基于芳香族端氨基聚四亚甲基醚软段的聚脲弹性体结构与性能

doi:10.13232/j.cnki.jnju.2019.03.017

南京大学学报(自然科学版) ›› 2019, Vol. 55 ›› Issue (3): 498–503.doi: 10.13232/j.cnki.jnju.2019.03.017

基于芳香族端氨基聚四亚甲基醚软段的聚脲弹性体结构与性能

丁晓冬¹，张　陆¹，耿洪斌²，陈庆民²*

1. 中国船舶工业系统工程研究院，北京，100036； 2. 南京大学化学化工学院高分子科学与工程系，南京，210023;

收稿日期:2019-01-20 出版日期:2019-06-01 发布日期:2019-05-31
通讯作者: 陈庆民 E-mail:chenqm@nju.edu.cn

Structure and properties of polyurea elastomers based on aromatic amine－terminated polytetramethylene ether

Ding Xiaodong¹，Zhang Lu¹，Geng Hongbin²，Chen Qingmin²*

1. Systems Engineering Research Institute，Beijing，100036，China； 2. Department of Polymer Science and Engineering，School of Chemistry and Chemical Engineering，Nanjing University，Nanjing，210023，China;

Received:2019-01-20 Online:2019-06-01 Published:2019-05-31
Contact: Chen Qingmin E-mail:chenqm@nju.edu.cn

摘要/Abstract

摘要： 以氨基在苯环上不同取代位的芳香族端氨基聚四亚甲基醚(APTMEG)与甲苯二异氰酸酯(TDI)或异佛尔酮二异氰酸酯(IPDI)反应制备了聚脲弹性体. 研究了氨基取代位置、氨基聚醚分子量、二异氰酸酯种类等因素对反应速度、聚脲弹性体相态结构和性能等的影响. 结果表明：随着对应氨基在苯环上的对位、间位、邻位取代位顺序的改变，聚脲弹性体的制备操作时间从5 s延长到300 min，拉伸强度逐渐降低，软硬段相容性增加. 不同氨基取代位、氨基聚醚分子量、异氰酸酯制成聚脲弹性体的拉伸强度范围为9 M～45 MPa，拉断伸长率范围为400%～1000%.

关键词: 聚　脲, 弹性体, 氨基聚醚, 二异氰酸酯, 聚四亚甲基醚

Abstract: In this paper，polyurea elastomers were prepared by the reaction of aromatic amine－terminated polytetramethylene ether(APTMEG)with diisocyanate at different substituted sites. The effects of substitution position of aromatic amine group，molecular weight of polyether and type of diisocyanate on the reaction rate，phase structure and properties of elastomers were studied. The results show that the operable time of polyurea elastomer is prolonged from 5 s to 300 min，the tensile strength of the elastomer decreases gradually and the compatibility between hard and soft segments increases with the order of para，meta and ortho substitution of aromatic amine groups in APTMEG. According to the different substitution position of aromatic amine group，molecular weight of polyether and isocyanate，the tensile strength of the prepared polyurea elastomer ranges from 9 M to 45 MPa，and the elongation at break is among 400%～1000%.

Key words: polyurea, elastomer, amine polyether, diisocyanate, polytetramethylene ether

中图分类号:

O632.6

丁晓冬，张　陆，耿洪斌，陈庆民. 基于芳香族端氨基聚四亚甲基醚软段的聚脲弹性体结构与性能[J]. 南京大学学报(自然科学版), 2019, 55(3): 498–503.

Ding Xiaodong，Zhang Lu，Geng Hongbin，Chen Qingmin. Structure and properties of polyurea elastomers based on aromatic amine－terminated polytetramethylene ether[J]. Journal of Nanjing University(Natural Sciences), 2019, 55(3): 498–503.

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基于芳香族端氨基聚四亚甲基醚软段的聚脲弹性体结构与性能

Structure and properties of polyurea elastomers based on aromatic amine－terminated polytetramethylene ether

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