CN108485607A - A kind of preparation method of dust fixing agent - Google Patents
A kind of preparation method of dust fixing agent Download PDFInfo
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- CN108485607A CN108485607A CN201810569216.8A CN201810569216A CN108485607A CN 108485607 A CN108485607 A CN 108485607A CN 201810569216 A CN201810569216 A CN 201810569216A CN 108485607 A CN108485607 A CN 108485607A
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Abstract
The invention discloses a kind of preparation methods of dust fixing agent, belong to technical field of polymer materials.Gel and water are mixed in three-necked flask,And calcium chloride is added into three-necked flask,Ferrous sulfate and porous microsphere,The pH to 2.0~2.4 of material in three-necked flask is adjusted with hydrochloric acid,And in temperature be 40~45 DEG C,After rotating speed is stirred 50~80min under conditions of being 350~500r/min,Blank must be mixed,Mixing blank is mixed with dopamine solution,In temperature be 45~55 DEG C,Under conditions of rotating speed is 200~300r/min,After being stirred,And in being 55~75 DEG C for temperature,Rotating speed is 120~150r/min,After the moisture content of concentrated by rotary evaporation to mixing blank and dopamine solution mixture is 10~15% under conditions of pressure is 500~600kPa,Adjust pH to 4.2~4.8,Filtering,It is 2~5% to be dried under vacuum to moisture content,Obtain dust fixing agent.Dust fixing agent prepared by technical solution of the present invention has the characteristics that excellent solid dust effect, has broad prospects in the development of high molecular material industry.
Description
Technical field
The invention discloses a kind of preparation methods of dust fixing agent, belong to technical field of polymer materials.
Background technology
As surface mine production intensity continues to increase, the increasingly raising of Mechanization Level necessarily causes in production operation
In dust pollution necessarily cause the dust pollution in production operation to be on the rise, the life of the mankind will necessarily be brought seriously
Influence.It is most with number of the relevant pneumoconiosis of coal in all kinds of Pneumoconiosis Patients, ratio also highest.Every year because of pneumoconiosis
Caused by direct economic loss be up to more than 8,000,000,000 yuan.In addition, the dust-producing amount of transporting equipment is first of each surface mining equipment, it is ring
The maximum dust pollution source in border.In terms of the research of dust suppressant, each state all is making largely to work.In the 1960s, changing
The research for learning dust-settling technology deepens continuously, and foreign countries start surfactant being applied to mine depositing dust.In the past 30 years, with people
The raising of environmental consciousness and the development of modern chemical industry, depth and range about the research of chemical dust fixing agent extend rapidly.
Not according to field of employment and effect, chemical dust fixing agent can be divided into three classes, and be respectively:Wetting agent, binder and flocculating agent, suppression
The mechanism of dust processed is wetting, consolidation and cohesion respectively.Studies show that, the dust fixing agent researched and developed at present is cohesive mostly
Agent (50%) and wetting agent (44%).Wetting agent is mainly made of surfactant and certain inorganic salts, halide, inorganic binder
Mainly there are halide, calcium oxide, coal ash, soil, clay, gypsum, kaolin, acid etc., organic binder mainly to have crude oil, olive
Oily waste residue, petroleum residual oil, lignin derivative, cinder oil, pitch, paraffin, polymer etc.;Flocculating agent by high molecular polymer,
The material compositions such as magnesium chloride, calcium chloride.Chemistry dust fixing agent is more and more studied and is applied at present, but still there are many
The problem of incomplete place, traditional dust fixing agent can not be further increased there is also anti-dust effect.
Therefore, how to improve the shortcomings that anti-dust effect existing for traditional dust fixing agent can not further increase, in the hope of visiting
Rope develops the dust fixing agent with good comprehensive performance.
