| abstract |
The invention belongs to the field of pressure-sensitive materials, in particular to a high-sensitivity flexible pressure-sensing material in pure water and an application thereof. The sensing material is prepared by the following method: adding a crosslinking agent to an aqueous solution of an ethylenic monomer containing zwitterions, dissolving by ultrasonic, and finally adding a thermal initiator and accelerator, and fully stirring to obtain a pre-reaction solution; The solution was added between two glass slides and then polymerized to ensure that the reaction was sufficient to obtain a hydrogel. The present application provides a zwitterionic hydrogel, which, when subjected to external pressure, attracts each other between positive and negative charged groups, which will have a strong solvation effect on water molecules, resulting in ionization of water molecules to generate free ions, so that the The material has higher pressure response sensitivity and achieves high-sensitivity sensing in pure water for the first time. |