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Grade: Low Density Polyethylene (LDPE)
Formula: LDPE
Form: Tube
Material: Polyethylene (PE)
CAS Number: 9002-88-4
Commodity: Polymers
LDPE Tube is defined by its flexibility, low density, and strong resistance to moisture and chemicals, characteristics derived from the polymer’s branched structure. Its tubular form allows for continuous flow applications, easy integration into piping systems, and adaptability to specialized modifications. Industries such as food processing, medical devices, and construction benefit significantly from LDPE tubes due to their lightweight nature, non-toxicity, and electrical insulation capacity. Specific applications include antibacterial tubing incorporating nano-silver for safe water transport, flame-retardant tubing systems enhanced with synergistic additives such as aluminum hydroxide and chlorinated paraffin, and multilayer flexible tubing designed for transferring oils and fatty foodstuffs. Research highlights innovations in LDPE tube engineering that extend its utility into reactor technology, where tubular systems must endure high pressure and resist degradation under severe conditions. In both industrial and scientific contexts, LDPE Tube remains a highly adaptable polymeric component, essential for safe fluid handling, packaging advancements, and the development of specialized flame-retardant and antibacterial materials.
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Tolerances

Tube
Outside Diameter =<2mm ±10%
Outside Diameter =<5mm ±10%
Outside Diameter >5mm ±10%
Wall 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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