Invention content
The present invention solves the technical problem of：It can not be further for the anti-dust effect existing for traditional dust fixing agent
The shortcomings that raising, provides a kind of preparation method of dust fixing agent.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of preparation method of dust fixing agent, specific preparation process are：
（1）By ammonium hydroxide and surfactant in mass ratio 20：1~30：1 mixing, and 0.02~0.05 times of ammonium hydroxide quality is added
Ferroso-ferric oxide after being stirred, obtains ammonia water mixture, by ammonia water mixture and gelatin in mass ratio 25：1~35：1 mixing,
It is constant-temperature enclosed to be stirred, obtain aqueous mixture；
（2）By paraffin and surfactant in mass ratio 40：1~50：1 mixing, obtains oil mixture, by oil mixture quality
0.5~0.6 times of aqueous mixture instills in oil mixture, and stirring and emulsifying obtains emulsifying mixt, by emulsifying mixt quality
0.05~0.08 times of ethyl orthosilicate mixture is added in emulsifying mixt in three times, is stirred, and filters, washing, vacuum
It is dry, obtain porous microsphere；
（3）It counts, weighs successively in parts by weight：100~140 parts of polyvinyl alcohol, 70~85 parts of gelatin, 600~750 parts of water, 30
~50 parts of glutaraldehyde water solutions and 10~30 parts of hydrochloric acid, polyvinyl alcohol is mixed with water, and heating stirring obtains poly-vinyl alcohol solution,
Poly-vinyl alcohol solution is cooled down, and the polyvinyl alcohol after cooling is mixed with gelatin, and sequentially adds hydrochloric acid and glutaraldehyde is water-soluble
Liquid, after being stirred, stripping and slicing is washed, dry, obtains gel；
（4）By gel and water in mass ratio 1：8~1：10 mixing, and the calcium chloride of 1~2 times of gel quality, gel quality is added
The porous microsphere of 0.1~0.2 times of 0.3~0.4 times of ferrous sulfate and gel quality adjusts pH to 2.0~2.4, is stirred
Afterwards, mixing blank is obtained, by mixing blank and dopamine solution in mass ratio 5：1~8：1 mixing, concentrated by rotary evaporation to moisture content are 10
After~15%, pH to 4.2~4.8 is adjusted, filtering, it is 2~5% to be dried under vacuum to moisture content, obtains dust fixing agent.
The surfactant is Tween-80, any one in Tween-60 or Arlacel-80.
Step（2）The paraffin is the mineral wax mixture that carbon atom number is 25~30.
Step（2）The ethyl orthosilicate mixture is by ethyl orthosilicate and ethyl alcohol in mass ratio 2：1~3：1 mixing,
Obtain ethyl orthosilicate mixture.
The beneficial effects of the invention are as follows：
（1）Porous microsphere is added when preparing dust fixing agent by the present invention, and first, porous microsphere adds four oxygen in preparation process
Change three-iron, to make porous microsphere that there is magnetism, after being added in product, can make product that there is magnetism, have in adsorbable air
Magnetic dust can to improve the solid dust efficiency of product, and since product adds dopamine in preparation process
Make charge on porous microsphere band, and due to the porosity characteristic of porous microsphere, to make the solid dust efficiency of porous microsphere improve,
And then the solid dust performance of product is made to improve；
（2）The present invention uses gel when preparing dust fixing agent, and calcium chloride and ferrous sulfate are added simultaneously, on the one hand, gel
There is gelatin to be constituted for main component, after being handled through dopamine, charge can be taken on surface, to make the solid dust performance of product
It improves, on the other hand, since gel is sensitive to pH, in use, due to the hygroscopicity of calcium chloride, ferrous sulfate dissolves,
So that larger acidity is presented in product, and to make gel expand, internal void exposure, to make the adsorbing powder dust rate of product
It improves, and then the solid dust performance of product is made to improve, when increasing with moisture, pH of latex gel increases, gel shrinks, to
So that internal fixed dust can not be scattered in air again, and then the solid dust effect of product is made to improve.
