毕业设计（论文）题目：致密性聚氨酯微胶囊相变材料的制备学院：纺织与材料学院专业班级：轻化工程11级（3）班指导教师：职称：讲师学生姓名：学号：摘要相变储能技术能够显著提高能源利用率,有效缓解能源紧缺问题。而相变储能技术大规模应用的困难在于相变材料容易泄漏,需要对其进行封装。目前,得到国内外广泛关注、具有较高实用价值的封装技术是微胶囊化技术。本文立足于此，以硬脂酸丁酯为芯材,苯乙烯马来酸酐共聚物(SMA)为乳化分散剂,采用界面聚合制备微胶囊相变材料,其壁材分为两种：一种是甲苯-2,4-二异氰酸酯(TDI)和聚醚多元醇反应形成的,一种是脂肪族异氰酸酯（IPDI）与聚醚多元醇反应形成的聚氨酯壳层。研究了合成过程中乳化转速、乳化时间、反应温度、反应时间、芯材与壁材用量等因素对微胶囊表面形貌及各项性能的影响。采用差示扫描量热仪(DSC)、热重分析仪(TGA)、扫描电镜(SEM)、光学显微镜等分别对微胶囊的热性能、表面形态做了研究和分析。结果表明,所制备微胶囊的致密性和耐热稳定性均比单层微胶囊有很大程度的提高。关键词：微胶囊，聚氨酯，相变材料，界面聚合，硬脂酸丁酯AbstractTheenergystoragetechnologycanimprovetheenergyutilizationrate,effectivelyalleviatetheshortageofenergy.Thedifficultyoflargescaleapplicationofphasechangeenergystoragetechnologyisthatphasechangematerialsareeasytoleakandneedtobeencapsulated..Atpresent,theencapsulationtechnologywhichiswidelyconcernedathomeandabroad,andhasthehighpracticalvalueisthemicroencapsulationtechnology.Basedonthe,withn-Butylstearateascorematerial,styrenemaleicanhydridecopolymer(SMA)foremulsiondispersant,byinterfacialpolymerizationpreparationofmicroencapsulatedphasechangematerial,thewallmaterialisdividedintotwo:oneistoluene2,diphenylmethanediisocyanate(TDI)andpolyetherpolyolbeformed.Anotheristheformationofaliphaticdiisocyanate(IPDI)andpolyetherpolyolreactionofpolyurethaneshell.Theeffectsofemulsifyingspeed,emulsifyingtime,reactiontemperature,reactiontemperature,reactiontime,theamountofcorematerialandwallmaterialonthesurfacemorphologyandpropertiesofmicrocapsuleswerestudied.Thethermalpropertiesandsurfacemorphologyofmicrocapsuleswerestudiedbydifferentialscanningcalorimetry(DSC),thermogravimetricanalyzer(TGA),scanningelectronmicroscopy(SEM)andopticalmicroscope..Theresultsshowedthatthecompactnessandheatresistanceofthemicrocapsuleswereimprovedcomparedwiththesinglemicrocapsule.Keyword:microcapsules，Polyurethane,phasechangematerials,interfacialpolymerization,n-butylstearate目录TOC\o"1-3"\h\uHYPERLINK\l"_Toc8672"第一章概述PAGEREF_Toc86726HYPERLINK\l"_Toc2965"1.1相变材料P