磷钼酸基离子液体和水滑石对膨胀阻燃热塑性聚氨酯弹性体复合材料性能的影响  

Influence of phosphomolybdic acid-based ionic liquid and layered double hydroxide on the properties of intumescent flame-retardant thermoplastic polyurethane elastomer composites

作　　者：高野 张胜 谷晓昱[1,2] 孙军 李洪飞[1,2] GAO Ye;ZHANG Sheng;GU Xiaoyu;SUN Jun;LI Hongfei(Beijing Key Laboratory of Advanced Functional Polymer Composites,Beijing University of Chemical Technology,Beijing 100029,China;Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学先进功能高分子复合材料北京市重点实验室,北京100029 [2]北京化工大学碳纤维及功能高分子教育部重点实验室,北京100029

出　　处：《复合材料学报》2022年第2期568-576,共9页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51803007)。

摘　　要：采用离子交换的方法合成了磷钼酸基离子液体(PMAIL),并与水滑石(LDH)复配,添加到膨胀阻燃热塑性聚氨酯弹性体(IFR/TPU)复合材料中,研究了PMAIL和LDH对IFR/TPU复合材料阻燃性能、热稳定性和加工流动性的影响。结果表明,PMAIL和LDH复配使用提高了IFR/TPU复合材料的阻燃性能和热稳定性;当PMAIL、LDH和IFR的质量比为0.2∶1.0∶8.8且总添加量为10wt%时,PMAIL-LDH-IFR/TPU复合材料的极限氧指数为30.1%,垂直燃烧测试达到UL-94 V-0级,热释放速率峰值和总热释放量与纯TPU相比分别下降88.06%和45.88%;平衡扭矩、熔融指数和熔融温度等数据变化表明,PMAIL-LDH-IFR/TPU复合材料具有良好的加工流动性。The phosphomolybdic acid-based ionic liquid(PMAIL) was synthesized by ion-exchange method, and it was compounded to the intumescent flame-retardant thermoplastic polyurethane elastomer(IFR/TPU) composites together with layered double hydroxide(LDH). The effect of PMAIL and LDH on the flame retardant properties, thermal stability and processing fluidity of IFR/TPU composites was investigated. The results show that the combination of PMAIL and LDH improve the flame retardancy and thermal stability of IFR/TPU composites. When the mass ratio of PMAIL, LDH and IFR is 0.2∶1.0∶8.8 and the total addition amount is 10 wt%, the limiting oxygen index of the PMAIL-LDH-IFR/TPU composites is increased to 30.1% and the vertical burning test reach UL-94 V-0 rating. Moreover, the peak heat release rate and total heat release of PMAIL-LDH-IFR/TPU sample are reduced by88.06% and 45.88% respectively compared with that of control TPU. The changes in the results such as the balanced torque, melt index and melting temperature indicate the improvement of processing fluidity for PMAIL-LDHIFR/TPU composites.

关 键 词：热塑性聚氨酯弹性体 离子液体 水滑石 阻燃 加工流动性 

分 类 号：TB332[一般工业技术—材料科学与工程]