▎ 摘　　要

NOVELTY - Photo-curing hydrogel comprises 30-50 pts. wt. ultra-violet water-absorbing resin, 10-20 pts. wt. oxidized graphene, 1-10 pts. wt. acrylamide, 1-10 pts. wt. polyethylene glycol dimethacrylate, 5-10 pts. wt. glycerol, 0.05-0.1 pts. wt. photoinitiator, 0.05-0.1 pts. wt. light absorbent, 55-60 pts. wt. pure water, 1-5 pts. wt. grape seed oil, 1-10 pts. wt. allantoin, 1-5 pts. wt. madecassoside and sodium carboxymethyl cellulose. USE - The photo-curing hydrogel is useful for ultra-violet light curing and as adsorption material for absorbing heavy metal ion. ADVANTAGE - The photo-curing hydrogel: saves time; reduces labor intensity; improves the production efficacy; and has good water absorption, high curing efficiency, high breaking elongation and breaking strength, and better recovery effect at high temperature. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing photo-curing hydrogel, comprising (i) feeding nitrogen into the reaction kettle, using nitrogen to replace the oxygen in the reaction kettle before the reaction, and preheating the reaction kettle at the same time at 20℃ for 3 minutes; (ii) adding the UV water-absorbing resin and glycerol into the reaction kettle and stirring for 5-10 minutes; (iii) adding the photoinitiator, the light absorbent and the pure water continuously into the reaction kettle, and stirring for 10-15 minutes; (iv) adding grapeseed oil, allantoin, madecassoside and sodium carboxymethylcellulose into the reaction kettle, and stirring for 15-25 minutes to obtain a hydrogel; and (v) copolymerizing acrylamide and polyethylene glycol dimethacrylate to obtain the amino group on the side chain of the polyacrylamide segment of the copolymer and the oxygen-containing functional group on the surface of graphene oxide are cross-linked by hydrogen bonds to form the first cross-linking system, where α-cyclodextrin is hydrophobic due to the inner cavity strung on the side chain of the polyethylene glycol dimethacrylate segment to form a rotaxane structure, crosslinking the rotaxane through hydrogen bonds to form a second cross-linked system, using a transmission device to transport the hydrogel and an ultra-violet lamp tube for ultra-violet curing of the hydrogel, and using a ventilation device to ventilate the surroundings to obtain a ultra-violet light-cured hydrogel.