining exceptional strength, chemical resistance, and adaptability for advanced processing, LUBMER™ LS4140 UHMWPE Granules stand out as a cornerstone material in both industrial manufacturing and scientific innovation, supporting progress in aerospace, medical devices, and next-generation polymer composites.

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Properties

Reference & Citations

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Material Properties for Polymers

Chemical Resistance

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

Mechanical Properties

Element	Value
Coefficient of friction	0.1-0.2
Hardness - Rockwell	R50-70
Poisson's ratio	0.46
Elongation at break( % )	500
Tensile modulus( GPa )	0.2-1.2
Izod impact strength( J m⁻¹ )	1000
Tensile strength( MPa )	20-40

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.3
Dissipation factor @ 1MHz	1-10x 10⁻⁴
Dielectric strength( kV mm⁻¹ )	28
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	10¹⁸

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Fair
Resistance to Ultra-violet	Poor
Limiting oxygen index( % )	17
Water absorption - over 24 hours( % )	0.01
Density( gcm⁻³ )	0.94

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	69
Heat-deflection temperature - 1.8MPa( C )	42
Upper working temperature( C )	55-95
Specific heat( J K⁻¹ kg⁻¹ )	1900
Thermal conductivity( W m⁻¹ K⁻¹ )	0.42-0.51@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	130-200