CN108704453A - A kind of preparation method of air dewetting agent - Google Patents
A kind of preparation method of air dewetting agent Download PDFInfo
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- CN108704453A CN108704453A CN201810543641.XA CN201810543641A CN108704453A CN 108704453 A CN108704453 A CN 108704453A CN 201810543641 A CN201810543641 A CN 201810543641A CN 108704453 A CN108704453 A CN 108704453A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/263—Drying gases or vapours by absorption
Abstract
The invention discloses a kind of preparation methods of air dewetting agent, belong to field of environment protection.The present invention is grafted methylcellulose with methacrylic acid, is added into dehumidizer, and hygroscopic capacity increases with the polar enhancing of hydrophilic radical contained by monomer, contains a large amount of highly polar group-SO containing highly polar ionic group3 ‑Hydrogen bond is formed with water, by hydropexis on macromolecular chain, and causes a part of water of final residue inside high molecular material, the wettability power of macromolecule humidity adjusting material is significantly greater than the wettability power of the material containing non-ionic group, especially CaCl2Modified polymethyl acid, can a large amount of adsorption moistures, will not rupture generation liquid after absorbing a large amount of water, be easy to use.The absorption that the present invention solves non-its specific surface of deliquescence dehumidizer at present is easily saturated, and absorbent capacity is small, and deliquescence dehumidizer wettability power is strong, but it absorbs easily rupturable generation liquid after a large amount of water, the problem of being not convenient to use.
Description
Technical field
The invention belongs to field of environment protection, and in particular to a kind of preparation method of air dewetting agent.
Background technology
Air dewetting agent is in direct contact with air using the solid or fluent material with wet-out property, realizes air
Dehumidifying.It is easily achieved isothermal dehumidifying due to having, irreversible loss is small, and thermodynamics consummating degree is high；It can use more low-grade
Thermal energy is as drive energy；It is simple in structure without larger moving component, it is easy to minimize；Dust, the bacterium etc. in air can be removed
Nuisance, improve air quality the advantages that and be used widely.Air humidity is one to be had closely with people's life and production
The important environmental parameters of relationship, humidity have human comfort, process of producing product, product quality and product storage life important
Meaning.It, can be serious if do not controlled humidity especially in the production processes such as precision instrument, metrical instrument, electronics and chemical industry
Product quality, the precision of instrument and service life are influenced, or even makes electronic product that can not operate until scrapping.Article is in humidity
Environment in store, can due to mould erosion and moldy metamorphism；Metal rusting, accuracy of instrument can be made to decline, insulation parameter drop
It is low, great loss is caused to national economy.Air dewetting has been common problem, with the development and life of production
Horizontal raising, air dewetting have developed and have formed a new technology.
Dehumidizer is divided into two kinds, and one kind is non-deliquescence dehumidizer, including silica gel, molecular sieve etc., and another kind is deliquescence dehumidifying
Agent, such as hygroscopic salt, including calcium chloride, lithium chloride.Non- deliquescence dehumidizer, moisture absorption mechanism is physical absorption, since it has
Big specific surface and absorption of the capillary action generation to moisture containing a large amount of micropore.And dehumidizer is deliquesced, such as moisture absorption
Property salt, including calcium chloride, lithium chloride.Its dominant mechanism is chemical absorbing, is absorbed to moisture by series of chemical.
Currently used dehumidizer has lithium chloride, silica gel, molecular sieve, calcium chloride etc..Although there is certain moisture sorption effect, it absorbs big
Easily rupturable generation liquid after amount water, is not convenient to use.Therefore, produce a kind of dehumidizer that can be solved the above problems have it is prodigious
The market demand.
