CN110451843A - A kind of high efficiency water reducing agent and preparation method thereof - Google Patents
A kind of high efficiency water reducing agent and preparation method thereof Download PDFInfo
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- CN110451843A CN110451843A CN201910714206.3A CN201910714206A CN110451843A CN 110451843 A CN110451843 A CN 110451843A CN 201910714206 A CN201910714206 A CN 201910714206A CN 110451843 A CN110451843 A CN 110451843A
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- reducing agent
- high efficiency
- water reducing
- efficiency water
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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
- 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
-
- 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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- 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
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Ceramic Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to technical field of concrete additives, a kind of high efficiency water reducing agent and preparation method thereof is specifically referred to, formula includes the ingredient of following weight parts: 15~30 parts of poly glycol monomethyl ether, methacrylic acid 16~30, hydroquinone 15~25, maleic anhydride 15~20, carboxymethyl cellulose 8~10,1~2 part of the concentrated sulfuric acid, 1~3 part of basalt ash, 1~3 part of shale ashes, 2~6 parts of sodium hydroxide solution, 5~8 parts of ammonium persulfate, 0.5~2 part of foaming agent, 0.5~2 part of defoaming agent, 60~150 parts of deionized water；The invention also discloses a kind of preparation methods of high efficiency water reducing agent.Finished product water-reducing rate of the invention is high, good fluidity, can obviously improve concrete flowability and workability and increases substantially the intensity of concrete each age, is suitable for all kinds of concrete；Simple process is easy to control, no pollution to the environment.
Description
Technical field
The present invention relates to technical field of concrete additives, in particular to a kind of high efficiency water reducing agent and preparation method thereof.
Background technique
Water-reducing agent is a kind of under conditions of maintaining concrete slump to be basically unchanged, and can be reduced the coagulation of mixing water amount
Native additive.Belong to anionic surfactant mostly, there is lignosulfonates, naphthalene sulphonate formaldehyde polymer etc..It is added mixed
There is peptizaiton to cement granules after solidifying soil mixture, its workability can be improved, reduce unit consumption of water, improve concrete mixing
The mobility of object；Or unit cement consumption is reduced, save cement.
Summary of the invention
For above-mentioned deficiency in the prior art, the present invention provides a kind of high efficiency water reducing agent and preparation method thereof, at
Product water-reducing rate is high, stablizes.
In order to achieve the above object of the invention, the technical solution adopted by the present invention are as follows:
A kind of high efficiency water reducing agent, the ingredient including following weight parts: 15~30 parts of poly glycol monomethyl ether, methacrylic acid
16~30, hydroquinone 15~25, maleic anhydride 15~20, carboxymethyl cellulose 8~10,1~2 part of the concentrated sulfuric acid, basalt ash 1
~3 parts, 1~3 part of shale ashes, 2~6 parts of sodium hydroxide solution, 5~8 parts of ammonium persulfate, 0.5~2 part of foaming agent, defoaming agent 0.5
~2 parts, 60~150 parts of deionized water.
Preferably, the foaming agent is one of calcium carbonate, magnesium carbonate, sodium bicarbonate or a variety of.
Preferably, the defoaming agent is one of modified silicon polyethers, modified organic silicon defoaming agent.
Preferably, a kind of high efficiency water reducing agent, the ingredient including following weight parts: poly glycol monomethyl ether 20
Part, methacrylic acid 25, hydroquinone 16, maleic anhydride 16, carboxymethyl cellulose 8,1.5 parts of the concentrated sulfuric acid, basalt ash 1 part,
2 parts of shale ashes, 4 parts of sodium hydroxide solution, 6 parts of ammonium persulfate, 1 part of foaming agent, 1.5 parts of defoaming agent, 120 parts of deionized water.
