Preparation method of farm-oriented water retaining agent using waste paper craps as raw materials

Abstract

The invention discloses a preparation method of a farm-oriented water retaining agent using waste paper craps as raw materials. By using the waste paper craps as raw materials, the recycle of the domestic waste is realized and the pollution to the environment is reduced; at the same time, the paper craps which are rich in vitamin can be biologically degraded, so that the further pollution to the soil is prevented. According to the preparation method, the water retaining agent is produced via microwave radiation, so that the progress of the chemical reaction is greatly accelerated and the reaction time is shortened. The main synthesis principle of a cellulose water retaining agent is to trigger polymerization by free radicals, and the specific progress comprises the steps of enabling cellulose macromolecules to generate free radicals and then reacting with monomers to form grafted copolymers. By using the microwave radiation triggering method, the progress of the chemical reaction can be accelerated and relatively good grafting effect can be achieved in relatively short time.

Description

technical field [0001] The invention mainly relates to the field of water-retaining agents, in particular to a preparation method of an agricultural water-retaining agent using waste paper scraps as raw materials. Background technique [0002] Water-retaining agent, also known as superabsorbent resin or superabsorbent polymer, is a high-molecular polymer containing strong hydrophilic groups such as hydroxyl and carboxyl, and has a certain degree of water swelling and cross-linking. It can quickly absorb water ten times, hundreds or even thousand times heavier than itself through hydration, or dozens of parts of salt solution and form a gel. Mixing water-retaining agent with soil and distributing it in the farmland can absorb a large amount of rainwater and irrigation water and slowly release the water absorbed by crops. It can not only improve the soil structure and physical and chemical properties, but also reduce the loss of soil water and nutrients, and promote the gr...

AI Technical Summary

Problems solved by technology

However, these types of water retaining agents have certain defects, such as complicated preparation operations, difficult control, poor heat resistance, unsuitable for long-term storage or high production costs, low biodegradation rate, and easy to cause environmental pollution