Specific implementation mode
Ammonium hydroxide and surfactant in mass ratio 20 by mass fraction for 20~28%：1~30：1 is mixed in flask,
And the ferroso-ferric oxide of 0.02~0.05 times of ammonium hydroxide quality is added into flask, and it is 40~45 DEG C in temperature, rotating speed is 300~
After being stirred 30~40min under conditions of 500r/min, ammonia water mixture is obtained, in mass ratio with gelatin by ammonia water mixture
25：1~35：1 mixing, in temperature be 60~65 DEG C, rotating speed be 300~350r/min under conditions of it is constant-temperature enclosed be stirred to
Gelatin is completely dissolved, and obtains aqueous mixture；By paraffin and surfactant in mass ratio 40：1~50：1 is mixed in conical flask,
It is 60~68 DEG C in temperature, under conditions of rotating speed is 200~400r/min, after being stirred 20~40min, obtains oil phase mixing
Object instills 0.5~0.6 times of aqueous mixture of oil mixture quality in oil mixture with the rate of 2~8mL/min,
It is 40~45 DEG C in temperature, under conditions of rotating speed is 2000~3000r/min after 15~30min of stirring and emulsifying, mixing must be emulsified
Object 0.05~0.08 times of ethyl orthosilicate mixture of emulsifying mixt quality is added in emulsifying mixt in three times, every time
Interval 1h is added, is 1~5 DEG C in temperature, rotating speed is mistake after 800~1500r/min is stirred 12~15h after addition
Filter, obtains filter cake, and filter cake is first used petroleum ether 5~8 times, then after wash 3~8 times with absolute ethyl alcohol, is dried in vacuo, obtains porous
Microballoon；It counts, weighs successively in parts by weight：100~140 parts of polyvinyl alcohol, 70~85 parts of gelatin, 600~750 parts of water, 30~
The hydrochloric acid that the glutaraldehyde water solution and 10~30 parts of mass fractions that 50 parts of mass fractions are 20~30% are 30~35%, by polyethylene
Alcohol is mixed with water, is 88~98 DEG C in temperature, rotating speed is after the item of 200~400r/min is stirred 30~80min, to obtain poly- second
Poly-vinyl alcohol solution is cooled to 60~65 DEG C, and the polyvinyl alcohol after cooling is mixed in gelatin in beaker by enolate solution,
And the hydrochloric acid that mass fraction is 30~35% and the glutaraldehyde water solution that mass fraction is 20~30% is added into beaker successively, in
Temperature is 28~38 DEG C, and after rotating speed is stirred 10~12h under conditions of being 250~300r/min, filtering must pre-process solidifying
Glue will pre-process gel stripping and slicing, and be washed with deionized 5~6 days, while change a deionized water every 10~12h, will wash
Gel piece after washing obtains gel after being dried in vacuo 3~5h under room temperature；By gel and water in mass ratio 1：8~1：10 is mixed
Together in three-necked flask, and the calcium chloride of 1~2 times of gel quality is added into three-necked flask, 0.1~0.2 times of gel quality
The porous microsphere of 0.3~0.4 times of ferrous sulfate and gel quality, the hydrochloric acid for being 20~40% with quality powder score adjust three mouthfuls of burnings
The pH of vial material is 40~45 DEG C to 2.0~2.4, and in temperature, and rotating speed is stirred under conditions of being 350~500r/min
After 50~80min, mixing blank is obtained, the dopamine solution in mass ratio 5 that blank and mass fraction are 10~18% will be mixed：1~
8：1 mixing, in temperature be 45~55 DEG C, rotating speed be 200~300r/min under conditions of, after being stirred 30~60min, and in
It it is 55~75 DEG C for temperature, rotating speed is 120~150r/min, and concentrated by rotary evaporation extremely mixes under conditions of pressure is 500~600kPa
After the moisture content of blank and dopamine solution mixture is 10~15%, concentrate is obtained, the ammonium hydroxide for being 20~28% with mass fraction
After the pH to 4.2~4.8 for adjusting concentrate, filtering obtains pretreatment dust fixing agent, and pretreatment dust fixing agent is dried under vacuum to and is contained
Water rate is 2~5%, obtains dust fixing agent.The surfactant is Tween-80, any one in Tween-60 or Arlacel-80.Institute
It is the mineral wax mixture that carbon atom number is 25~30 to state paraffin.The ethyl orthosilicate mixture is by ethyl orthosilicate and ethyl alcohol
In mass ratio 2：1~3：1 mixing, obtains ethyl orthosilicate mixture.
