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.
作者
高野
张胜
谷晓昱
孙军
李洪飞
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)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
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)。
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
thermoplastic polyurethane elastomer
ionic liquid
layered double hydroxide
flame retardant
processing fluidity
