摘要
采用原位聚合法,制备得到系列环氧树脂(E-44)改性的无溶剂阴离子聚氨酯/丙烯酸酯(WPUA)复合乳液。通过傅里叶红外光谱(FT-IR)、热失重分析(TGA)、耐介质性及力学性能测试讨论了E-44用量对WPUA乳液及其膜性能的影响。FTIR表明,E-44中的—OH和环氧基都参与了反应。TGA表明,E-44的加入明显改善了涂膜的热稳定性。另外当W(E-44)=7.6%时,涂膜吸水率为6.13%,吸乙醇率为49.78%,呈现良好耐介质性;且涂膜硬度可达2H,附着力达到0级,耐冲击性合格。
A series of solvent-free anion polyurethane/acrylate （WPUA）dispersions modified with epoxy resin （E-44）were successfully synthesized by in-situ emulsion polymerization.Effects of E-44 content on appear-ance,centrifugal stability of the dispersions were studied,as well as thermal properties,water and alcohol re-sistance,pencil hardness,adhesion and impact strength of the films.FT-IR demonstrated the hydroxyl and ep-oxy groups were reacted with isocyanate groups.TGA results indicated WPUA with the incorporation of E-44 had relatively higher thermostability.Additionally,the best properties of WPUA films was obtained at 7.6%E-44 content,while the water and alcohol resistance were 6.13% and 49.78%,respectively.The pencil hard-ness of film was 2 H,the adhesion reached 0 grade,and the impact strength met requirements.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2014年第2期73-76,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21204046)
陕西省青年基金资助项目(2010JQ6012)
陕西省教育厅专项资助项目(2010JQ440)
陕西科技大学学科人才培养资助项目(XSG2010011)
