Starch graft acrylic acid/modified verdelite high-water-absorption resin and preparing method thereof

A superabsorbent resin and starch grafting technology, which is applied in the field of superabsorbent resin and its preparation, can solve the problems of poor salt tolerance, poor thermal stability, and low water absorption rate of the product, and achieve stable reaction, good thermal stability, and water absorption rate. Improved effect
CN101319031AInactive Publication Date: 2008-12-10HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2008-12-10
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a starch-grafted acrylic acid / modified tourmaline super absorbent polymer and a preparation method thereof, which relates to the super absorbent polymer and the preparation method thereof. The method solves the problems of complex technique, high cost, poor saline tolerance of products, low jelly strength, low water-absorption rate and poor thermal stability in the prior method for compounding inorganic mineral and the starch-grafted super absorbent polymer. The starch-grafted acrylic acid / modified tourmaline super absorbent polymer is prepared by a vinyl monomer, starch, a crosslinking agent, an initiator, modified tourmaline powder and deionized water. The method comprises the following steps: firstly, compositions required are weighed and taken; and secondly, the starch is pasted, added with the vinyl monomer and the modified tourmaline powder, and then added with the initiator and the crosslinking agent, and the starch-grafted acrylic acid / modified tourmaline super absorbent polymer is prepared after reaction, drying and crushing. The method has a simple and convenient technique and low cost; the saline tolerance of products prepared is good; the jelly strength is high; the water-absorption rate is improved by 10 percent; and the thermal stability is good at a temperature between 200 and 300 DEG C.
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Description

technical field

[0001] The invention relates to a superabsorbent resin and a preparation method thereof. Background technique

[0002] Starch-grafted superabsorbent resins are widely used in medical and health care, agriculture, forestry, gardening, petrochemicals, daily chemicals, construction and other fields. With the development of science, starch-grafted superabsorbent resins are compounded with inorganic minerals to improve Its water absorption rate, salt resistance, water retention and gel strength and other properties have become research hotspots for expanding application fields.

[0003] At present, superfine kaolin, montmorillonite or mica and other inorganic minerals are often compounded with starch-grafted superabsorbent resins by reverse-phase suspension polymerization, but there are problems of complex process and high cost, and the salt tolerance and condensation of the products Glue strength, water absorption rate and thermal stability are generally not hig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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