不同软段结构对MDI型TPU微观相分离及热性能的影响
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- 英文论文题名：Effect of Soft Segment Structure on Microphase Separation and Heat Resistance of MDI Based TPU
- 论文作者：李春涛
- 英文论文作者：LI Chuntao ; School of Mechanical and Automotive Engineering ; South China University of Technology
- 年：2016
- 作者机构：华南理工大学机械与汽车工程学院;
- 论文关键词：热塑性聚氨酯 ; 软段 ; 微观相分离 ; 耐热性能
- 英文论文关键词：thermoplastic polyurethane ; soft segment ; microscopic phase separation ; heat resistance
- 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：4
- 文件大小：1224k
- 原文格式：D
- 会议级别：全国
摘要
以4,4′-二苯基甲烷二异氰酸酯(MDI)和扩链剂1,4-丁二醇(BDO)作为硬段,分别以聚酯二元醇(PEA)、聚四氢呋喃二元醇(PTMG)、聚己内酯二元醇(PCL)及聚碳酸酯二元醇(PCDL)作为软段,采用预聚体法,制备了4种热塑性聚氨酯弹性体(TPU)。研究了不同的软段结构对TPU的微观相分离及热性能的影响。结果表明:PTMG聚醚型TPU与3种聚酯型TPU相比具有较高的微观相分离程度,但耐老化性能较差;聚酯型TPU的耐老化性能好,但微观相分离程度小。
With the prepolymerization method,a series of thermoplastic polyurethane elastomer(TPU) were synthesized using polyethylene adipate(PEA),polytetramethylene glycol(PTMG),polycaprolactonediol(PCL) and poly-carbonate-hexane diol(PCDL) as the soft segments,4,4'-diphenylmethane diisocyanate(MDI) and 1,4-butanediol(BDO) as the hard segments.The effect of different soft segment structure of microscopic phase separation elastomers and thermal properties was discussed.The results showed that,comparing with three polyester polyurethanes,PTMG-TPU had a high degree of microscopic phase separation but poor ageing-resistant performance.The three kinds of polyester polyurethane had excellent ageing-resistance but small degree of microscopic phase separation.
With the prepolymerization method,a series of thermoplastic polyurethane elastomer(TPU) were synthesized using polyethylene adipate(PEA),polytetramethylene glycol(PTMG),polycaprolactonediol(PCL) and poly-carbonate-hexane diol(PCDL) as the soft segments,4,4'-diphenylmethane diisocyanate(MDI) and 1,4-butanediol(BDO) as the hard segments.The effect of different soft segment structure of microscopic phase separation elastomers and thermal properties was discussed.The results showed that,comparing with three polyester polyurethanes,PTMG-TPU had a high degree of microscopic phase separation but poor ageing-resistant performance.The three kinds of polyester polyurethane had excellent ageing-resistance but small degree of microscopic phase separation.
引文
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[2]刘厚钧.聚氨酯弹性体手册[M].2版.北京:化学工业出版社,2012:282-283.
[3]LEE D K,TSAI H B,TSAI R S,et al.Preparation and properties of transparent thermoplastic segmented polyurethanes derived from different polyols[J].Polymer Engineering Science,2007,47(5):695-701.
[4]谢长琼,周元林,马佳俊.聚己内酯改性研究进展[J].塑料科技,2009,37(4):100-104.
[5]HATAKEYAMA T,IZUTA Y,HIROSE S,et al.Phase transitions of lignin-based polycaprolactones and their polyurethane derivatives[J].Polymer,2002,43(4):1177-1182.
[6]刘锦春,肖建斌.MDI体系聚氨酯弹性体的合成及性能[J].特种橡胶制品,2006,27(4):12-15.
[7]赵孝彬,杜磊,张小平,等.聚氨酯弹性体及其微相分离[J].高分子材料科学与工程,2002,18(2):16-20.