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ID:34825494
大小:1.07 MB
页数:50页
时间:2019-03-11
《动态硫化nbrpp热塑性弹性体的研制》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、四川大学硕士学位论文动态硫化NBR/PP热塑性弹性体的研制姓名:张鑫申请学位级别:硕士专业:化学工程指导教师:褚良银;韩刚20050101四川大学工程硕士学位论丈动态硫化NBR/PP热塑性弹性体的研制化学1程领域研究生:张鑫指导教师:褚良银教授、韩刚高级工程师摘要采用动态硫化技术和增容技术研制了NBR/PP热塑性弹性体(TPE),运用MAPP(马来酸酐接枝聚丙烯)、DETA(二乙烯基三胺)和XNBR(羧基1腈)增容体系制备了性能良好的共混体,该配方拉伸强度和扯断伸长率均大幅度提高,比较而言,DETA先加入XNBR中得到的TPE扯断伸长率较大,拉
2、伸强度较低,而DETA与MAPP或DETA与MAPP、PP反应得到的增容剂拉伸强度得到明显提高。对硫化体系、共混配方和工艺条件进行了优选研究及力学性能测试等。结果表明,羧基NBR/二乙烯基三胺/马来酸酐PP(ⅪqBR/DETA/MAPP)并用是NBR/PP共混改性的有效增容体系,在基于MAPP的增容体系中,DETA和XNBR是两种关键的组份。实验所得NBR/PPTPE的密度为0.99,硬度为89邵A,300%定伸应力为9.96MPa,拉伸强度为11.65MPa,扯断伸长率达340%,耐油性能优良,达到了国外MONSANTO公司同类产品Geola
3、st的水平,与多种常见的耐油橡胶(如NBR,CPE,CR,CSM等)相比,同样硬度下(高硬度)NBR/PPTPE的密度约低50%,扯断伸长率约高100%.200%。关键词:丁腈橡胶;聚丙烯;动态硫化;增容剂:热塑性弹性体;性能四川大学工程硕士学位论文DevelopmentofDynamicVulcanizedNBR/PPThermoplasticElastomerField:ChemicalEngineeringStudent:ZhangXinSupervisor:ChuLiangyin,HanGangABSTRACTNBR/PPthermop
4、lasticelastomer(TF’E)waspreparedbydynamicvulcanizationandcompatibilizationtechnology.MAPP,DETAandXNBRcompatibilizationsystemwasusedtOmakepolymerblendinggoodqualityThetensilestrengthofthisformulationanditsenlongationatbreakwereallincreased.IfDETAwasputintoXNBRalittleearlier,t
5、heenlongationatbreakofTPEwasbiggerandthetensilestrengthwassmaller.IfDETAwasreactedwithMAPPorMAPPandPP,theresultWasthatthetensilestrengthofcompatibilizerwasincreasedobviously.Theoptimiumvulcanizationsystem,blendingformulationandprocessconditionwereseeked.Theresultsindicatedth
6、atthecarbonylNBR/diethyltriamine/maleieanhydridePP(XNBR/DETA/MAPP)combinationwasalleffectivecompatilizationsystem,andthetechnologyroutewasfeasible.InthecompatibilizationsystembasedonMAPP,thetwokeycomponentswereDETAandXNBR.Fromtheexperiments,thedensityofNBR/PPTPEwas0.99,theha
7、rdnesswas89ShoreA,thelimitedelongationstressof300%was9.96MPa,thetensilestrengthoftheresultingproductwas11.65Mpa,anditselongationatbreakwas340%,theoil-proofpropertywasverygood,thepropertieswereasgoodasthoseofthesimilar四川大学工程硕士学位论文productGeolastofMonsantoCompany.Comparedwithth
8、egeneraloil—proofrubber,suchasNBR,CPE,CR,CSM,whenthehardness(highhardness)w
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