A kind of preparation method of high efficiency water reducing agent, includes the following steps:
(1) poly glycol monomethyl ether, methacrylic acid, hydroquinone, maleic anhydride are poured into reaction kettle, and part is added
Deionized water, after mixing evenly 2~5h of insulation reaction；
(2) it keeps reactor temperature constant, the concentrated sulfuric acid and uniform stirring, insulation reaction 25 is slowly added into reaction kettle
~40min；
(3) carboxymethyl cellulose, ammonium persulfate and remaining deionized water are mixed and heated to 75~80 DEG C, mixing is made
Liquid；
(4) mixed liquor and basalt ash, shale ashes are added in reaction kettle and are stirred evenly, addition foaming agent reaction 0.2~
0.5h adds defoaming agent and reacts 2~5h, is cooled to room temperature；
(5) sodium hydroxide solution is added and adjusts pH to 6.8~7.0, obtain finished product water-reducing agent.
Preferably, in step 1, the temperature in reaction kettle is 75~85 DEG C.
The invention has the benefit that water-reducing rate is high, good fluidity, can obviously improve concrete flowability and workability and
The intensity of concrete each age is increased substantially, all kinds of concrete are suitable for；Simple process is easy to control, no pollution to the environment.
Specific embodiment
In order that the present invention can be more clearly and readily understood, below by technical solution in the embodiment of the present invention
It is clearly and completely described.
Poly glycol monomethyl ether: for making the raw material of cement highly efficient water-reducing agent, reinforcing agent in building materials industry, be prepare it is poly-
The main raw material(s) of carboxylate high range water reducing agent for cement uses the raw material；The efficient based water reducer of the polycarboxylic acids of synthesis has stronger water
Mud particle dispersion holding capacity, make product have volume is low, water-reducing rate is high, reinforcing effect is good, durability, not Corrosion Reinforcement and
The advantages that environmentally friendly.
Methacrylic acid: colourless crystallization or transparency liquid, irritant smell dissolve in hot water, dissolve in ethyl alcohol, ether
Deng most organic solvents, water-soluble polymer is easily aggregated into.It is flammable, meet high fever, open fire has danger of combustion, resolution generation of being heated
Toxic gas；It is prepared for organic synthesis and polymer, is the monomer for manufacturing acrylate solvent type and emulsion-type adhesive, uses
To improve the adhesive strength and stability of adhesive；As organic reagent, it is important in Organic Chemicals and polymer
Mesosome.
Hydroquinone: being that a kind of two contraposition hydrogen of benzene are optionally substituted by a hydroxyl group the organic compound to be formed.White crystals.It is called
Quinhydrones.Toxic, adult wrongly takes 1 gram, that is, may occur in which the symptoms such as headache, dizziness, tinnitus, pale complexion.Hydroquinone meets open fire, height
Heat is flammable, reacts with strong oxidizer, is decomposed to give off carbon monoxide by high fever.Hydroquinone be mainly used for producing black-and-white development agent,
Anthraquinone dye, azo dyes, rubber antioxidant, stabilizer and antioxidant.
Maleic anhydride: being at room temperature sour colourless or white solid, is a kind of important unsaturated organic acid anhydride group
This raw material, for synthesizing intermediate diethyl maleate, the pyridazine of organophosphorus insecticide malathion in pesticide producing
Intermediate 1- phenyl -3, the 6- dihydroxy pyridazine and pyrethroid insectide tetramethrin of sulphur phosphorus, fungicide, captan
Intermediate, in addition, being also used to produce unsaturated polyester resin, ink addition agent, paper making additive, coating and medical industry, food
Industry etc..
Carboxymethyl cellulose: native cellulose is that the polysaccharide most wide, content is most is distributed in nature, and source is very rich
It is rich.The modification technology of current fibre element is concentrated mainly on two aspect of etherificate and esterification.Carboxymethylation reaction is the one of etherification technology
Kind.Cellulose obtains carboxymethyl cellulose after carboxy methylation, and aqueous solution has thickening, film forming, gluing, water tariff collection, glue
The effects of body protection, emulsification and suspension, it is widely used in the industries such as petroleum, food, medicine, textile and paper, is most important
One of cellulose ethers.
Basalt: basaltic main ingredient is silica, aluminum oxide, iron oxide, calcium oxide, magnesia,
Middle dioxide-containing silica is most, accounts for about 45 to 50 or so percent.Basalt is with wear-resisting, draft amount is few, electric conductivity
Can be poor, crushing resistance is strong, crush values are low, corrosion resistance is strong, asphalt adhesion the advantages that, stronger pressure-proof and snap-resistent condition performance, extensively
Applied to building, transport etc..
