水性聚氨酯改性丙烯酸酯共聚物復(fù)合乳液的合成及性能研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文水性聚氨酯改性丙烯酸酯共聚物復(fù)合乳液的合成及性能研究姓名：蔣顏平申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：王藝峰20090501武漢理丁大學(xué)碩十學(xué)位論文AbstractRecently’waterbornecoatingshavebeenwidelyresearchedandattendedwiththeincreasedpeople’Sawarenessontheenvironmentpollutionprobl

2、emandtheenergycrisisAcryliccopolymerlatexes(PA)andwaterbornepolyurethane(Pu)havebeenwidelyusedasthefilmformingmaterialsofwaterbomecoatings，andbothofthemhavetheirowncharacteristicadvantagesanddisadvantagesCombinationofPUw

3、ithPAisexpectedtobeaneffectivemethodtoincreasethepropertiesoftheresultingmatedalsThereforethestudiesonPUmodifiedPAcopolymerlatexes(PUA)havebeenchieflystudiedinthisworkInaddition，PUAmodifiedbyepoxyresin(Enwhichhavediffere

4、ntcore—shellstructures，areobtainedbyusinganewepoxyfunctionalmonomerwhichcontainsdoublebondsItisworthysaidthat，thecoreshellstructurewhichiSPUinshellandPAincorehavebeenscarcelyreportedbeforeInthisPaperPAlatexesarepreparedb

5、ythemethodof“particlestructuredesigning”TheeffectssuchastheamountofthefunctionalmonomerDAAM，COmonomerAN，theinitiatorAPS，andtheseedemulsion，themassratioofhardandsoftmonomer(MMA，St，BA)，andtheemulsifiersCOPSIandCO436onthepr

6、opertiesofPAlatexesandfilmsarestudiedFurthermoretheEPmodifiedPAemulsionsarealsoinvestigatedThePAlatexeswithbetterintegrativepropertiesareobtained，whenthefeedingmethodofshellmonomeriSstarvedsemi—continuous，themassratioofm

7、onomersMMA，StandBAis18：16：14，theamountofseedemulsioniS10％15％，theamountofAPSisO5％O7％，theamountofANis1216％，theamountofDAAMiS4％，COPSIandCO436ratioiS4：1Moreover，waterresistance，toluenesolventresistanceandmechanicalproperties

8、ofPAlatexesareimprovedafterusingEPmodificationInthispapeLPUAcompositeemulsionsarepreparedbyabinitiopolymerizationmethodTheeffectssuchastheamountofDMPAandTMPthemolarratioofNC0／0HandthemassratioofPUandPAonthepropertiesofPU

9、AemulsionsandfilmsarestudiedFurthermore，PUdispersionsmodifiedbynanoSi02arealsoinvestigatedThePUAcompositeemulsionswithbetterintegrativepropertiesareobtainedwhentheamountofDMPAis5％6％andTMPiS2％3％，themolarratioofNCO／OHiS131

10、4andthemassratioofPUandPAiS65／3550／50MoreoveLPUdispersionsmodifiedbVnanoSi02showbetterintegrativeproperties，butnanoSi02aresevereagglomerationinthePUfilmsInthispapef，PUAcompositeemulsionsmodifiedbyEPwithdifferentcore—shel

11、lstructurearepreparedbyusinganewEPfunctionalmonomerwhichcontainsdoublebonds，throughinsitumethodTheresultsshowthatthehydrophobicitytoluenesolventresistanceandmechanicalpropertiesofPUAemulsionsandfilmsareimprovedafterusing