High water absorption and water retention composite materials containing sodium calcium aluminium silicate glue and method for preparing same

An aluminosilicate and composite material technology, which is applied to the formulation and preparation of superabsorbent and water-retaining agents, can solve the problems of high raw material cost, low liquid absorption rate, and high equipment requirements, and achieves low raw material cost, low cost, Good salt resistance

Active Publication Date: 2006-10-11
GUOJIA NEW MATERIAL HUBEI ENVIRONMENTAL PROT GEL IND PARK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the above series of varieties, some raw material costs are relatively high, some have low liquid absorption ratios for aqueous solutions containing certain ion concentrations, especially calcium and magnesium ions, some have poor salt tolerance, and some have complex processes and high equipment requirements.
The water-absorbing and water-retaining materials used for agriculture and forestry purposes are limited due to the high cost of raw materials, low liquid absorption ratio for absorbing aqueous solutions containing calcium and magnesium ions, and poor salt resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In 300 grams of acrylic acid solution with a concentration of 20% and a neutralization degree of 90%, add 0.0029 grams of N, N'-methylenebisacrylamide and 0.03 grams of potassium persulfate under stirring, dissolve, and then grind the ultrafine 10 grams of sodium calcium aluminum silicate (content greater than 50%) was added thereto, and ultrasonically dispersed for 10 minutes. After the mixed material was heated in the reactor at 50°C for 7 hours, the temperature was raised to 30°C for 1 hour, and the resulting gel was sliced, dried, crushed, screened and classified to obtain the final product.

Embodiment 2

[0035]In 300 grams of acrylic acid solution with a concentration of 30% and a neutralization degree of 80%, add 0.022 grams of N, N'-methylenebisacrylamide and 0.425 grams of potassium persulfate under stirring, dissolve, and then grind the ultrafine 50 grams of sodium calcium aluminum silicate (content greater than 90%) is added therein, and the colloid mill is dispersed for 20 minutes. The mixed material was heated in a reactor at 70°C for 3 hours, then raised to 10°C, and reacted for 2 hours. The resulting gel was sliced, dried, crushed, screened and classified to obtain the final product.

Embodiment 3

[0037] In 200 grams of acrylic acid solution with a concentration of 45% and a neutralization degree of 40%, add 0.005 grams of N, N'-methylenebisacrylamide and 0.050 grams of potassium persulfate under stirring, dissolve, and then grind the ultrafine 30 grams of sodium calcium aluminum silicate (content greater than 60%) is added therein, and the colloid mill is dispersed for 20 minutes. The mixed material was heated at 60°C in the reactor for 4 hours, then raised to 20°C, and reacted for 3 hours. The resulting gel was sliced, dried, crushed, screened and classified to obtain the final product.

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PUM

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Abstract

The invention relates to a high water-absorbing water-loss reducer formulation and its process for preparing, in which the water-absorbing water-retaining composite containing soda-aluminosilicate colloid is characterized in that it consists of soda-aluminosilicate colloid, water-soluble vinyl unsaturated monomer and water-soluble free radical polymerization initiator, in which the additive mass of the soda-aluminosilicate colloid is 2-200 % of the water-soluble vinyl unsaturated monomer and the additive mass of the water-soluble free radical polymerization initiator is 0.001-1 % of the water-soluble vinyl unsaturated monomer. The process for preparing includes: decentralizedly processing the soda-aluminosilicate colloid dissolved with water-soluble free radical polymerization initiator or water-soluble vinyl unsaturated monomer dissolved with water-soluble free radical polymerization initiator and coupling agent with 20-90 % of weight concentration at 30-90 DEG C and heating them for 1-10 hours, slicing the produced gel, drying, comminuting and screening to obtain the product at 40-150. The invention is of low preparation cost, higher input scaling factor and better salt resistance, so is suitable for agrisilviculture.

Description

technical field [0001] The invention relates to a formulation of a superabsorbent and water-retaining agent and a preparation method thereof. More precisely, the invention relates to a superabsorbent and water-retaining composite material containing sodium-calcium-aluminosilicate colloid and a preparation method thereof. Background technique [0002] In recent years, superabsorbent and water-retaining agents have been widely used as sanitary products and industrial materials. Among the known superabsorbent and water-retaining agents, there are several series of varieties: vinyl water-soluble monomer homopolymers, copolymers, starch-grafted vinyl water-soluble monomer series, cellulose-grafted vinyl water-soluble Sexual monomer series, cross-linked carboxymethyl cellulose, etc. In the composite series, there are composites of superabsorbent resins and inorganic gels, and composites of superabsorbent resins and organic substances. Among the above series of varieties, some ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/02C08F2/44C08K3/34C08K9/00
Inventor 王海波胡茂华熊静峦王中元陈霞尚娜
Owner GUOJIA NEW MATERIAL HUBEI ENVIRONMENTAL PROT GEL IND PARK CO LTD
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