摘要： 【目的】解决胶膜剥离效果差、残胶多及合成监控难等问题。【方法】以丙烯酸丁酯（BA）、丙烯酸 .2-乙基己酯（ 2-EHA）、甲基丙烯酸羟乙酯（ HEMA）为原料，通过自由基聚合制备羟基丙烯酸酯预聚物，用甲基丙烯酸异氰基乙酯（IEM）接枝引入可光聚合双键，开发 UV光致可剥离胶膜。采用智能插座实时监测搅拌器电流以跟踪反应体系黏度变化，对比一锅法与滴加法的电流曲线，以红外光谱法监测— NCO与— OH的接枝反应。涂布成膜后测试胶膜剥离力。【结果】当采用慢滴加法工艺、 HEMA接枝量为 15%时， 25 mm宽的胶膜经 UV辐照 60 s后， 180°剥离力由 13. 23 N降至 0. 16 N，玻璃化转变温度（T_g）由辐照前的 .42. 45 ℃上升至 3. 98 ℃，且残胶减少。【结论】采用智能插座监测搅拌器电流可实现低成本实时监控凝胶风险。采用慢滴加法且 HEMA接枝量为 15%时，所得胶膜经 UV辐照后剥离力骤降且无残胶。光固化诱导的玻璃化转变和体积收缩是其主要减黏机制，该策略为制备高性能光致可剥离胶膜提供了一种简便可控的工艺路径。

关键词:  , UV光致可剥离胶膜；滴加法；在线电流监测；甲基丙烯酸异氰基乙酯；光固化

Abstract: ［Objective］This study aims to solve the issues of poor peeling performance，excessive residual adhesive and difficult monitoring during the synthesis process of adhesive film.［Methods］ Hydroxyl-containing acrylate prepolymers were prepared via free radical polymerization using butylacrylate（BA）， 2-ethylhexyl acrylate（2-EHA）， and 2-hydroxyethyl methacrylate（HEMA） as raw materials，followed by grafting photopolymerizable double bonds with 2-isocyanatoethyl methacrylate（IEM）to the prepolymer. An intelligent socket was employed to monitor stirrer current in real-time fortracking viscosity changes in the reaction system，with current curves compared between one-pot and dropwise addition methods. The grafting reaction between isocyanate and hydroxyl groups was monitored using infrared spectroscopy. The peel force of the adhesive films was measured after coatingand film formation.［Results］ Under the slow dropwise addition conditions with a HEMA grafting amount of 15%，the 180° peel force of the 25 mm-wide adhesive film decreased from 13. 23 N to 0. 16 Nafter 60 s of UV irradiation，while the glass transition temperature（T_g）increased from-42. 45 ℃ before irradiation to 3. 98 ℃，with reduced residual adhesive.［Conclusion］The use of intelligent socket tomonitor stirrer current provides a low-cost means for real-time gelation risk detection. With 15% HEMA grafting via the slow dropwise addition method，the obtained film displayed a dramatic drop inpeel force after UV exposure and was free of residual adhesive. The primary mechanisms for adhesionreduction are glass transition and volume shrinkage arising from photocrosslinking. This strategy offers asimple and controllable approach to fabricating high performance UV-triggered peelable adhesive films.

Key words: UV-triggered peelable adhesive film, dropwise addition method, online current monitoring, 2-isocyanatoethyl methacrylate, photocuring

中图分类号: 

• TQ637. 83