OALib Journal期刊
ISSN: 2333-9721
费用:99美元
|
|
|
新型非离子水性聚氨酯的制备及性能研究
Keywords: 非离子聚氨酯,乳液,粒径,力学性能,形貌
Abstract:
?采用聚四氢呋喃醚二醇(ptmeg,mn=2000)、异佛尔酮二异氰酸酯(ipdi)和1,4-丁二醇(1,4-bd)为主要原料合成了非离子水性聚氨酯乳液。采用三羟甲基丙烷聚乙二醇单甲醚(tmpeg,mn=1200)作为非离子型亲水扩链剂,将重复的(—ch2ch2o—)引入聚氨酯大分子中,作为侧链。采用傅里叶变换红外表征了非离子聚氨酯的结构。使用电子拉力试验机研究了氰羟比r值[n(—nco)/n(—oh)]、交联剂三羟甲基丙烷(tmp)和后扩链剂乙二胺(eda)的用量对非离子型水性聚氨酯力学性能和吸水溶胀比的影响。透射电镜(tem)图片和乳液粒径测试证实了非离子聚氨酯能够很好地分散在水中,并且粒径随tmpeg用量增大而减小。研究结果表明,r值的增大和tmp、eda用量的提高都使得胶膜拉伸强度增大,而断裂伸长率和吸水溶胀比下降。
References
[1] | chattopadhyaydk,rajukvsn.structuralengineeringofpolyurethanecoatingsforhighperformanceapplications[j].progressinpolymerscience,2007,32(3):352-418.
|
[2] | leesk,kimbk.highsolidandhighstabilitywaterbornepolyurethanesviaionicgroupsinsoftsegmentsandchaintermini[j].journalofcolloidandinterfacescience,2009,336:209-214.
|
[3] | vilasdathawale,monaakulkarni.polyesterpolyolsforwaterbornepolyurethanesandhybriddispersions[j].progressinorganiccoatings,2010,67:44-54.
|
[4] | dengxh,liuf,luoyf,etal.preparation,structureandpropertiesofcomb-branchedwaterbornepolyurethane/ommtnanocomposites[j].progressinorganiccoatings,2007,60:11-16.
|
[5] | zhangcy,zhangxy,daijb,etal.synthesisandpropertiesofpdmsmodifiedwaterbornepolyurethane-acrylichybridemulsionbysolvent-freemethod[j].progressinorganiccoatings,2008,63:238-244.
|
[6] | 丁彩凤,魏庆莉,孙学红,等.水性聚氨酯乳液的性能及其影响因素[j].涂料技术与文摘,2004,25(6):15-18.
|
[7] | 吕维忠,刘波,韦少慧.水性聚氨酯胶膜耐水性研究[j].皮革科学与工程,2006,16(2):50-53.
|
[8] | 朱万章.交联剂在室温固化双组分水性涂料中的应用[j].中国涂料,2008,23(3):46-49.
|
[9] | 孙启龙,黄少婵,李建宗,等.乙二胺扩链剂对水性聚氨酯性能的影响[j].中国胶黏剂,2005,14(10):1-5.
|
[10] | ggündüz.highlybranchedandtartaricacid-basedwater-borneresins[j].journalofappliedpolymerscience.2001,80:604-612.
|
[11] | klausnoll,cologne.aqueousdispersionsofpolyurethanehavingsidechainpolyoxyethyleneunits:us,3905929[p].1975-09-16.
|
[12] | helmutreiff,jurgenlienert,rolandnast,etal.non-ionicpolyurethanedispersionshavingsidechainsofpolyoxyethylene:us,3920598[p].1975-11-18.
|
[13] | sukhs,haejl,junghk.effectsofcarboxylgroupsdissociationanddielectricconstantonparticlesizeofpolyurethanedispersions[j].colloidsandsurfacesa:physicochem.eng.aspects1998,133:295-301.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|