CN108424487A - A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster and preparation method thereof - Google Patents
A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2688—Copolymers containing at least three different monomers
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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Abstract
The invention discloses a kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster, by 20 25 parts of styrene, 25 30 parts of isobutyl acrylate, 45 parts of function monomer, 35 parts of emulsifier, 68 parts of organosilicon, 46 parts of Ludox, 40 50 parts of deionized water, 0.4 0.7 parts of potassium peroxydisulfate, 0.2 0.5 parts of compositions of 0.4 0.7 parts of sodium bicarbonate and polyvinyl alcohol, with good dispersion, solid content is high, stability is high, good weatherability and the characteristics of the intensity of desulfurated plaster product can be improved under certain condition, simultaneously, the invention also discloses the preparation methods of the organic-silicon-modified emulsion water-proof agent of desulfurated plaster.
Description
Technical field
The present invention relates to chemical industry and field of material technology, and in particular to a kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster
And preparation method thereof.
Background technology
Desulfurated plaster belongs to air-setting material, is suitble to do materials for wall, extensive, the material energy consumption with raw material sources
Low, the advantages that processing performance is good.But desulfurated plaster product there are one poor water resistance deadly defect, after absorbing water intensity damage
It loses up to 75%, and buckling deformation easily occurs, application is very restricted, thus water-resistant type desulfurated plaster is ground
Study carefully always domestic and international quite valued project.To solve strength reduction after desulfurated plaster makes moist, the water resistances such as easy buckling deformation
The problem of difference, various countries take various approach and measure carries out the research of desulfurated plaster water proofing property, but totally can be summarized as three
A aspect：On the one hand it is in the coating of desulfurated plaster surface or brushing waterproof material；On the other hand it is that mill is added in desulfurated plaster
Thin inorganic material improves the water resistance of desulfurated plaster；The third aspect is the admixture emulsion type waterproofing agent in desulfurated plaster, is improved
The water resistance of desulfurated plaster.
Publication number：The Chinese invention patent application (publication date on February 05th, 2014) of CN103553415A discloses stone
Cream product cationic emulsified bitumen waterproofing agent, this method are coated surface, are carried out at waterproof to plastering by way of dipping
Reason, but this method, there is no the water-fast sex chromosome mosaicism for fundamentally solving gypsum, waterproof effect does not have permanence；It is open
Number：The Chinese invention patent application (publication date on 08 14th, 2013) of CN103242018A discloses a kind of desulfurated plaster block
Block waterproofing agent, this method make it become hydrophobic by water-wetted surface by stearic acid, polyvinyl alcohol, cement, boric acid salt water-repellent
Surface, the features such as to prevent the invasion of moisture from reaching waterproof；Publication number：The Chinese invention patent application of CN102180647A
(publication date on 09 14th, 2011) discloses a kind of desulfurized building gypsum water-proof building block, and this method uses desulphurization building gypsum
30%-94%, calcium silicate slag 0%-50%, low-alkalinity sulphoaluminate cement 6%-20%.For changing for desulphurization building gypsum building block
Into greatly improving the water resistance of gypsum block, although such method has certain waterproof effect, but very limits change
The purity for having become desulfurated plaster is unfavorable for the plasticity of desulfurated plaster product；The Chinese invention of publication number CN106186801A is special
Profit application (publication date on December 07th, 2016) discloses a kind of preparation method of composite modified waterproofing gypsum agent, and this method is adopted
It is put into methane-siliconic acid sodium alkoxide, deionized water, polyoxylethylene abietate, glycerine, polyvinyl alcohol and potassium peroxydisulfate and is protected by nitrogen
It is stirred to react in the reaction kettle of shield, with gas in silicon fluoride replacement reaction kettle, to prepare waterproofing gypsum agent, such method pair is set
Standby condition requires height, takes longer.Currently, domestic emulsion type desulfurated plaster waterproofing agent be mainly paraffin wax emulsions, rosin milk and
Asphalt modification lotion, still, there are two disadvantages for such waterproofing agent：First, additive amount is more, additive amount is generally in gypsum dosage
10% or so；Second is that poor storage stability, the general Storage period no more than 3 moon.
Invention content
To solve above-mentioned technological deficiency existing in the prior art, the present invention provides a kind of high conversion rate, synthesis technologies
Convenient, organic-silicon-modified emulsion water-proof agent of economic and environment-friendly desulfurated plaster and preparation method thereof has performance stabilization, additive amount
The features such as less and preparation process is simple.
The present invention solves its technical problem and is achieved through the following technical solutions：
A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster, is made of following parts by weight of component：
The styrene is washed away to be pre-processed using 5% sodium hydroxide solution as a preferred technical solution,
The styrene of polymerization inhibitor.
