Preparation method of ecological water-retaining agent

Abstract

The invention relates to the technical field of application of agricultural polymer materials, and specially relates to a preparation method of an ecological water-retaining agent, wherein a culture method is simple and easy to implement, and a culture medium adopted is wide in raw material source, low in cost, safe and reliable, and low in production cost. The preparation method comprises the following steps of: weighing the following raw materials by percentage: acrylic acid, diammonium hydrogen phosphate, citric acid, bentonite, glutamic acid, a glyceryl ether compound, hydrochloric acid and humic acid; conveying the raw materials into a modulation reactor, respectively, premixing the materials before polymerization, and conveying the premix into a polymerization reactor; introducing nitrogen into the mixture, adding ammonium persulfate salt, sodium hydrogen sulfite, methylene bisacrylamide and triethanolamine, and performing aging after polymerization; mixing the product with the mixture of functional material potassium fertilizer, nitrogen fertilizer and phosphorus fertilizer under catalysis of citric acid and hydrochloric acid and then conveying the mixture to a pelletizer, and crushing the mixture to 50 meshes, thereby obtaining the target product. The ecological water-retaining agent has a nutrition function in additional to the functions of absorbing water and releasing water and a normal saline absorption property, and also has saline-alkaline resistance.

Description

technical field [0001] The invention relates to the technical field of application of agricultural polymer materials, in particular to a preparation method of an ecological water-retaining agent. Background technique [0002] Water-retaining agent is a high-molecular polymer with super high water-absorbing capacity made of strong water-absorbing resin. points, and has the function of repeated absorption. When water exists, the water retaining agent can quickly absorb and store water, and when water is scarce, it can slowly release water for crops to absorb and utilize, reducing the repeated use of groundwater in agriculture. my country is not only short of water resources, but also the rationality of water resources utilization is still poor, coupled with irrational farming, resulting in the increasing desertification of land in our country, although many measures have been taken in resisting drought and saving water, 2 / 2 of the cultivated land area The third is low- and me...

AI Technical Summary

Problems solved by technology

[0003] At present, there are three main types of water-retaining agents, propylene-based water-retaining agents, starch-based water-retaining agents, and biopolymer-based water-retaining agents. The monomers of propylene-based water-retaining agents have certain toxicity, and a small amount of residual monomers will affect the safety of propylene-based water-retaining agents. The starch-based water-retaining agent has poor gel strength, heat resistance, and salt resistance, and it degrades too quickly, and the overall performance is single