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ID:32467217
大小:1.43 MB
页数:49页
时间:2019-02-06
《醇溶型聚氨酯脲树脂的制备及其结构与性能研究》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、酵潦型聚懿繇瓣撼鼹熬铡备及其缝梭与性能爨究摘要本文豁聚氧化弼烯二元醇(PPG2000)与舜佛尔酗二异氰酸醅(IPDI)或警恭二异鬣骏酪(TDI)以及毋佛尔酮二胺(1PDA)器辩,食成醇漆型聚氨酝躲基料。零j用PPG600、象瓿纯己爝=元酵(PEG200)、PPGl000、裂氧他霖烯二二元胺2、热重分析(TG)以及力学性能测试对舍成鲍黎氮酯脲樾赠进行微观结梅秘性能研究。1.PPG600取代部分PPG2000时,随着PPG600台量的增大,聚氨酯脲树脂缝橡中完全氯键化翡氨酯羰基含量掰热,嚣艨羰基的氮键纯程麓降{螽,橱艏的软硬段趣銮性增强;樾嚣熬控{孛强攫增大,鞭袋{枣长率簿豫。PEG200取代帮分PPG2000时,随着PEG200禽燮的增大,树腊继构中完金氯键化的氮酯羰馨含量也堙翔,傻艨羰基的氯键化程度先降低后升离;树麟的拉伸强度增大,并且在PEG200台鳖较高时树脂豹拉伸强度眈相同鞭段含量含PP3、G600的树脂大。增加辩镶陵酯躲爨对,糖髅结搦中氮酯羰鏊、辫羰纂的氢键佬程度辫增大,软疆段徽榴分离程度提窝;辩鼹的搜{率强攫增大,馕增攘赣度比耦瓣硬段含量含PPG600和PE0200树脂的小。2.PPGl000合成黎氨酶赫树髓时,硬段密度较大,分子镳的溶觯性较差,扩链霜难,树膳静拉伸强发鞍小。D2000合成聚稼树脂时,极性很强的脲基含量较离,分子扩链比较困难,撼熙的分子量较低,力学性能较羞。但越蛰骧基窘鼹嚣增翱,榭艟的耐热性掇蘧。PNA2000取代部分竣全都PPG2000时,树滕的拉伸强度增大,断裂伸长率4、降低。3.与TDI基聚氨懿躲籀托,IPDI基聚氨精艨硬段结构瓶整,疆段之闼容荔蘩集,嚣托鬣翡羰藻糨繇豢基的氢键纯程度较离。4+纯聚醚合成的聚氯醮艨树脂的乙醇溶解性较好,瓣缝构中食有聚黪鲍聚氯酯艨树骚需要用己酸己酸和乙醇鲍混台溶荆作溶剂。关键谰:聚餐黯淼;簿溶墼;销各{结构;馁簸Preparationofethanol—soluble争。垮珏re砉ha狂e鞋re馥resinandstudyonitsstructureandpropertyAbstraetInthispaper,polypreplenegly5、colPPG2000,isophoronediisocyanateortoluenediisocymaateandisophetonediaminewereusedastherawmaterialtosynthesizeethan01.solublepolyurethaneureaasbasematerial.PartoraIlofPPG2000werereplacedbyPPG600,PEG200,PPGl000,D2000andPNA2000ortheamountofdiisocynatewasinc6、reasedtosynthesizeaseriesofpolyurethaneurearesinsolutioninthemixedsolvent.ThestructureandpropertyofresinwerestuledbyDSC,FTIR,TGandtensiletesting.1.WhenPPG600wasusedtoreplacepartofPP02000,theamountoforderedhydrogenbondedurethanecarbonylgroupsincreased,thed7、egreeofhydrogenbondingforureacarbonyIgroupsdecreasedwiththeincreaseofPPG600content.Thereisabettercompatibilityofsoftsegmentandhardsegment,Thetensilestrengthofpolyurethaneurearesinwasenhanced,elongation越breakwasdecreased.WhenPEG200wasusedtoreplacepartofPPG8、2000.theamountoforderedhydrogenbo越edurethanecarbonylgroupsincreasedeither,butthedegreeofhydrogenbondingforureacarbonylgroupsdecreasedfirstandthenincreasedwiththeincreaseofPEG200content,Thetensilestrengthofpolyuretha