The emulsifier is nonionic emulsifier nonylphenol polyoxyethylene ether and anion breast as a preferred technical solution,
Agent lauryl sodium sulfate compound emulsifying agent, the nonionic emulsifier nonylphenol polyoxyethylene ether, anion emulsifier ten
The ratio of sodium dialkyl sulfate compound emulsifying agent is 4:1-2:1.
The function monomer is methyl methacrylate, monobutyl itaconate, N- methylols as a preferred technical solution,
One or more of acrylamide, glycidyl methacrylate.
The organosilicon is one in KH-151, KH-550, MPTS, containing hydrogen silicone oil 203 as a preferred technical solution,
Kind is several.
As a preferred technical solution, the Ludox be the colloidal particle of nano level amorphous silica in water or
The pH value of dispersion in organic solvent, the Ludox is 2.0-7.0, average grain diameter 10-20nm.
The preparation method of the organic-silicon-modified emulsion water-proof agent of the desulfurated plaster, it is characterised in that：
Step 1：Ionized water is removed by weight, and is divided into deionized water one, deionized water two and deionized water three, institute
The weight ratio for stating deionized water one, deionized water two and deionized water three is 1:2:1, then by deionized water one and by weight
The compound emulsifying agent, styrene, isobutyl acrylate, the function monomer of amount part acquirement carry out high intensity and are stirred, and mix
Time is 20min, and it is for use that pre-emulsion a is prepared；
Step 2：The ammonium persulfate is taken to be dissolved in deionized water two by weight, allotment obtains initiator solution b and waits for
With；
Step 3：It takes sodium bicarbonate and deionized water three to be added in reaction kettle by weight, and stirring and dissolving, adjusts temperature
Degree is increased to 60-70 DEG C, and it is for use that solution c is prepared in reaction time 30min；
Step 4：It is pre-emulsion a1 and pre-emulsion a2 by a points of pre-emulsion in the step 1, by the step
B points of initiator solution in rapid two is initiator solution b1 and initiator solution b2, takes the pre-emulsion a1 and the initiation
Agent solution b1 is instilled in the solution c in the step 3, and is stirred, mixing speed 350-400r/min, adjusts temperature
It is increased to 80-85 DEG C, it is for use that seed emulsion d is prepared；
Step 5：Take by weight in the pre-emulsion a2 that organic silicon monomer is mixed into the step 4, then with the step
Initiator solution b2 in rapid four is added dropwise into the seed emulsion d in the step 4 simultaneously, and is stirred, mixing speed
For 280-340r/min, while insulation reaction 1-2h, the Ludox is added later and stirs 30min together, adjusting temperature reduces
To 40 DEG C hereinafter, obtained solution e is for use；
Step 6：The pH value of the solution e in the step 5 is reconciled with ammonium hydroxide to 7-8 and is filtered, and the desulfurization stone is made
The organic-silicon-modified emulsion water-proof agent of cream.
The present invention advantageous effects be：
(1) by the compound of nonionic emulsifier and anion emulsifier, the stability of modified emulsion is substantially increased,
1h is not demulsified under the speed of 400r/min；
(2) function monomer is added, makes to introduce functional form group in macromolecular chain, to make the weatherability of modified emulsion
It is greatly improved with freeze-thaw resistance；
(3) be added organic silicon monomer, improve the degree of cross linking of latex film, greatly improve modified emulsion water resistance,
Dispersibility and adhesive force；
(4) one layer of hydrophobic membrane is formed on desulfurated plaster crystal, will not destroy the crystalline structure of desulfurated plaster；
(5) under 0.1% volume, the coefficient of softing of desulfurated plaster is enabled to can reach 0.7 or more, very big limit
The application range for improving desulfurated plaster.
Specific implementation mode
Below by specific embodiment, the invention will be further described, and following embodiment is descriptive, is not limit
Qualitatively, protection scope of the present invention cannot be limited with this.
It should be noted that styrene in following embodiment be pre-processed using 5% sodium hydroxide solution and
Wash away the styrene of polymerization inhibitor；Emulsifier is nonionic emulsifier nonylphenol polyoxyethylene ether and anion emulsifier dodecane
Base sodium sulphate compound emulsifying agent, and nonionic emulsifier nonylphenol polyoxyethylene ether, anion emulsifier lauryl sodium sulfate
The ratio of compound emulsifying agent is 4:1-2:1；Function monomer is methyl methacrylate, monobutyl itaconate, N- methylol propylene
One or more of amide, glycidyl methacrylate；Organosilicon is KH-151, KH-550, MPTS, containing hydrogen silicone oil
One or more of 203；Ludox is the colloidal particle of nano level amorphous silica in water or organic solvent
The pH value of dispersion, the Ludox is 2.0-7.0, average grain diameter 10-20nm.
