Synthesis method of water-absorbent resin with novel structure

Abstract

The invention discloses a synthesis method of water-absorbent resin with a novel structure. The synthesis method is characterized by comprising, by weight, 200-300 parts of acrylic acid, 1-5 parts of cross-linking agents, 700-800 parts of deionized water, 0.5-2 parts of oxidation reduction initiating agents, 50-80 parts of octylene glycol, 10-80 parts of ethyl alcohol, 5-15 parts of butanediol diglycidyl ether, 20-40 parts of aluminum sulfate, 2-5 parts of silicon dioxide and sodium hydroxide solution. According to the synthesis method, the acrylic acid is firstly polymerized at the indoor temperature and then neutralized by the aid of the sodium hydroxide solution, triple cross-linking treatment of the surface is performed, so that the water-absorbent resin has high gel intensity and pressurizing absorption capacity, good liquid passing performance and water retention capacity and fundamentally solves the problem that gel intensity and absorption ratio cannot be completely considered, and the synthesized water-absorbent resin is quite excellent in performance and has high infiltration speed, super-low reverse osmosis and super-dry and comfortable surfaces when being applied to paper diapers.

Description

technical field

[0001] The invention relates to the field of polymerized functional polymer chemical additives, in particular to a method for synthesizing a water-absorbing resin with a novel structure. Background technique

[0002] Water-absorbent resin is a polymer with a three-dimensional network structure. If the grid is large and the molecular freedom is large, the water absorption ratio will be higher. The pressurized absorption rate and liquid permeability will also be relatively poor, so the water absorption rate and gel strength are a pair of contradictions that cannot be achieved at the same time. Most of the water-absorbent resins on the market currently have this problem. At present, when water-absorbent resins are applied to daily hygiene products such as women's sanitary napkins, baby diapers, and adult incontinence diapers, especially when applied to baby diapers, the requirements for surface dryness are getting higher and higher. Contents of the invention ...