| abstract |
The invention discloses an anti-freezing conductive hydrogel for photocuring 3D printing and a preparation method thereof, wherein the anti-freezing conductive hydrogel comprises the following components in percentage by mass: 10-40% of acrylamide, 0.1-10% of cross-linking agent, 30-80% of distilled water, 10-70% of low freezing point medium, 2-40% of metal salt, 0.5-8% of nano inorganic particles, 0.5-4% of photoinitiator and 0.01-2% of light absorber. The low freezing point medium in the anti-freezing conductive hydrogel for photocuring 3D printing can generate strong hydrogen bond action with water, so that the water is stably fixed in a hydrogel three-dimensional network and is not easy to freeze and freeze; the metal salt endows the hydrogel with conductivity, and simultaneously, the anti-freezing performance of the hydrogel is further improved; in addition, the nano inorganic particles can improve the strength of the hydrogel. The hydrogel is simple in preparation method, is manufactured by a photocuring 3D printing technology, has a huge application prospect in the fields of low-temperature flexible sensors, low-temperature capacitors and the like, and can be applied to acquisition of biological signals at extreme temperatures. |