PBT Coil

PBT Coil, made from polybutylene terephthalate in rolled sheet form, offers high dimensional stability, low moisture absorption, and excellent chemical resistance. Its coiled format facilitates continuous processing and easy integration into automated manufacturing systems. Industries such as automotive, electronics, and consumer goods use PBT coils for insulating barriers, precision-formed components, and durable housings. Specific applications include coil-fed stamping of electrical connectors, continuous production of insulating films for motor windings, and forming of protective casings. In research, PBT coils enable studies on thermoforming performance, wear resistance, and long-term chemical stability. Their combination of mechanical resilience, processing efficiency, and environmental durability makes them valuable in both mass production and specialized engineering environments.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Coil

Thickness		±20%

Material Properties for Polymers

Chemical Resistance

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

Electrical Properties

Element	Value
Dielectric constant @1kHz	3.2
Dissipation factor @ 1kHz	0.002
Dielectric strength( kV mm⁻¹ )	20
Volume resistivity( Ohmcm )	10¹⁵

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Good
Resistance to Ultra-violet	Fair?
Limiting oxygen index( % )	25
Water absorption - over 24 hours( % )	0.1
Density( gcm⁻³ )	1.31

Mechanical Properties

Element	Value
Hardness - Rockwell	M70
Elongation at break( % )	250
Tensile modulus( GPa )	2
Izod impact strength( J m⁻¹ )	60
Tensile strength( MPa )	50

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	150
Heat-deflection temperature - 1.8MPa( C )	60
Upper working temperature( C )	120
Specific heat( J K⁻¹ kg⁻¹ )	1200-2300