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

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中图分类号：TB324 文献标志码：A

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

LI Rujiel， XU Shiai

（1.SchoolofMaterialsScienceandEnginering，EastChinaUniversityofSienceandTechnologyhanghai2O037Cina; 2.School of Chemical Engineering， Qinghai University， Xining 810016， China）

Abstract：Toaddress thechallengesofpoorflowabilitydiicult procesabilityanddeterioratedmechanicalproprtiein highlyfilled polymercomposites，asimpleandcost-efective modificationstrategyisproposedbythedirectincoporationof an ionic liquid （IL）with excellent flowability.An ionic liquid，1-butyl-3-methylimidazolium phosphate （BMM]PA）， was synthesized bya 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 preparedby melt blending.The investigation of their procesing，rheological， mechanical and flameretardant properties revealed that theprocessng properties and impact toughness were significantly improved with the introductionof [BMIM]PA， while maintaining theflame retardant properties of the composites.Notably，when the aditionof[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]PAonMHinthematrixanditsgood lubricating effect.Thisstudyprovidesanewidea for the application of IL in highly filled polymer composites.

Keywords： ionic liquid;highly filled MH/LLDPEcomposite；rheological property；toughness；flame retardancy

将聚合物和无机填料共混仍然是制备新型复合材料最有效和最具有经济效益的途径之一[I-3]。（剩余15853字）