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Formula: PBT
Form: Rod
Material: Polybutylene terephthalate (PBT)
CAS Number: 24968-12-5
Commodity: Polymers
PBT Rods are part of our wide range of engineering plastic rods. PBT or polybutylene terephthalate, to give it its full name, is a semi-crystalline thermoplastic known for its dimensional stability, chemical resistance and electrical insulating properties. With 36 variations available, our PBT Rods come in multiple diameters and lengths to suit a wide range of applications. Example uses include electrical insulators, mechanical parts, and automotive components where heat and chemical resistance are required. Our PBT Rods provides engineers and designers with a versatile, high-performance thermoplastic material.
Tolerances
Rod
| Diameter | +20% / -10% |
|---|
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 |
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