摘要
由KH-570水解缩合制备甲基丙烯酰氧基丙基笼型倍半硅氧烷(MAP-POSS),并将其与不饱和环氧树脂组成自由基-阳离子混杂光固化体系。用红外光谱(FT-IR)表征固化过程特征吸收峰的变化;测试MAP-POSS含量对固化膜表面水接触角、硅元素分布以及涂膜力学性能、热性能的影响。结果表明:MAP-POSS的加入增加了体系的交联度,提高了涂膜的疏水性、热稳定性和玻璃化温度(Tg)。当MAP-POSS含量为12%(质量分数,下同)时,Tg增加了16.9℃。当MAP-POSS含量为15%时,涂膜对水的接触角由58.0°增大到94.2°。MAP-POSS的加入使涂膜的冲击强度先增加后减小。
The methyl acryloyloxy propyl silsesquioxane（MAP-POSS） was prepared by hydrolysis con-densation of KH-570, and composing free radical-cationic hybrid UV curing system with the unsatu-rated epoxy resin. The changes of characteristic absorption peak in the curing process was character-ized by using infrared spectroscopy （FT-IR） , and the influence of MAP-POSS content on the surface water contact angle, silicon elements distribution, mechanical properties and thermal performance of UV-cured film was investigated. The results show that with the addition of MAP-POSS the crosslink-ing degree, hydrophobicity, thermal stability and glass transition temperature（Tg） of the film are im-proved. When the content of MAP-POSS is 12% （mass fraction, the same below） , Tg is increased by 16. 9℃. When the MAP-POSS content is 15 % , the water contact angle of film is increased from 58. 0° to 94. 2°. The impact strength is improved firstly and then decreased with the addition of MAP-POSS.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2017年第8期49-54,共6页
Journal of Materials Engineering
基金
国家自然科学青年基金项目(21301048)
河北省自然科学青年基金项目(E2015209264)
华北理工大学培育基金项目(SP201515)
关键词
紫外光固化
自由基-阳离子混杂固化
笼型聚倍半硅氧烷
不饱和环氧树脂
ultraviolet light curing
free radical-cationic hybrid curing
polyhedral oligomeric silsesqui- oxane
unsaturated epoxy resin
