資源描述：
《微膠囊相變材料的制備》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、南京工業(yè)大學(xué)碩士學(xué)位論文微膠囊相變材料的制備姓名：尚紅波申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：徐玲玲20060601囊化后，作為穩(wěn)定的相變材料，具有良好的應(yīng)用前景。關(guān)鍵詞：相變材料微膠囊硬脂酸丁酯十二醇建筑節(jié)能IIABSTRACTHowtopackagesolid/liquidPhaseChangeMaterialisthekeyfactorforitscommercialapplication.Themicro-encapsulationtechnology,includingthecoreand
2、theshellmaterials，differentsignificantsynthesizeprocess,variouscharacterizationmethodsarestudiedinthisthesis.Themicroencapsulatedphasechangematerialswerepreparedusingdodecanolasthecore,urea-formaldehyderesinastheshell,andSMA(styrene-maleicanhydride)resi
3、nasthesurfactantbyin-situpo1ymerization.Theinfluenceofmolecular-weightofSMAresinonmicroencapsulatedtechnologywerethatmolecular-weightof40,000wasofbesteffect.DifferentpropertiesofthemicroencapsulatedphasechangematerialswerecharacterizedbyFT-IR,DSC,LaserP
4、articleSizeAnalyzer,OMandSEM.Whentheshellwasurea-formaldehyderesincombinewithmelmac,theyieldofMPCMincreasedfrom50percenttoabove90percent.Withtheshellofpolyurearesinandthecoreofbutylstearate,microencapsulatedphasechangematerialswerepreparedbyinterfacialp
5、olymerizationforthermalenergystorageapplication.Differentkindsofsurfactants,suchaspolyoxyethyleneoctylphenyl-10(OP-10)andsodiumalginate,anditsdosagewereinvestigatedinordertocleartheemulsifyeffect.WhenthesurfactantisOP-10,0.5gram,itwillbethebesteffecttom
6、icroencapsulation.ThegrainsizeofMPCMisequalityanditsdistributionisnarrow.OpticalmicrophotographandSEMphotographofmicrocapsulesappearhomogeneousparticles.TheresultsofDSCshowedthatthemeltingpointandheatoffusionofmicroencapsulatedbutylstearatewas29.37℃and8
7、5.92kJ/kgwhenthem(core)vs.m(shell)equaled3:1.Theheatcapabilitywasthebestthanotherm(core)vs.m(shell).Theycanremainconstantaftersuffering400cooling-heatingcycles.Theeffectofdifferentdosageofthesurfactantwasanalyzedbythedryweightofmicrocapsule.Thepenetrabi
8、lityofthemicrocapsulewascharacterizedwellinwater,tolueneandethanolby721spectrophometer.Polyurethanemicrocapsulescontainingphasechangematerialswerepreparedbyinterfacialpolymerizationinanemulsionsystem.Toluene-2,4-diisocyanate(TDI)
