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1、-ABSTRACTABSTRACTThepaperreportedthesynthesisofanoveloxetanecompound3-Ethyl-3-allyloxymethyloxetane,andthestudyofitspropertiesinradical,cationicandhybrid-typeUV-curablesystemwith3-ethyl-3-allyloxymethyloxetaneasthereactivediluent.Thedetailsofresearchareasfollows:Firstly,
2、3-Ethyl-3-allyloxymethyloxetanewassynthesizedbyutilizing3-Ethyl-3-hydroxymethyloxetane(EHO)andallylbromideasrawmaterials,tetrabutylammoniumbromideasphasetransfercatalyst,togetherwiththeaqueoussolutionofpotassiumhydroxide.Theeffectsoffeedratiooftherawmaterials,amountofcat
3、alyst,reactiontemperatureandreactiontimeontheyieldwereresearched,andthebestreactionconditionswereasfollows:n(EHO):n(allylbromide)=1:1.4,m(EHO):m(tetrabutylammoniumbromide)=23.2:1,thereactiontemperaturewas0℃,thereactiontimewas24h.Secondly,thenovelreactivemonomerwasintrodu
4、cedinthecationic-typeUV-curablematerials.Theresultsshowedthat:thenovelreactivemonomerhasagoodeffectondilutingepoxy,andthebestmassfractionofthephotoinitiatorwas5%;whenm(epoxyresin):m(thenewreactivemonomer)=4:1,cured-materialexhibitsgoodmechanicalproperties,thermalproperti
5、es,flexibility,adhesion,waterresistanceandacidresistance.Thirdly,thenovelreactivemonomerwasintroducedintheradical-type
UV-curablematerials.Theresultsrevealedthat:Thepreferredchargeratioof
photoinitiatorwas4%,andwhenthemassfractionofthenewreactivediluentwas
20%,cured-mate
6、rialsexhibitbetterflexibility,mechanicalpropertiesthanthosewhen
theepoxyacrylateisusedalone.Besides,thecured-materialshavegoodadhesionand
pendulumhardness.Fourthly,thenovelreactivemonomerwasintroducedinthehybrid-type
UV-curablematerials.Theeffectsoftheselectionandtheamou
7、ntofphotoinitiatoron
curingconversionwerestudied,andtheresultsdemonstratedthat:thebest
photoinitiatorwastheonecompoundedwithUV-6976andUV-1173by1:1,andtheII---ABSTRACTpreferredchargeratiowas7%.Theeffectsoftheinputofthenovelreactivemonomer,epoxyresinandepoxyacrylateuponthe
8、propertiesofcured-materialswereinvestigated,theresultsshowedthat:whenthemassfractionofthenewreactivedil
