交联方式对水性丙烯酸酯性能的研究
关键词：水性丙烯酸酯；核壳结构；交联方式；交联剂；性能
Research for the Performance of Core-shell Structured Waterborne Acrylate at Different Cross-linking Methods
Abstract：The purpose of this paper is to study three kinds of cross-linking methods (i.e. , self-cross-linking at ambient temperature, high temperature and metal ion cross-linking) effect on the performance of core-shell structured waterborne acrylate. Mainly using methyl methacrylate (MMA), n-butylacrylate (BA) and vinyl acetate as raw materials prepared core-shell structured vinegar acrylic emulsion, and add diacetoneacrylamide (DAAM), N-methylolacrylamide (NMA) and zinc acetate, dihydrate as cross-linking agent for its modification, and study the type and amount of cross-linking agent on the properties of emulsion. The research results show that with self-cross-linking and metal ions cross-linking, the amount of cross-linking agent is 3%, and the modified emulsion presents its optimum performance;with high temperature cross-linking the amount of cross-linking agent is 3%, and the modified emulsion presents its optimum performance.After modification, it increases the glass transition temperature of the emulsion, and effectively improves the water resistance and hardness of core-shell structured waterborne acrylate. It can be found from the experimental data, with the high temperature cross-linking emulsion performance is slightly better than with self – cross-linking and metal ions cross-linking.
Key Words: Core-shell Structure;Acrylic;Cross-linking methods; Performance;
目 录
1 文献综述 1
1.1 丙烯酸酯的概况 1
1.2 核壳结构的水性丙烯酸酯 1
1.2.1 制备核壳结构的水性丙烯酸酯的原料 1
1.2.2 核壳结构的水性丙烯酸酯的生成机理与制备方法 2
1.2.3 核壳结构的水性丙烯酸酯性能与用途 4
1.3 改性核壳结构的水性丙烯酸酯 4
1.3.1 交联剂简介 4
1.3.2 不同交联方式改性核壳结构的水性丙烯酸酯 5
1.4 现有问题 8
1.5 选题目的与意义 8
1.6 研究内容和目标 9
1.7 本课题创新点 9
2 实验部分 10
2.1 原料及试剂 10
2.2 实验仪器 10
2.2.1 MS2000激光粒度仪 10
2.2.2动态热机械分析仪 11
2.2.3 FT-IR红外光谱仪 12
2.2.4 LX-A橡胶硬度计 12
2.3 实验基本配方 13
2.4 实验方法 13
2.4.1 核壳结构的醋丙乳液制备的实验步骤 13
2.4.2 自交联核壳结构的醋丙乳液成膜 14
2.4.3 高温交联核壳结构的醋丙乳液成膜 14