Method for preparing high water absorbing resin in nutrition type for agricultural use

Abstract

This invention provides a method for preparing agricultural nutritious high absorption resin. The method adds nutritious substances such as diammonium hydrogen phosphate to the polymerization system, and forms composite in the presence of initiator and crosslinker, the water absorption rate of the agricultural nutritious high absorption resin is 200-500 times, and that of physiological saline is 30-80 times. The agricultural nutritious high absorption resin has has both water absorption and nutritious functions.

Description

technical field [0001] The invention belongs to the field of superabsorbent resins, in particular to a method for preparing agricultural nutritional superabsorbent resins Background technique [0002] Although the development and utilization of water retaining agent has only a history of more than 30 years, its development is very noticeable. Whether it is research on synthesis or application promotion, research is very active. There are starches, such as starch grafted acrylate, etc., and synthetics, such as polyacrylates, cellulose, etc., and the polymerization forms include aqueous solution polymerization, reversed phase suspension polymerization, etc. , The form of the product is powder, bead, film and fiber and so on. [0003] In the application of agriculture, due to the high cost of water-retaining agents, the application and promotion of water-retaining agents have been seriously hindered. Many domestic scientists have done a lot of work in reducing the cost of wate...

AI Technical Summary

Problems solved by technology

[0003] In the application of agriculture, due to the high cost of water-retaining agents, the application and promotion of water-retaining agents have been seriously hindered. Many domestic scientists have done a lot of work in reducing the cost of water-retaining agents, but most of the work is mainly concentrated on the polymerization system. Add cheap materials such as bentonite, kaolin and attapulgite and other inorganic soil minerals to achieve the purpose of reducing costs. Although adding some inorganic minerals can improve the hydrogel strength of the water-retaining material after absorbing water, the amount of water-retaining agent soil with good performance Low, can not fundamentally reduce the cost of raw materials

In addition, the product function only has the same water absorption and water release functions as ordinary water retaining agents