Water-retaining agent and manufacture method thereof

Abstract

The invention provides a water-retaining agent and a manufacture method thereof. The method is characterized by comprising the following steps: adding a few amount of low-concentration potassium hydroxide solution into an acrylic acid aqueous solution for neutralization, neutralizing with ammonium carbonate, controlling neutralization degree of acrylic acid to 70-75%, adding acrylamide, a cross-linking agent N,N'-methylene bisacrylamide, an inducer potassium persulphate and potassium sulfite to carry out normal-temperature synthesis, mixing with a rooting agent naphthylacetic acid and an anti-bacteria agent Xitujunke and granulating, and drying. During the whole synthesis, potassium and ammonium ion compounds which are beneficial to plants are adopted; by normal-temperature synthesis, energy consumption is saved; the process is safe and reaction time is short; and the preparation method is simple, and the prepared water-retaining agent has advantages of large molecular weight, less powder, fast water absorption speed, good water retention and antibacterial and root-promoting effects.

Description

technical field [0001] The invention relates to a water retaining agent and a preparation method thereof, belonging to the technical field of agricultural production. Background technique: [0002] Drought has the characteristics of high frequency, long duration and wide range. The frequent occurrence and long-term persistence of drought will not only bring huge losses to the social economy, especially agricultural production, but also cause many ecological and environmental adverse effects such as water shortages, intensified desertification, and frequent sandstorms. From 2000 to 2015, the average annual drought-affected area in my country was 21.22 million hectares, accounting for about 60% of the area affected by various meteorological disasters. [0003] Water-retaining agent, also known as water-absorbing agent, moisture-retaining agent, jelly for agriculture and forestry, hydrated soil, soil conditioner, polywater glue, etc. in agriculture and forestry, is a general t...

AI Technical Summary

Problems solved by technology

The polymerization method of acrylic acid as a raw material under low-temperature cooling conditions is usually to dissolve acrylic acid, acrylamide, and crosslinking agent N, N'-methylenebisacrylamide neutralized by sodium hydroxide in water, and react with an inducer Prepared, in which acrylic acid is neutralized with a strong base, a large amount of heat will be released during the reaction process, and it needs to be cooled with water, which greatly increases the production cost. Drying consumes a lot of energy and produces a lot of fine powder of water-retaining agent, which is reflected in the increase of the water solubility of the gel after water absorption, and the water absorption performance is 24-200 times of its own total amount; at the same time, it is found that during the application process, sodium ions will affect the soil. have adverse effects

Water-retaining agents are ubiquitous and easy to breed microorganisms, which can easily rot the roots of plants and pose a fatal threat to plant growth.

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