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 the preparation method of the water retaining agent, which utilizes waste flax residue or herb residue, and waste paper as raw materials. The invention solves the problems that, prior water retaining agents are hard to be degraded by soil microorganism; starch and corns are used as raw materials, so the cost is high; the anti-mould performance is bad. According to weight percentage, the water retaining agent comprises 8% to 17% cellulose which is extracted from the flax residue, the waste paper or the herb residue, 0.02% to 0.18% of initiator, 83% to 89% of monomer, and 0.06% to 0.4% of cross-linking agent. The preparation method is that: first, the cellulose is separated from flax residue or herb residue, dried, and ground into cellulose powder; second, the cellulose power is arranged in a four-mouth bottle, then add water, stir the mixture, pump in nitrogen, exhaust oxygen, and control reaction temperature; third, the initiator, the monometer and the cross-linking agent are added to react in nitrogen until the reaction liquid turns sticky; fourth, dry and grind the reaction solution, and the water retaining agent is prepared. The invention has the advantages of rich sources of raw materials, low cost, few types of used reagents among similar synthetic methods, and small pollution to the environment.

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 and / or traditional Chinese medicine dregs or 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-ab...

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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