Method for preparing super absorbent resin microspheres

A technology of superabsorbent resin and microspheres, which is applied in the field of resin preparation and superabsorbent resin microspheres, to achieve the effects of simplifying the post-processing process, reducing production costs, and simplifying the preparation process

Inactive Publication Date: 2015-03-25
CHENGDU JINHUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of the preparation method of superabsorbent resin microspheres in the prior art, p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of superabsorbent resin microspheres, comprising the following process steps:

[0023] A. Weigh 500ml of cyclohexane and put it into the reaction container, start stirring, then place the reaction container in a water bath for heating, add a dispersant stabilizer to obtain an oil phase system;

[0024] B. Weigh 80g of methacrylic acid, 20g of acrylamide, 0.3g of polyethylene glycol, 0.3g of ammonium persulfate and 0.3g of sodium bicarbonate and mix to obtain an aqueous phase system, then put it into the reaction vessel of step A, and heat up to 75°C;

[0025] C. Start stirring to make the water phase form uniform beads and disperse in the oil phase;

[0026] D. After the beads are shaped, raise the temperature to 80°C and keep warm; raise the temperature to 85°C and keep warm; raise the temperature to 90°C and keep warm; cool down to 30°C, filter to get the sphere, use ethanol to wash the sphere, dry and seal it. Obtain super absorbent resin micro...

Embodiment 2

[0028] A preparation method of superabsorbent resin microspheres, comprising the following process steps:

[0029] A. Weigh 1000ml of cyclohexane and put it into the reaction container, start stirring, then place the reaction container in a water bath for heating, add a dispersant stabilizer to obtain an oil phase system;

[0030] B. Weigh 100g of methacrylic acid, 40g of acrylamide, 0.8g of polyethylene glycol, 0.6g of ammonium persulfate and 0.6g of sodium bicarbonate and mix to obtain an aqueous phase system, then put it into the reaction vessel of step A, and heat up to 75°C;

[0031] C. Start stirring to make the water phase form uniform beads and disperse in the oil phase;

[0032] D. After the beads are finalized, raise the temperature to 80°C and keep warm; raise the temperature to 85°C and keep warm; raise the temperature to 90°C and keep warm; cool down to 50°C, filter to get the sphere, use ethanol to wash the sphere, dry and seal it. Obtain super absorbent resin ...

Embodiment 3

[0034] A preparation method of superabsorbent resin microspheres, comprising the following process steps:

[0035] A. Weigh 750ml of cyclohexane and put it into the reaction vessel, start stirring, then place the reaction vessel in a water bath for heating, add a dispersant stabilizer to obtain an oil phase system;

[0036] B. Weigh 90g of methacrylic acid, 30g of acrylamide, 0.55g of polyethylene glycol, 0.45g of ammonium persulfate and 0.45g of sodium bicarbonate and mix to obtain an aqueous phase system, then put it into the reaction vessel of step A, and heat up to 75°C;

[0037] C. Start stirring to make the water phase form uniform beads and disperse in the oil phase;

[0038] D. After the beads are shaped, raise the temperature to 80°C and keep warm; raise the temperature to 85°C and keep warm; raise the temperature to 90°C and keep warm; cool down to 40°C, filter to get the sphere, use ethanol to wash the sphere, dry and seal it. Obtain super absorbent resin microsph...

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PUM

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Abstract

The invention relates to a method for preparing super absorbent resin microspheres, belongs to the technical field of high polymer materials, and solves the problems that a reversed phase suspension polymerization process for preparing super absorbent resin microspheres in the prior art is complex and is high in cost in the production process, the prepared microspheres are poor in molding and low in yield. The method adopts a reversed phase suspension technique and is simple in preparation process, the products can be used without further grinding, the after-processing process of products is simplified, the yield of products is improved, and the production cost of products is reduced.

Description

technical field [0001] The invention relates to a method for preparing resin, more specifically, the invention relates to a method for preparing superabsorbent resin microspheres, which belongs to the technical field of polymer materials. Background technique [0002] Superabsorbent resin is a functional polymer with a wide range of development and application. It can absorb water that is hundreds to thousands times heavier than its own weight. After absorbing water, it becomes a highly swollen colorless transparent gel, which can It is not easy to squeeze out water and has excellent water retention performance. Therefore, it is widely used in agriculture, forestry, horticulture and other fields as a soil improver, sanitary product material, industrial dehydrating agent, and preservative. [0003] The State Intellectual Property Office published a publication number CN103554331A on 2014.2.5, titled "A method for preparing polyacrylic acid superabsorbent resin microspheres by...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/56C08F2/32
Inventor 张一帆
Owner CHENGDU JINHUI TECH
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