摘要：本文以固化剂聚醚胺（D230）为芯材，聚甲基丙烯酸甲酯（PMMA）为壳材，采用溶剂挥发法制备了包裹胺类固化剂的微胶囊，并研究了芯-壳质量比、表面活性剂类型、搅拌速度、温度、稳定剂浓度等不同因素对微胶囊平均粒径和芯材含量的影响。同时，采用傅里叶变换红外（FTIR）、光学显微镜、差示扫描量热法（DSC）和热重分析（TGA）等对微胶囊的化学结构、形貌及热力学性能进行了表征。实验结果表明：当芯-壳质量比为2:1~4:1、采用复合型表面活性剂、温度为40°C、搅拌速度为1000rpm、稳定剂浓度为2wt%时，制备的微胶囊较理想。将该微胶囊加入环氧树脂中可制得外援型自修复环氧材料。随着微胶囊添加量的增加，损伤样品膜表面的裂纹自修复效果逐渐明显。当添加量为10wt%时，复合材料具有较好的自修复性能。关键词：微胶囊；固化剂；环氧树脂；聚甲基丙烯酸甲酯；自修复中图分类号：O631.5文献标志码：A文章编号：2096-854X（2022）06－0052-08PreparationandCharacterizationofPolymethylMethacrylateMicrocapsulesContainingAmineCuringAgentsYuSimin1，2，ZhongJiang1，2，*，ShenLiang1，2，*（1.DepartmentofCoatingsandPolymericMaterials,SchoolofChemicalEngineering,JiangxiScienceandTechnologyNormalUniversity,Nanchang33013,Jiangxi,P.R.China;2.JiangxiEngineeringLaboratoryofWaterborneCoating,Nanchang330013,Jiangxi,P.R.China）Abstract:Inthispaper,aseriesofmicrocapsulescontainingaminecuringagentswaspreparedbythesolventvolatilizationmethodwithpolyetheramine（D230）ascorematerialandpolymethylmethacrylate（PMMA）asshellmaterial.Theinfluenceofdifferentfactors,suchasthecoreshellmassratio,thetypesofsurfactant,stirringspeed,temperature,andconcentrationofstabilizers,ontheaverageparticlesizeandcorematerialcontentofthemicrocapsuleswassystematicallystudied.Meanwhile,Fouriertransforminfrared（FTIR）,opticalmicroscopy,differentialscanningcalorimetry（DSC）,dynamicmechanicalanalysis（DMA）andthermogravimetricanalysis（TGA）werealsousedtocharacterizethechemicalstructure,morphologyandthermodynamicpropertiesofthemicrocapsules.Theexperimentalresultsshowthatwhenthecore-shellmassratiowas2:1-4:1,theoptimalmicrocapsulescouldbeobtainedwiththeemploymentofcompoundsurfactantat...
