PBT Compounds

Polybutylene Terephthalate (PBT) is a thermoplastic crystalline polymer that is mechanically strong, resistant to solvents and exhibits low shrinkage during its formation. PBT can also withstand temperatures up to 150°C (or 200°C when reinforced with glass fibers). It can be made fireproof by adding flame retardants.

Features:

High robustness and strength
Very good size stability
Low water absorption capacity
High resistance to many chemicals
Compounds:
Unreinforced
Glass Fiber Reinforced
Glass Bead Reinforced
Mineral Filled
Lubricated
Surface Modified
Flame Retardant
Impact Resistant
UV Resistant
Heat Resistant
Laser Markable

Chemical and Physical Properties:

It has good stain resistance and mechanical properties.
It offers high rigidity, strength and toughness as well as short-term mechanical properties.
It provides high dimensional stability due to low moisture absorption
Its creep resistance is good
It has resistance to strong chemicals such as diluted acids, alcohols, hydrocarbons, aromatics,
ketones, etc. under thermal stress and severe chemical conditions. It is especially used in automotive under body parts.
High di-electricity and electrical resistance minimizes energy loss
in high frequency electronic applications.
It prevents UV radiation and thermal aging
In addition, the properties of PBT include:
Exceptional weather resistance
Excellent thermal aging behavior

Disadvantages:

High mold shrinkage
Poor resistance to hydrolysis (sensitive to hot water)
Prone to bending due to differential shrinkage
Unreinforced PBT has low notched impact resistance
PBT Alloys
PBT/PC Blends: High toughness up to -40 °C, heat resistance up to 140 °C, improved weatherability,
good UV resistance, high color retention. Food and drug (FDA approved)
compliant.
PBT/ASA: An alloy with improved surface quality, scratch properties and UV resistance.
It offers the advantage of lower specific gravity compared to PBT without additives.
PBT/PET: Improved mechanical properties.

Areas of Use

Electrical and electronic components
Connectors
Sockets
Coils
Low-voltage switch equipment
Lamp fixations
Switches
Automotive
Ignition system parts
Electrical system components
Sensors
Others
Plumbing housing
Handles and bases
Motor housing and insulation