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Color super absorbent resin for soilless culture and preparation method thereof

A technology of superabsorbent resin and soilless cultivation, which is applied in the field of superabsorbent materials, can solve problems such as decolorization, and achieve the effects of uniform color, good bonding fastness, and good market prospects

Active Publication Date: 2015-05-06
SHAANXI TECHN INST OF DEFENSE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a colored superabsorbent resin for soilless cultivation, which solves the problem of discoloration of the existing colored superabsorbent resin during use

Method used

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  • Color super absorbent resin for soilless culture and preparation method thereof
  • Color super absorbent resin for soilless culture and preparation method thereof
  • Color super absorbent resin for soilless culture and preparation method thereof

Examples

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preparation example Construction

[0035] The preparation method of the above-mentioned colored superabsorbent resin specifically includes the following steps:

[0036] Step 1, adding acrylamide monomer purified by recrystallization into water and stirring evenly to obtain an aqueous acrylamide solution; wherein, the mass ratio of acrylamide monomer to water is 1:1-5;

[0037]Step 2, adding dye monomers to the acrylamide aqueous solution obtained in step 1, placing them in an ultrasonic device, stirring evenly under ultrasonic radiation conditions to obtain a mixture A, and the ultrasonic power is 50-200W; wherein the acrylamide monomer and the dye monomer The mass ratio of monomer is 1:0.01~0.1; the dye monomer is a water-soluble azo dye with double bond, for example, the yellow one is: 4-acryloyloxy-4'-sulfonic acid Azobenzene, 1-(4-acryloyloxyphenylazo)-9,10-anthraquinone, etc.; green ones are: 4-acrylamido-4'-chloroazobenzene, 4 -Acrylamido-3',5'-dinitroazobenzene, 4-acrylamido-2',4'-dinitroazobenzene, etc...

Embodiment 1

[0043] Dissolve 10g of acrylamide in 10mL of distilled water, then add 0.1g of dye monomer M1, place in an ultrasonic device (such as an ultrasonic cleaner with a power of 50W), and stir evenly under ultrasonic conditions; Add 0.0001g of cross-linking agent N, N'-methylenebisacrylamide, and stir evenly; then add 0.01g of initiator potassium persulfate to the above mixture, fully stir and mix uniformly, under ultrasonic radiation conditions (ultrasonic power 50W), control the reaction temperature to be 80°C, and keep stirring for 30 minutes to obtain the crude product containing water; vacuum-dry the crude product containing water obtained, mechanically pulverize and pass through an 80-mesh sieve to obtain a dry crude product, and dry the crude product The product is placed in a 200-mesh nylon filter, soaked in distilled water for 12 hours to remove possible unreacted monomers, and the soaked product is collected, dried and pulverized to obtain a golden yellow superabsorbent res...

Embodiment 2

[0050] Dissolve 10g of acrylamide in 50mL of distilled water, then add 1g of dye monomer M2, place in an ultrasonic device (such as an ultrasonic cleaner with a power of 200W), and stir evenly under ultrasonic conditions; Add 0.01g of cross-linking agent N, N'-methylenebisacrylamide, and stir evenly; then add 0.1g of initiator ammonium persulfate to the above mixture, stir and mix well, and then under ultrasonic radiation conditions (ultrasonic power is 200W), control the reaction temperature to be 65°C, keep the stirring reaction for 60 minutes, and obtain the crude product containing water; vacuum-dry the crude product containing water obtained, pass through an 80-mesh sieve after mechanical crushing to obtain the dry crude product, and dry the crude product Place in a 200-mesh nylon filter, soak in distilled water for 24 hours to remove possible unreacted monomers, collect, dry and pulverize the soaked product to obtain a green superabsorbent resin.

[0051] Said dye monome...

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Abstract

The invention discloses a color super absorbent resin for soilless culture, which is prepared from acrylamide, a dye monomer and a crosslinking agent by polymerizing in a mass ratio of 1: (0. 01-0.1): (0.00001-0.001), wherein the dye monomer is a water-soluble double-bond azo dye. The color super absorbent resin for soilless culture is prepared through the following steps: adding acrylamide in water so as to obtain an acrylamide aqueous solution; adding a dye monomer in the acrylamide aqueous solution and uniformly stirring under ultrasonic radiation condition; adding a crosslinking agent and an initiator into the obtained mixture to carry out polymerization reaction under ultrasonic radiation condition, thus obtaining a water-containing crude product; and carrying out post-treatment on the water-containing crude product, thus obtaining a final product. According to the invention, the double-bond dye monomer and acrylamide and the like are subjected to copolymerization through a chemical reaction, so that the dye monomer is coupled in a chemical structure of the super absorbent resin through covalent bonds, thereby solving the problem that an existing color super absorbent resin is decolored when in use; and the color super absorbent resin for soilless culture disclosed by the invention is good in binding strength, and is free from color losing, color fading, non-uniform color, and the like after encountering water when in use.

Description

technical field [0001] The invention belongs to the technical field of superabsorbent materials, and in particular relates to a colored superabsorbent resin for soilless cultivation, and also relates to a preparation method of the colored superabsorbent resin. Background technique [0002] Superabsorbent resin is a new type of functional polymer material. Because of its strong water absorption and excellent water retention, it has broad application prospects in agriculture, forestry, horticulture, and desert control. The superabsorbent resins in the initial stage of research are mainly acrylate polymers, and the products are white or nearly colorless. With the continuous expansion of the application field of superabsorbent resin, superabsorbent resin with different colors has become a research and development hotspot. In addition to practical value, colorful superabsorbent resin also adds ornamental value to it. The current main uses of colored superabsorbent resins are: cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F222/38C08F220/36C08F220/60C08F220/34C08F2/46
Inventor 孙宾宾
Owner SHAANXI TECHN INST OF DEFENSE IND
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