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190805-FeCl2–H2O2 体系合成氟硅丙−苯胺共聚乳液的合成及性能研究

   作者:李玉峰,李硕,祁实    单位:齐齐哈尔大学材料科学与工程学院    日期:2019-05-17     浏览:137    评论:0    
提示:中文核心期刊,中国科技核心期刊! DOI: 10.19289/j.1004-227x.2019.08.005FeCl2H2O2 体系合成氟硅丙苯胺共聚乳液的合成及性能研

中文核心期刊,中国科技核心期刊 !   



DOI: 10.19289/j.1004-227x.2019.08.005

FeCl2–H2O2 体系合成氟硅丙−苯胺共聚乳液的合成及性能研究

李玉峰1, *,李硕2,祁实2,李继玉2,高晓辉2(1.齐齐哈尔大学材料科学与工程学院,黑龙江 齐齐哈尔 161006;2.齐齐哈尔大学化学与化学工程学院,黑龙江 齐齐哈尔 161006)

摘要:以甲基丙烯酸十二氟庚酯(DFMA)、乙烯基三甲氧基硅烷(VTMS)为功能单体,通过无皂乳液聚合法合成氟硅丙(FSiAc)乳液,进而向乳液中加入苯胺(Ani)单体并引入FeCl2 和H2O2 溶液,通过化学氧化法合成FSiAc–Ani 共聚乳液。讨论了FeCl2与H2O2 的物质的量比以及H2O2 与Ani 的物质的量比对乳液固含量、凝聚率、乳胶粒粒径及乳胶涂层接触角、吸水率、附着力和耐蚀性的影响。结果表明,FeCl2–H2O2 体系催化可以使Ani 在FSiAc 乳胶粒子表面聚合,当FeCl2 与H2O2 的物质的量比为1∶80,H2O2 与Ani 的物质的量比为2∶1 时,共聚乳液固含量最高,凝聚率较小,乳胶粒子粒径约为120 nm,具有明显的核壳结构。电化学阻抗谱和极化曲线测量的结果表明此时乳胶涂层的耐蚀性最佳。该乳胶涂层的水接触角可达98.51°,吸水率为6.51%。

关键词:丙烯酸酯乳液;氟;硅;改性;聚苯胺;共聚;防腐

中图分类号:TQ637

文献标志码:A 

文章编号:1004 – 227X (2019) 08 – 0357 – 08

Synthesis of fluoro-silicon-acrylate–aniline copolymer emulsion in a FeCl2–H2O2 system and study on its properties // LI Yu-feng*, LI Shuo, QI Shi, LI Ji-yu, GAO Xiao-hui

Abstract: A fluoro-silicon-acrylate (FSiAc) emulsion was synthesized with dodecafluoroheptyl methacrylate (DFMA) and vinyltrimethoxysilane (VTMS) as functional monomers by soap-free emulsion polymerization, and then added with aniline (Ani) monomer and FeCl2/H2O2 solution to prepare an FSiAc–Ani copolymer emulsion via chemical oxidation. The effects of FeCl2-to-H2O2 and H2O2-to-Ani molar ratios on solid content, condensation rate, and particle size of the emulsion and the water contact angle, water absorption rate, adhesion, and corrosion resistance of the latex film were studied. The results indicated that Ani was polymerized under the catalysis of FeCl2 and H2O2 on the surfaces of FSiAc latex particles. When the molar ratio was 1:80 for FeCl2 to H2O2 and 2:1 for H2O2 to Ani, the copolymer emulsion had the highest solid content, a small condensation rate, a particle size of 120 nm, and a distinct core–shell structure. The latex film obtained therefrom had the best anticorrosion performance as shown by the results of electrochemical impedance spectroscopy and polarization curve measurement, and it had a water contact angle up to 98.51° and a water absorption rate of 6.51%.

Keywords: acrylate emulsion; fluorine; silicon; modification; aniline; copolymerization; anticorrosion

First-author’s address: College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, China

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