Preparation method of flexible hydrogel material

The invention provides a preparation method of a flexible hydrogel material. In a first freezing and thawing treatment process, polyvinyl alcohol and a hydrogel toughening agent can be subjected to physical crosslinking to form conductive hydrogel with a three-dimensional network structure; graphene oxide is bonded with the conductive hydrogel with an electrostatic spinning method, and conductive-electrically induced heating hydrogel is formed; a sol mixture is used as an electrically induced deformation material, the conductive-electrically induced heating hydrogel and the sol mixture can besubjected to physical crosslinking to be bonded together in a second freezing and thawing treatment process, and finally, the flexible hydrogel material is formed. The flexible hydrogel material has high mechanical strength, can realize electric actuation and cyclic actuation under mild conditions, and can be used for preparing flexible elements of electrical appliances. 本发明提供了种柔性水凝胶材料的制备方法。在本发明中，在第冷冻-解冻处理过程中，聚乙烯醇与水凝胶增韧剂会