Unplasticized PVC Tube

Unplasticized PVC Tube combines rigidity, chemical resistance, and electrical insulation in a hollow cylindrical form, widely used in industrial, laboratory, and construction contexts. Its unmodified formulation ensures high dimensional stability, resistance to hydrocarbon solvents, and excellent flame retardancy. Industries including construction, chemical processing, and water treatment use unplasticized PVC tubes for pipework, conduit systems, and corrosion-resistant liners. Specific applications include dielectric tubing in electrical installations, chemically inert piping in labs, and prototype fluid-handling systems. In research, unplasticized PVC tubes are studied for their fracture mechanics, solvent compatibility, and thermal degradation pathways. Their combination of structural integrity, corrosion resistance, and cost-effectiveness ensures they remain a core polymer solution in engineering, laboratory, and construction technologies.

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Tolerance

Properties

Reference & Citations

each

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

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.7-3.1
Dissipation factor @ 1kHz	0.025
Dielectric strength( kV mm⁻¹ )	14
Volume resistivity( Ohmcm )	10¹⁶

Physical Properties

Element	Value
Flammability	V0
Radiation resistance	Fair
Refractive index	1.54
Resistance to Ultra-violet	Good
Limiting oxygen index( % )	42
Water absorption - over 24 hours( % )	0.03-0.4
Density( gcm⁻³ )	1.4

Mechanical Properties

Element	Value
Hardness - Rockwell	R106-120
Elongation at break( % )	60
Tensile modulus( GPa )	2.5-4
Izod impact strength( J m⁻¹ )	20-1000
Tensile strength( MPa )	25-70

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	70
Heat-deflection temperature - 1.8MPa( C )	67
Lower working temperature( C )	-30
Upper working temperature( C )	50-75
Specific heat( J K⁻¹ kg⁻¹ )	1000-1500
Thermal conductivity( W m⁻¹ K⁻¹ )	0.12-0.25@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	75-100