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Method for preparing superabsorbent resin particle from superabsorbent resin powder, and superabsorbent resin particle produced therethrough

A technology of super absorbent resin and resin powder, applied in the field of water absorbent resin, can solve the problems of limited processing and application, small profit margin, not easy to fix, etc., and achieves the effect of fast diffusion, increased profit margin, and good water retention performance.

Active Publication Date: 2018-06-15
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fine powder is easy to generate dust, and it is not easy to fix when processing sanitary products, which limits its further processing and application
[0003] The general reprocessing method is to mix the fine powder back into the colloid, or sell it at a reduced price, and the profit margin is not large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 50g superabsorbent resin fine powder not exceeding 100 meshes, make a mixed solution with 1.25g ethylene glycol, 0.1g polyethylene glycol diglycidyl ether and 1.5g deionized water, and keep stirring the superabsorbent fine powder Add the mixed solution, stirring at a speed of 600r / min, until the volume of the super absorbent resin fine powder expands by 5 times and becomes fluffy. Then put it in an oven at 140°C and keep it warm for 40 minutes. After the heating is completed, take it out and cool it down to 25°C and crush it, then add 1.5g of aluminum sulfate aqueous solution with a concentration of 25wt% and stir evenly, and finally add 1g of 5000 mesh silica powder Stir evenly, crush and sieve to obtain particles of 25 mesh to 100 mesh, which is the finished product.

[0036] The index of the superabsorbent resin particle that present embodiment 1 makes is:

[0037] Appearance: white particles;

[0038] Solid content: 96.4%;

[0039] Density: 0.52g / cm 3 ;

...

Embodiment 2

[0047] Weigh 75g of superabsorbent resin fine powder not exceeding 100 meshes, make a mixed solution with 2.2g of ethylene glycol, 0.15g of polyethylene glycol diglycidyl ether and 2.5g of deionized water, and keep stirring the fine powder of superabsorbent resin Add the mixed solution, stirring at a speed of 600r / min, until the volume of the super absorbent resin fine powder expands by 5 times and becomes fluffy. Then put it in an oven at 140°C and keep it warm for 60 minutes. After the heating is completed, take it out and cool it down to 25°C and crush it. Then add 2g of aluminum sulfate aqueous solution with a concentration of 25wt% and stir evenly. Finally, add 1.5g of 5000 mesh silica powder Stir evenly, crush and sieve to obtain particles of 25 mesh to 100 mesh, which is the finished product.

[0048] The index of the superabsorbent resin particle that present embodiment 2 makes is:

[0049] Appearance: white particles;

[0050] Solid content: 96.6%;

[0051] Density...

Embodiment 3

[0059] Weigh 80g of superabsorbent resin fine powder not exceeding 100 meshes, make a mixed solution with 2.5g of butanediol, 0.2g of polyethylene glycol diglycidyl ether and 3g of deionized water, and mix under constant stirring of superabsorbent resin powder The mixed solution is added, and the stirring speed is 200r / min, until the volume of the super absorbent resin fine powder expands by 3 times and becomes fluffy. Then put it in an oven at 160°C and keep it warm for 50 minutes. After the heating is completed, take it out and cool it down to 25°C and crush it. Then add 3g of aluminum sulfate aqueous solution with a concentration of 20wt% and stir evenly. Finally, add 2g of 5000 mesh fumed silica powder Stir evenly, crush and sieve to obtain particles of 25 mesh to 100 mesh, which is the finished product.

[0060] The index of the superabsorbent resin particle that present embodiment 3 makes is:

[0061] Appearance: white particles;

[0062] Solid content: 96.7%;

[0063...

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Abstract

The invention relates to a method for preparing a superabsorbent resin particle from superabsorbent resin powder, and the superabsorbent resin particle produced therethrough. The method comprises thefollowing steps: (1) placing 50-100 parts by weight of the superabsorbent resin powder in a container, and adding a mixed solution while stirring until the volume of the superabsorbent resin powder increases by 3-10 times in order to obtain a pretreated material, wherein the mixed solution comprises, by weight, 1.25-2.5 parts of a dispersant, 0.1-0.25 part of an adhesive and 1.5-3 parts of a solvent; (2) heating the pretreated material prepared in step (1) at 140-200 DEG C; and (3) crushing the heated pretreated material obtained in step (2) to form particles, uniformly mixing the particles with 1.5-3 parts by weight of a fixing agent, and adding 1-2 parts by weight of silica in order to prepare the superabsorbent resin particle. The superabsorbent resin particle having the advantages of small density, fast absorption speed, fast diffusion speed and good water retention performance is prepared through the method, and the profit margin is increased.

Description

technical field [0001] The invention relates to the technical field of water-absorbent resin, in particular to a method for preparing water-absorbent resin particles by using super-absorbent resin powder and the super-absorbent resin particles prepared by the method. Background technique [0002] In the production process of polymer water-absorbent resin, a large amount of fine powder will be produced in the grinding and sieving stage, that is, polymer water-absorbent resin powder (also known as SAP fine powder). Due to the small particle size of the fine powder, the smaller the particle size of the polymer water-absorbent resin of the same quality, the larger the specific surface area and the faster the absorption speed. However, fine powder is easy to generate dust, and it is not easy to fix when processing sanitary products, which limits its further processing and application. [0003] The general reprocessing method is to mix the fine powder back into the colloid, or se...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08L101/12C08L71/02C08K3/36
CPCC08J3/12C08J2300/12C08J2471/02C08K3/36C08K2201/005
Inventor 荣敏杰吕蒙许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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