Antibiotic degradable water retaining agent and preparation method thereof

Abstract

The invention belongs to the field of polymer materials, and concretely discloses an antibiotic degradable water retaining agent and a preparation method thereof. The water retaining agent is prepared from acrylic acid, acrylamide, long-chain quaternary ammonium salt, kaolin and sodium alginate through a redox system aqueous solution polymerization technology with ammonium persulfate or potassium persulfate as an oxidant, sodium bisulfite as a reducing agent and N,N-methylenebisacrylamide as a cross-linking agent. Acrylic acid is neutralized with ammonia water or ammonium bicarbonate, so the problem of soil hardening induced by long-term application of a sodium base water retaining agent to soil is avoided, and nutrients are provided. Kaolin with low price and wide sources and biodegradable sodium alginate are introduced to a copolymerization system, so the preparation cost of the water retaining agent is effectively reduced, and the gelly strength, the water absorption rate, the salt resistance and the biodegradability of the water retaining agent are improved. A wide-spectrum antibiosis material is also introduced, so storage of the degradable water retaining and further prolongation of the service life of the water retaining agent are facilitated. The antibiotic degradable water retaining agent can be widely applied in the fields of agriculture, forestry, gardening, ecologic construction and desert treatment.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an antibacterial degradable water retention agent and a preparation method thereof. Background technique [0002] Water retaining agent is a kind of strong hydrophilic polymer containing hydrophilic groups and three-dimensional network structure, which can absorb water tens or even thousands of times its own weight, and it is not easy to lose water even under pressurized conditions. Good water absorption and water retention performance, and can slowly release water for plant absorption and utilization, can enhance soil water retention, improve soil structure, improve water and fertilizer utilization efficiency, and are widely used in agriculture, forestry and urban greening and other fields. [0003] At present, water retaining agents can generally be divided into two categories: synthetic series water retaining agents and natural and modified polymer water retaining agents. Syn...

AI Technical Summary

Problems solved by technology

[0004] Natural and modified polymer water-retaining agents use bio-based materials as raw materials, have a wide range of sources, are cheap and high-quality, and are biodegradable. However, due to the structure of their biomass-based materials, the product is prone to mildew during storage. It is easier to degrade during use, thus affecting its own water absorption and water retention performance and service life