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Grade: Low Density Polyethylene (LDPE)
Formula: LDPE
Form: Granule
Material: Polyethylene (PE)
CAS Number: 9002-88-4
Commodity: Polymers
Color: Natural
LDPE Granules are characterized by their low density, flexibility, and excellent processability, which make them a highly versatile feedstock for polymer manufacturing. Their granular form allows for efficient melting, mixing, and extrusion, ensuring consistent quality in downstream processing. Industries including packaging, construction, and medical plastics rely heavily on LDPE granules for producing films, sheets, molded parts, and specialized composites. Specific applications include manufacturing paving stones from recycled LDPE granules blended with sand for improved strength and sustainability, preparation of antibacterial LDPE composites for medical uses, and extrusion into high-strength packaging materials. Research highlights advances in recycling processes that transform post-consumer LDPE waste into granules suitable for film production, as well as composite formulations that enhance mechanical properties, fire resistance, and antibacterial activity. In both industrial and research contexts, LDPE Granules serve as a critical input material, enabling sustainable recycling, product innovation, and advanced polymer engineering.
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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-Poor
Greases and Oils Good-Fair
Halogenated Hydrocarbons Fair-Poor
Halogens Fair-Poor
Ketones Good-Fair
Electrical Properties
Element Value
Dielectric constant @1MHz 2.2-2.35
Dissipation factor @ 1MHz 1-10x 10⁻⁴
Dielectric strength( kV mm⁻¹ ) 27
Surface resistivity( Ohm/sq ) 10¹³
Volume resistivity( Ohmcm ) 10¹⁵-10¹⁸
Physical Properties
Element Value
Flammability HB
Radiation resistance Fair
Refractive index 1.51
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 17
Water absorption - over 24 hours( % ) 0.015
Density( gcm⁻³ ) 0.92
Mechanical Properties
Element Value
Hardness - Rockwell D41-46 - Shore
Elongation at break( % ) 400
Tensile modulus( GPa ) 0.1-0.3
Izod impact strength( J m⁻¹ ) 1000
Tensile strength( MPa ) May-25
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 50
Heat-deflection temperature - 1.8MPa( C ) 35
Lower working temperature( C ) -60
Upper working temperature( C ) 50-90
Specific heat( J K⁻¹ kg⁻¹ ) 1900-2300
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.33@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 100-200

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