期刊
REACTIVE & FUNCTIONAL POLYMERS
卷 71, 期 6, 页码 655-665出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.reactfunctpolym.2011.03.004
关键词
UV-curing; Polyurethane; Polycarbonate diol; Polydimethylsiloxane; Surface free energy
资金
- Ministry of Knowledge and Economy, Republic of Korea [10035163]
Hydroxy-terminated polydimethylsiloxane (PDMS) was incorporated into the soft segments of UV-curable polycarbonate-based polyurethane (meth)acrylate dispersions to improve the thermal property and surface property. 2-Hydroxymethacylate or pentaerythritol tri-acrylate was end-capped with or without PDMS to confirm the effect of the functionality of the end-capping group on the properties. Owing to the hydrophobicity of siloxane, the cured coating films containing PDMS had low surface free energy, and higher thermal degradation temperature. The functionality of the end-capping group had a slight effect on the surface and thermal properties. The UV-curing rate and final conversion depended strongly on the functionality. The glass transition temperature and the tensile strength of the cured films were increased by incorporating PDMS or increasing the functionality. Therefore, the weaknesses of waterborne UV-curable coatings can be alleviated by the incorporation of PDMS and high functionality. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据