Ammonium hydroxide and surfactant in mass ratio 30 by mass fraction for 28%：1 is mixed in flask, and into flask
The ferroso-ferric oxide of 0.05 times of ammonium hydroxide quality is added, is 45 DEG C in temperature, rotating speed is stirred under conditions of being 500r/min
After 40min, ammonia water mixture is obtained, by ammonia water mixture and gelatin in mass ratio 35：1 mixing is 65 DEG C in temperature, and rotating speed is
Constant-temperature enclosed be stirred to gelatin is completely dissolved under conditions of 350r/min, obtains aqueous mixture；By paraffin and surface-active
Agent in mass ratio 50：1 is mixed in conical flask, is 68 DEG C in temperature, under conditions of rotating speed is 400r/min, is stirred
After 40min, oil mixture is obtained, 0.6 times of aqueous mixture of oil mixture quality is instilled into oil phase with the rate of 8mL/min
In mixture, it is 45 DEG C in temperature, under conditions of rotating speed is 3000r/min after stirring and emulsifying 30min, obtains emulsifying mixt, it will
The ethyl orthosilicate mixture of 0.08 times of emulsifying mixt quality is added in emulsifying mixt in three times, and interval 1h is added every time,
It it is 5 DEG C in temperature, rotating speed is after 1500r/min is stirred 15h, and filtering obtains filter cake, filter cake is first used stone after addition
Oily ether washs 8 times, then after wash 8 times with absolute ethyl alcohol, is dried in vacuo, obtains porous microsphere；It counts, weighs successively in parts by weight：
140 parts of polyvinyl alcohol, 85 parts of gelatin, 750 parts of water, the glutaraldehyde water solution and 30 parts of mass fractions that 50 parts of mass fractions are 30%
For 35% hydrochloric acid, polyvinyl alcohol is mixed with water, is 98 DEG C in temperature, rotating speed is that the item of 400r/min is stirred 80min
Afterwards, poly-vinyl alcohol solution is obtained, poly-vinyl alcohol solution is cooled to 65 DEG C, and the polyvinyl alcohol after cooling is mixed in burning with gelatin
In cup, and the hydrochloric acid that mass fraction is 35% and the glutaraldehyde water solution that mass fraction is 30%, Yu Wen is added into beaker successively
Degree is 38 DEG C, and after rotating speed is stirred 12h under conditions of being 2300r/min, filtering obtains pretreatment gel, will pre-process gel
Stripping and slicing, and be washed with deionized 6 days, while a deionized water is changed every 12h, by the gel piece after washing in room temperature condition
After lower vacuum drying 5h, gel is obtained；By gel and water in mass ratio 1：10 are mixed in three-necked flask, and add into three-necked flask
Enter the calcium chloride of 2 times of gel quality, the porous microsphere of 0.4 times of the ferrous sulfate and gel quality that 0.2 times of gel quality uses quality
The hydrochloric acid that powder score is 40% adjusts the pH of material in three-necked flask to 2.4, and is 45 DEG C in temperature, and rotating speed is 500r/min's
Under the conditions of be stirred 80min after, obtain mixing blank, the dopamine solution that blank and mass fraction are 18% will be mixed and press quality
Than 8：1 mixing, in temperature be 55 DEG C, under conditions of rotating speed is 300r/min, after being stirred 60min, and in being 75 for temperature
DEG C, rotating speed 150r/min, concentrated by rotary evaporation extremely mixing blank and dopamine solution mixture under conditions of pressure is 600kPa
After moisture content is 15%, concentrate is obtained, after the ammonium hydroxide for being 28% with mass fraction adjusts the pH to 4.8 of concentrate, filtering obtains pre- place
Dust fixing agent is managed, it is 5% that pretreatment dust fixing agent, which is dried under vacuum to moisture content, obtains dust fixing agent.The surfactant is to spit
Temperature -80.The paraffin is the mineral wax mixture that carbon atom number is 30.The ethyl orthosilicate mixture be by ethyl orthosilicate with
Ethyl alcohol in mass ratio 3：1 mixing, obtains ethyl orthosilicate mixture.
