描述
PBT的物理性能
建筑装饰业
交通运输业、广告业
电气、化工机械、汽车业
PBT的物理性质
PBT的物理性能PBT是最新和发展最快的通用工程塑料品种。虽然直到20世纪70年代才工业化，但它具有优异的综合性能、良好的成型加工性能和优异的性价比。热门市场。PBT的物理性能，PBT具有高耐热性、韧性、耐疲劳性、自润滑性、低摩擦系数、耐候性、低吸水性，并在潮湿环境中保持各种物理性能（包括电气性能）和电气绝缘性。低温结晶迅速，可塑性好。然而，PBT具有较大的体积电阻和介电损耗，耐热水、碱、酸、油，但易受卤代烃腐蚀，耐水解性差，缺口冲击强度低，模具收缩大。因此，它们大多采用玻璃纤维增强或无机填料改性，其拉伸强度和弯曲强度可提高-倍以上，热变形温度也大大提高，在140°C下可长时间工作。然而，玻璃纤维增强产品的纵向和横向收缩率并不均匀，这很容易导致产品变形
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Physical Properties Of PBT
Architecture Decoration Industry
Transportation Industry, Advertisement Industry
Electric & Electrical, Chemical Machinery,
Automobile Industry
Physical Properties Of PBT
Product Details
Physical properties of PBT
PBT is the latest and fastest-growing variety of general engineering plastics. Although it was not industrialized until the 1970s, it has excellent comprehensive properties, good molding processability and excellent performance/price ratio. Hot market. The physical properties of PBT, PBT has high heat resistance, toughness, fatigue resistance, self-lubricating, low friction coefficient, weather resistance, low water absorption, and maintains various physical properties (including electrical properties) and electrical insulation in a humid environment. It can crystallize rapidly at low temperature and has good moldability. However, PBT has large volume resistance and dielectric loss, heat-resistant water, alkalis, acids, oils, but is susceptible to corrosion by halogenated hydrocarbons, has poor hydrolysis resistance, low notched impact strength, and large mold shrinkage. 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–times, and the heat distortion temperature is also greatly increased, and it can work for a long time at 140 °C. However, the longitudinal and transverse shrinkage rates of the glass fiber reinforced products are not uniform, which is easy to cause the products to warp.
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