Zhu San-E, Wang Li-Li, Chen Hao, Yang Wei, Yuen Anthony Chun-Yin, Chen Timothy Bo-Yuan, Luo Cheng, Bi Wen-Mei, Hu En-Zhu, Zhang Jian, Si Jing-Yu, Lu Hong-Dian, Hu Kun-Hong, Chan Qing Nian, Yeoh Guan Heng
Department of Chemical and Materials Engineering, Hefei University, 99 Jinxiu Avenue, Hefei 230601, China.
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney NSW 2052, Australia.
Nanomaterials (Basel). 2018 Jan 26;8(2):70. doi: 10.3390/nano8020070.
High-performance poly(1,4-butylene terephthalate) (PBT) nanocomposites have been developed via the consideration of phosphorus-containing agents and amino-carbon nanotube (A-CNT). One-pot functionalization method has been adopted to prepare functionalized CNTs via the reaction between A-CNT and different oxidation state phosphorus-containing agents, including chlorodiphenylphosphine (DPP-Cl), diphenylphosphinic chloride (DPP(O)-Cl), and diphenyl phosphoryl chloride (DPP(O₃)-Cl). These functionalized CNTs, DPP(O)-A-CNTs ( = 0, 1, 3), were, respectively, mixed with PBT to obtain the CNT-based polymer nanocomposites through a melt blending method. Scanning electron microscope observations demonstrated that DPP(O)-A-CNT nanoadditives were homogeneously distributed within PBT matrix compared to A-CNT. The incorporation of DPP(O)-A-CNT improved the thermal stability of PBT. Moreover, PBT/DPP(O₃)-A-CNT showed the highest crystallization temperature and tensile strength, due to the superior dispersion and interfacial interactions between DPP(O₃)-A-CNT and PBT. PBT/DPP(O)-A-CNT exhibited the best flame retardancy resulting from the excellent carbonization effect. The radicals generated from decomposed polymer were effectively trapped by DPP(O)-A-CNT, leading to the reduction of heat release rate, smoke production rate, carbon dioxide and carbon monoxide release during cone calorimeter tests.
通过考虑含磷试剂和氨基碳纳米管（A-CNT），已开发出高性能聚对苯二甲酸丁二醇酯（PBT）纳米复合材料。采用一锅法功能化方法，通过A-CNT与不同氧化态的含磷试剂（包括二苯基氯化膦（DPP-Cl）、二苯基次膦酰氯（DPP(O)-Cl）和二苯基磷酰氯（DPP(O₃)-Cl））之间的反应制备功能化碳纳米管。这些功能化碳纳米管，即DPP(O)-A-CNTs（= 0, 1, 3），分别与PBT混合，通过熔融共混法获得基于碳纳米管的聚合物纳米复合材料。扫描电子显微镜观察表明，与A-CNT相比，DPP(O)-A-CNT纳米添加剂均匀分布在PBT基体中。DPP(O)-A-CNT的加入提高了PBT的热稳定性。此外，PBT/DPP(O₃)-A-CNT表现出最高的结晶温度和拉伸强度，这归因于DPP(O₃)-A-CNT与PBT之间优异的分散性和界面相互作用。PBT/DPP(O)-A-CNT由于出色的碳化效果而表现出最佳的阻燃性。在锥形量热仪测试中，由聚合物分解产生的自由基被DPP(O)-A-CNT有效捕获，导致热释放速率、烟雾产生速率、二氧化碳和一氧化碳释放量降低。
