水性聚氨酯樹脂的制備與改性研究.pdf

1、青島科技大學(xué)碩士學(xué)位論文水性聚氨酯樹脂的制備與改性研究姓名：杜娟申請學(xué)位級別：碩士專業(yè)：有機(jī)化學(xué)指導(dǎo)教師：李再峰20100603ITHESYNTHESISMODIFICATIONOFWATERBNEPOLYURETHANERESINABSTRACTInthisdissertationtheexperimentalschemeofinneroutercrosslinkingtechnologieswereusedtorealizethes

2、tructuremodificationofwaterbnepolyurethaneresinswhichimprovedthepropertiesofwaterbnepolyurethaneresinssuchaswaterresistantsolventresistantetc.Thedissertationconsistsoftwopartsasfollows.Thefirstpart，waterbnepolyurethanere

3、sinmodifiedbytrimethylolpropanedehydratedcastoleate(TMPDCO)wascarriedout.ThesynthesistechnologyofTMPDCOwasstudied.Theoptimizedreactiontime(8h)reactiontemperature(160℃)weredeterminedbymeasuringesterificationratioofreactio

4、nsystemobservingtheproductscol.ThedesiredTMPDCOproductwithhydroxylvalueof257.2mgKOHg1wassynthesized.TheeffectofTMPDCOcontentonwaterresistant、chemicalresistantheatresistantofwaterbnepolyurethanefilmswasresearched.Theresul

5、tsshowedthatwhenthemolcontentofTMPDCOwas40%thefilmsshowedthebestchemicalresistantheatresistant.Whilesoakinginwaterf6datambienttemperaturetheabsptionratewasonly6.9%thefilmsappearancehasnochange.Thefilmshasnochangewhilesoa

6、kinginboilingwaterf15minshowedgoodheatresistant.Theheatresistanttemperaturewas85℃.Theambientcurablemechanismwasgiven.TheeffectofRonmechanicalpropertieswasresearched.WithincreasofRthefilmsbecamebrittlemechanicalproperties

7、improved.WithdecreasofRthehardnessoffilmsdecreasedelongationcouldbeminished.WhenRwas5thefilmshowedthebestproperties.ThecrosslinkingdegreeTgofPUfilmwereincreasedwiththeadditionofTMPDCO.TheE44contentinfluencedtheappearance

8、ofemulsiontheabsptionratelowtemperatureflexibilityofthefilmsetc.ThefilmshowedthebestpropertieswhentheE44contentwas2.0%～4.0%.Thesecondpart，anionicwaterbnepolyurethaneresinterminatedbyHEMAwasprepared.TheeffectofTMPDCOconte