Preparation of absorbent resin and MCM-41 molecular sieve composite material

Abstract

The invention relates to the preparation of a water-absorbing resin complex material, in particular to the preparation of a novel water-absorbing material with complex functions which is obtained from the compound of water-absorbing resin and an MCM-41 molecular sieve. The method comprises the following steps: the MCM-41 molecular sieve is subjected to organic processing; an acrylic acid is taken as a raw material; the pH value is regulated by NaOH till 60 percent to 80 percent of neutralization degree; then deionized water is added for dilution, and then put into a high-pressure reaction kettle; acrylamide, a cross-linking agent, an initiator and the MCM-41 molecular sieve are added in sequence for carrying out polymerization under the protection of nitrogen; and a product is dried so as to obtain the complex material of the water-absorbing resin and the MCM-41 molecular sieve. The complex material of the water-absorbing resin and the MCM-41 molecular sieve have good absorption capacity to water containing organic pollutants, and can realize the effect of concentration of pollutants; and furthermore, the regular structure of the molecular sieve causes the reuse times of the water-absorbing resin to be greatly improved, compared with the reuse times before compound, thereby reducing manufacturing cost of water processing, i.e., greatly improving the economic practicability of the application of the water-absorbing resin in water processing.

Description

technical field [0001] The invention relates to the preparation of a water-absorbing resin composite material, in particular to the preparation of a novel water-absorbing material with composite function obtained by compounding the water-absorbing resin and MCM-41 molecular sieve. Background technique [0002] Water-absorbent resin, also known as super-absorbent, is a new type of functional polymer material with a three-dimensional cross-linked network structure. It can quickly absorb liquid water dozens or even thousands of times its own weight through hydration and become a gel. It has good water retention and has been widely used in many fields such as medical and health care, building materials, agriculture, forestry and gardening, food industry, petrochemical industry and environmental protection. It can be seen that the water-absorbing resin is a functional polymer material with development potential. However, this type of material still needs to solve three major pro...

AI Technical Summary

Problems solved by technology

However, this type of material still needs to solve three major problems: namely, to reduce the cost, improve the gel strength of water absorption, and improve the salt resistance of the gel

[0003] Traditional superabsorbent resins mainly use acrylic acid and acrylamide as raw materials, which have disadvantages such as high cost, poor salt resistance, and low gel strength.

Binary or ternary polymers can improve their performance, but the production cost is high

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