高刚性PBT B4300G2|德国巴斯夫玻纤10%增强级

高刚性PBT B4300G2|德国巴斯夫玻纤10%增强级

台湾长春PBT 3030

PBT是最坚韧的工程热塑材料之一，它是半结晶材料，有非常好的化学稳定性、机械强度、电绝缘特性和热稳定性。这些材料在很广的环境条件下都有很好的稳定性。PBT吸湿特性很弱。非增强型PBT的张力强度为50MPa，玻璃添加剂型的PBT张力强度为170MPa。玻璃添加剂过多将导致材料变脆。PBT的结晶很迅速，这将导致因冷却不均匀而造成弯曲变形。对于有玻璃添加剂类型的材料，流程方向的收缩率可以减小，但与流程垂直方向的收缩率基本上和普通材料没有区别。一般材料收缩率在1.5%~2.8%之间。含30%玻璃添加剂的材料收缩0.3%~1.6%之间。熔点（225℃）和高温变形温度都比PET材料要低。维卡软化温度大约为170℃。玻璃化转换温度（glass trasitio temperature）在22℃到43℃之间。由于PBT的结晶速度很高，因此它的粘性很低，塑件加工的周期时间一般也较低。

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Hua Yun Plastic Company plastic news: In August 2019, Koth was actively involved in the "future residential building energy and Environment Experimental Platform" project initiated by the China Academy of Building Sciences, and Join Hands with industry partners Zhejiang Deelong Technology Co. , Ltd. and German Green House group, to build custom Baiduo for this project? Solution of glass fiber reinforced polyurethane energy-saving refractory window. The profile is made of alkali-free glass fiber yarn as reinforcing material, polyurethane resin as matrix resin, and molded by closed-die injection-pultrusion process, which is energy-saving, fire-resistant and high strength.