Ammonium hydroxide and surfactant in mass ratio 30 by mass fraction for 28%：1 is mixed in flask, and into flask
The ferroso-ferric oxide of 0.05 times of ammonium hydroxide quality is added, is 45 DEG C in temperature, rotating speed is stirred under conditions of being 500r/min
After 40min, ammonia water mixture is obtained, by ammonia water mixture and gelatin in mass ratio 35：1 mixing is 65 DEG C in temperature, and rotating speed is
Constant-temperature enclosed be stirred to gelatin is completely dissolved under conditions of 350r/min, obtains aqueous mixture；It counts in parts by weight, successively
It weighs：140 parts of polyvinyl alcohol, 85 parts of gelatin, 750 parts of water, the glutaraldehyde water solution and 30 parts of quality that 50 parts of mass fractions are 30%
The hydrochloric acid that score is 35%, polyvinyl alcohol is mixed with water, is 98 DEG C in temperature, rotating speed is that the item of 400r/min is stirred
After 80min, poly-vinyl alcohol solution is obtained, poly-vinyl alcohol solution is cooled to 65 DEG C, and the polyvinyl alcohol after cooling is mixed with gelatin
Together in beaker, and the hydrochloric acid that mass fraction is 35% is added into beaker successively and the glutaraldehyde that mass fraction is 30% is water-soluble
Liquid is 38 DEG C in temperature, and after rotating speed is stirred 12h under conditions of being 2300r/min, filtering obtains pretreatment gel, will locate in advance
Gel stripping and slicing is managed, and is washed with deionized 6 days, while a deionized water is changed every 12h, by the gel piece after washing in room
After being dried in vacuo 5h under the conditions of temperature, gel is obtained；By gel and water in mass ratio 1：10 are mixed in three-necked flask, and are burnt to three mouthfuls
It is added the calcium chloride of 2 times of gel quality in bottle, the hydrochloric acid tune that the ferrous sulfate quality powder score of 0.2 times of gel quality is 40%
The pH of material in three-necked flask is saved to 2.4, and is 45 DEG C in temperature, rotating speed is stirred 80min under conditions of being 500r/min
Afterwards, mixing blank is obtained, the dopamine solution in mass ratio 8 that blank and mass fraction are 18% will be mixed：1 mixing, in temperature be 55
DEG C, under conditions of rotating speed is 300r/min, after being stirred 60min, and in being 75 DEG C for temperature, rotating speed 150r/min is pressed
After the moisture content of concentrated by rotary evaporation to mixing blank and dopamine solution mixture is 15% under conditions of power is 600kPa, it must concentrate
Object, after the ammonium hydroxide for being 28% with mass fraction adjusts the pH to 4.8 of concentrate, filtering obtains pretreatment dust fixing agent, will pre-process
It is 5% that dust fixing agent, which is dried under vacuum to moisture content, obtains dust fixing agent.The surfactant is Tween-80.
