Mechanically Robust and Highly Transparent Polyurethane Elastomer With Excellent Adhesion Enabled by Hierarchical Hydrogen Bonds

IF 2.8 3区 化学 Q2 POLYMER SCIENCE
Chenrui Zhang, Qingchuang Lu, Meng Song, Zhenyang Luo, Lei Duan, Yanlong Luo
{"title":"Mechanically Robust and Highly Transparent Polyurethane Elastomer With Excellent Adhesion Enabled by Hierarchical Hydrogen Bonds","authors":"Chenrui Zhang,&nbsp;Qingchuang Lu,&nbsp;Meng Song,&nbsp;Zhenyang Luo,&nbsp;Lei Duan,&nbsp;Yanlong Luo","doi":"10.1002/app.57281","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Many high-strength polyurethane materials have been developed in the past, but combining other functionalities such as high transparency, adhesion, and self-healing properties is still a great challenge. We prepare a mechanically robust polyurethane elastomer with high transparency and self-healability. The relationship between its structure and properties is elaborated. Acylsemicarbazide (ASCZ) and urethane groups are introduced into the hard segments of the polyurethane elastomer, and by modulating the spacer groups between the ASCZ and urethane groups, the fine modulation for the hydrogen bonding density and the hard domain size is realized. By the exquisite regulation of molecular structure, the HMDI-SPH elastomer with sebacic dihydrazide (SPH) as the chain extender, polytetramethylene ether glycol (PTMEG) as the soft segments, and methylene-bis(4-cyclohexyl isocyanate) (HMDI) as the isocyanate can achieve a high elasticity due to the rich and hierarchical hydrogen bonds. Such hydrogen bonds impede the crystallization of PTMEG and facilitate the formation of homogeneously distributed hard-phase microdomains. The HMDI-SPH elastomer exhibits good mechanical robustness (tensile strength of 45.7 MPa, toughness of ~140.8 MJ m<sup>−3</sup>), transparency (transmittance &gt; 95%), and self-healing (self-healing efficiency of 86.6%). Meanwhile, HMDI-SPH has good adhesive strength on a variety of substrates such as walnut (~10.81 MPa) and steel (~14.60 MPa).</p>\n </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 32","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/app.57281","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0

Abstract

Many high-strength polyurethane materials have been developed in the past, but combining other functionalities such as high transparency, adhesion, and self-healing properties is still a great challenge. We prepare a mechanically robust polyurethane elastomer with high transparency and self-healability. The relationship between its structure and properties is elaborated. Acylsemicarbazide (ASCZ) and urethane groups are introduced into the hard segments of the polyurethane elastomer, and by modulating the spacer groups between the ASCZ and urethane groups, the fine modulation for the hydrogen bonding density and the hard domain size is realized. By the exquisite regulation of molecular structure, the HMDI-SPH elastomer with sebacic dihydrazide (SPH) as the chain extender, polytetramethylene ether glycol (PTMEG) as the soft segments, and methylene-bis(4-cyclohexyl isocyanate) (HMDI) as the isocyanate can achieve a high elasticity due to the rich and hierarchical hydrogen bonds. Such hydrogen bonds impede the crystallization of PTMEG and facilitate the formation of homogeneously distributed hard-phase microdomains. The HMDI-SPH elastomer exhibits good mechanical robustness (tensile strength of 45.7 MPa, toughness of ~140.8 MJ m−3), transparency (transmittance > 95%), and self-healing (self-healing efficiency of 86.6%). Meanwhile, HMDI-SPH has good adhesive strength on a variety of substrates such as walnut (~10.81 MPa) and steel (~14.60 MPa).

Abstract Image

机械坚固和高度透明的聚氨酯弹性体,具有优异的附着力,由分层氢键实现
过去已经开发了许多高强度聚氨酯材料,但结合其他功能,如高透明度,附着力和自愈性能仍然是一个巨大的挑战。我们制备了一种机械坚固的聚氨酯弹性体,具有高透明度和自愈性。阐述了其结构与性能之间的关系。在聚氨酯弹性体的硬段中引入酰基氨基脲(ASCZ)和氨基甲酸乙酯基团,通过调节ASCZ和氨基甲酸乙酯基团之间的间隔基团,实现了氢键密度和硬畴尺寸的精细调节。通过对分子结构的精细调控,以癸二酸二肼(SPH)为扩链剂,聚四甲基醚乙二醇(PTMEG)为软段,亚甲基-双(4-环己基异氰酸酯)(HMDI)为异氰酸酯的HMDI-SPH弹性体由于氢键丰富且层次化而具有较高的弹性。这种氢键阻碍了PTMEG的结晶,促进了均匀分布的硬相微畴的形成。HMDI-SPH弹性体具有良好的机械鲁棒性(抗拉强度为45.7 MPa,韧性为~140.8 MJ m−3)、透明度(透光率为95%)和自愈性(自愈率为86.6%)。同时,HMDI-SPH在胡桃木(~10.81 MPa)和钢(~14.60 MPa)等多种基材上均具有良好的粘接强度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Applied Polymer Science
Journal of Applied Polymer Science 化学-高分子科学
CiteScore
5.70
自引率
10.00%
发文量
1280
审稿时长
2.7 months
期刊介绍: The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信