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ID:35122823
大小:3.78 MB
页数:89页
时间:2019-03-19
《探究聚氨酯-聚丙烯酸酯复合乳液的合成与性能》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、华南理工大学硕士学位论文聚氨酯-聚丙烯酸酯复合乳液的合成与性能姓名:洪亮申请学位级别:硕士专业:化学工程指导教师:蓝仁华;瞿金清20030501摘疆摘要豢氨囊~浆嚣烯羧魏(列焱)复会翼滚绩合了聚懿熬2、发麓静类对PUA孚k滚貔肇l备帮毽黢夔影貔;考察TDMPA含量、R值、中和度、残留NCO百分比,胺扩链剂3、含量,单体含量,引发剂用量等配方因素辩PUA霉£渡戆毒l备帮牲熊夔影璃;褥至l了潮套木器漆曩PUA翼液耱最佳鬏辩选箨鞫配方。零文对三萋孛工艺路线制餐PUA嚣滚懿特点遴嚣了瓣}£礴究,发瑷攀薅孛秘工艺套装氨酯预聚体中和时用乙烯基单体代替有机溶剂降粘,因此可大量减少溶剂用爨,具有成本氨、污染小、工艺麓单翡馥点;由予该工艺不#i-:JH嚣纯裁,劳能蕊零俸充分溶涨在魁种子熙,使得五烯基单体和聚氯酯在分子水平上缠结在一起,乳液聚台时易于得到大小均匀、影态溉整的其襄核壳缀镌载PUA巍胶靛,著在核轰之鹅易发生攘技或螭互贯穿,从而得到性能更加优肄的产品。零文研究了翼纯滋度、分数速度、摹L滚聚合4、湿度簿_I艺参数对PUA嚣滚剃备帮经缝的影响。考察了二羟甲基丙酸加料方斌和引发剂加料方式对PUA制备和性能的影响。得至l了翅备PUA飘渡豹簸佳工艺条棼;本文对PUA乳液聚合的聚合动力学进行了初步探索,得到聚合速率和单体浓度、引发裁惩基数慕零关系。本文通过激光粒度分析、傅立叶变换红外光谱(FTIR)分析和示差扫描嫩热(DSC)分辑慰会残懿PUA翼滚送行了续兹表缓,结果表疆PUA翼蔽糖装经大,分毒窄;P毽秘PA两相有较好的相容性,但仍存在微相分离状态,这说明设计的反相核壳乳液聚合得到了实现,合成豹PUA魏液巍胶粒其有骥显妁核壳结构姆惩。美键镧:聚氯薅一聚瓣烯酸臻;单落中秘工慈;反褪5、挟壳魏液浆含;核宠结梭牮嘉理王大学工学硬±学位论文ABSTRACTPolyurethane-polyacrylate(PUA)hybridemulsionwithalowcostcombinesgoodpropertiesofpolyurethane(p玢emulsionandpolyaerylate(PA)emulsion。Itisthethirdgenerationaqueouspolyurethaneandithasawideapplyperspective.Anaqueouspolyurethane—polyacrylate(PUA)hybridemulsionwith6、core-shellstructureWaSpreparedbyreverseCOre—shellemulsionpolymerizationfromtoluenediisoeyanate(TDl),polyetherbinaryalcohol(N210),dimethylolpropionicacid(DMPA)andvinylmonomerse耋c。弧eeffectsofdifferentvinylmonomersanddifferentinitiatorsonthepreparationandpropertiesofPUAhybridemulsionwerestudied7、.TheeffectsofsomecompositionfactorssuchasDMPAcontent,Rvalaue(nNco]noH),neutralizationdegree,freeNe0%,ethylenediamine(EDA)content,monomercontent,initiatorcontentetc.,onthepropertiesofPUAhybridemulsionanditsfilmwerestudied。n蛇optimalrawmaterialselectionandreactionformulationwereobtained.Threedi8、fferentprocessWaScomparedontheeffectsofpropertiesofPUAemulsion.Inthemonomerneutralizationprocess,vinylmonomerwasaddedintopolyurethaneprepolymerduringneutralizationtodecreaseviscosityoftheprepolymerinsteadoforganicsolvent,SOthecostWaSreduced,process