Ammonium hydroxide and surfactant in mass ratio 30 by mass fraction for 28%：1 is mixed in flask, and into flask
The ferroso-ferric oxide of 0.05 times of ammonium hydroxide quality is added, is 45 DEG C in temperature, rotating speed is stirred under conditions of being 500r/min
After 40min, ammonia water mixture is obtained, by ammonia water mixture and gelatin in mass ratio 35：1 mixing is 65 DEG C in temperature, and rotating speed is
Constant-temperature enclosed be stirred to gelatin is completely dissolved under conditions of 350r/min, obtains aqueous mixture；By paraffin and surface-active
Agent in mass ratio 50：1 is mixed in conical flask, is 68 DEG C in temperature, under conditions of rotating speed is 400r/min, is stirred
After 40min, oil mixture is obtained, 0.6 times of aqueous mixture of oil mixture quality is instilled into oil phase with the rate of 8mL/min
In mixture, it is 45 DEG C in temperature, under conditions of rotating speed is 3000r/min after stirring and emulsifying 30min, obtains emulsifying mixt, it will
The ethyl orthosilicate mixture of 0.08 times of emulsifying mixt quality is added in emulsifying mixt in three times, and interval 1h is added every time,
It it is 5 DEG C in temperature, rotating speed is after 1500r/min is stirred 15h, and filtering obtains filter cake, filter cake is first used stone after addition
Oily ether washs 8 times, then after wash 8 times with absolute ethyl alcohol, is dried in vacuo, obtains porous microsphere；It counts, weighs successively in parts by weight：
140 parts of polyvinyl alcohol, 85 parts of gelatin, 750 parts of water, the glutaraldehyde water solution and 30 parts of mass fractions that 50 parts of mass fractions are 30%
For 35% hydrochloric acid, polyvinyl alcohol is mixed with water, is 98 DEG C in temperature, rotating speed is that the item of 400r/min is stirred 80min
Afterwards, poly-vinyl alcohol solution is obtained, poly-vinyl alcohol solution is cooled to 65 DEG C, and the polyvinyl alcohol after cooling is mixed in burning with gelatin
In cup, and the hydrochloric acid that mass fraction is 35% and the glutaraldehyde water solution that mass fraction is 30%, Yu Wen is added into beaker successively
Degree is 38 DEG C, and after rotating speed is stirred 12h under conditions of being 2300r/min, filtering obtains pretreatment gel, will pre-process gel
Stripping and slicing, and be washed with deionized 6 days, while a deionized water is changed every 12h, by the gel piece after washing in room temperature condition
After lower vacuum drying 5h, gel is obtained；By gel and water in mass ratio 1：10 are mixed in three-necked flask, and add into three-necked flask
The porous microsphere for entering 0.4 times of the calcium chloride and gel quality of 2 times of gel quality, the hydrochloric acid for being 40% with quality powder score adjust three
The pH of material is 45 DEG C to 2.4, and in temperature in mouth flask, after rotating speed is stirred 80min under conditions of being 500r/min, is obtained
Blank is mixed, the dopamine solution in mass ratio 8 that blank and mass fraction are 18% will be mixed：1 mixing is 55 DEG C in temperature, turns
Under conditions of speed is 300r/min, after being stirred 60min, and in being 75 DEG C for temperature, rotating speed 150r/min, pressure is
After the moisture content of concentrated by rotary evaporation to mixing blank and dopamine solution mixture is 15% under conditions of 600kPa, concentrate is obtained, is used
After the ammonium hydroxide that mass fraction is 28% adjusts the pH to 4.8 of concentrate, filtering obtains pretreatment dust fixing agent, by the solid dust of pretreatment
It is 5% that agent, which is dried under vacuum to moisture content, obtains dust fixing agent.The surfactant is Tween-80.The paraffin is carbon atom number
For 30 mineral wax mixture.The ethyl orthosilicate mixture is by ethyl orthosilicate and ethyl alcohol in mass ratio 3：1 mixing, obtains just
Silester mixture.
Ammonium hydroxide and surfactant in mass ratio 30 by mass fraction for 28%：1 is mixed in flask, and into flask
The ferroso-ferric oxide of 0.05 times of ammonium hydroxide quality is added, is 45 DEG C in temperature, rotating speed is stirred under conditions of being 500r/min
After 40min, ammonia water mixture is obtained, by ammonia water mixture and gelatin in mass ratio 35：1 mixing is 65 DEG C in temperature, and rotating speed is