Invention content
The technical problems to be solved by the invention：It being easily saturated for non-deliquescence dehumidizer absorption at present, absorbent capacity is small,
It is strong to deliquesce dehumidizer wettability power, but easily rupturable generation liquid provides one kind the problem of being not convenient to use after its a large amount of water of absorption
The preparation method of air dewetting agent.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of air dewetting agent, which is characterized in that the preparation method includes the following steps：
（1）Take sodium alginate in mass ratio 1：5 ~ 8 are added distilled water mixing, are stirred in 40 ~ 50 DEG C, obtain mixed liquor, by matter
Number meter is measured, takes 20 ~ 30 portions of mixed liquors, 100 ~ 150 parts of silicon nitride powders, 3 ~ 8 parts of Triammonium citrates, 15 ~ 20 parts of amido silicon oils mixed
It closes, is placed in ball mill, ball milling, obtains ball milling material, rotary evaporation, injection molding obtains base-material；
（2）To base-material surface in mass ratio 3 ~ 5：1 ~ 3 spray concentration is the calcium chloride solution of 1mol/L, is stood, and demoulding obtains mould
Material, modulus material in mass ratio 1：2 ~ 4 are added grape acid lactone solution, in 30 ~ 40 DEG C of immersions, take out and impregnate post mold, through distillation
Water cleans, and freeze-drying obtains dehumidizer base-material, spare；
（3）Take sodium aluminate in mass ratio 2 ~ 3：3~5：10 ~ 15 are added sodium hydroxide, deionized water, are stirred in 30 ~ 40 DEG C,
Mixture is obtained, nine water sodium metasilicate in mass ratio 1 are taken：5 ~ 7 are added deionized water, obtain mixed liquor, take mixture in mass ratio 3：2 add
Enter mixed liquor to be stirred, in 400W microwaves, be washed through deionized water, filters, take suction filtration slag；
（4）It takes and filters slag in mass ratio 1 ~ 3：4 ~ 5 are added the cerous nitrate aqueous solution that mass fraction is 9%, adjust pH to 4 ~ 5, in
25 ~ 30 DEG C of activation, obtain activator, take activator in 500 ~ 550 DEG C of heat preservations, and crushing sieves with 100 mesh sieve, and collect sieving particle, spare；
（5）It is 1 ~ 3 to take methylcellulose mass ratio：2 ~ 4 are added methacrylic acid, obtain mixture A, take N, N- di-2-ethylhexylphosphine oxides third
Acrylamide in mass ratio 1：5 ~ 7 addition deionized waters are stirred, and obtain stirring mixture, take stirring mixture in mass ratio 2 ~ 5：
4 ~ 7 are added mixture A, are passed through nitrogen protection, are stirred, add the calcium chloride solution for being stirred 2 ~ 4 times of amount of substance, in
60 ~ 70 DEG C are stirred, and stand, obtain standing liquid；
（6）According to the mass fraction, step is taken（4）Spare sieving particle in mass ratio 2 ~ 5：10 ~ 15 are added deionized water, stirring
1 ~ 2h is mixed, soak is obtained, in crystallization tank, takes step（2）Spare dehumidifying base-material is soaked in soak, in 150 ~ 160
DEG C 40 ~ 45min of microwave is cooled to room temperature then at 550 ~ 600 DEG C of 2 ~ 3h of heat preservation, takes cooling thing in mass ratio 3：2 are added standing
Liquid adds the ammonium persulfate for standing liquid quality 1 ~ 3%, is stirred in 70 ~ 80 DEG C, stands, dry to get air dewetting agent.
Compared with other methods, advantageous effects are the present invention：
（1）Sodium alginate is added using silicon nitride as aggregate in the present invention, forms gel, bonus point powder Triammonium citrate, crosslinking agent chlorine
Change calcium, in-situ solidifying forms ceramic mould base-material, introduces pore passage structure in silicon nitride biscuit, prepare with cellular pore passage structure
Ceramics dehumidifying base-material, there is rod-like crystal whisker structures to be paved with entire pore passage structure in duct, with three-dimensional space grid knot
Structure, under stress load, the aperture of hole and hole shape do not change, and have good mechanical strength and rigidity, sodium alginate
After aqueous solution is contacted with divalent calcium ions solution, bivalent cation starts to spread to sodium alginate aqueous solution, and ionic gel occurs
Grape acid lactone is added in reaction, promotes ion exchange, in the interface of two solution, due to the friendship of calcium ion and sodium alginate
Connection reacts and sodium alginate molecular entanglement is made to shrink, and causes colloidal sol to be formed by curing gel, is formed simultaneously the hexagonal of uniform pore diameter
Shape duct forms porous dehumidifying base-material, is conducive to load dehumidifying active matter；
（2）Present invention Vacuum-assisted method molecular sieve substance on ceramics dehumidifying base-material, it is molecular sieve carried in porous binder
In, it is raw material by sodium metasilicate, sodium aluminate and sodium hydroxide etc., is synthesized using microwave, be stirred for uniform agglutination, process is old
Change, then in closed reaction kettle under certain condition crystallization, ultimately produce the zeolite of crystal structure, cerous nitrate be added and carries out
Modified, post-treated to obtain molecular sieve, obtained molecular sieve falls below nanoscale, and external surface area increases, and holds silicone hydroxyl concentration
Increase therewith, being acted on hydrone enhances, while the duct of nanocrystal is shortened, and can more be eated dishes without rice or wine, is higher transgranular
Diffusion rate improves moisture removal and moisture absorption rate, after cerous nitrate is added, after the temperature spot of the maximum desorption rate of molecular sieve
It moves, the temperature under maximum desorption rate reduces, and reduces the temperature of molecular sieve desorption vapor, and then can improve in molecular sieve
The desorption performance of moisture achievees the effect that water suction desorption；
（3）The present invention is grafted methylcellulose with methacrylic acid, is added into dehumidizer, and hygroscopic capacity is with close contained by monomer
The polar enhancing of water base group and increase, contain a large amount of highly polar group-COOH containing highly polar ionic group forms hydrogen with water
Key by hydropexis on macromolecular chain, and causes a part of water of final residue inside high molecular material, macromolecule humidity adjusting material
Wettability power be significantly greater than the material containing non-ionic group wettability power, especially CaCl2Modified polymethyl acid, can be with
A large amount of adsorption moistures will not rupture generation liquid after absorbing a large amount of water, be easy to use.
