辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2019, Vol. 39 ›› Issue (5): 7-12.DOI: 10.3969/j.issn.1672-6952.2019.05.002

• 化学与化学工程 • 上一篇    下一篇

水性环氧乳液的制备与性能

海春杰，宋雨方，李兰，林娜，张洪吉，东为富   

  1. （江南大学 化学与材料工程学院，江苏 无锡 214122）
  • 收稿日期:2019-07-03 修回日期:2019-07-24 出版日期:2019-10-31 发布日期:2019-10-30
  • 通讯作者: 东为富（1976⁃），男，博士，教授，博士生导师，从事聚合物复合材料研究；E⁃mail：wfdong@jiangnan.edu.cn
  • 作者简介:海春杰（1994-），女，硕士研究生，从事双亲性大分子研究；E-mail：chunjiehai@qq.com
  • 基金资助:
    国家自然科学基金项目（BK20150135）

Preparation and Properties of Waterborne Epoxy Emulsion

Hai Chunjie，Song Yufang，Li Lan，Lin Na，Zhang Hongji，Dong Weifu   

  1. （College of Chemistry and Materials Engineering, Jiangnan University, Wuxi Jiangsu 214122, China）
  • Received:2019-07-03 Revised:2019-07-24 Published:2019-10-31 Online:2019-10-30

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摘要： 采用丁二酸酐对聚乙二醇单甲醚(mPEG)进行改性，得到羧酸型mPEG⁃COOH，将mPEG⁃COOH与环氧树脂反应，得到水性环氧树脂乳化剂。环氧树脂乳化剂与环氧树脂混合，通过相反转技术，得到稳定的水性环氧树脂乳液。采用红外光谱、高效液相色谱、粒度分析仪等对该乳化剂的结构及环氧树脂乳液的稳定性、粒径分布等进行表征。研究了乳化剂合成时甲氧基聚乙二醇相对分子质量、环氧树脂相对分子质量、乳化剂浓度等对乳液稳定性的影响。结果表明，成功制备出了水性环氧乳化剂及水性环氧乳液。水性环氧乳液的粒径分布在0.8~1.5 μm，且乳液稳定性良好。该水性环氧树脂乳液与胺类固化剂室温固化后，所得涂膜具有较好的耐水、耐污性能，其吸水率和耐水失重率分别为0.35%和0.25%。

关键词: 乳化剂, 水性环氧, 相反转, 耐水性

Abstract: Methoxypolyethylene glycols (mPEG) was first modified with succinic anhydride to obtain carboxylic acid terminated mPEG(mPEG⁃COOH). Epoxy resin emulsifier was fabricated by mixing the mPEG⁃COOH with epoxy resin, and the stable aqueous epoxy resin emulsion was obtained by phase inversion technique. The emulsifier structure, particle size distribution and the emulsion stability were characterized by infrared spectroscopy, high performance liquid chromatography and particle size analyzer. The effects of the molecular weight of mPEG, the type of epoxy resin and the emulsifier concentration on emulsion stability were carefully studied. The results showed that aqueous epoxy emulsifier and waterborne epoxy emulsion were successfully prepared. The aqueous epoxy emulsion has a particle size distribution of 0.8~1.5 μm and good emulsion stability. The obtained cured films by reacting the emulsion and amine curing agent at room temperature showed good water resistance and pollution resistance. Its water absorption rate and water loss weight loss rate were 0.35% and 0.25%, respectively.

Key words: Emulsifier, Waterborne epoxy emulsion, Phase inversion, Water resistance

引用本文

海春杰，宋雨方，李兰，林娜，张洪吉，东为富. 水性环氧乳液的制备与性能[J]. 辽宁石油化工大学学报, 2019, 39(5): 7-12.

Hai Chunjie，Song Yufang，Li Lan，Lin Na，Zhang Hongji，Dong Weifu. Preparation and Properties of Waterborne Epoxy Emulsion[J]. Journal of Liaoning Petrochemical University, 2019, 39(5): 7-12.

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