Microcrack self‐healing capability of waterborne polyurethane/polyacrylate composites with dynamic disulfide bond

Author:

Liang Shuang123ORCID,Wang Peng1,Sun Zhanying12ORCID,An Haoran12,Wang Xin12,Li Na12

Affiliation:

1. College of Material Science and Engineering Hebei University of Science and Technology Shijiazhuang China

2. Hebei Key Laboratory of Flexible Functional Materials Hebei University of Science and Technology Shijiazhuang China

3. Foshan (Southern China) Institute for New Materials Foshan China

Abstract

AbstractIn this paper, a series of self‐healing waterborne polyurethane/polyacrylate composites (SWPUA) with different disulfide content on the main chain were synthesized. The SWPUAs were synthesized from isophorone diisocyanate, dimethylolpropionic acid, polyether diol and bis(2‐hydroxyethyl) disulfide (HEDS). The structure of the products was characterized by IR and Raman spectra. The effects of different content of HEDS on dispersion stability, mechanical property and self‐healing properties (including tensile strength and breaking elongation) of SWPUAs were studied. The results showed that all the prepared SWPUAs have excellent dispersion stability, thermal stability, self‐healing efficiency and certain hydrophobic capacity. Thereinto, SWPUA‐1 and SWPUA‐2 products with HEDS content of 0.0025 mol and 0.0050 mol have the best repair efficiency. They can recover 101.03% and 102.18%, respectively, after 3 h of repair at 75°C. In addition, SWPUA‐1 has the highest repeatedly repair efficiency of 91% for tensile strength but 75% for breaking elongation because of the influence of physical entanglement and chain link.

Funder

Basic and Applied Basic Research Foundation of Guangdong Province

National Natural Science Foundation of China

Publisher

Wiley

Subject

Materials Chemistry,Polymers and Plastics,Surfaces, Coatings and Films,General Chemistry

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3