Specific implementation mode
A kind of preparation method of air dewetting agent, the preparation method include the following steps：
（1）Take sodium alginate in mass ratio 1：5 ~ 8 are added distilled water mixing, are stirred 30 ~ 40min in 40 ~ 50 DEG C, must mix
Liquid takes 20 ~ 30 portions of mixed liquors, 100 ~ 150 parts of silicon nitride powders, 3 ~ 8 parts of Triammonium citrates, 15 ~ 20 parts of amino according to the mass fraction
Silicone oil mixes, and is placed in ball mill, 4 ~ 5h of ball milling, obtains ball milling material, rotary evaporation, injection molding obtains base-material；
（2）To base-material surface in mass ratio 3 ~ 5：1 ~ 3 spray concentration is the calcium chloride solution of 1mol/L, stands 2 ~ 3 days, demoulding,
Obtain mould material, modulus material in mass ratio 1：2 ~ 4 be added grape acid lactone solution, in 30 ~ 40 DEG C impregnate 18 ~ for 24 hours, take out impregnate rear mold
Material, is cleaned through distilled water, is freeze-dried, is obtained dehumidizer base-material, spare；
（3）Take sodium aluminate in mass ratio 2 ~ 3：3~5：10 ~ 15 are added sodium hydroxide, deionized water, and 30 are stirred in 30 ~ 40 DEG C
~ 40min, obtains mixture, takes nine water sodium metasilicate in mass ratio 1：5 ~ 7 are added deionized water, obtain mixed liquor, take mixture by quality
Than 3：2 addition mixed liquors are stirred 1 ~ 2h, in 400W 20 ~ 25min of microwave, are washed through deionized water, filter, take suction filtration slag；
（4）It takes and filters slag in mass ratio 1 ~ 3：4 ~ 5 are added the cerous nitrate aqueous solution that mass fraction is 9%, and ammonium hydroxide is added and adjusts pH
To 4 ~ 5,60 ~ 80min is activated in 25 ~ 30 DEG C, obtains activator, takes activator to keep the temperature 2 ~ 3h in 500 ~ 550 DEG C, crushed 100 mesh
Sieve collects sieving particle, spare；
（5）It is 1 ~ 3 to take methylcellulose mass ratio：2 ~ 4 are added methacrylic acid, obtain mixture A, take N, N- di-2-ethylhexylphosphine oxides third
Acrylamide in mass ratio 1：5 ~ 7 addition deionized waters are stirred 20 ~ 30min, obtain stirring mixture, take stirring mixture by matter
Measure ratio 2 ~ 5：4 ~ 7 are added mixture A, are passed through nitrogen protection, are stirred 15 ~ 20min, add and be stirred amount of substance 2 ~ 4
Calcium chloride solution again is stirred 3 ~ 5h in 60 ~ 70 DEG C, stands 15 ~ 18h, obtains standing liquid；
（6）According to the mass fraction, step is taken（4）Spare sieving particle in mass ratio 2 ~ 5：10 ~ 15 are added deionized water, stirring
1 ~ 2h is mixed, soak is obtained, in crystallization tank, takes step（2）Spare dehumidifying base-material is soaked in soak, in 150 ~ 160
DEG C 40 ~ 45min of microwave is cooled to room temperature then at 550 ~ 600 DEG C of 2 ~ 3h of heat preservation, takes cooling thing in mass ratio 3：2 are added standing
Liquid adds the ammonium persulfate for standing liquid quality 1 ~ 3%, and 3 ~ 4h is stirred in 70 ~ 80 DEG C, stands 15 ~ 18h, it is dry to get
Air dewetting agent.
