您的位置:首页  > 论文页面

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:1163  下载量:590
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.
 
0 评论数 0
暂无评论
友情链接