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Water absorbent

A technology of water-absorbing agent and water-absorbing resin, which is applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of increased volume of water-absorbing agent, large extrusion force between particles, large resin gaps, etc., and achieve space saving , Reduce the occupied space, good cushioning effect

Inactive Publication Date: 2020-04-28
TAICANG YUNTONG BIOCHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many kinds of water-absorbing agents on the market, the water-absorbing effects are not ideal. Most of the water-absorbing agents are packaged in fixed specifications. Large gaps, greater extrusion force between particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A water-absorbing agent, which consists of the following components in proportion by weight:

[0021] 20 parts of large-diameter water-absorbing resin, 40 parts of small-diameter water-absorbing resin, 1 part of inorganic nano-particles, 10 parts of cellulose fiber, and 10 parts of polyurethane hydrogel particles.

[0022] Among them, the water-absorbing resin with a large particle size is a polyacrylic acid water-absorbing resin, which is spherical and has an average particle size of 1.5 mm. The water-absorbent resin with small particle size is a copolymer of vinyl alcohol and acrylic acid, wherein vinyl alcohol accounts for 20% of the mass fraction of the water-absorbent resin with small particle size, acrylic acid accounts for 80% of the mass fraction of the water-absorbent resin with small particle size, and the water-absorbent resin with small particle size The average particle size of the resin is 300 μm. The inorganic nanoparticles are silica nanoparticles with ...

Embodiment 2

[0024] A water-absorbing agent, which consists of the following components in proportion by weight:

[0025] 25 parts of large-diameter water-absorbing resin, 45 parts of small-diameter water-absorbing resin, 2 parts of inorganic nanoparticles, 12 parts of cellulose fiber, and 15 parts of polyurethane hydrogel particles.

[0026] Among them, the water-absorbing resin with a large particle size is a polyacrylic acid water-absorbing resin, which is spherical and has an average particle size of 2.5 mm. The water-absorbent resin with small particle size is a copolymer of vinyl alcohol and acrylic acid, wherein vinyl alcohol accounts for 25% of the mass fraction of the water-absorbent resin with small particle size, acrylic acid accounts for 75% of the mass fraction of the water-absorbent resin with small particle size, and the water-absorbent resin with small particle size The average particle size of the resin is 400 μm. The inorganic nanoparticles are silica nanoparticles with ...

Embodiment 3

[0028] A water-absorbing agent, which consists of the following components in proportion by weight:

[0029] 20 parts of large-diameter water-absorbing resin, 40 parts of small-diameter water-absorbing resin, 5 parts of inorganic nanoparticles, 10 parts of cellulose fiber, and 18 parts of polyurethane hydrogel particles.

[0030] Among them, the water-absorbing resin with a large particle size is a polyacrylic acid water-absorbing resin, which is spherical and has an average particle size of 1.5 mm. The water-absorbent resin with small particle size is a copolymer of vinyl alcohol and acrylic acid, wherein vinyl alcohol accounts for 20% of the mass fraction of the water-absorbent resin with small particle size, acrylic acid accounts for 80% of the mass fraction of the water-absorbent resin with small particle size, and the water-absorbent resin with small particle size The average particle size of the resin is 300 μm. The inorganic nanoparticles are silica nanoparticles with ...

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PUM

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Abstract

The invention relates to a water absorbent, which comprises the following components in parts by weight: 20-30 parts of large-particle-size water absorbent resin, 40-50 parts of small-particle-size water absorbent resin, 1-5 parts of inorganic nanoparticles, 10-15 parts of cellulose fibers and 10-20 parts of polyurethane hydrogel particles. The particle size of the large-particle-size water-absorbent resin is 1-3 mm; the particle size of the small-particle-size water-absorbent resin is 300-500 [mu]m; and the length of the cellulose fiber is 5-10 [mu]m. The water absorbent disclosed by the invention is excellent in water absorption performance, relatively good in elasticity after absorbing water and relatively small in occupied space.

Description

technical field [0001] The present invention relates to a water absorbing agent. Background technique [0002] As a water absorbent, it is required to exhibit good physical properties (centrifugal water retention capacity, saline flow conductivity, water absorption under pressure, fixed height absorption capacity, mass average particle size, liquid diffusivity, etc.). Although there are many kinds of water-absorbing agents on the market, the water-absorbing effects are not ideal. Most of the water-absorbing agents are packaged with fixed specifications. The larger the gap, the greater the extrusion force between the particles. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to provide a water-absorbing agent, which has excellent water-absorbing performance, good elasticity after absorbing water, and takes up less space. [0004] A water-absorbing agent of the present invention comprises the followi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/261B01J20/26
Inventor 张卫东
Owner TAICANG YUNTONG BIOCHEM ENG
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