A kind of antifreeze conductive hydrogel and its preparation method and force response sensing application

Abstract

The invention belongs to the field of polymer material chemistry, and discloses an antifreeze conductive hydrogel and its preparation method and force response sensing application. The antifreeze conductive hydrogel includes the following components in mass percentage: butylene glycol 10 %‑30%, N‑hydroxyethylacrylamide 50%‑70%, photoinitiator 1%‑3%, crosslinker 0.1%‑0.3%, lithium chloride 1%‑7%, deionized water 9.7% ‑37.9%. The preparation method comprises the following steps: 1) adding lithium chloride, N-hydroxyethylacrylamide, butylene glycol, a cross-linking agent and a photoinitiator into deionized water, stirring evenly, and reacting to form a prepolymer solution; 2) adding The prepolymer solution is injected into the mold, and then transferred to a UV lamp for polymerization to form a gel. The invention overcomes the limitation that most traditional antifreeze gels are based on organic gels, and realizes the effect that the water-based gel has excellent antifreeze properties.

Description

A kind of antifreeze conductive hydrogel and its preparation method and force-responsive sensing application technical field The present invention relates to the field of polymer material chemistry, more specifically to a kind of antifreeze conductive hydrogel and preparation thereof. Preparation method and application of force-responsive sensing. Background technique Conductive gel is a three-dimensional polymer hydrogel with electrical conductivity, however, most of the hydrogel itself It is not conductive, and conductive fillers need to be filled in the hydrogel medium to achieve its conductive properties, and the gel contains a large amount of water, which crystallizes at low temperatures resulting in most conductive gels at sub-zero conditions due to the lack of antifreeze properties. Under these conditions, these conductive gels will lose their electrical conductivity or stretchability, which greatly limits their applications in smart sensing, smart driving a...

AI Technical Summary

Problems solved by technology

However, due to the limited types of conventional organic antifreeze solvents, the development and application of such gels are greatly restricted

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