Constant-temperature enclosed be stirred to gelatin is completely dissolved under conditions of 350r/min, obtains aqueous mixture；By paraffin and surface-active
Agent in mass ratio 50：1 is mixed in conical flask, is 68 DEG C in temperature, under conditions of rotating speed is 400r/min, is stirred
After 40min, oil mixture is obtained, 0.6 times of aqueous mixture of oil mixture quality is instilled into oil phase with the rate of 8mL/min
In mixture, it is 45 DEG C in temperature, under conditions of rotating speed is 3000r/min after stirring and emulsifying 30min, obtains emulsifying mixt, it will
The ethyl orthosilicate mixture of 0.08 times of emulsifying mixt quality is added in emulsifying mixt in three times, and interval 1h is added every time,
It it is 5 DEG C in temperature, rotating speed is after 1500r/min is stirred 15h, and filtering obtains filter cake, filter cake is first used stone after addition
Oily ether washs 8 times, then after wash 8 times with absolute ethyl alcohol, is dried in vacuo, obtains porous microsphere；It counts, weighs successively in parts by weight：
140 parts of polyvinyl alcohol, 85 parts of gelatin, 750 parts of water, the glutaraldehyde water solution and 30 parts of mass fractions that 50 parts of mass fractions are 30%
For 35% hydrochloric acid, polyvinyl alcohol is mixed with water, is 98 DEG C in temperature, rotating speed is that the item of 400r/min is stirred 80min
Afterwards, poly-vinyl alcohol solution is obtained, poly-vinyl alcohol solution is cooled to 65 DEG C, and the polyvinyl alcohol after cooling is mixed in burning with gelatin
In cup, and the hydrochloric acid that mass fraction is 35% and the glutaraldehyde water solution that mass fraction is 30%, Yu Wen is added into beaker successively
Degree is 38 DEG C, and after rotating speed is stirred 12h under conditions of being 2300r/min, filtering obtains pretreatment gel, will pre-process gel
Stripping and slicing, and be washed with deionized 6 days, while a deionized water is changed every 12h, by the gel piece after washing in room temperature condition
After lower vacuum drying 5h, gel is obtained；By gel and water in mass ratio 1：10 are mixed in three-necked flask, and add into three-necked flask
Enter the calcium chloride of 2 times of gel quality, the porous microsphere of 0.4 times of the ferrous sulfate and gel quality that 0.2 times of gel quality uses quality
The hydrochloric acid that powder score is 40% adjusts the pH of material in three-necked flask to 2.4, and is 45 DEG C in temperature, and rotating speed is 500r/min's
Under the conditions of be stirred 80min after, obtain mixing blank, in temperature be 55 DEG C, rotating speed be 300r/min under conditions of, be stirred
After 60min, and in being 75 DEG C for temperature, rotating speed 150r/min, concentrated by rotary evaporation is to mixing base under conditions of pressure is 600kPa
After the moisture content of material is 15%, concentrate is obtained, after the ammonium hydroxide for being 28% with mass fraction adjusts the pH to 4.8 of concentrate, filtering obtains
Dust fixing agent is pre-processed, it is 5% that pretreatment dust fixing agent, which is dried under vacuum to moisture content, obtains dust fixing agent.The surfactant
For Tween-80.The paraffin is the mineral wax mixture that carbon atom number is 30.The ethyl orthosilicate mixture is by positive silicic acid second
Ester and ethyl alcohol in mass ratio 3：1 mixing, obtains ethyl orthosilicate mixture.
Comparative example：The dust fixing agent of Chemical Co., Ltd. of Taiyuan City production.
The dust fixing agent and comparative example product of example 1 to 4 gained of example are subjected to performance detection, specific detection method is such as
Under：
It is reacted by viscosity, the bigger coalescence of viscosity is better, and solidification effect is stronger, and viscosity is examined with NDJ-5S Digital Viscometers
Test block.
Specific testing result is as shown in table 1：
1 dust fixing agent performance test results of table
| Detection project | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Viscosity/（mPa·s） | 11 | 9.54 | 7.95 | 5.26 | 0.79 |
By 1 testing result of table it is found that dust fixing agent prepared by technical solution of the present invention has the characteristics that excellent solid dust effect,
It has broad prospects in the development of high molecular material industry.
