| 示差扫描量热法研究水性聚氨酯的微相分离 |
| |
| 引用本文： | 李树材,陈维涛.示差扫描量热法研究水性聚氨酯的微相分离[J].天津科技大学学报,2005,20(1):27-29. |
| |
| 作者姓名： | 李树材 陈维涛 |
| |
| 作者单位： | 天津科技大学材料科学与化学工程学院,天津,300222 |
| |
| 摘 要： | 合成了一系列水性聚氨酯，考察了软段组成、二羟甲基丙酸(DMPA)含量及不同NCO／OH比值对产物微相分离的影响。实验结果表明：聚醚型水性聚氨酯的微相分离程度高于聚酯型水性聚氨酯。提高DMPA用量，软段玻璃化温度移向低温区，说明体系的微相分离程度加大。随着NCO／OH比值的增大，软段玻璃化温度也移向低温，软硬段的微相分离程度增大。
|
| 关 键 词： | 水性聚氨酯 微相分离 软段 硬段 |
| 文章编号： | 1672-6510(2005)01-0027-03 |
| 修稿时间： | 2004年9月1日 |
Study on Microphase Separation of Waterborne Polyurethane by DSC |
| |
| LI Shu-cai,CHEN Wei-tao.Study on Microphase Separation of Waterborne Polyurethane by DSC[J].Journal of Tianjin University of Science & Technology,2005,20(1):27-29. |
| |
| Authors: | LI Shu-cai CHEN Wei-tao |
| |
| Abstract: | Several waterborne polyurethanes were prepared. The influence factors on microphase separation of waterborne polyurethane were studied, including soft segment type, DMPA content and different NCO/OH ratio. The results indicated that the microphase separation degree of polyether-type waterborne polyurethanes was higher than that of polyester-type waterborne polyurethanes. The increase of DMPA amount was related with a lower glass transition temperature, which resulted in higher level microphase separation. At the meantime, the level of microphase separation increased with the increasing of the NCO/OH ratio. |
| |
| Keywords: | waterborne polyurethane microphase separation soft segment hard segment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