A kind of preparation method of air dewetting agent, the preparation method include the following steps：
（1）Take sodium alginate in mass ratio 1：5 are added distilled water mixing, are stirred 30min in 40 DEG C, mixed liquor are obtained, by matter
Number meter is measured, 20 portions of mixed liquors, 100 parts of silicon nitride powders, 3 parts of Triammonium citrates, 15 parts of amido silicon oil mixing is taken, is placed in ball mill
In, ball milling 4h obtains ball milling material, rotary evaporation, and injection molding obtains base-material；
（2）To base-material surface in mass ratio 3：1 spray concentration is the calcium chloride solution of 1mol/L, stands 2 days, and demoulding obtains mould material,
Modulus material in mass ratio 1：2 are added grape acid lactone solution, impregnate 18h in 30 DEG C, take out and impregnate post mold, clear through distilled water
It washes, is freeze-dried, obtains dehumidizer base-material, it is spare；
（3）Take sodium aluminate in mass ratio 2：3：10 are added sodium hydroxide, deionized water, are stirred 30min in 30 DEG C, must mix
Object takes nine water sodium metasilicate in mass ratio 1：5 are added deionized water, obtain mixed liquor, take mixture in mass ratio 3：2 are added mixed liquor
It is stirred 1h, in 400W microwave 20min, is washed through deionized water, filters, takes suction filtration slag；
（4）It takes and filters slag in mass ratio 1：4 are added the cerous nitrate aqueous solution that mass fraction is 9%, pH to 4 are adjusted, in 25 DEG C of work
Change 60min, obtain activator, activator is taken to keep the temperature 2h in 500 DEG C, crushing sieves with 100 mesh sieve, and collects sieving particle, spare；
（5）It is 1 to take methylcellulose mass ratio：2 are added methacrylic acid, obtain mixture A, take N, N- methylene bisacrylamide acyls
Amine in mass ratio 1：5 addition deionized waters are stirred 20min, obtain stirring mixture, take stirring mixture in mass ratio 2：4 add
Enter mixture A, be passed through nitrogen protection, be stirred 15min, the calcium chloride solution for being stirred 2 times of amount of substance is added, in 60
It DEG C is stirred 3h, 15h is stood, obtains standing liquid；
（6）According to the mass fraction, step is taken（4）Spare sieving particle in mass ratio 2：10 are added deionized water, are stirred
1h obtains soak, in crystallization tank, takes step（2）Spare dehumidifying base-material is soaked in soak, in 150 DEG C of microwaves
40min is cooled to room temperature then at 550 DEG C of heat preservation 2h, takes cooling thing in mass ratio 3：2 are added standing liquid, add and stand liquid matter
The ammonium persulfate of amount 1% is stirred 3h in 70 DEG C, stands 15h, dry to get air dewetting agent.