2、发麓静类对PUA孚k滚貔肇l备帮毽黢夔影貔;考察TDMPA含量、R值、中和度、残留NCO百分比,胺扩链剂
3、含量,单体含量,引发剂用量等配方因素辩PUA霉£渡戆毒l备帮牲熊夔影璃;褥至l了潮套木器漆曩PUA翼液耱最佳鬏辩选箨鞫配方。零文对三萋孛工艺路线制餐PUA嚣滚懿特点遴嚣了瓣}£礴究,发瑷攀薅孛秘工艺套装氨酯预聚体中和时用乙烯基单体代替有机溶剂降粘,因此可大量减少溶剂用爨,具有成本氨、污染小、工艺麓单翡馥点;由予该工艺不#i-:JH嚣纯裁,劳能蕊零俸充分溶涨在魁种子熙,使得五烯基单体和聚氯酯在分子水平上缠结在一起,乳液聚台时易于得到大小均匀、影态溉整的其襄核壳缀镌载PUA巍胶靛,著在核轰之鹅易发生攘技或螭互贯穿,从而得到性能更加优肄的产品。零文研究了翼纯滋度、分数速度、摹L滚聚合
4、湿度簿_I艺参数对PUA嚣滚剃备帮经缝的影响。考察了二羟甲基丙酸加料方斌和引发剂加料方式对PUA制备和性能的影响。得至l了翅备PUA飘渡豹簸佳工艺条棼;本文对PUA乳液聚合的聚合动力学进行了初步探索,得到聚合速率和单体浓度、引发裁惩基数慕零关系。本文通过激光粒度分析、傅立叶变换红外光谱(FTIR)分析和示差扫描嫩热(DSC)分辑慰会残懿PUA翼滚送行了续兹表缓,结果表疆PUA翼蔽糖装经大,分毒窄;P毽秘PA两相有较好的相容性,但仍存在微相分离状态,这说明设计的反相核壳乳液聚合得到了实现,合成豹PUA魏液巍胶粒其有骥显妁核壳结构姆惩。美键镧:聚氯薅一聚瓣烯酸臻;单落中秘工慈;反褪
5、挟壳魏液浆含;核宠结梭牮嘉理王大学工学硬±学位论文ABSTRACTPolyurethane-polyacrylate(PUA)hybridemulsionwithalowcostcombinesgoodpropertiesofpolyurethane(p玢emulsionandpolyaerylate(PA)emulsion。Itisthethirdgenerationaqueouspolyurethaneandithasawideapplyperspective.Anaqueouspolyurethane—polyacrylate(PUA)hybridemulsionwith
6、core-shellstructureWaSpreparedbyreverseCOre—shellemulsionpolymerizationfromtoluenediisoeyanate(TDl),polyetherbinaryalcohol(N210),dimethylolpropionicacid(DMPA)andvinylmonomerse耋c。弧eeffectsofdifferentvinylmonomersanddifferentinitiatorsonthepreparationandpropertiesofPUAhybridemulsionwerestudied
7、.TheeffectsofsomecompositionfactorssuchasDMPAcontent,Rvalaue(nNco]noH),neutralizationdegree,freeNe0%,ethylenediamine(EDA)content,monomercontent,initiatorcontentetc.,onthepropertiesofPUAhybridemulsionanditsfilmwerestudied。n蛇optimalrawmaterialselectionandreactionformulationwereobtained.Threedi
8、fferentprocessWaScomparedontheeffectsofpropertiesofPUAemulsion.Inthemonomerneutralizationprocess,vinylmonomerwasaddedintopolyurethaneprepolymerduringneutralizationtodecreaseviscosityoftheprepolymerinsteadoforganicsolvent,SOthecostWaSreduced,process
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