首页> 美国卫生研究院文献>Nanomaterials >Comparative Studies on Thermal Mechanical and Flame Retardant Properties of PBT Nanocomposites via Different Oxidation State Phosphorus-Containing Agents Modified Amino-CNTs
【2h】

Comparative Studies on Thermal Mechanical and Flame Retardant Properties of PBT Nanocomposites via Different Oxidation State Phosphorus-Containing Agents Modified Amino-CNTs

机译:通过不同氧化态含磷剂修饰的氨基碳纳米管对PBT纳米复合材料的热机械和阻燃性能的比较研究

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

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(Ox)-A-CNTs (x = 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(Ox)-A-CNT nanoadditives were homogeneously distributed within PBT matrix compared to A-CNT. The incorporation of DPP(Ox)-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.
机译:考虑到含磷剂和氨基碳纳米管(A-CNT),已经开发出高性能的聚对苯二甲酸1,4-丁二醇酯(PBT)纳米复合材料。通过一锅法官能化方法,通过A-CNT与不同氧化态的含磷试剂(包括氯二苯基膦(DPP-Cl),二苯基膦酰氯(DPP(O)-Cl)和二苯基磷酰基)之间的反应来制备官能化的CNT。氯化物(DPP(O3)-Cl)。将这些功能化的CNT,DPP(Ox)-A-CNT(x = 0、1、3)分别与PBT混合,通过熔融共混法获得CNT基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(Ox)-A-CNT纳米添加剂均匀分布在PBT基质中。 DPP(Ox)-A-CNT的引入改善了PBT的热稳定性。此外,由于DPP(O3)-A-CNT与PBT之间的优异分散和界面相互作用,PBT / DPP(O3)-A-CNT显示出最高的结晶温度和拉伸强度。由于出色的碳化作用,PBT / DPP(O)-A-CNT表现出最好的阻燃性。由分解的聚合物产生的自由基被DPP(O)-A-CNT有效捕获,从而导致在锥形量热仪测试中热量释放速率,烟雾产生速率,二氧化碳和一氧化碳释放量降低。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号