A kind of preparation method of air dewetting agent, the preparation method include the following steps：
（1）Take sodium alginate in mass ratio 1：8 are added distilled water mixing, are stirred 40min in 50 DEG C, mixed liquor are obtained, by matter
Number meter is measured, 30 portions of mixed liquors, 150 parts of silicon nitride powders, 8 parts of Triammonium citrates, 20 parts of amido silicon oil mixing is taken, is placed in ball mill
In, ball milling 5h obtains ball milling material, rotary evaporation, and injection molding obtains base-material；
（2）To base-material surface in mass ratio 5：3 spray concentrations are the calcium chloride solution of 1mol/L, stand 3 days, and demoulding obtains mould material,
Modulus material in mass ratio 1：4 are added grape acid lactone solution, are impregnated in 40 DEG C for 24 hours, take out and impregnate post mold, clear through distilled water
It washes, is freeze-dried, obtains dehumidizer base-material, it is spare；
（3）Take sodium aluminate in mass ratio 3：5：15 are added sodium hydroxide, deionized water, are stirred 40min in 40 DEG C, must mix
Object takes nine water sodium metasilicate in mass ratio 1：7 are added deionized water, obtain mixed liquor, take mixture in mass ratio 3：2 are added mixed liquor
It is stirred 2h, in 400W microwave 25min, is washed through deionized water, filters, takes suction filtration slag；
（4）It takes and filters slag in mass ratio 3：5 are added the cerous nitrate aqueous solution that mass fraction is 9%, pH to 5 are adjusted, in 30 DEG C of work
Change 80min, obtain activator, activator is taken to keep the temperature 3h in 550 DEG C, crushing sieves with 100 mesh sieve, and collects sieving particle, spare；
（5）It is 3 to take methylcellulose mass ratio：4 are added methacrylic acid, obtain mixture A, take N, N- methylene bisacrylamide acyls
Amine in mass ratio 1：7 addition deionized waters are stirred 30min, obtain stirring mixture, take stirring mixture in mass ratio 5：7 add
Enter mixture A, be passed through nitrogen protection, be stirred 20min, the calcium chloride solution for being stirred 4 times of amount of substance is added, in 70
It DEG C is stirred 5h, 18h is stood, obtains standing liquid；
（6）According to the mass fraction, step is taken（4）Spare sieving particle in mass ratio 5：15 are added deionized water, are stirred
2h obtains soak, in crystallization tank, takes step（2）Spare dehumidifying base-material is soaked in soak, in 160 DEG C of microwaves
45min is cooled to room temperature then at 600 DEG C of heat preservation 3h, takes cooling thing in mass ratio 3：2 are added standing liquid, add and stand liquid matter
The ammonium persulfate of amount 3% is stirred 4h in 80 DEG C, stands 18h, dry to get air dewetting agent.
A kind of preparation method of air dewetting agent, the preparation method include the following steps：
（1）Take sodium alginate in mass ratio 1：7 are added distilled water mixing, are stirred 35min in 45 DEG C, mixed liquor are obtained, by matter
Number meter is measured, 25 portions of mixed liquors, 125 parts of silicon nitride powders, 7 parts of Triammonium citrates, 17 parts of amido silicon oil mixing is taken, is placed in ball mill
In, ball milling 4h obtains ball milling material, rotary evaporation, and injection molding obtains base-material；
（2）To base-material surface in mass ratio 4：2 spray concentrations are the calcium chloride solution of 1mol/L, stand 2 days, and demoulding obtains mould material,
Modulus material in mass ratio 1：3 are added grape acid lactone solution, impregnate 21h in 35 DEG C, take out and impregnate post mold, clear through distilled water
It washes, is freeze-dried, obtains dehumidizer base-material, it is spare；
（3）Take sodium aluminate in mass ratio 2：4：13 are added sodium hydroxide, deionized water, are stirred 35min in 35 DEG C, must mix
Object takes nine water sodium metasilicate in mass ratio 1：6 are added deionized water, obtain mixed liquor, take mixture in mass ratio 3：2 are added mixed liquor
It is stirred 1h, in 400W microwave 23min, is washed through deionized water, filters, takes suction filtration slag；
（4）It takes and filters slag in mass ratio 2：4 are added the cerous nitrate aqueous solution that mass fraction is 9%, pH to 4 are adjusted, in 27 DEG C of work
Change 70min, obtain activator, activator is taken to keep the temperature 2h in 525 DEG C, crushing sieves with 100 mesh sieve, and collects sieving particle, spare；
（5）It is 2 to take methylcellulose mass ratio：3 are added methacrylic acid, obtain mixture A, take N, N- methylene bisacrylamide acyls
Amine in mass ratio 1：6 addition deionized waters are stirred 25min, obtain stirring mixture, take stirring mixture in mass ratio 3：5 add
Enter mixture A, be passed through nitrogen protection, be stirred 17min, the calcium chloride solution for being stirred 3 times of amount of substance is added, in 65
It DEG C is stirred 4h, 17h is stood, obtains standing liquid；
（6）According to the mass fraction, step is taken（4）Spare sieving particle in mass ratio 3：13 are added deionized water, are stirred
1h obtains soak, in crystallization tank, takes step（2）Spare dehumidifying base-material is soaked in soak, in 155 DEG C of microwaves
43min is cooled to room temperature then at 575 DEG C of heat preservation 2h, takes cooling thing in mass ratio 3：2 are added standing liquid, add and stand liquid matter
The ammonium persulfate of amount 2% is stirred 3h in 75 DEG C, stands 17h, dry to get air dewetting agent.
