▎ 摘　　要

NOVELTY - High-strength antifreeze-type three-dimensional porous hydrogel adsorption material comprises 20-24 pts. wt. acrylamide, 36-55 pts. wt. acrylic acid, 1-2 pts. wt. composite initiator, 2-4 pts. wt. antifreeze, 1-1.5 pts. wt. cross-linking agent, 3-5.5 pts. wt. carboxylated graphene, 10-15 pts. wt. chitosan and 8-12 pts. wt. degummed silk protein. USE - High-strength antifreeze-type three-dimensional porous hydrogel adsorption material. ADVANTAGE - The high-strength antifreeze-type three-dimensional porous hydrogel adsorption material has excellent tensile strength and elastic modulus, and also enhances the elastic expansion performance and breaking strength of the hydrogel adsorption material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is inlcuded for a method for preparing high-strength antifreeze-type three-dimensional porous hydrogel adsorption material, which involves: (A) adding 20-24 pts. wt. of acrylamide, 36-55 pts. wt. of acrylic acid, 2-4 pts. wt. of antifreeze, and 3-5.5 pts. wt. of carboxylated graphene to the solvent of distilled water, and sonicate the solution at 50-60 degrees C for 2-3 hours, ultrasonic frequency is 20-22 kilo hertz, then adding 1-2 pts. wt. composite initiator and 1-1.5 pts. wt. crosslinker N, N-methylenebisacrylamide, heat the solution to 70-80 degrees C, and reacting for 6-8 hours, cooling the solution to room temperature, filtering, washing the solid product, and drying to prepare a poly (acrylamide-acrylic acid) copolymer; (B) adding sulfuric acid solution to the ethylene glycol solvent, adjusting the pH of the solution to 3-4; (C) adding 10-15 pts. wt. of chitosan and the poly (acrylamide-acrylic acid) copolymer transferring into a hydrothermal reactor, heating at 160-170 degrees C, reacting for 10-15 hours, cooling the solution to room temperature, removing the solvent through a high-speed centrifuge, wash the solid product, and drying to prepare a polychitosan grafted (acrylamide-acrylic acid) copolymer; (D) adding 8-12 pts. wt. of degummed silk protein to the ethanol solvent and obtained polychitosan grafted (acrylamide-acrylic acid) copolymer, and sonicating the solution at 35-45 degrees C and performing disperse treatment for 3-4 hours, where ultrasonic frequency is 20-22 kilo hertz, putting the solution in an oven and heating it to 60-70 degrees C; and (E) preparing polychitosan grafted (acrylamide-acrylic acid) copolymer-silk protein composite material by slowly drying ethanol to obtain a high-strength antifreeze type three-dimensional porous hydrogel adsorption material.