Shumin Jiang , Hangzhou Wang , Jun Shi , Xiaobin Li , Xiaoyan Xiong , Chenguang Kong , Cunzhi Li , Youcheng Huang , Kun Wu , Li Yang
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引用次数: 0
Abstract
In the semiconductor precision device processing and wafer cutting industry, products are typically etched or sliced to meet specific requirements. During this process, a novel type of adhesive is often utilized for bonding and securing purposes. After processing, some methods, such as light exposure and thermal application, can be used to make the adhesive lose its adhesiveness, so as to facilitate the peeling of the product without damaging the product. In this work, acrylate prepolymers containing photopolymerization groups were synthesized from 4-acryloyloxybenzophenone (4-ABP) and other acrylic monomers. UV-induced tack-loss of the acrylate pressure-sensitive adhesive (PSA) was achieved by blending the acrylic prepolymer with a small molecule isocyanate compound in an appropriate ratio and then coating for heat curing. It was observed that the incorporation of multifunctional isocyanate small molecule groups can enhance the overall performance of the tape. An addition amount of 0.6 wt% hexamethylene diisocyanate (HDI) was found to be more suitable than isophorone diisocyanate (IPDI), as it maintained good bonding performance and resulted in less residual glue. The increase in 4-ABP initially led to an improvement in bonding performance of the pressure sensitive adhesive tape, followed by a decrease, with an optimal addition amount of 1.2 wt%. After UV curing, the 180° peel strength of the adhesive tape measured below 1.0 N/25 mm, exhibiting the most significant decrease in peel strength and minimal residual adhesive content. This characteristic categorized it as a UV-induced tack-loss easy peeling pressure-sensitive adhesive tape. These results contribute to the further research and development of UV-induced tack-loss PSA.
期刊介绍:
Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers.
Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.