Antibiotic degradable water retaining agent and preparation method thereof

A water-retaining agent, acrylic technology, applied in the field of antibacterial degradable water-retaining agent and its preparation, can solve the problems of affecting water absorption and water retention performance and service life, easy to mildew, etc. The effect of glue strength

Inactive Publication Date: 2016-05-04
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Under the condition of water bath, dissolve 20g of sodium alginate in deionized water, and then add partially neutralized acrylic acid (120g of acrylic acid reacted with 98.8g of ammonium bicarbonate to obtain 148g of acrylic acid with a neutralization degree of 75%), 40g of acrylamide, 70g of 10% octadecyl allyl dimethyl ammonium chloride, 0.12g of N,N-methylene bisacrylamide, stir until completely dissolved, then add 12.5g of kaolin, stir and raise the temperature of the water bath to 75°C, Add 20g of 10% ammonium persulfate and 20g of 10% sodium bisulfite, stir until the reaction solution thickens, let it stand for 2 hours, take it out, cut it into pieces, dry it in an oven at 80-100°C, crush it, and sieve it to obtain a water-retaining agent.

Embodiment 2

[0050] Under the condition of water bath, dissolve 20g of sodium alginate in deionized water, and then add partially neutralized acrylic acid (100g of acrylic acid reacted with 82.3g of ammonium bicarbonate to obtain 118g of acrylic acid with a neutralization degree of 75%), 60g of acrylamide, 70g of 10% octadecyl allyl dimethyl ammonium chloride, 0.12g of N,N-methylene bisacrylamide, stir until completely dissolved, then add 12.5g of kaolin, stir and raise the temperature of the water bath to 75°C, Add 20g of 10% ammonium persulfate and 20g of 10% sodium bisulfite, stir until the reaction solution thickens, let it stand for 2 hours, take it out, cut it into pieces, dry it in an oven at 80-100°C, crush it, and sieve it to obtain a water-retaining agent.

Embodiment 3

[0052] Under water bath conditions, dissolve 16g of sodium alginate in deionized water, and then add partially neutralized acrylic acid (110g of acrylic acid reacted with 106.7g of ammonium bicarbonate to obtain 129.9g of acrylic acid with a neutralization degree of 85%) and 30g of acrylamide , 10% dedecyl allyl dimethyl ammonium chloride 30g, 10% octadecyl allyl dimethyl ammonium chloride 60g, N,N-methylenebisacrylamide 0.08g, stir until completely Dissolve, then add 14.5g of kaolin, stir and raise the temperature of the water bath to 75°C, add 20g of 10% ammonium persulfate and 20g of 10% sodium bisulfite, stir until the reaction solution thickens, let it stand for 2 hours, take it out, and cut it into pieces , oven-dried at 80-100°C, crushed, and sieved to obtain a water-retaining agent.

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F220/56C08F220/34C08F222/38C08K3/34
Inventor 杜建军黄帮裕王新爱李永胜
Owner ZHONGKAI UNIV OF AGRI & ENG
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