Shale: as clay be dehydrated it is cementing made of rock, according to formed rock when deposition difference, the plasticity of shale
Index range 5~23, the height of the drying sensitivity of shale raw material shows as diversified form.It is usually quick with drying
Perceptual coefficient is measured, its range is generally between 0.4-1.6, for shale very high for some plasticity, it dry
Dry sensitivity coefficient may be higher.The drying linear shrinkage ratio of shale is also varied widely according to its type difference, changes model
It is trapped among 2.5%-10%.
The concentrated sulfuric acid: being a kind of highly corrosive strong mineral acid.The concentrated sulfuric acid refers to that mass fraction is greater than or equal to 70%
Sulfuric acid solution has strong corrosive；It also has strong oxidizing property, dehydration property, difficult volatility, acidity, water imbibition etc. simultaneously.
Sodium bicarbonate: white fine crystals, solubility in water are less than sodium carbonate, alkalescent are presented when being dissolved in water.This
Characteristic can make it as the leavening agent in food product making process.Sodium bicarbonate can remain sodium carbonate after effect, use excessive meeting
Finished product is set to have alkali taste.
Sodium hydroxide: the highly basic with strong corrosive, generally sheet or block-shape morphology are soluble easily in water and to form alkalinity molten
Liquid has hygroscopy, vapor and carbon dioxide in easy draw air；For common one of chemicals, can make in water process
For alkaline cleaner, it is dissolved in ethyl alcohol and glycerol；Insoluble in propyl alcohol, ether.Disproportionated reaction occurs with halogens such as chlorine, bromine, iodine, with acid
Class plays neutralization and generates salt and water.
Ammonium persulfate: for oxidant and bleaching agent, it is widely used in the Storage Battery Industry in China；Also serve as polymerization initiator,
The desizing agent of fiber industry；And it can be used as the etching agent of metal and semiconductor material surface inorganic agent, printed wire；Also use extensively
In the formation fracturing of oil exploitation, flour and starch processing industry, oil prodution industry are used to remove hypo on photographic industry.
Deionized water: it eliminates in the pure water after ionic species impurity, colourless clear liquid, odorless, tasteless, resistivity
Greater than 0.5M Ω cm, maximum resistance rate can reach 18,000,000, and purity is higher than distilled water.
A kind of high efficiency water reducing agent, the ingredient including following weight parts: 15~30 parts of poly glycol monomethyl ether, methacrylic acid
16~30, hydroquinone 15~25, maleic anhydride 15~20, carboxymethyl cellulose 8~10,1~2 part of the concentrated sulfuric acid, basalt ash 1
~3 parts, 1~3 part of shale ashes, 2~6 parts of sodium hydroxide solution, 5~8 parts of ammonium persulfate, 0.5~2 part of foaming agent, defoaming agent 0.5
~2 parts, 60~150 parts of deionized water.
Preferably, the foaming agent is one of calcium carbonate, magnesium carbonate, sodium bicarbonate or a variety of.
Preferably, the defoaming agent is one of modified silicon polyethers, modified organic silicon defoaming agent.
A kind of preparation method of high efficiency water reducing agent, includes the following steps:
(1) poly glycol monomethyl ether, methacrylic acid, hydroquinone, maleic anhydride are poured into reaction kettle, and part is added
Deionized water, after mixing evenly 2~5h of insulation reaction；
(2) it keeps reactor temperature constant, the concentrated sulfuric acid and uniform stirring, insulation reaction 25 is slowly added into reaction kettle
~40min；
(3) carboxymethyl cellulose, ammonium persulfate and remaining deionized water are mixed and heated to 75~80 DEG C, mixing is made
Liquid；
(4) mixed liquor and basalt ash, shale ashes are added in reaction kettle and are stirred evenly, addition foaming agent reaction 0.2~
0.5h adds defoaming agent and reacts 2~5h, is cooled to room temperature；
(5) sodium hydroxide solution is added and adjusts pH to 6.8~7.0, obtain finished product water-reducing agent.