Comparative example：The dehumidizer of Nanjing company production.
Under conditions of dehumidizer obtained by example and the dehumidizer of comparative example are placed on 25 DEG C and 80%RH respectively, dehumidizer
The plank of 10 × 10cm is placed on side, its hygroscopic capacity is tested after one month and observes packaging bag rupture event.Test result is shown in Table 1.
Table 1：
| Test event | Example 1 | Example 2 | Example 3 | Reference examples |
| Hygroscopic capacity（g） | 253 | 234 | 236 | 151~167 |
| Packaging bag rupture event | Crack-free | Crack-free | Crack-free | Rupture |
In summary, dehumidizer hygroscopic capacity of the invention is big and is not easily broken and causes to corrode, and is worth promoting.
Claims (1)
1. a kind of preparation method of air dewetting agent, which is characterized in that the preparation method includes the following steps：
（1）Take sodium alginate in mass ratio 1：5 ~ 8 are added distilled water mixing, are stirred in 40 ~ 50 DEG C, obtain mixed liquor, by matter
Number meter is measured, takes 20 ~ 30 portions of mixed liquors, 100 ~ 150 parts of silicon nitride powders, 3 ~ 8 parts of Triammonium citrates, 15 ~ 20 parts of amido silicon oils mixed
It closes, is placed in ball mill, ball milling, obtains ball milling material, rotary evaporation, injection molding obtains base-material；
（2）To base-material surface in mass ratio 3 ~ 5：1 ~ 3 spray concentration is the calcium chloride solution of 1mol/L, is stood, and demoulding obtains mould
Material, modulus material in mass ratio 1：2 ~ 4 are added grape acid lactone solution, in 30 ~ 40 DEG C of immersions, take out and impregnate post mold, through distillation
Water cleans, and freeze-drying obtains dehumidizer base-material, spare；
（3）Take sodium aluminate in mass ratio 2 ~ 3：3~5：10 ~ 15 are added sodium hydroxide, deionized water, are stirred in 30 ~ 40 DEG C,
Mixture is obtained, nine water sodium metasilicate in mass ratio 1 are taken：5 ~ 7 are added deionized water, obtain mixed liquor, take mixture in mass ratio 3：2 add
Enter mixed liquor to be stirred, in 400W microwaves, be washed through deionized water, filters, take suction filtration slag；
（4）It takes and filters slag in mass ratio 1 ~ 3：4 ~ 5 are added the cerous nitrate aqueous solution that mass fraction is 9%, and ammonium hydroxide is added and adjusts pH
To 4 ~ 5, in 25 ~ 30 DEG C of activation, activator is obtained, takes activator in 500 ~ 550 DEG C of heat preservations, crushing sieves with 100 mesh sieve, and collects sieving
Grain, it is spare；
（5）It is 1 ~ 3 to take methylcellulose mass ratio：2 ~ 4 are added methacrylic acid, obtain mixture A, take N, N- di-2-ethylhexylphosphine oxides third
Acrylamide in mass ratio 1：5 ~ 7 addition deionized waters are stirred, and obtain stirring mixture, take stirring mixture in mass ratio 2 ~ 5：
4 ~ 7 are added mixture A, are passed through nitrogen protection, are stirred, add the calcium chloride solution for being stirred 2 ~ 4 times of amount of substance, in
60 ~ 70 DEG C are stirred, and stand, obtain standing liquid；
（6）According to the mass fraction, step is taken（4）Spare sieving particle in mass ratio 2 ~ 5：10 ~ 15 are added deionized water, stirring
1 ~ 2h is mixed, soak is obtained, in crystallization tank, takes step（2）Spare dehumidifying base-material is soaked in soak, in 150 ~ 160
DEG C 40 ~ 45min of microwave is cooled to room temperature then at 550 ~ 600 DEG C of 2 ~ 3h of heat preservation, takes cooling thing in mass ratio 3：2 are added standing
Liquid adds the ammonium persulfate for standing liquid quality 1 ~ 3%, is stirred in 70 ~ 80 DEG C, stands, dry to get air dewetting agent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109847541A (en) * | 2019-01-24 | 2019-06-07 | 中国人民解放军92228部队 | A kind of high efficiency composition hygroscopic agent and preparation method thereof |
| CN114130165A (en) * | 2020-09-03 | 2022-03-04 | 中国科学院大连化学物理研究所 | Recyclable ionic gel dehumidifying bag |
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