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N-甲基苯胺封闭水性 HDI 胶束合成及其表征
发表时间：2016-09-30 浏览量：1544 下载量：804
| 全部作者： | 孙继鹏，曹欣欣，卢梦珂，岳剑锋，苏 尧， 刘 丹，顾继友，李志国 |
| 作者单位： | 东北林业大学材料科学与工程学 |
| 摘 要： | 以六亚甲基二异氰酸酯（HDI）、聚乙二醇1000（PEG1000）为基本原料，二羟甲基丙酸（DMPA）为扩链剂，采用N-甲基苯胺作为封闭剂成功制备出封闭的水性聚氨酯胶束，并对封闭水性胶束的解封闭性能以及胶体稳定性进行研究。通过调控物质的量比（即R值）以及DMPA含量，对胶束解封特性、黏度、稳定性、粒径等进行系统研究。实验结果表明，以N-甲基苯胺为封闭剂成功实现了对端异氰酸酯基（—NCO）的封闭，解封温度在100℃左右；当R=2.2，DMPA含量=6%时，胶束平均粒径为28 nm，多分散系数（PDI pdydispersity）为0.256，制备的乳液颜色为浅黄色透明，储存期达6个月以上。 |
| 关 键 词： | 复合材料；水性聚氨酯；胶束；解封闭；稳定性 |
| Title： | Synthesis and characterization of water-borne blocked HDI micelles with N-methylaniline |
| Author： | SUN Jipeng, CAO Xinxin, LU Mengke, YUE Jianfeng, SU Yao, LIU Dan, GU Jiyou, LI Zhiguo |
| Organization： | Material Science and Engineering College, Northeast Forestry University |
| Abstract： | In this paper, the water-borne polyurethane micelles blocked by N-methylaniline had been successfully synthesized with hexamethylene diisocyanate (HDI) and polyethylene glycol 1000 (PEG1000) as raw materials, and dimethylolpropionic acid (DMPA) as chain extender. The de-blocking performance and colloidal stability of the prepared micelles had been investigated. Moreover, the effect of R-value and DMPA content on de-blocking property, viscosity, stability and particle size had also been discussed. The experimental results showed that the de-blocking temperature of the blocked polyurethane micelles was 100℃. When R=2.2, DMPA=6% the particle size and corresponding polydispersity index was 28 nm and 0.256, respectively. Meanwhile, the prepared emulsion was translucent and pale yellow liquid, which can be stable for more than 6 months. |
| Key words： | composite material; water-borne polyurethane; micelles; de-blocking; stability |
| 发表期数： | 2016年9月第18期 |
| 引用格式： | 孙继鹏，曹欣欣，卢梦珂，等. N-甲基苯胺封闭水性 HDI 胶束合成及其表征[J]. 中国科技论文在线精品论文，2016，9（18）：1850-1857. |
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