Preferably, in step 1, the temperature in reaction kettle is 75~85 DEG C.
Embodiment one:
A kind of high efficiency water reducing agent, the ingredient including following weight parts: 20 parts of poly glycol monomethyl ether, methacrylic acid 25,
Hydroquinone 16, maleic anhydride 16, carboxymethyl cellulose 8,1.5 parts of the concentrated sulfuric acid, basalt grey 1 part, 2 parts of shale ashes, hydroxide
4 parts of sodium solution, 6 parts of ammonium persulfate, 1 part of foaming agent, 1.5 parts of defoaming agent, 120 parts of deionized water.
Embodiment two:
A kind of high efficiency water reducing agent, the ingredient including following weight parts: 25 parts of poly glycol monomethyl ether, methacrylic acid 25,
Hydroquinone 20, maleic anhydride 16, carboxymethyl cellulose 8,2 parts of the concentrated sulfuric acid, basalt grey 2 parts, 2 parts of shale ashes, sodium hydroxide
4.5 parts of solution, 6 parts of ammonium persulfate, 1.5 parts of foaming agent, 2 parts of defoaming agent, 150 parts of deionized water.
The invention has the benefit that water-reducing rate is high, good fluidity, can obviously improve concrete flowability and workability and
The intensity of concrete each age is increased substantially, all kinds of concrete are suitable for；Simple process is easy to control, no pollution to the environment.
The above description is only a preferred embodiment of the patent of the present invention, is not intended to limit the invention patent, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the invention patent within the spirit and principle of patent of invention
Protection scope within.
Claims (6)
1. a kind of high efficiency water reducing agent, which is characterized in that the ingredient including following weight parts: 15~30 parts of poly glycol monomethyl ether,
Methacrylic acid 16~30, hydroquinone 15~25, maleic anhydride 15~20, carboxymethyl cellulose 8~10, the concentrated sulfuric acid 1~2
Part, 1~3 part of basalt ash, 1~3 part of shale ashes, 2~6 parts of sodium hydroxide solution, 5~8 parts of ammonium persulfate, foaming agent 0.5~2
Part, 0.5~2 part of defoaming agent, 60~150 parts of deionized water.
2. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that: the foaming agent be calcium carbonate, magnesium carbonate,
One of sodium bicarbonate is a variety of.
3. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that: the defoaming agent is modified silicon polyethers, changes
One of property organic silicon defoamer.
4. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that: a kind of high efficiency water reducing agent, including
The ingredient of following weight parts: 20 parts of poly glycol monomethyl ether, methacrylic acid 25, hydroquinone 16, maleic anhydride 16, carboxymethyl
Cellulose 8,1.5 parts of the concentrated sulfuric acid, basalt grey 1 part, 2 parts of shale ashes, 4 parts of sodium hydroxide solution, 6 parts of ammonium persulfate, foaming agent 1
Part, 1.5 parts of defoaming agent, 120 parts of deionized water.
5. a kind of preparation method of high efficiency water reducing agent, which comprises the steps of:
(1) poly glycol monomethyl ether, methacrylic acid, hydroquinone, maleic anhydride are poured into reaction kettle, and be added part go from
Sub- water, after mixing evenly 2~5h of insulation reaction；
(2) it keeps reactor temperature constant, is slowly added to the concentrated sulfuric acid and uniform stirring into reaction kettle, insulation reaction 25~
40min；
(3) carboxymethyl cellulose, ammonium persulfate and remaining deionized water are mixed and heated to 75~80 DEG C, mixed liquor is made；
(4) mixed liquor and basalt ash, shale ashes are added in reaction kettle and are stirred evenly, foaming agent is added and reacts 0.2~0.5h,
It adds defoaming agent and reacts 2~5h, be cooled to room temperature；
(5) sodium hydroxide solution is added and adjusts pH to 6.8~7.0, obtain finished product water-reducing agent.
6. a kind of preparation method of high efficiency water reducing agent according to claim 5, it is characterised in that: in step 1, reaction kettle
Interior temperature is 75~85 DEG C.
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Application publication date: 20191115 |