Industrial synthesis method for producing high water absorption resin

Abstract

The invention relates to an industrial synthesis method for producing absorbent resin. The method comprises the following steps: alkali liquor is used to neutralize acrylic acid; acrylamide is added into the reaction solution, is fully dissolved, is orderly added with starch and a catalyst for reaction at controlled temperature of between 30 and 40 DEG C for 30 to 60 minutes; a foam beater and a polymerizing agent are added into the mixture; the mixture is added into a polymerizing device for polymerization; and the polymerized semi-finished product is subjected to cooling, cutting, drying and crushing to obtain the finished product. The industrial synthesis method has the advantages of simple production process, short reaction period, less energy consumption, long product guarantee period, degradability, no pollution, low input cost and high profit value, and can produce the absorbent resin through self cross linking by utilizing heat released by chemical reaction without adding a cross-linking agent and heating on the basis of not introducing nitrogen at the prior normal pressure.

Description

Technical field: [0001] The invention relates to a production process of functional polymer materials in fine chemical industry, in particular to an industrial synthesis method for producing superabsorbent resin. Background technique: [0002] Superabsorbent resin is a new type of functional polymer material developed in the past 30 years. It has excellent water absorption and water retention properties. It can absorb water hundreds to thousands of times its own weight. Strong, loses little water even under high pressure. It can be widely used in fields such as agriculture, forestry, animal husbandry, medical and health care, petroleum, construction and food, but due to its complicated production process and high price, it has not been widely promoted. [0003] The traditional production process of superabsorbent resin is: mixing starch and water, blowing nitrogen, heating and gelatinizing. After cooling, under the protection of nitrogen, add ethylene monomer initiator and...

AI Technical Summary

Problems solved by technology

The disadvantages of this production process are: starch gelatinization requires heating, which wastes resources; the monomer concentration is low, the polymerization rate is slow, nitrogen gas is introduced for a long time, cross-linking agent is added and continuous heating makes the production cost high and the production process is complicated. , the reaction cycle is long so that the energy consumption is large and the production cost is high

However, both of these two production processes still need to add a crosslinking agent for crosslinking, and both require continuous heating, resulting in greater energy consumption and increased production costs.