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Grade: Low Density Polyethylene (LDPE)
Composition: LDPE
Form: Coil
Material: Polyethylene (PE)
CAS Number: 9002-88-4
Commodity: Polymers
Coil Width: 600mm
Structure: Biaxially Oriented

Additive Free Polymer LDPE Coil

Additive Free Polymer LDPE Coil is a precision-extruded roll of low-density polyethylene film free from plasticizers, antioxidants, and other conventional polymer additives. With a base purity of ≥99.9%, it offers high flexibility, chemical inertness, and low extractables, making it ideal for ultra-sensitive environments. Its unique non-modified formulation supports biomedical applications, optical substrates, and analytical packaging. Primary industries include food technology, semiconductor cleanrooms, and medical devices. Specific uses involve sterile pouch liners, UV-stable optical component sheathing, and high-purity container membranes. Research applications have included high-voltage electrical insulation without ionic contaminants and dielectric integrity in field-assisted polymer structuring. The absence of additives ensures compatibility with FDA, EU, and ISO clean manufacturing standards, securing its role in future-proof polymer barrier systems and inert encapsulation technologies.
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Tolerances

Coil
Thickness ±20%

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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