Embodiment 1
A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster, is made of following parts by weight of component：
Preparation method
Step 1：Ionized water is removed by weight, and is divided into deionized water one, deionized water two and deionized water three, institute
The weight ratio for stating deionized water one, deionized water two and deionized water three is 1:2:1, then by deionized water one and by weight
The compound emulsifying agent, styrene, isobutyl acrylate, the function monomer of amount part acquirement carry out high intensity and are stirred, and mix
Time is 20min, and it is for use that pre-emulsion a is prepared；
Step 2：The ammonium persulfate is taken to be dissolved in deionized water two by weight, allotment obtains initiator solution b and waits for
With；
Step 3：It takes sodium bicarbonate and deionized water three to be added in reaction kettle by weight, and stirring and dissolving, adjusts temperature
Degree is increased to 60 DEG C, and it is for use that solution c is prepared in reaction time 30min；
Step 4：It is pre-emulsion a1 and pre-emulsion a2 by a points of pre-emulsion in the step 1, by the step
B points of initiator solution in rapid two is initiator solution b1 and initiator solution b2, takes the pre-emulsion a1 and the initiation
Agent solution b1 is instilled in the solution c in the step 3, and is stirred, mixing speed 400r/min, is adjusted temperature and is increased
To 80 DEG C, it is for use that seed emulsion d is prepared；
Step 5：Take by weight in the pre-emulsion a2 that organic silicon monomer is mixed into the step 4, then with the step
Initiator solution b2 in rapid four is added dropwise into the seed emulsion d in the step 4 simultaneously, and is stirred, mixing speed
For 340r/min, while insulation reaction 1h, the Ludox is added later and stirs 30min together, adjusts temperature and is reduced to 40 DEG C
Hereinafter, obtained solution e is for use；
Step 6：The pH value of the solution e in the step 5 is reconciled with ammonium hydroxide to 8 and is filtered, and the desulfurated plaster is made
Organic-silicon-modified emulsion water-proof agent.
Embodiment 2
A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster and preparation method thereof, each component weight proportion is as follows：
Preparation method
Step 1：Ionized water is removed by weight, and is divided into deionized water one, deionized water two and deionized water three, institute
The weight ratio for stating deionized water one, deionized water two and deionized water three is 1:2:1, then by deionized water one and by weight
The compound emulsifying agent, styrene, isobutyl acrylate, the function monomer of amount part acquirement carry out high intensity and are stirred, and mix
Time is 20min, and it is for use that pre-emulsion a is prepared；
Step 2：The ammonium persulfate is taken to be dissolved in deionized water two by weight, allotment obtains initiator solution b and waits for
With；
Step 3：It takes sodium bicarbonate and deionized water three to be added in reaction kettle by weight, and stirring and dissolving, adjusts temperature
Degree is increased to 70 DEG C, and it is for use that solution c is prepared in reaction time 30min；
Step 4：It is pre-emulsion a1 and pre-emulsion a2 by a points of pre-emulsion in the step 1, by the step
B points of initiator solution in rapid two is initiator solution b1 and initiator solution b2, takes the pre-emulsion a1 and the initiation
Agent solution b1 is instilled in the solution c in the step 3, and is stirred, mixing speed 350r/min, is adjusted temperature and is increased
To 85 DEG C, it is for use that seed emulsion d is prepared；
Step 5：Take by weight in the pre-emulsion a2 that organic silicon monomer is mixed into the step 4, then with the step
Initiator solution b2 in rapid four is added dropwise into the seed emulsion d in the step 4 simultaneously, and is stirred, mixing speed
For 280r/min, while insulation reaction 2h, the Ludox is added later and stirs 30min together, adjusts temperature and is reduced to 40 DEG C
Hereinafter, obtained solution e is for use；
Step 6：The pH value of the solution e in the step 5 is reconciled with ammonium hydroxide to 7 and is filtered, and the desulfurated plaster is made
Organic-silicon-modified emulsion water-proof agent.
