为进一步改善聚丁二酸丁二醇酯(PBS)的力学性能和耐热性能,采用硅烷偶联剂KH550改性微米六方氮化硼(h-BN),对PBS进行共混改性,通过熔融共混与开炼压延工艺制备了具有较高耐热性的h-BN-KH550/PBS复合膜.对h-BN-KH550粒子结构和复合膜的力学性能、聚集态结构、断面形貌、结晶性能及热稳定性进行了测试和表征.结果表明:与PBS相比,h-BN-KH550/PBS复合膜的力学性能得到改善,当KH550与h-BN质量比为2:50、h-BN-KH550与PBS质量比为3:50时,综合力学性能最优;h-BN-KH550粒子可在PBS中均匀分散;在PBS结晶过程中,h-BN-KH550作为成核剂,使PBS的结晶速率加快,结晶度增大;h-BN-KH550/PBS复合膜的热稳定性显著提高,当h-BN-KH550与PBS质量比为3:50时,复合膜热分解过程中质量损失为5%、10%、50%时的温度(T5d、T10d、T50)和热分解峰值温度(Tp)分别提高了30.0、22.6、9.5和10.0℃.
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