摘要
以丙烯酸丁酯(BA)和甲基丙烯酸甲酯(MMA)、丙烯酸(AA)和γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)为单体,过硫酸铵为引发剂,十二烷基苯磺酸钠(SDBS)和烷基酚聚氧乙烯醚(OP-10)为复合乳化剂,采用半连续乳液聚合法合成了复合胶黏剂乳液.采用红外光谱对聚合物结构进行了表征,热重分析研究了聚合物胶膜的热稳定性.接触角的测定表征了聚合物膜的表面性能.研究了反应温度,引发剂和乳化剂用量等因素的影响.结果表明,聚合反应速率随着反应温度的提高而加快.随着引发剂和乳化剂用量的增加,乳液的粒径减小,乳液更加稳定.硅改性后的聚合物具有较好的耐水性和热稳定性.
A kind of adhesive emulsion was prepared by emulsion polymerization, in which methyl methacrylate, butyl acrylate, acrylic acid and methacryloxy propyl trimethoxyl silane （KH-570） as monomers, sodium dodecyl benzene sulfonate and alkylphenol ethoxylates（OP- 10） as emulsifiers, ammonium persulfate as initiator. The factors of influence on kinetics of emulsion polymerization were studied. FT-IR was used to confirm the molecule structure. TG was used to characterized latex film＇s heat stability. Surface properties of the latex film were measured by contact angle measurements. The results showed that the latex particle size was decreased with increasing emulsifier and initiator. Temperature had great effect on the rate of polymerization. The rate grew up dramatically with the increase of reaction temperature. The hydrophobie and oleophobic performance increased with increasing the concentration of KH-570. The latex modified by KH-570 had excellent thermal property.
出处
《陕西科技大学学报（自然科学版）》
2012年第5期53-56,共4页
Journal of Shaanxi University of Science & Technology
基金
陕西省科技攻关项目(2008K07-32)
陕西科技大学博士科研启动基金项目(BJ06-07)
关键词
乳液聚合
有机硅
丙烯酸酯
乳液粒径
emulsion polymerization
organic silicone
acrylate
particle size
