描述
耐低温PBT塑料材料
建筑装饰业
交通运输业、广告业
电气、化工机械、汽车业
耐低温PBT塑料材料
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是一家专业的耐低温pbt塑料材料制造商,您可以从我们工厂以优惠的价格订购高品质的耐低温pbt塑料材料
Low Temperature Resistant PBT Plastic Material
Architecture Decoration Industry
Transportation Industry, Advertisement Industry
Electric & Electrical, Chemical Machinery,
Automobile Industry
Low Temperature Resistant PBT Plastic Material
Product Details
Low temperature resistant PBT plastic material
PBT is a milky white translucent to opaque, crystalline thermoplastic polyester. It has high heat resistance, toughness, fatigue resistance, self-lubricating, low friction coefficient, weather resistance, low water absorption, only 0.1%, and maintains various physical properties (including electrical properties) and electrical insulation in a humid environment. But the volume resistance and dielectric loss are large. It is resistant to hot water, alkalis, acids, oils, but is easily corroded by halogenated hydrocarbons, has poor hydrolysis resistance, can crystallize rapidly at low temperatures, and has good moldability. The disadvantage is that the notched impact strength is low and the molding shrinkage rate is large. Therefore, most of them are reinforced by glass fiber or modified by inorganic filling, and its tensile strength and bending strength can be increased by more than one time, and the thermal deformation temperature is also greatly increased. It can work at 140°C for a long time. After the glass fiber is reinforced, the longitudinal and transverse shrinkage rates of the product are inconsistent, which is easy to cause the product to warp. For materials with glass additives, the shrinkage in the process direction can be reduced, but the shrinkage in the direction perpendicular to the process is basically the same as that of ordinary materials. Generally, the shrinkage rate of materials is between 1.5% and 2.8%. Materials with 30% glass additives shrink between 0.3% and 1.6%. The melting point (225°C) and high-temperature deformation temperature are lower than those of PET materials. The Vicat softening temperature is approximately 170°C. The glass transition temperature (glass trasitio temperature) is between 22°C and 43°C. Due to the high crystallization speed of PBT, its viscosity is very low, and the cycle time of plastic parts processing is generally low.
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