Preparation and Performance of Self-Healing Cross-Linked Polyurethane Urea Based on Disulfide Bond

被引：0
|
作者：
Yan W. [1 ]
Wan L. [1 ]
Li Y. [1 ]
Yan M. [1 ]
机构：
[1] School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2023年 / 39卷 / 09期
关键词：
disulfide bond; polyurethane urea; repair rate; self-repair;
D O I：
10.16865/j.cnki.1000-7555.2023.0202
中图分类号：
学科分类号：
摘要：
Cystine dimethyl ester (CDE) containing disulfide bonds was prepared through methyl esterification reaction of D- cystine (CYS) and methanol. A self- healing cross- linked polyurethane urea (SH- PUU) material with dynamic disulfide bonds was prepared by chain extension of isocyanate terminated polyurethane prepolymers (IPDI-PTMG and IPDI-TEA). Infrared spectroscopy was used to characterize the structure of SH-PUU, and the mechanical properties, thermal stability and repair properties of SH-PUU prepared at different ratios were investigated by electronic universal testing machine, differential scanning calorimeter, thermogravimetric analyser and optical microscope. When the chain extension coefficient (the mole ratio of —NH2 in the CDE to the mole ratio of —NCO in the system) is 0.9 and the mass fraction of IPDI-TEA is 10%, the SH-PUU material shows good mechanical properties and excellent repair performance, its tensile strength is 5.22 MPa, and the repair efficiency is 93.9%. In addition, the material has multiple self-repair properties and self-healing ability at room temperature, with a repair rate of 65.0% after 3 self-repairs and 30.0% after 24 h at room temperature. © 2023 Chengdu University of Science and Technology. All rights reserved.
引用
收藏
页码：135 / 143
页数：8
相关论文
共 15 条
  • [1] Wang Y L, Hu G S, Zhang J T, Et al., Development of self-healing poly(urethane urea) with high performances based on the synergistic effect of disulfide bonds and hydrogen bonds, Chemical Industry and Engineering Progress, 40, 1, pp. 324-331, (2021)
  • [2] Feng H Y, Yu F, Zhou Y, Et al., Fabrication of microcapsule- type composites with the capability of underwater self- healing and damage visualization, RSC Advances, 10, pp. 33675-33682, (2020)
  • [3] Hu R F, Zhao J, Wang Y H, Et al., A highly stretchable, self-healing, recyclable and interfacial adhesion gel: preparation, characterization and applications, Chemical Engineering Journal, 360, pp. 334-341, (2018)
  • [4] Liu Q, Liu Y B, Zheng H, Et al., Design and development of self-repairable and recyclable crosslinked poly(thiourethane‐urethane) via enhanced aliphatic disulfide chemistry, Journal of Polymer Science, 58, pp. 1092-1104, (2020)
  • [5] Wang B, Li Z Y, Liu F Y, Et al., Eco- friendly, self- repairing polymer materials based on reversible Diels- Alder chemistry, Journal of Macromolecular Science, 57, pp. 888-895, (2020)
  • [6] Guo Z R, Gu H J, He Y, Et al., Dual dynamic bonds enable biocompatible and tough hydrogels with fast self- recoverable, self- healable and injectable properties, Chemical Engineering Journal, 388, pp. 124285-124297, (2020)
  • [7] Li M Y, Liu N, Chen J H, Et al., Development of reprocessable novel sulfurcontaining epoxy based on thermal treatment, RSC Advances, 8, pp. 28386-28394, (2018)
  • [8] An S Y, Noh S M, Nam J H, Et al., Dual sulfide- disulfide crosslinked networks with rapid and room temperature self-healability, Macromolecular Rapid Communications, 36, pp. 1255-1260, (2015)
  • [9] Liu M C, Zhong J, Li Z J, Et al., A high stiffness and self-healable polyurethane based on disulfide bonds and hydrogen bonding, European Polymer Journal, 124, pp. 109475-109499, (2020)
  • [10] Qu Q, Wang H, He J, Et al., Synthesis and properties of responsive self- healing polyurethane containing dynamic disulfide bonds, High Performance Polymers, 33, pp. 1132-1140, (2021)
12