| 环氧树脂微胶囊的制备研究 |
| |
| 引用本文： | 方雷,石光,李国明,傅和清. 环氧树脂微胶囊的制备研究[J]. 中国胶粘剂, 2005, 14(11): 9-12 |
| |
| 作者姓名： | 方雷 石光 李国明 傅和清 |
| |
| 作者单位： | 1. 华南师范大学化学系,广东省,广州市,510631
2. 华南理工大学化工研究所,广东省,广州市,510640 |
| |
| 摘 要： | 以脲醛树脂为壁材,E-51环氧树脂为囊芯,通过原位聚合法制备了环氧树脂微胶囊。探讨了反应过程中脲醛量比及反应温度、体系pH值、搅拌速度等实验条件对微胶囊表面形貌、结构、粒径及其分布和包封率的影响。并通过多种方法对微胶囊进行了检测和表征,在此基础上提出了制备环氧树脂微胶囊的最佳反应条件:n(尿素):n(甲醛)=1:2．0,以NH4Cl为酸性催化剂,催化剂分批加入,酸化3h,终点pH为2．0,反应温度70℃,搅拌转速450r／min,固化2h。
|
| 关 键 词： | 原位聚合 微胶囊 环氧树脂 脲醛树脂 |
| 文章编号： | 1004-2849（2005）11-0009-04 |
| 收稿时间： | 2005-06-09 |
| 修稿时间： | 2005-06-09 |
Preparation and research of epoxy resin microcapsules |
| |
| FANG Lei,SHI Guang,LI Guo-ming,FU He-qing. Preparation and research of epoxy resin microcapsules[J]. China Adhesives, 2005, 14(11): 9-12 |
| |
| Authors: | FANG Lei SHI Guang LI Guo-ming FU He-qing |
| |
| Affiliation: | 1.Department of Chemistry,South China Normal University,Guangzhou 510631 ,China; 2.Institute of Chemical Engineering of South China University of Technology,Guangzhou 510640,China |
| |
| Abstract: | Microcapsules were prepared by the method of in situ polymerization with urea- formaldehyde resin as the outer membrane and epoxy resin as core material. The effect of reaction parameters on surface configuration, structure, particle size and distribution and the degree of microcapsulation were investigated including the effects of molar ratio of urea to formaldehyde, reaction temperature, pH of reaction system and stir velocity. Optimal conditions can be summarized as: n(urea):n(formaldehyde)is 1:2.0, acidification time is 3h,end point pH is 2.0,curing time is 2h with ammonium chloride as acid catalyst,reaction temperature is about 70 ℃ and stir velocity is about 450r/min. |
| |
| Keywords: | in situ polymerization microcapsule epoxy resin urea-formaldehyde resin |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
