| 梯度乳液聚合制备核壳结构丙烯酸酯乳液——合成工艺 |
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| 引用本文： | 张心亚,孙志娟,傅和青,黄洪,蓝仁华,陈焕钦. 梯度乳液聚合制备核壳结构丙烯酸酯乳液——合成工艺[J]. 湖南师范大学自然科学学报, 2006, 29(4): 62-67 |
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| 作者姓名： | 张心亚 孙志娟 傅和青 黄洪 蓝仁华 陈焕钦 |
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| 作者单位： | 华南理工大学化工与能源学院化学工程研究所,广州,510641 |
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| 摘 要： | 采用梯度种子乳液聚合方法,引入半连续单体滴加工艺和亲水性功能单体,制备了零VOC乳胶涂料专用的具有较高玻璃化温度(tg)、较低最低成膜温度(tMF)的核/壳结构的纯丙烯酸酯乳液.讨论了合成工艺、乳化剂种类和用量、亲水性功能单体及各阶段单体用量等因素对乳液结构及tMF的影响.实验结果表明采用梯度种子乳液聚合工艺和引入亲水性功能单体———甲基丙烯酸羟丙酯(HPMA)可有效地降低丙烯酸乳液的tMF(tMF<3℃),提高乳液的冻融稳定性和钙离子稳定性.
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| 关 键 词： | 梯度乳液聚合 核壳结构乳液 最低成膜温度 玻璃化温度 |
| 文章编号： | 1000-2537（2006）04-0062-06 |
| 收稿时间： | 2006-09-27 |
| 修稿时间： | 2006-09-27 |
Study of Core-shell Structure Acrylate Emulsion Prepared by Gradual Emulsion Polymerization: Synthesis Technology |
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| ZHANG Xin-ya,SUN Zhi-juan,FU He-qing,HUANG Hong,LAN Ren-hua,CHEN Huan-qin. Study of Core-shell Structure Acrylate Emulsion Prepared by Gradual Emulsion Polymerization: Synthesis Technology[J]. Journal of Natural Science of Hunan Normal University, 2006, 29(4): 62-67 |
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| Authors: | ZHANG Xin-ya SUN Zhi-juan FU He-qing HUANG Hong LAN Ren-hua CHEN Huan-qin |
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| Affiliation: | Research Institute of Chemical Engineering, South China University of Technology, Guangzhou, 510641, China |
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| Abstract: | Core-shell acrylate emulsion for zero VOC latex coatings with higher glass transition temperature(t_g) and lower minimal film-forming temperature (t_(MF)) is prepared by Gradual seeded Emulsion Polymerization and introducing hydrophilic functional monomers.The main influence factors such as emulsion polymerization technology,emulsifier,hydrophilic functional monomers and different ration of core/shell monomer to core-shell structure and t_(MF) of polymer particle are discussed.The experimental results show that typical core-shell structure acrylate emulsion with higher t_g and lower t_(MF) can be prepared by using gradual seeded emulsion polymerization.Hydrophilic functional monomer HPMA is effective to reduce the t_(MF) of emulsion and enhance the thaw-freezing stability and electronic stability. |
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| Keywords: | gradual emulsion polymerization core-shell emulsion minimum film-forming temperature glass transition temperature |
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