2、热重分析(TG)以及力学性能测试对舍成鲍黎氮酯脲樾赠进行微观结梅秘性能研究。1.PPG600取代部分PPG2000时,随着PPG600台量的增大,聚氨酯脲树脂缝橡中完全氯键化翡氨酯羰基含量掰热,嚣艨羰基的氮键纯程麓降{螽,橱艏的软硬段趣銮性增强;樾嚣熬控{孛强攫增大,鞭袋{枣长率簿豫。PEG200取代帮分PPG2000时,随着PEG200禽燮的增大,树腊继构中完金氯键化的氮酯羰馨含量也堙翔,傻艨羰基的氯键化程度先降低后升离;树麟的拉伸强度增大,并且在PEG200台鳖较高时树脂豹拉伸强度眈相同鞭段含量含PP
3、G600的树脂大。增加辩镶陵酯躲爨对,糖髅结搦中氮酯羰鏊、辫羰纂的氢键佬程度辫增大,软疆段徽榴分离程度提窝;辩鼹的搜{率强攫增大,馕增攘赣度比耦瓣硬段含量含PPG600和PE0200树脂的小。2.PPGl000合成黎氨酶赫树髓时,硬段密度较大,分子镳的溶觯性较差,扩链霜难,树膳静拉伸强发鞍小。D2000合成聚稼树脂时,极性很强的脲基含量较离,分子扩链比较困难,撼熙的分子量较低,力学性能较羞。但越蛰骧基窘鼹嚣增翱,榭艟的耐热性掇蘧。PNA2000取代部分竣全都PPG2000时,树滕的拉伸强度增大,断裂伸长率
4、降低。3.与TDI基聚氨懿躲籀托,IPDI基聚氨精艨硬段结构瓶整,疆段之闼容荔蘩集,嚣托鬣翡羰藻糨繇豢基的氢键纯程度较离。4+纯聚醚合成的聚氯醮艨树脂的乙醇溶解性较好,瓣缝构中食有聚黪鲍聚氯酯艨树骚需要用己酸己酸和乙醇鲍混台溶荆作溶剂。关键谰:聚餐黯淼;簿溶墼;销各{结构;馁簸Preparationofethanol—soluble争。垮珏re砉ha狂e鞋re馥resinandstudyonitsstructureandpropertyAbstraetInthispaper,polypreplenegly
5、colPPG2000,isophoronediisocyanateortoluenediisocymaateandisophetonediaminewereusedastherawmaterialtosynthesizeethan01.solublepolyurethaneureaasbasematerial.PartoraIlofPPG2000werereplacedbyPPG600,PEG200,PPGl000,D2000andPNA2000ortheamountofdiisocynatewasinc
6、reasedtosynthesizeaseriesofpolyurethaneurearesinsolutioninthemixedsolvent.ThestructureandpropertyofresinwerestuledbyDSC,FTIR,TGandtensiletesting.1.WhenPPG600wasusedtoreplacepartofPP02000,theamountoforderedhydrogenbondedurethanecarbonylgroupsincreased,thed
7、egreeofhydrogenbondingforureacarbonyIgroupsdecreasedwiththeincreaseofPPG600content.Thereisabettercompatibilityofsoftsegmentandhardsegment,Thetensilestrengthofpolyurethaneurearesinwasenhanced,elongation越breakwasdecreased.WhenPEG200wasusedtoreplacepartofPPG
8、2000.theamountoforderedhydrogenbo越edurethanecarbonylgroupsincreasedeither,butthedegreeofhydrogenbondingforureacarbonylgroupsdecreasedfirstandthenincreasedwiththeincreaseofPEG200content,Thetensilestrengthofpolyuretha
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