Embodiment 3
A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster and preparation method thereof, each component weight proportion is as follows：
Preparation method
Step 1：Ionized water is removed by weight, and is divided into deionized water one, deionized water two and deionized water three, institute
The weight ratio for stating deionized water one, deionized water two and deionized water three is 1:2:1, then by deionized water one and by weight
The compound emulsifying agent, styrene, isobutyl acrylate, the function monomer of amount part acquirement carry out high intensity and are stirred, and mix
Time is 20min, and it is for use that pre-emulsion a is prepared；
Step 2：The ammonium persulfate is taken to be dissolved in deionized water two by weight, allotment obtains initiator solution b and waits for
With；
Step 3：It takes sodium bicarbonate and deionized water three to be added in reaction kettle by weight, and stirring and dissolving, adjusts temperature
Degree is increased to 60 DEG C, and it is for use that solution c is prepared in reaction time 30min；
Step 4：It is pre-emulsion a1 and pre-emulsion a2 by a points of pre-emulsion in the step 1, by the step
B points of initiator solution in rapid two is initiator solution b1 and initiator solution b2, takes the pre-emulsion a1 and the initiation
Agent solution b1 is instilled in the solution c in the step 3, and is stirred, mixing speed 350r/min, is adjusted temperature and is increased
To 80 DEG C, it is for use that seed emulsion d is prepared；
Step 5：Take by weight in the pre-emulsion a2 that organic silicon monomer is mixed into the step 4, then with the step
Initiator solution b2 in rapid four is added dropwise into the seed emulsion d in the step 4 simultaneously, and is stirred, mixing speed
For 280r/min, while insulation reaction 1h, the Ludox is added later and stirs 30min together, adjusts temperature and is reduced to 40 DEG C
Hereinafter, obtained solution e is for use；
Step 6：The pH value of the solution e in the step 5 is reconciled with ammonium hydroxide to 7 and is filtered, and the desulfurated plaster is made
Organic-silicon-modified emulsion water-proof agent.
Embodiment 4
A kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster and preparation method thereof, each component weight proportion is as follows：
Preparation method
Step 1：Ionized water is removed by weight, and is divided into deionized water one, deionized water two and deionized water three, institute
The weight ratio for stating deionized water one, deionized water two and deionized water three is 1:2:1, then by deionized water one and by weight
The compound emulsifying agent, styrene, isobutyl acrylate, the function monomer of amount part acquirement carry out high intensity and are stirred, and mix
Time is 20min, and it is for use that pre-emulsion a is prepared；
Step 2：The ammonium persulfate is taken to be dissolved in deionized water two by weight, allotment obtains initiator solution b and waits for
With；
Step 3：It takes sodium bicarbonate and deionized water three to be added in reaction kettle by weight, and stirring and dissolving, adjusts temperature
Degree is increased to 70 DEG C, and it is for use that solution c is prepared in reaction time 30min；
Step 4：It is pre-emulsion a1 and pre-emulsion a2 by a points of pre-emulsion in the step 1, by the step
B points of initiator solution in rapid two is initiator solution b1 and initiator solution b2, takes the pre-emulsion a1 and the initiation
Agent solution b1 is instilled in the solution c in the step 3, and is stirred, mixing speed 400r/min, is adjusted temperature and is increased
To 85 DEG C, it is for use that seed emulsion d is prepared；
Step 5：Take by weight in the pre-emulsion a2 that organic silicon monomer is mixed into the step 4, then with the step
Initiator solution b2 in rapid four is added dropwise into the seed emulsion d in the step 4 simultaneously, and is stirred, mixing speed
For 340r/min, while insulation reaction 2h, the Ludox is added later and stirs 30min together, adjusts temperature and is reduced to 40 DEG C
Hereinafter, obtained solution e is for use；
Step 6：The pH value of the solution e in the step 5 is reconciled with ammonium hydroxide to 8 and is filtered, and the desulfurated plaster is made
Organic-silicon-modified emulsion water-proof agent.
According to the material mixture ratio in embodiment 1-4, each component, manufactured desulfurated plaster waterproofing agent, in NJ- are accurately measured
2min is stirred in 160A net slurry blenders, it is real according to GB/T 17669.4-1999 standards and GB/T 17669.3-1999 standards
Proved recipe method tests the physical property and mechanical property of desulfurated plaster, and test result is shown in Table one, table two.
The properties of the one organic-silicon-modified emulsion water-proof agent of embodiment 1-4 desulfurated plasters of table are tested
Test (the volume that the two organic-silicon-modified emulsion water-proof agent of embodiment 1-4 desulfurated plasters of table is applied in desulfurated plaster
For 0.1%)
Table two is being taken off the results show that compared with being not spiked with desulfurated plaster waterproofing agent using inventive desulfurization waterproofing gypsum agent
Sulphur gypsum aspect of performance has significant improvement effect.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of organic-silicon-modified emulsion water-proof agent of desulfurated plaster, it is characterised in that：It is made of following parts by weight of component：
。
2. the organic-silicon-modified emulsion water-proof agent of desulfurated plaster according to claim 1, it is characterised in that：The styrene is
The styrene of polymerization inhibitor is pre-processed and is washed away using 5% sodium hydroxide solution.
