合成材料老化与应用2026，Vol.55Issue(3)：24-28,23,6.
MH/LLDPE复合材料的制备与性能研究
Fabrication and Performance Study of MH/LLDPE Composite Materials
摘要
Abstract
Magnesium hydroxide(MH)/linear low-density polyethylene(LLDPE)composites exhibit drawbacks such as low flame retardant efficiency and poor compatibility,which subsequently lead to reduced processing fluidity and diminished mechanical properties.Moreover,in high-fill-concentration MH/LLDPE composite systems(60 wt％MH),traditional processing additives struggle to achieve the dual objectives of excellent flame retardancy and mechanical performance.To address these challenges,this study adopts a synergistic modification strategy combining three self-developed small-molecule flow modifiers(LC-M,LC-F,and NLC-2F)with commercial polyethylene wax(PEW),specifically targeting high-filled MH/LLDPE systems.The mechanism of LC-F in the composite system was thoroughly investigated using multi dimensional methods including apparent property testing,micromorphology characterization,and mechanical property testing.The results demonstrate that LC-F significantly reduces the agglomeration of MH particles.During melt blending,LC-F effectively decreases frictional resistance interparticles and between MH particles and the LLDPE matrix.In the deformation process,LC-F in the composite can promote the participation of MH particles in deformation,thereby significantly improving the toughness of the composite.In addition,the introduction of LC-F also significantly enhances the flame retardant properties of the composite,with its limiting oxygen index(LOI)increasing from 29.8％to 33.1％.关键词
高填充/复合材料/含氟小分子液晶/液晶性/线性低密度聚乙烯/流动改性剂Key words
high filler loading/composite materials/fluorinated small-molecule liquid crystals/liquid crystallinity/linear low-density polyethylene/flow modifier分类
化学化工引用本文复制引用
谢平,何奕汛,刘述梅,林绍泽,汤家俊,刘羽玲,刘显勇,王忠强,杨佳茜..MH/LLDPE复合材料的制备与性能研究[J].合成材料老化与应用,2026,55(3):24-28,23,6.基金项目
东莞市重大科技项目库入库项目(项目编号:303163825026、401190606015). （项目编号:303163825026、401190606015）
