原位聚合法制备脲醛树脂微胶囊

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1、哈尔滨工程大学本科生毕业论文摘要本文采用原位聚合法制备了脲醛树脂微胶囊，并深入研究了脲醛预聚体制备条件以及预聚体缩聚条件对脲醛树脂微胶囊形成的影响。实验结果表明，脲醛预聚体的制备条件以及预聚体缩聚过程中的酸性催化剂、酸化时间、缩聚温度、缩聚时间、固化剂及其用量、固化温度对脲醛树脂微胶囊的形成有很大的影响，通过对这些条件进行控制我们制备出了内外表面光滑、形态完整、无粘连分散性好、坚固透明具有很好光学形态的脲醛树脂微胶囊，为制备用做电子纸电泳微室的电泳微胶囊打下了基础。本文进一步开展了蓝色电泳微胶囊的制备研究，主要通过原位聚合法，以二氧化钛分散在油性蓝染色的四氯乙烯中作为复合芯材制备出了具有很

2、好形态和抗渗透性能的蓝色电泳微胶囊。实验结果表明，通过对反应条件进行精细的控制能够解决制备复合芯材微胶囊所存在的相分离等难题，制备出了满足要求的蓝色电泳微胶囊。研究结果表明，原位聚合法制备脲醛树脂微胶囊方法简单、工艺易控制、设备简单,适合于制备电泳微胶囊。实验制得的电泳微胶囊具有很好的形态,有望应用于电子纸的制备。关键词：电泳微胶囊；原位聚合；脲醛树脂哈尔滨工程大学本科生毕业论文ABSTRACTInthispaperthemethodofpreparingUFresinmicrocapsulesviain-situinterfacialpolymerizationarereported.W

3、eemphasisontheeffectsofsynthesisconditionsforUFprepolymerandpolymerizationconditionsofprepolymeronformingofUFresinmicrocapsules.ItwasdiscoveredthattheformingofUFresinmicrocapsuleswasthefunctionofvariousconditions,suchassynthesisconditionsforUFprepolymer,acidiccatalyzer,acidificationtime,polymeriza

4、tiontemperature,polymerizationtime,condensateanditsdosageandsolidifytemperature.TheUFresinmicrocapsulespreparedwithsuchconditionshadmanymerits,suchassmoothinnerandoutersurface,completemorphology,gooddispersityandtransparence,etc.Thiswillprovideagoodfoundationforthepreparationofelectrophoreticmicro

5、capsules.Inaddition,thepreparationofblueelectrophoreticmicrocapsulesareresearched.Electrophoreticmicrocapsuleswithgoodmorphologyandresistancnetopenetrabilitywerepreparedviain-situinterfacialpolymerizationusingoilblueandTiO2nanoparticlesdispersedintetrachloroethyleneascorematerials.Experimentsshows

6、thatweareabletopreparedesiredelectrophoreticmicrocapsulesbycontrollingreactionconditions.Experimentsshowsthatthemethodofin-situinterfacialpolymerizationforpreparationofUFresinmicrocapsuleshadmanymerits,suchassimplemethod,ordinaryfacilityandmaneuverablearts,etc.Itiswellforthesynthesizeoftheelectrop

7、horeticmicrocapsules.Electrophoreticmicrocapsulespreparedbyushadgoodmorphologyanddesiredperformance.Thiswillprovideagoodfoundationforthepreparationofelectronicpaper.KeyWord:electrophoreticmicrocapsules；in-situpol