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Formula: PBT
Form: Filament
Material: Polybutylene terephthalate (PBT)
CAS Number: 24968-12-5
Commodity: Polymers
PBT Filament (Polybutylene terephthalate) provides excellent dimensional stability, high stiffness, and strong thermal resistance in a continuous fiber format that can be woven, braided, or extruded for demanding applications. Its low moisture absorption, good chemical resistance, and electrical insulating properties make it highly valuable across automotive, aerospace, and electronics industries. Common applications include wire insulation, high-performance textiles, and precision connectors where heat and wear resistance are critical. Research uses focus on PBT blends reinforced with fibers for lightweight composites, as well as studies on its biodegradability in modified copolymers for sustainable engineering solutions. The filament form offers uniform mechanical performance and consistent processing behavior, enabling both structural and functional integration into advanced systems. This adaptability secures its role as an indispensable thermoplastic material for both industrial production and innovative research developments.
Tolerances
Filament
| Diameter | ±20% | |
|---|---|---|
| Length | +5% / -1% |
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 |
Other Customers Purchased
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PPS Filament PPS filament provides tensile strength, flame retardancy, and chemical resistance for hot‑gas filtration media, conveyor belts, composite reinforcement, and research on high‑temperature fibres, nanofiber membranes, and functional textile surfaces.each
Starting at $170.00
Discounts applied for volume purchases -
PBT Rod PBT rod provides stiffness, dimensional stability, and solvent resistance for machined spacers, bushings, insulating parts, and studies on fatigue, wear, and chemical compatibility.each
Starting at $150.00
Discounts applied for volume purchases -
Silicon Carbide Filament Silicon carbide filament with high stiffness, modulus, and oxidation resistance for advanced composites. Continuous filament enables woven/unidirectional reinforcement in aerospace, defense, and high‑performance automotive structures.each
Starting at $288.00
Discounts applied for volume purchases -
Sapphire Filament Sapphire filament: thermally resistant, strong, and corrosion‑resistant for optoelectronics, magnetometry, and high‑temperature fibers. EFG‑made filaments offer low loss and survive reactive media for sensing/light‑guiding.each
Starting at $376.00
Discounts applied for volume purchases -
Fused Quartz Filament Fused quartz filament with thermal stability, low expansion, and chemical inertness for optical/electronic/thermal uses. Employed in transmissive elements, hermetic seals, and as feedstock for laser‑assisted 3D printing of transparent, heat‑resistant components.each
Starting at $169.00
Discounts applied for volume purchases -
PBT Granules PBT granules offer high crystallinity, chemical resistance, and stable moulding properties for gears, connectors, housings, structural brackets, and composite research feedstocks.each
Starting at $237.00
Discounts applied for volume purchases
