HMDI型聚氨酯弹性体的改性研究
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- 英文论文题名：Study on Modification of HMDI-Type Polyurethane Elastomers
- 论文作者：张成彬 ; 向平 ; 王鹏 ; 张均 ; 李夏 ; 姜志国
- 英文论文作者：ZHANG Chengbin ; XIANG Ping ; WANG Peng ; LI Xia ; LIU Bo ; JIANG Zhiguo ; College of Materials Science & Engineering ; Beijing University of Chemical & Technology ; Systems Engineering Research Institute ; China Stateship Building Corporation
- 年：2016
- 作者机构：北京化工大学材料科学与工程学院;中国船舶工业系统工程研究院;
- 论文关键词：聚氨酯弹性体 ; 改性 ; 机械性能 ; 阻尼性能 ; 耐水性
- 英文论文关键词：polyurethane elastomer ; modification ; mechanical property ; damping property ; water-resistant capability
- 会议召开时间：2016-07-30
- 会议录名称：中国聚氨酯工业协会第十八次年会论文集
- 语种：中文
- 分类号：TQ334.1
- 学会代码：JAZG
- 会议名称：中国聚氨酯工业协会第十八次年会
- 会议地点：中国上海
- 主办单位：中国聚氨酯工业协会
- 学会名称：中国聚氨酯工业协会
- 页数：5
- 文件大小：1391k
- 原文格式：D
- 会议级别：全国
摘要
以4,4'-二环己基甲烷二异氰酸酯(HMDI)、聚醚多元醇等为主要原料,1,4-丁二醇(BDO)为扩链剂,采用预聚体法合成了聚氨酯弹性体(PUE),并采用环氧树脂对HMDI型聚氨酯弹性体进行了改性研究。讨论了化学改性后PUE的拉伸强度、断裂伸长率、硬度、压缩永久变形、耐水性、损耗因子等性能。结果表明,环氧树脂中的环氧基团发生开环反应,能有效改善聚氨酯和环氧树脂分子间的相容性及相互贯穿程度;随环氧树脂添加量的增加,PUE硬度逐渐减小,而压缩永久变形、断裂伸长率逐渐增加,PUE耐水性和拉伸强度先增加后降低;动态力学性能测试表明,随环氧树脂添加量的增加,PUE的T_g逐渐增加,而损耗因子tanδ_(max)逐渐减小。
The polyurethane elastomers were synthesized with HMDI,polyether plolyols as the main raw material,l,4-butanediol(BDO) as the chain extender by two-step process,and then were modified with epoxy resin(EP) by chemical methods.The tensile strength,elongation at break,hardness,compression set,water-resistant capability,loss factor of modified polyurethane elastomers were studied especially.The results showed that the epoxide groups in epoxy resin occurred ring-opening reaction,effectively improved the miscibility and interpenetrate of PU and EP.The hardness gradually decreased,the elongation at break and compression set gradually increased,the tensile strength and the waterresistant capability firstly increased and then decreased with the increasing amount of epoxy resin.The DMTA indicated that the glass transition temperature(T_g) of PU was gradually increased but the loss factor(tanδ_(max)) decreased with the increasing amount of epoxy resin.
The polyurethane elastomers were synthesized with HMDI,polyether plolyols as the main raw material,l,4-butanediol(BDO) as the chain extender by two-step process,and then were modified with epoxy resin(EP) by chemical methods.The tensile strength,elongation at break,hardness,compression set,water-resistant capability,loss factor of modified polyurethane elastomers were studied especially.The results showed that the epoxide groups in epoxy resin occurred ring-opening reaction,effectively improved the miscibility and interpenetrate of PU and EP.The hardness gradually decreased,the elongation at break and compression set gradually increased,the tensile strength and the waterresistant capability firstly increased and then decreased with the increasing amount of epoxy resin.The DMTA indicated that the glass transition temperature(T_g) of PU was gradually increased but the loss factor(tanδ_(max)) decreased with the increasing amount of epoxy resin.
引文
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[2]山西省化工研究所.聚氨酯弹性体[M].北京:化学工业出版社,1985:6-13.
[3]卫晓利,邱圣军,吴晓青.原料及合成工艺对水性聚氨酯性能的影响[J].中国胶粘剂,2005,14(8):20-22.
[4]李桂林.环氧树脂与环氧涂料[M].北京:化学工业出版社,2003:279-299.
[5]吴校彬,傅和青,黄洪,等.防水涂料用环氧改性聚氨酯树脂的合成[J].湖南师范大学自然科学学报,2006,29(4):57-61.
[6]陈世杰,毛闯,许海燕,等.EP-g-PU IPN结构阻尼材料[J].功能高分子学报,2011,24(2):125-130.
[7]陈世杰.聚氨酯接枝环氧树脂结构阻尼材料[D].上海:华东理工大学,2012.
[8]王继印,黄毅萍,陶灿,等.二乙醇胺开环环氧树脂改性水性聚氨酯的合成及性能研究[J].涂料工业,2014,44(2):32-38.
[9]翁秀兰,王宇龙,陈永新,等.红外光谱在高分子材料研究中的应用[J].红外,2011,32(9):43-46.
[10]KADURINA T I,PROKOPENKO V A,OMELCHENKO S I.Curing of epoxy oligomers by isocyanates[J].Polymer,1992,33(18):3858-3864.
[11]郭晓战,王著.氘化聚酯型聚脲氨酯弹性体的红外光谱研究[J].光谱学与光谱分析,2001,21(3):320-323.
[12]李扬,王丽,陈庆民.软段含量对丁羟聚氨酯脲动态力学和压缩性能的影响[J].聚氨酯工业,2014,29(2):13-16.
[13]姚畅,曾少敏,陈爱芳,等.超支化水性聚氨酯的合成与表征[J].高分子材料科学与工程,2009(6):35-38.