Water-loss reducer using waste pouce or Chinese medicine slag and wastepaper as raw material, and production method thereof

Abstract

The invention relates to a water-retaining agent and a preparation method using discarded flax scraps or traditional Chinese medicine slag and waste paper as raw materials, and relates to a water-retaining agent and a preparation method thereof. It solves the problems that the existing water-retaining agent is difficult to be degraded by soil microorganisms, the cost of using starch and corn as raw materials is high, and the anti-mold performance is poor. The water-retaining agent of the present invention contains 8-17% of cellulose extracted from flax chips, waste paper or traditional Chinese medicine dregs, 0.02-0.18% of initiator, 83-89% of monomer, and 0.06-89% of cross-linking agent according to the percentage by weight. 0.4%. The preparation method is as follows: 1. Separate cellulose from flax scraps or traditional Chinese medicine residue, dry and crush it into cellulose powder; 2. Put the cellulose powder into a four-necked bottle, add water, stir, introduce nitrogen, and exhaust oxygen 1. Control the reaction temperature; 3. Add initiator, monomer and cross-linking agent, and react under nitrogen until the reaction liquid becomes viscous; 4. Dry and pulverize to obtain the water-retaining agent. The present invention has abundant raw material resources, low cost, few types of reagents used in similar synthesis methods, and little environmental pollution.

Description

technical field [0001] The invention relates to a water-retaining agent and a preparation method thereof, in particular to a water-retaining agent using flax scraps or traditional Chinese medicine residue and waste paper as raw materials and a preparation method thereof. Background technique [0002] In our country, there are a large amount of waste resources such as flax scraps, waste paper or traditional Chinese medicine residues every year. These waste resources contain a lot of cellulose. For example, the chemical composition of flax scraps is close to that of poplar, and the cellulose content is about 48%. In addition to ink and some additives in paper, the main component is also cellulose. At present, the method for preparing synthetic water-absorbing and water-retaining agents is to initiate chains first, then extend chains, and finally terminate chains, and cross-link with cross-linking agents to form a slightly cross-linked network structure. The existing water-abs...

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that the existing synthetic water-absorbing and water-retaining agent is difficult to be degraded by soil microorganisms, and the starch is extracted from crops such as potatoes and corn, which has high cost and poor anti-mold performance.

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