高分子方向论文有机硅氟改性丙烯酸酯涂料的制备.docVIP

沈 阳 化 工 大 学 本 科 论 文 题 目: 有机硅氟改性丙烯酸酯涂料的制备 院 系: 材料科学与工程学院 专 业: 材料物理 班 级: 0601 学生姓名: 指导教师: 赵 常 礼 论文提交日期：2010年月日 摘要 以γ-（甲基丙烯酰氧基）丙基三甲氧基硅烷（KH-570）（G-03）(SDS) /辛基苯基聚氧乙烯醚(OP-10)复合乳化剂，过硫酸铵引发剂存在下,采用乳液聚合的方法将其与甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和丙烯酸（AA）进行乳液共聚,制备有机硅氟改性的丙烯酸酯乳液。 实验考查了反应时间对单体转化率的影响，以及有机改性单体含量对聚合凝胶率的影响。结果表明：反应4h单体转化率可达98%；有机硅单体含量为5%有机氟单体含量为20%时乳液聚合凝胶率较小。 对乳液涂膜的膜附着力、冲击强度、柔韧性、耐磨性等性能进行了测试。结果表明: 软硬单体比例为5:4，有机硅单体含量为5%有机氟单体含量为20%时较合适，涂膜的柔韧性、附着力均达到一级膜，冲击强度在50以上，铅笔硬度可达H级。 关键词：有机硅；有机氟；乳液聚合；丙烯酸酯乳液 Abstract In this paper, acrylate copolymer latexes modified by organ-silicon (KH-570) and organ-fluorine (G-03) were prepared via emulsion copolymerization of methacrylate (MMA), butyl acrylate (BA) and acrylic acid (AA) in the presence of SDS and OP-10 as composite emulsifier and Ammonium persulfate as initiator . The effect of reaction time on monomers conversion rate and the effect of different percentage of organ-silicon and organ-fluorine monomers on gel fraction were researched. The polymer chemical structure was measured using FT-IR. The coating properties of impact strength，flexibility, adhesion, hardness, water absorption were measured Results showed that there exists copolymerization between organ-silicone, organ-fluorine and acrylate monomers. The best emulsion was made with the organ-silicon quantity of 5%, the organ-fluorine quantity of 20% and the ratio of soft and hard monomers of 1.25. The gel fraction of the reaction was low and the monomers conversion rate reached 97％he polymer films were tested and had good properties. Key Words: organ-silicon；rgan-fluorine； emulsion copolymerizationacrylate copolymer latexes 目 录 引言 1 一、文献综述 2 1.1 研究背景 2 1.2 有机硅氟改性丙烯酸酯涂料的研究进展 2 1.2.1 有机硅改性丙烯酸树脂的研究进展 2 1.2.2 有机氟改性丙烯酸树脂的研究进展 3 1.2.3 有机硅氟改性丙烯酸树脂的研究进展 4 1.3 存在问题 5 1.4 本