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Environment-friendly drying agent and preparation method thereof

A desiccant and environmental protection technology, applied in the field of environmental protection desiccant and its preparation, can solve the problems of further improvement of the drying effect, limited use range of the desiccant, pollution of the environment to be dried, etc., and achieves efficient and long-lasting adsorption performance and remarkable drying effect. , good water absorption effect

Inactive Publication Date: 2020-12-25
王旭刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the desiccants currently used are prepared from silica gel, montmorillonite and quicklime. These existing desiccants have low moisture absorption rate, limited adsorption capacity, and are environmentally unfriendly, and even pollute the environment and the items to be dried. Ingestion will cause harm to the human body and other problems, resulting in the limitation of the scope of use of the existing desiccant
In addition, the desiccants on the market still have more or less defects such as non-degradable, low safety in use, low productivity, and the drying effect needs to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of an environmentally friendly desiccant, comprising the steps of:

[0030] Step S1, after mixing the water-absorbing stone, nanoporous hollow cage-shaped titanium oxide, anhydrous magnesium sulfate, and sawdust evenly, grinding through a 100-mesh sieve, drying at 95°C to constant weight, and obtaining the filler;

[0031] Step S2, the filling material made through step S1, vinyl β-cyclodextrin quaternary ammonium salt, 2-hydroxy-3-butenyl glucosinolate, polyethylene glycol diacrylate, D-allyl glycine , vinyl alkoxy silicon, and initiator were added to a high-boiling point solvent, stirred and reacted at 70°C for 3 hours in a nitrogen atmosphere, and then precipitated in water, and the precipitated polymer was rotary evaporated to remove the solvent to obtain an intermediate product;

[0032] Step S3, adding the intermediate product, 1,3-diglycidyl ether glycerol, alginic acid, and basic catalyst into N,N-dimethylformamide, stirred at 70°C for react...

Embodiment 2

[0039] A preparation method of an environmentally friendly desiccant, comprising the steps of:

[0040] Step S1, after mixing the water-absorbing stone, nanoporous hollow cage-shaped titanium oxide, anhydrous magnesium sulfate, and sawdust evenly, grinding through a 120-mesh sieve, drying at 100°C to constant weight, and obtaining a filler;

[0041] Step S2, the filling material made through step S1, vinyl β-cyclodextrin quaternary ammonium salt, 2-hydroxy-3-butenyl glucosinolate, polyethylene glycol diacrylate, D-allyl glycine , vinyl alkoxy silicon, and initiator were added to a high boiling point solvent, stirred and reacted at 72°C for 4 hours in a helium atmosphere, and then precipitated in water, and the precipitated polymer was rotary evaporated to remove the solvent to obtain an intermediate product ;

[0042] Step S3. Add the intermediate product, 1,3-diglycidyl ether glycerol, alginic acid, and basic catalyst into N,N-dimethylformamide, and stir the reaction at 73°C...

Embodiment 3

[0049] A preparation method of an environmentally friendly desiccant, comprising the steps of:

[0050] Step S1, after mixing the water-absorbing stone, nanoporous hollow cage-shaped titanium oxide, anhydrous magnesium sulfate, and sawdust evenly, grinding through a 150-mesh sieve, drying at 103°C to constant weight, and obtaining the filler;

[0051] Step S2, the filling material made through step S1, vinyl β-cyclodextrin quaternary ammonium salt, 2-hydroxy-3-butenyl glucosinolate, polyethylene glycol diacrylate, D-allyl glycine , Vinyl alkoxy silicon, and initiator were added to the high boiling point solvent, stirred and reacted at 75°C for 4.5 hours in a neon atmosphere, and then precipitated in water, and the precipitated polymer was rotary evaporated to remove the solvent to obtain an intermediate product ;

[0052] Step S3, adding the intermediate product, 1,3-diglycidyl ether glycerol, alginic acid, and basic catalyst into N,N-dimethylformamide, stirred at 75°C for re...

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PUM

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Abstract

The invention discloses a preparation method of an environment-friendly drying agent. The preparation method is characterized by comprising the following steps: S1, preparing a mixed filler of water absorption stone, nano porous hollow cage-shaped titanium oxide, anhydrous magnesium sulfate and sawdust; S2, preparing a copolymer; and S3, carrying out post-modification on the 1, 3-diepoxyglyceryl ether glycerol and alginic acid. The invention further discloses the environment-friendly drying agent prepared according to the preparation method of the environment-friendly drying agent. The environment-friendly drying agent is high in moisture absorption rate, strong in adsorption capacity, remarkable in drying effect, good in environment-friendly performance, good in performance stability andefficient and long-lasting in adsorption performance.

Description

technical field [0001] The invention relates to the technical field of desiccants, in particular to an environment-friendly desiccant and a preparation method thereof. Background technique [0002] Desiccant refers to the substance that can remove part of the moisture in the wet substance. It is a material with a high affinity with water. It can absorb the moisture in other surrounding materials through the adsorption phenomenon to achieve the purpose of drying. It is also called an adsorbent. According to different adsorption methods and reaction products, desiccants are divided into physical adsorption desiccants and chemical adsorption desiccants. Physical adsorption desiccants include silica gel, alumina gel, molecular sieve, activated carbon, bone charcoal, charcoal, mineral desiccant, or activated clay, etc. Its drying principle is to physically adsorb water molecules in its own structure. Chemical adsorption desiccant includes concentrated sulfuric acid, phosphorus p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/267B01J20/3021B01J20/3071B01J20/3085
Inventor 王旭刚
Owner 王旭刚
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