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Grade: Low Density Polyethylene (LDPE)
Formula: LDPE
Form: Rod
Material: Polyethylene (PE)
CAS Number: 9002-88-4
Commodity: Polymers
LDPE Rod is characterized by its low density, flexibility, and toughness, properties arising from its long-chain branched structure. Its cylindrical form ensures stability, machinability, and consistent performance across mechanical and insulating applications. Industries such as packaging, medical devices, and polymer composites benefit from LDPE rods due to their chemical resistance, ease of processing, and non-toxic profile. Specific applications include use in sterilizable medical containers fabricated from high-pressure LDPE, reinforcement in polymer composites where rods provide structural integrity, and integration into shrink film blends that enhance optical clarity, tensile strength, and flexibility. Research demonstrates that LDPE’s unique rheological behavior and its adaptability to high-pressure polymerization processes enable it to be tailored for diverse applications, ranging from medical-grade materials to UV-stable, mechanically reinforced composites. In both industrial and scientific contexts, LDPE Rod represents a versatile and reliable polymer form that underpins innovation in sustainable packaging, medical technology, and high-performance polymer engineering.
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Tolerances

Rod
Diameter +20% / -10%

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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