Claims (4)
1. a kind of preparation method of dust fixing agent, which is characterized in that specifically preparation process is：
（1）By ammonium hydroxide and surfactant in mass ratio 20：1~30：1 mixing, and 0.02~0.05 times of ammonium hydroxide quality is added
Ferroso-ferric oxide after being stirred, obtains ammonia water mixture, by ammonia water mixture and gelatin in mass ratio 25：1~35：1 mixing,
It is constant-temperature enclosed to be stirred, obtain aqueous mixture；
（2）By paraffin and surfactant in mass ratio 40：1~50：1 mixing, obtains oil mixture, by oil mixture quality
0.5~0.6 times of aqueous mixture instills in oil mixture, and stirring and emulsifying obtains emulsifying mixt, by emulsifying mixt quality
0.05~0.08 times of ethyl orthosilicate mixture is added in emulsifying mixt in three times, is stirred, and filters, washing, vacuum
It is dry, obtain porous microsphere；
（3）It counts, weighs successively in parts by weight：100~140 parts of polyvinyl alcohol, 70~85 parts of gelatin, 600~750 parts of water, 30
~50 parts of glutaraldehyde water solutions and 10~30 parts of hydrochloric acid, polyvinyl alcohol is mixed with water, and heating stirring obtains poly-vinyl alcohol solution,
Poly-vinyl alcohol solution is cooled down, and the polyvinyl alcohol after cooling is mixed with gelatin, and sequentially adds hydrochloric acid and glutaraldehyde is water-soluble
Liquid, after being stirred, stripping and slicing is washed, dry, obtains gel；
（4）By gel and water in mass ratio 1：8~1：10 mixing, and the calcium chloride of 1~2 times of gel quality, gel quality is added
The porous microsphere of 0.1~0.2 times of 0.3~0.4 times of ferrous sulfate and gel quality adjusts pH to 2.0~2.4, is stirred
Afterwards, mixing blank is obtained, by mixing blank and dopamine solution in mass ratio 5：1~8：1 mixing, concentrated by rotary evaporation to moisture content are 10
After~15%, pH to 4.2~4.8 is adjusted, filtering, it is 2~5% to be dried under vacuum to moisture content, obtains dust fixing agent.
2. a kind of preparation method of dust fixing agent according to claim 1, it is characterised in that：The surfactant is to spit
Temperature -80, any one in Tween-60 or Arlacel-80.
3. a kind of preparation method of dust fixing agent according to claim 1, it is characterised in that：Step（2）The paraffin is
The mineral wax mixture that carbon atom number is 25~30.
4. a kind of preparation method of dust fixing agent according to claim 1, it is characterised in that：Step（2）The positive silicic acid
Ethyl ester mixture is by ethyl orthosilicate and ethyl alcohol in mass ratio 2：1~3：1 mixing, obtains ethyl orthosilicate mixture.
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| CN1262146A (en) * | 1999-01-25 | 2000-08-09 | 南开大学 | Modified natural macromolecular compound adsorbent and application thereof |
| CN101016448A (en) * | 2007-02-07 | 2007-08-15 | 周正平 | Dust fixing agent |
| CN101280062A (en) * | 2008-05-15 | 2008-10-08 | 同济大学 | Porous magnetic gelatine microsphere and preparation thereof |
| CN105925247A (en) * | 2016-04-26 | 2016-09-07 | 河北西江环保科技有限公司 | Magnetic dust suppressant, preparation method thereof and metal mining powder dust suppression method |
| CN106479101A (en) * | 2015-08-25 | 2017-03-08 | 南京理工大学 | A kind of moisture-absorbing moisture-keeping type is combined small particle Fugitive dust inhibiting agent and preparation method thereof |
| CN106860422A (en) * | 2015-12-10 | 2017-06-20 | 中国科学院大连化学物理研究所 | Alginic acid alkali-polycation microcapsules and its for bioactivator embedding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1262146A (en) * | 1999-01-25 | 2000-08-09 | 南开大学 | Modified natural macromolecular compound adsorbent and application thereof |
| CN101016448A (en) * | 2007-02-07 | 2007-08-15 | 周正平 | Dust fixing agent |
| CN101280062A (en) * | 2008-05-15 | 2008-10-08 | 同济大学 | Porous magnetic gelatine microsphere and preparation thereof |
| CN106479101A (en) * | 2015-08-25 | 2017-03-08 | 南京理工大学 | A kind of moisture-absorbing moisture-keeping type is combined small particle Fugitive dust inhibiting agent and preparation method thereof |
| CN106860422A (en) * | 2015-12-10 | 2017-06-20 | 中国科学院大连化学物理研究所 | Alginic acid alkali-polycation microcapsules and its for bioactivator embedding |
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