Acrylic Pressure-Sensitive Adhesive with Fast and Efficient Electrical Debonding through the Use of Polar Aprotic Monomers

Adhesives are an indispensable part of manufacturing, as they provide a quick and easy solution for attaching and connecting parts. In some cases, however, adhesives are expected to debond quickly and easily without damaging the bonding interface. In this work, a series of acrylate-based electrically debondable pressure-sensitive adhesives (EDPSAs) whose adhesive properties can be controlled by direct current (DC) voltage were prepared by blending ionic liquids (ILs) and polymers. This work investigated the electrical debonding behaviors of these EDPSAs and explored the interactions between the polymer networks and ILs. The experimental results show that with the help of polar aprotic monomers, adhesives with a minimal content of ILs can also achieve debonding, while the stimulus conditions are safe and fast. The peeling force of samples decreased from 10 N/25 mm to less than 0.1 N/25 mm after 15 s of stimulus with a DC voltage of 10 V, representing a reduction of more than 99%. This process, which is safe and fast while causing little damage to the bonding interface, meets the current expectations of industrial manufacturing and has a high potential for applications in a variety of fields such as consumer electronics, the electronics industry, vehicle engineering, aerospace engineering, and building technology.