环氧树脂涂料的水溶性改性

辽宁石油化工大学学报 ›› 2008, Vol. 28 ›› Issue (1): 8-12.

环氧树脂涂料的水溶性改性

高文艺, 任立国, 凌立锋

辽宁石油化工大学化学与材料科学学院, 辽宁抚顺113001

收稿日期:2007-10-23 出版日期:2008-03-20 发布日期:2017-07-22
作者简介:高文艺(1967 ) :男河南新郑市高级实验师

The Water -Solubility Modification of the Epoxy Resin Coating#br#

School of Chemistry &Materials Science , Liaoning University of Petroleum &Chemical Technology , Fushun Liaoning 113001, P .R .China

Received:2007-10-23 Published:2008-03-20 Online:2017-07-22

摘要/Abstract

摘要： 利用丙烯酸环氧树脂的接枝共聚反应制备了环氧-丙烯酸自乳化自交联水性防腐乳液。研究了反应温度、反应时间、环氧树脂相对分子质量、合成树脂的酸值、引发剂浓度、溶剂、中和剂等对合成树脂水乳液稳定性及单体转化率的影响。实验结果表明, 合成环氧-丙烯酸树脂选用的共溶剂是质量比为2 ∶3 的乙二醇单丁醚与正丁醇, 用相对分子质量大于2 900 的环氧树脂, 合成树脂的酸值80 mg(KOH)/g(固体)以上, 过氧化苯甲酰用量为接枝单体量的6%, 在120 ℃反应5 h 。用N , N-二甲氨基乙醇和水混合液中和, 中和度为70 %～ 80 %, pH 值为7.5～ 8.5 , 制得水分散乳液。在该条件下所制得的乳液的固含量为20 %～ 40%, 并且乳液的储存、稀释、机械和冻融等稳定性好。

关键词: 环氧树脂, 　丙烯酸, 　乳液, 　水性涂料, 　防腐

Abstract:

　 Epoxy -acrylic emulsion was synthesized from epoxy resin and acrylic by graft -polymerization, which is self -emulsified and self -crosslink water -borne anticorrosive emulsion .The influences of temperature , reaction time , molecular weight of epoxy resin, acid number of synthetic resin , concentration of initiating agent , solvent and neutralization agent on the dispersal stability of synthetic resin and conversion of monomer were investigated .The results show ed as follows:the appropriate mass ratio of butylcello solve to n -butyl alcohol in cosolvent is 2 ∶3 , the molecular weight of epoxy resin is over 2 900 , acid number of synthetic resin is 80 mg(KOH)/g , content of benzoperoxide is 6 % of the content of monomer , reaction temperature is 120 ℃, and reaction time is 5 hours .The resin was salified with the mixed solvent of N, N-dimethylaminopro -alcohol and water .At this time , neutralized degree is 70%～ 80% and the pH value is 7.5 ～ 8 .5 .Under optimum reaction condition , solid content o f emulsion is 20%～ 40 % and the emulsion is characterized with the excellent properties of deposit , dilution machinery and freeze -thaw .

Key words: Epoxy resin, , Acrylic, , Emulsion, , Water -bome coating, , Anticorrosive

高文艺, 任立国, 凌立锋. 环氧树脂涂料的水溶性改性[J]. 辽宁石油化工大学学报, 2008, 28(1): 8-12.

GAO Wen -yi,REN Li -guo,LING Li -feng. The Water -Solubility Modification of the Epoxy Resin Coating#br#[J]. Journal of Liaoning Petrochemical University, 2008, 28(1): 8-12.

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