Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings

Yan Song; Kai-Feng Chen; Jing-Jing Wang; Yuan Liu; Tao Qi; Guo Liang Li

doi:10.1007/s10118-019-2317-x

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Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings

ARTICLE | Updated：2019-09-03

- Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings
- Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings
- Chinese Journal of Polymer Science 2020年38卷第1期页码：45-52
- Affiliations：
  
  a.National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  b.Xiamen Advanced Materials Academy of Luoyang Ship Material Research Institute, Xiamen 361101, China
  c.Science and Technology on Marine Corrosion and Protection Laboratory, Qingdao 266101, China
- Author bio：
  
  glli@ipe.ac.cn
- Funds：
  
  This work was financially supported by the National Key Research and Development Plan (No. 2016YFC0303700), the National Natural Science Foundation of China (No. 51803215), CAS Pioneer Hundred Talents Program, and Beijing Municipal Natural Science Foundation (No. 2182075).
- DOI：10.1007/s10118-019-2317-x
  中图分类号：
- 收稿：2019-02-18，
  
  修回：2019-5-28，
  
  录用：2019-6-17，
  
  网络首发：2019-09-03，
  
  纸质出版：2020-01
- Accepted：
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Citation: Song, Y.; Chen, K. F.; Wang, J. J.; Liu, Y.; Qi, T.; Li, G. L. Synthesis of polyurethane/poly(urea-formaldehyde) double-shelled microcapsules for self-healing anticorrosion coatings. Chinese J. Polym. Sci. 2020, 38, 45–52

Yan Song, Kai-Feng Chen, Jing-Jing Wang, et al. Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings[J]. Chinese Journal of Polymer Science, 2020, 38(1): 45-52.
Citation: Song, Y.; Chen, K. F.; Wang, J. J.; Liu, Y.; Qi, T.; Li, G. L. Synthesis of polyurethane/poly(urea-formaldehyde) double-shelled microcapsules for self-healing anticorrosion coatings. Chinese J. Polym. Sci. 2020, 38, 45–52 DOI： 10.1007/s10118-019-2317-x.

Yan Song, Kai-Feng Chen, Jing-Jing Wang, et al. Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings[J]. Chinese Journal of Polymer Science, 2020, 38(1): 45-52. DOI： 10.1007/s10118-019-2317-x.

摘要

Abstract

One-component

catalyst-free self-healing coatings with double-shelled polymer microcapsules have drawn considerable attention due to wide applications. In this work

the synthesis parameters of double-shelled polymer microcapsules and the mechanism of the self-healing process were systematically investigated. Apart from the chemical structure of the microcapsule shell

the shell thickness

the microcapsule size

and the core fraction could affect the self-healing anticorrosion properties. The synthesis parameters were further optimized in terms of the agitation rate

weight ratio of core to shell

and temperature. Under these conditions

the microcapsule shell consisting of a rough surface formed by poly(urea-formaldehyde) and a smooth inner wall by polyurethane was prepared. The size of the microcapsules and core fraction were calculated to be approximately 30 μm and 75%

respectively. The self-healing anticorrosion coating incorporating as-synthesized microcapsules exhibited corrosion resistance in artificially scratched areas

which was further characterized by electrochemical impedance spectroscopy.

关键词

Keywords

references

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