3. the organic-silicon-modified emulsion water-proof agent of desulfurated plaster according to claim 1 or 2, it is characterised in that：The emulsification
Agent be nonionic emulsifier nonylphenol polyoxyethylene ether and anion emulsifier lauryl sodium sulfate compound emulsifying agent, it is described non-
Ionic emulsifying agent nonylphenol polyoxyethylene ether, the ratio of anion emulsifier lauryl sodium sulfate compound emulsifying agent are 4:1-2:
1。
4. the organic-silicon-modified emulsion water-proof agent of desulfurated plaster according to claim 1 or 2, it is characterised in that：The function
Monomer is one in methyl methacrylate, monobutyl itaconate, N hydroxymethyl acrylamide, glycidyl methacrylate
Kind is several.
5. the organic-silicon-modified emulsion water-proof agent of desulfurated plaster according to claim 1 or 2, it is characterised in that：It is described organic
Silicon is one or more of KH-151, KH-550, MPTS, containing hydrogen silicone oil 203.
6. the organic-silicon-modified emulsion water-proof agent of desulfurated plaster according to claim 1 or 2, it is characterised in that：The silicon is molten
Glue is dispersion of the colloidal particle of nano level amorphous silica in water or organic solvent, the PH of the Ludox
Value is 2.0-7.0, average grain diameter 10-20nm.
7. the preparation method of the organic-silicon-modified emulsion water-proof agent of desulfurated plaster according to claim 1, it is characterised in that：
Step 1：Ionized water is removed by weight, and is divided into deionized water one, deionized water two and deionized water three, it is described to go
The weight ratio of ionized water one, deionized water two and deionized water three is 1:2:1, then take deionized water one and by weight
The compound emulsifying agent, styrene, isobutyl acrylate, the function monomer obtained carries out high intensity and is stirred, and incorporation time is
It is for use that pre-emulsion a is prepared in 20min；
Step 2：The ammonium persulfate is taken to be dissolved in deionized water two by weight, it is for use that allotment obtains initiator solution b；
Step 3：It takes sodium bicarbonate and deionized water three to be added in reaction kettle by weight, and stirring and dissolving, adjusts temperature liter
Up to 60-70 DEG C, it is for use that solution c is prepared in reaction time 30min；
Step 4：It is pre-emulsion a1 and pre-emulsion a2 by a points of pre-emulsion in the step 1, it will be in the step 2
Initiator solution b points be initiator solution b1 and initiator solution b2, take the pre-emulsion a1 and the initiator solution
B1 is instilled in the solution c in the step 3, and is stirred, mixing speed 350-400r/min, is adjusted temperature and is increased to
80-85 DEG C, it is for use that seed emulsion d is prepared；
Step 5：Take by weight in the pre-emulsion a2 that organic silicon monomer is mixed into the step 4, then with the step 4
In initiator solution b2 be added dropwise simultaneously into the seed emulsion d in the step 4, and be stirred, mixing speed 280-
340r/min, while insulation reaction 1-2h are added the Ludox and stir 30min together later, adjust temperature and are reduced to 40 DEG C
Hereinafter, obtained solution e is for use；
Step 6：The pH value of the solution e in the step 5 is reconciled with ammonium hydroxide to 7-8 and is filtered, and the desulfurated plaster, which is made, to be had
Machine Si modification emulsion water-proof agent.
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| CN110510914A (en) * | 2019-09-03 | 2019-11-29 | 安徽建筑大学 | Composite emulsion waterproof agent for improving water resistance of desulfurized gypsum and preparation method thereof |
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| CN111395640A (en) * | 2019-10-08 | 2020-07-10 | 绿城装饰工程集团有限公司 | Gypsum board cracking-prevention cutting and mounting method |
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| CN111087884A (en) * | 2019-12-21 | 2020-05-01 | 张得华 | Preparation method of organosilicon gypsum waterproof agent |
| CN112679649A (en) * | 2020-11-19 | 2021-04-20 | 江苏博拓新型建筑材料股份有限公司 | Modified styrene-acrylic emulsion waterproof agent, preparation method thereof and application thereof in phosphogypsum |
| CN115160801A (en) * | 2022-07-20 | 2022-10-11 | 江苏博拓新型建筑材料股份有限公司 | Enhanced organic silicon microcapsule gypsum waterproof emulsion and preparation method and application thereof |
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