文献类型：期刊文献

中文题名：咪唑类离子液体对高填充MH/LLDPE阻燃复合材料界面及流变性能的影响

英文题名：Interfacial and Flow Properties of Imidazolium-Based Ionic Liquid Modified Highly Filled MH/LLDPE Flame Retardant Composites

作者：李如杰[1];徐世爱[1,2]

机构：[1]华东理工大学材料科学与工程学院,上海200237;[2]青海大学化工学院,西宁810016

年份：2026

卷号：39

期号：1

起止页码：24

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：;北大核心:【北大核心2023】；

基金：青海省科技厅应用基础研究项目(2023-ZJ-745);国家自然科学基金(U22A20434)。

语种：中文

中文关键词：离子液体;高填充MH/LLDPE复合材料;流变性能;韧性;阻燃性能

外文关键词：ionic liquid;highly filled MH/LLDPE composite;rheological property;toughness;flame retardancy

摘要：针对高填充聚合物基复合材料流动性差、加工困难和力学性能下降等问题,提出了一种简单且经济的改性策略,即直接添加具有优异流动性的离子液体(IL)。通过两步合成了1-丁基-3-甲基咪唑磷酸盐([BMIM]PA)离子液体,采用熔融共混法制备了一系列不同[BMIM]PA添加量的高填充氢氧化镁(MH)/线形低密度聚乙烯(LLDPE)(MH与LLDPE的质量比为60:40)复合材料。当添加5%([BMIM]PA质量与MH、LLDPE总质量之比)的[BMIM]PA时,MH/[BMIM]PA/LLDPE复合材料的平衡扭矩降低了9.7%,熔体流动指数提高了119%,且在保持复合材料阻燃性能的同时,冲击韧性提高了69%。
To address the challenges of poor flowability,difficult processability,and deteriorated mechanical properties in highly filled polymer composites,a simple and cost-effective modification strategy is proposed by the direct incorporation of an ionic liquid(IL)with excellent flowability.An ionic liquid,1-butyl-3-methylimidazolium phosphate([BMIM]PA),was synthesized by a two-step method.A series of highly filled magnesium hydroxide(MH)/linear low-density polyethylene(LLDPE)composites(with a mass ratio of MH to LLDPE of 60∶40)containing various amounts of[BMIM]PA were then prepared by melt blending.The investigation of their processing,rheological,mechanical and flame retardant properties revealed that the processing properties and impact toughness were significantly improved with the introduction of[BMIM]PA,while maintaining the flame retardant properties of the composites.Notably,when the addition of[BMIM]PA was 5%(mass ratio of[BMIM]PA to MH and LLDPE),the equilibrium torque was reduced by 9.7%,the melt flow index was increased by 119%,and impact toughness was increased by 69%.These improvements are attributed to the enhanced dispersion of[BMIM]PA on MH in the matrix and its good lubricating effect.This study provides a new idea for the application of IL in highly filled polymer composites.