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PBT
Overview
Polybuthylene terephthalate is a crystalline resin that offers excellent heat resistance, chemical resistance and electrical properties of all engineering plastics. Crystallization is rapid. Therefore, cycle times are short without losing the benefit of weather resistance, friction resistance, wear resistance, dimensional stability and heat aging resistance. PBT is known for its great physical property balance and economical benefits. Importantly, properties are greatly enhanced when glass fiber or mineral filler are added to PBT. It can easily be made to have flame resistant character as well. PBT is widely used in TV parts and such electrical parts as connectors, relays and switches. In addition, water absorption is low, and PBT is a highly reliable material for precision parts and automotive parts even after extended periods of use.
Features
starex PBT is a crystalline resin, so cycle time is very short while productivity is high. It is used in many products that are reinforced with glass fiber or other mineral filler. When reinforced with 30% glass fiber, the heat distortion temperature improves from 70กษ to 210กษ, and mechanical properties are enhanced about three times, making it well suited for use in functional parts. In addition, PBT offers far superior mechanical properties than other engineering plastics. Although water absorption rate is low, there may be a possibility of water decomposition compromising physical properties during injection molding. Therefore, water content must be kept no higher than 0.02% prior to the injection molding process.
Type & Application
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Class
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Grades
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Characteristics
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Typical
Application |
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Non-reinforced, General |
GP-5000 |
High
flowability release, Hinged strength |
Connector, Switches, Harness |
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Non-reinforced flame retardant |
VB-5000 |
Flame retardant,
Mold release |
Connector, Switches, Relay |
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Reinforced, General |
GP-5150G |
GF
15% & 30% rigidity, Flowability |
Connectors, Switches |
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GP-5300G |
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Reinforced, Flame retardant |
VB-5150G |
GF 15% & 30%,
Flame retardant, Flowability,
High
rigidity, Electrical resistance, Hydrolysis resistance
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Connectors, Relays, Switches, TV parts, Photocopier
parts |
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VB-5100G |
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| © 2010 SAMSUNG CHEMICAL (USA), INC. |
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