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以聚对苯二甲酸丁二醇酯(PBT)为基材,二乙基次膦酸铝(AlPi)以及三聚氰胺次膦酸盐(MPP)为阻燃剂、导电炭黑(CB)为抗静电剂,通过密炼熔融共混得到PBT/AIPi/MPP/CB阻燃抗静电复合材料。通过差示扫描量热分析(DSC),动态力学分析(DMA)和动态流变分析考察了阻燃抗静电PBT/AIPi/MPP/CB复合材料的熔融结晶性能,动态力学性能和动态流变性能。结果表明:阻燃剂和CB都会使复合材料提前结晶,结晶度提高;阻燃剂的添加使PBT的玻璃化转变温度升高,CB的加入会降低材料的内耗峰,阻燃剂和CB超过一定用量会使材料的储能模量降低;PBT/AIPi/MPP/CB复合材料的储能模量对剪切频率的依赖性不明显,而其复数黏度呈现强烈的剪切频率依赖性。
Using polybutylene terephthalate (PBT) as substrate, aluminum diethylphosphinate (AlPi) and melamine phosphinate (MPP) as flame retardants, the conductive carbon black (CB) Agent, melt blending through the mixture obtained PBT / AIPi / MPP / CB flame retardant antistatic composite material. The melt crystallization, dynamic mechanical properties and dynamic rheological properties of flame-retardant antistatic PBT / AIPi / MPP / CB composites were investigated by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and dynamic rheological analysis . The results show that both flame retardant and CB make the composite crystallize prematurely and the crystallinity increases. The addition of flame retardant increases the glass transition temperature of PBT. The addition of CB will reduce the internal friction peak and the flame retardants and CB exceed The storage modulus of PBT / AIPi / MPP / CB composites is not dependent on the shear frequency and the complex viscosity exhibits a strong shear frequency dependence.