Study on Preparation of Waterborne Epoxy Emulsifier and Properties of Its Emulsion and Coatings

LI Bao-jun; LI Wen-yan; WU Gang

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Study on Preparation of Waterborne Epoxy Emulsifier and Properties of Its Emulsion and Coatings

更新时间：2024-03-11

- Study on Preparation of Waterborne Epoxy Emulsifier and Properties of Its Emulsion and Coatings
- POLYMER BULLETIN Vol. 37, (2024)
- 作者机构：
  
  1. 三棵树（上海）新材料研究有限公司,上海,201100
  2. 福建省建筑涂料企业重点实验室，三棵树涂料股份有限公司,福建,莆田,351100
  3. 复旦大学管理学院,上海,200433
  4. 上海交通大学化学化工学院,上海,200240
  5. 上海航天特种环境高分子功能材料工程技术研究中心,上海,200245
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2024，
  
  Received：8 November 2023，
  
  Revised：5 December 2023，
  
  Accepted：9 December 2023
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LI Bao-jun, LI Wen-yan, WU Gang. Study on Preparation of Waterborne Epoxy Emulsifier and Properties of Its Emulsion and Coatings. [J/OL]. POLYMER BULLETIN 37.(2024)
DOI：

LI Bao-jun, LI Wen-yan, WU Gang. Study on Preparation of Waterborne Epoxy Emulsifier and Properties of Its Emulsion and Coatings. [J/OL]. POLYMER BULLETIN 37.(2024) DOI：

摘要

本文以柠康酸酐、衣康酸酐、聚乙二醇、环氧树脂为原料，不加催化剂合成了一种环保型环氧乳化剂，并通过相反转法制备了水性环氧树脂乳液，利用红外光谱仪、核磁氢谱仪、凝胶渗透色谱、激光粒度仪对乳化剂和乳液的结构和粒径分布进行表征，发现乳液粒径分布较窄且稳定性优异。利用该乳液制备水性环氧涂料，采用热重分析仪、扫描电镜、接触角测量仪对涂层进行了性能和形貌表征，并对涂层的常规性能和腐蚀性测试，水性环氧涂层其干燥时间为20 min（表干）和12 h（实干），涂层力学性能表现较优，挥发性有机化合物（VOC）含量是22 g/L，同时表现出优异的耐水性（1000 h）和耐腐蚀性（中性盐雾试验为800 h）。

Abstract

A eco-friendly epoxy emulsifier was synthesized from citraconic anhydride

itaconic anhydride

polyethylene glycol and epoxy resin without catalyst. The aqueous epoxy emulsion was prepared by phase inversion method. The structure and particle size distribution of the emulsifier and emulsion were characterized by 1H-NMR

GPCand laser particle size analyzer. It was found that the emulsion have narrow particle size distribution and excellent stability. The waterborne epoxy coating was prepared with the aqueous epoxy emulsion. The performance and morphology of the coating were characterized using a thermogravimetric analyzer

scanning electron microscopy

and contact angle measurement instrument

and test the conventional performance and corrosiveness of the coating. The results show that the drying time of the waterborne epoxy coating is 20 minutes (surface dry) and 12 hours (solid dry)

and the mechanical properties of the coating are excellent. The volatile organic compound (VOC) content is 22 g/L

and it exhibits excellent water resistance (1000 hours) and corrosion resistance (800 hours for neutral salt spray test).

关键词

乳化剂环氧乳液涂层挥发性有机化合物

Keywords

EmulsifierEpoxy emulsionCoatingVolatile organic compounds

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