The automotive industry uses PBT extensively for components such as:

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Main characteristics and properties of PBT
Physical properties of PBT
Physical property Details
Density Its density of 1.31 g.cm-3 contributes to its strength and durability.
Limiting oxygen index A limiting oxygen index of 25%, indicating its flammability characteristics.
UV blocking Provides good UV resistance, which improves outdoor durability.
Chemical properties of PBT
Chemical Resistance
Alcohols It has high resistance to alcohols, making it suitable for various applications.
Aromatic hydrocarbons Good resistance, ensuring durability in environments containing aromatic hydrocarbons.
Fats and oils Excellent resistance to greases and oils, ideal for automotive and industrial applications.
Alkalis Moderate resistance to alkalis, requiring special attention in alkaline environments.
Ketones High resistance to ketones, which enhances its usefulness in chemical processing and handling.
Diluted acids Retains integrity when exposed to dilute acids, suitable for various chemical applications.
Solvents High resistance to various solvents, hong kong data ensuring durability and performance in solvent-rich environments.
Moisture absorption Low water absorption rate of 0.1% over 24 hours, ensuring dimensional stability.
Electrical properties of PBT
Electrical property Details
Dielectric strength High dielectric strength of 20 kV.mm-1, ensuring effective insulation of electrical components.
Dielectric constant at 1 kHz A dielectric constant of 3.2, indicating effective electrical insulation properties.
Dissipation factor at 1 kHz Low dissipation factor of 0.002, ensuring minimal energy loss in electrical applications.
Volume resistivity Extremely high volume resistivity of 10^15 Ohm.cm, making it an excellent electrical insulator.
Mechanical properties of PBT
Mechanical property Details
Stress resistance High stress resistance, making it suitable for applications requiring mechanical strength.
Machining and transformation Excellent machining and processing capabilities, facilitating manufacturing and shaping.
Short-term mechanical properties Nine distinct short-term properties including high strength, toughness and stiffness.
Creep resistance Exceptional creep resistance, shape retention under prolonged stress.
Dimensional stability Exceptional stability, ensuring parts remain accurate and functional over time.
Thermal properties of PBT
Thermal property Details
Thermal deformation temperature - 1.8 MPa Can withstand temperatures up to 60°C under load.
Thermal deformation temperature - 0.45 MPa Withstands temperatures up to 150°C under low load conditions.
Higher working temperature Works effectively up to 120°C and possibly higher for short term exposure.
Thermal aging behavior Maintains performance with good heat aging properties.
Flame resistance Available in a fire retardant version for added safety.
Applications of PBT plastic
Automotive industry