文章摘要
贾贵玉,沈一丁.阳离子丙烯酸酯聚合物/醇酸树脂乳液的制备及性能研究[J].精细化工,2018,35(5):0
阳离子丙烯酸酯聚合物/醇酸树脂乳液的制备及性能研究
Preparation and Properties of Cationic Acrylate Polymer/Alkyd Resin Hybrid Emulsion
投稿时间:2017-04-27  修订日期:2017-08-19
DOI:
中文关键词: 醇酸树脂,丙烯酸酯聚合物,核-壳结构,溶液转相乳液聚合
英文关键词: alkyd resin, acrylic resin, core-shell structure, solution phase inversion polymerization
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作者单位E-mail
贾贵玉 陕西科技大学 jiaguiyusust@163.com 
沈一丁 陕西科技大学 ydshen@sust.edu.cn 
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中文摘要:
      摘要:以甲基丙烯酸二甲氨基乙酯(DM)、甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)为改性单体,偶氮二异丁腈(AIBN)为引发剂,丙二醇甲醚(PM)为助溶剂,冰乙酸(Ac)为中和剂采用溶液转相乳液聚合的方法制备了丙烯酸酯聚合物/醇酸树脂乳液(WPAARSi)。主要探讨了单体滴加时间、聚合反应温度、丙烯酸酯单体配比、醇酸树脂(BTS-SZ)用量对WPAARSi涂膜光泽度及耐水性的影响。采用FT-IR、TEM、GPC、TGA及镜向光泽度计等对聚合物进行结构表征与性能测试。结果表明:当单体滴加时间为2 h,聚合反应温度为85 ℃,m(DM)=6%,m(MMA)∶m(BA)=18∶2,m(BTS-SZ)=55%,m(KH-570)=0.62%,m(AIBN)=1.62%时,涂膜的光泽度为116%,吸水率为2.8%。TEM测试表明,乳胶粒具有核-壳结构;GPC测试表明改性后醇酸树脂的数均分子量由1413提高到了2945,重均分子量由5152提高到19853,相对分子质量分布变宽;TGA测试表明改性后醇酸树脂的热稳定性提高;流变行为分析表明乳液具有良好的触变性。
英文摘要:
      Abstract:The Acrylate polymer/alkyd resin hybrid emulsion (WPAARSi) was prepared by solution phase inversion polymerization using the dimethylaminoethyl methacrylate (DM), methyl methacrylate (MMA), butyl acrylate (BA), γ-methacryloxypropyltrimethoxysilane (KH-570) as modified monomers, azobisisobutyronitrile (AIBN) as initiator, ropylene glycol methyl ether (PM) as cosolvent and acetic acid (Ac) as neutralizer. The effects of monomer dropping time, polymerization temperature, monomer ratio of acrylate monomers and amount of alkyd resin (BTS-SZ) on the gloss and water resistance of WPAARSi coating were investigated. The structure and properties of the polymer were characterized by FT-IR, TEM, GPC, TGA, rheological analyzer and mirror to gloss meter. The results showed that when the dropping time was 2 h, the polymerization temperature was 85 ℃, m(DM)=6%,m(MMA)∶m(BA)=18∶2,m(BTS-SZ)=55%,m(KH-570)=0.62%,m(AIBN)=1.62%, the gloss of the coating was 116% and the water absorption was 2.8%. TEM test showed that the latex particles presented the core-shell structure. GPC test showed that the mass average molecular weight of the modified alkyd resin increased from 1413 to 2945, the weight average molecular weight increased from 5152 to 19853, and the relative molecular mass distribution became wide. TGA tests showed that the thermal stability of the modified alkyd resin was improved. Analysis of emulsion rheological behavior indicated that the emulsion presented good thixotropy.
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