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材料导报  2024, Vol. 38 Issue (3): 22050109-5    https://doi.org/10.11896/cldb.22050109
  高分子与聚合物基复合材料 |
水性有机硅改性环氧树脂的制备与性能
何丽红1,*, 马悦帆1, 杨克1, 徐心硕2, 李青林1
1 重庆交通大学材料科学与工程学院,重庆 400074
2 重庆交通大学土木工程学院,重庆 400074
Preparation and Properties of Waterborne Silicone Modified Epoxy Resin
HE Lihong1,*, MA Yuefan1, YANG Ke1, XU Xinshuo2, LI Qinglin1
1 School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
2 School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
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摘要 利用二甲基二氯硅烷(DMDCS)与环氧树脂E51中-OH缩合反应合成有机硅改性环氧树脂,并采用相反转法制备水性有机硅改性环氧树脂,以疏水性优选有机硅改性环氧树脂合成条件,分析了乳化工艺对乳液平均粒径的影响,并考察了固化膜性能。结果表明,在环氧树脂40 g、DMDCS 1.6 g、溶剂用量20 mL、50 ℃反应8 h的条件下,有机硅改性环氧树脂与水的接触角为106.8°;当乳化剂用量为25%、乳化温度为65 ℃、剪切机转速为3 000 r/min时,乳液平均粒径为1.011 μm,储存稳定性(30 d)和离心稳定性(3 000 r/min,30 min)良好;水性有机硅改性环氧固化膜固化时间短,具有优良的疏水性、力学性能、耐腐蚀性能。
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何丽红
马悦帆
杨克
徐心硕
李青林
关键词:  有机硅改性环氧树脂  水性有机硅改性环氧树脂  疏水性  粒径  固化膜    
Abstract: Silicone modified epoxy resin was synthesized by the condensation reaction between dichlorodimethylsilane(DMDCS) and -OH of epoxy resin E51, and waterborne silicone modified epoxy resin was prepared by reverse transfer method, and the synthesis conditions of silicone modified epoxy resin were optimized by hydrophobicity. The influence of emulsification process on the average particle size of emulsion was analyzed, and the properties of cured film were investigated. The results showed that epoxy resin 40 g, DMDCS 1.6 g, solvent dosage 20 mL, reaction at 50 ℃ for 8 h, the contact angle between silicone modified epoxy resin and water was 106.8°; emulsifier dosage 25%, emulsification temperature 65 ℃, shear speed 3 000 r/min, average particle size of waterborne silicone modified epoxy resin emulsion was 1.011 μm, storage stability (30 d) and centrifugal stability (3 000 r/min, 30 min)were good. Waterborne silicone modified epoxy curing film had shorter curing time, excellent hydrophobicity, mechanical properties, corrosion resistance.
Key words:  silicone modified epoxy resin    waterborne silicone modified epoxy resin    hydrophobicity    particle size    curing film
出版日期:  2024-02-10      发布日期:  2024-02-19
ZTFLH:  TQ633  
基金资助: 重庆市教委科学技术研究项目(KJZD-K202200701);重庆市研究生联合培养基地建设项目(JDLHPYJD2021001); 重庆交通大学研究生科研创新项目(2021S0052)
通讯作者:  *何丽红,重庆交通大学材料科学与工程学院教授、博士研究生导师,主要从事道路新材料研发与应用研究。2005年于武汉理工大学材料学院取得硕士学位,2016年在重庆交通大学土木学院道路与铁道专业取得博士学位。主持/主研国家自然科学基金4项、省部级科研项目20余项;发表学术论文30余篇,其中SCI、EI收录10余篇,出版专著1本;授权国家发明专利10余项,获公路学会科学技术奖1项。sunnyhlh@cqjtu.edu.cn   
引用本文:    
何丽红, 马悦帆, 杨克, 徐心硕, 李青林. 水性有机硅改性环氧树脂的制备与性能[J]. 材料导报, 2024, 38(3): 22050109-5.
HE Lihong, MA Yuefan, YANG Ke, XU Xinshuo, LI Qinglin. Preparation and Properties of Waterborne Silicone Modified Epoxy Resin. Materials Reports, 2024, 38(3): 22050109-5.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.22050109  或          https://www.mater-rep.com/CN/Y2024/V38/I3/22050109
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