Page 41 - 《精细化工》2020年第4期

第 37 卷第 4 期 精 细 化 工 Vol.37, No.4
202 0 年 4 月 FINE CHEMICALS Apr. 2020

功能材料
含短氟碳链结构水性环氧树脂的制备及性能

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赵 鹏 ，单昌礼 ，娄静洁 ，陈 琦 ，张英强 ，李志杰
（1.上海应用技术大学 材料科学与工程学院，上海 201418；2. 上海英科实业有限公司，上海 201417）
摘要：采用环氧树脂（E-44）、异佛尔酮二异氰酸酯（IPDI）、1,1,1,3,3,3-六氟-2-丙醇（HFIP）、二乙烯三胺
（DETA）为主要原料，合成了一种含短氟碳链结构的水性环氧乳化型固化剂，并与氟改性环氧树脂乳化配制成
一种环保、疏水型含短氟碳链结构的水性环氧树脂。采用接触角测定仪、FTIR、AFM、TGA 和 DMA 对该树脂
的结构、固化膜的表面性能、热性能及力学性能进行表征和考察。结果表明：与无氟体系相比，含氟结构改性
的环氧体系的耐热性和疏水性得到一定程度的提高，较低的氟含量 2.4%（氟元素在环氧固化物中的质量分数，
下同）即可达到疏水的效果。随着氟含量增加到 5.1%，环氧树脂固化膜的铅笔硬度从 3H 提高到 5H，但是附着
力降低了 1 级，玻璃化转变温度从 68 ℃提高到了 80 ℃，同时表面粗糙程度也得到提高，使得水接触角进一步
增大到最佳的 98°，得到的固化膜具有最佳的热稳定性，其最大热分解温度为 373.1 ℃。
关键词：氟改性；短氟碳链结构；水性环氧固化剂；环保涂料；疏水性；功能材料
中图分类号：TQ322.4 文献标识码：A 文章编号：1003-5214 (2020) 04-0675-07

Preparation and properties of waterborne epoxy resin

with short fluorocarbon chain structure

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ZHAO Peng , SHAN Changli , LOU Jingjie , CHEN Qi , ZHANG Yingqiang , LI Zhijie
(1. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2. Shanghai Yingke Industrial Corporation Limited, Shanghai 201417, China)
Abstract: A waterborne self-emulsification epoxy curing agent modified with short fluorocarbon chain was
synthesized using epoxy resin (E-44), isophorone diisocyanate (IPDI), 1,1,3,3,3-hexafluoro-2-propanol
(HFIP) and diethylenetriamine (DETA) as main raw materials. Then, it was emulsified with fluorine-
modified epoxy resin to prepare an environment-friendly hydrophobic waterborne epoxy resin. The
structure of the resin, surface properties, thermal properties and mechanical properties of the cured films
were characterized by contact angle tester, FTIR, AFM, TGA and DMA. The results showed that the heat
resistance and hydrophobicity of the fluorine-containing epoxy system were higher than those of
fluorine-free epoxy system to some extent, and lower fluorine content (2.4%, mass fraction of fluorine in
epoxy cured substance, the same below) could make the cured film exhibit good hydrophobicity. With the
increase of fluorine content to 5.1%, the pencil hardness of epoxy resin cured film increased from 3H to 5H,
but the adhesion decreased by 1 level, and the glass transition temperature increased from 68 ℃ to 80 ℃.
At the same time, the surface roughness was also improved, which further increased the water contact angle
to an optimum value (98°). The cured film had the best thermal stability with a maximum thermal
decomposition temperature of 373.1 ℃.
Key words: fluorine modification; short fluorocarbon chains; waterborne epoxy curing agent; environment-
friendly coating; hydrophobicity; functional materials

收稿日期：2019-07-25; 定用日期：2019-10-28; DOI: 10.13550/j.jxhg.20190731
基金项目：上海市科促会/教育基金会联盟计划资助（LM201909）；企业领军型创新人才引进培育项目（CQ20163009）；上海科技
创新行动计划项目（15520503400）
作者简介：赵鹏（1996—），硕士生，E-mail：573848956@qq.com。联系人：张英强（1976—），男，副教授，E-mail：sh_yqzhang@
sina.com。