CN105037670B - High-effective water reducing agent and preparation method thereof - Google Patents
High-effective water reducing agent and preparation method thereof Download PDFInfo
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Abstract
The invention provides a high-effective water reducing agent which is prepared from a ketone compound, an aldehyde compound, a monoaromatic hydrocarbon salt compound, and a polycyclic aromatic hydrocarbon salt compound, wherein the molar ratio of the ketone compound, the aldehyde compound, the monoaromatic hydrocarbon salt compound to the polycyclic aromatic hydrocarbon salt compound is 1.0:(2.0-3.5):(0.25-0.45):(0.15-0.35). The invention also provides a preparation method of the high-effective water reducing agent. The high-effective water reducing agent is simple in preparation method, is short in production period, is low in energy consumption, is high in water reducing rate and is significant in slump loss resistance. Meanwhile, the raw materials, such as the aromatic hydrocarbon salt compounds, are all toxic-free or low-toxic substances, so that the water reducing agent is good in safety, is free of emission of waste water, waste gas and soil wastes, is environment-friendly and is green and environment-protective.
Description
Technical field
The invention belongs to building material field, more particularly to a kind of concrete high efficiency water reducing agent and preparation method thereof.
Background technology
High efficiency water reducing agent is a kind of under conditions of maintaining concrete slump constant, reduces the concrete of mixing water amount
Additive.High efficiency water reducing agent is added in concrete, its workability can be improved, reduced unit consumption of water, increase concrete strength
Adduction improves durability.
Early 1930s, colonial improve the workability of concrete as water reducer using lignosulfonates,
Concrete is made to be changed from dry concrete to liquid concrete.The sixties in 20th century, Japan and Germany succeed in developing in succession
Naphthalene sulfonic acid-formaldehyde condensation product and sulfonated melamine compound condensation substance high efficiency water reducing agent, further improve the performance of concrete.
Mainly there is naphthalene sulfonate high efficiency water reducing agent using more high efficiency water reducing agent in the market, aliphatic hydroxyl sulphonate efficiently subtracts
Water preparation and sulfamate high-effective water-reducing agent.With science and technology and the development of production, various large volumes, strong concrete knot
The appearance of structure proposes higher requirement to concrete quality, thus also requires that concrete high efficiency water reducing agent has higher water-reducing rate
With low slump-loss.In this context, traditional high efficiency water reducing agent just exposes diminishing deficiency and slump-loss
Too fast shortcoming.
In order to overcome the shortcomings of above-mentioned high efficiency water reducing agent in terms of diminishing and function of slump protection, document report is to tradition efficient
The research that water reducer is modified.
Chinese patent CN 100340518C disclose a kind of preparation method of poly carboxylic acid modified fatty water-reducing agent, including
Prepare poly carboxylic acid modified dose and modifying agent participates in acetone-formaldehyde two steps of polycondensation reaction.Obtained water reducer has high
Water-reducing rate, can reach 21% water-reducing rate when volume is 0.6%, and 90 days comprcssive strength of concrete improves more than 30%.Produce
Product stable performance, long term storage is without layering, without precipitation, winter nodeless mesh.However, the production technology of the product adopts two-step method system
Standby, production efficiency is low；Meanwhile, poly carboxylic acid modified dose of price is higher so that the modified product can not be produced in popularization substantially
Economic benefit.
Chinese patent CN 101824128B provide a kind of beta-naphthol produced waste liquid modified amido sulfoacid salt high efficiency water reducing agent
And preparation method.The preparation of the water reducer includes two steps of sulfonating reaction and polycondensation reaction：Sulfonating reaction is 105～110
Under degree, naphthol sulfonate is obtained with naphthol reaction by sulfonating agent of concentrated sulphuric acid；Polycondensation reaction is to adjust body using pH value regulator
It is that in the basic conditions, phenol, formaldehyde, sodium sulfanilate and naphthol sulfonate occur polymerization to alkalescence, obtains liquid product
Product.The invention product significantly reduces the cost of modified sulfamate high-effective water-reducing agent, when volume is 0.3～0.8%, phase
Water-reducing rate is answered to be 16～24%.However, two steps of the process of producing product are carried out under strong acid and strong alkaline condition respectively,
Higher to producing equipment requirements, the phenol and naphthols toxicity in raw material is big, is unfavorable for safety and environmental protection.
It would therefore be highly desirable to research and develop a kind of have excellent diminishing and function of slump protection, and the high-performance diminishing of simple production process concurrently
Agent product.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of flowing that can improve cement slurry
The high efficiency water reducing agent of property and stability, its preparation process is simple, safety and environmental protection.
Technical scheme：
Applicant is had found by substantial amounts of experiment：In the building-up process of aldehyde ketone resin, add water miscible with various
The mononuclear aromatics salt compounds and condensed-nuclei aromatics salt compounds of functional group, can obtain water solublity aldehyde ketone condensation polymer；The contracting
Backbone structure and monocyclic/condensed-nuclei aromatics salt branched structure that polymers has aliphatic hydrocarbon-aromatic hydrocarbons compound.
Meanwhile, applicant is had found by substantial amounts of experiment：Carboxyl, sulfonic group official in mononuclear aromatics salt compounds structure
Can roll into a ball and there is very strong absorbability in cement particle surface, condensation polymer can be made to be arranged in cement particle surface, and make table
Face carries like charges, and in the presence of electrostatic repulsion, cement slurry stable suspersion is in water.Additionally, aliphatic hydrocarbon-aromatic hydrocarbons is compound
Backbone structure in, aliphatic hydrocarbon moiety is soft segment and aromatic moiety is rigid, and both are combined under certain proportion so that
Main chain has appropriate pliability on the whole, can adjust molecular conformation under the influence of environmental factorss around, with most stable of
Three-dimensional conformation adsorbs in cement particle surface.Except ingredient main chain, monocyclic/condensed-nuclei aromatics salt compounds also constitute contracting
The side chain of polymers, under the induction that aromatic hydrocarbons interannular Π-Π stack active force, the side chain of condensation polymer cement particle surface closely and
It is regular it is orderly must arrange, increase cement granules between it is sterically hindered so as to be difficult aggregation sedimentation.
Applicant devises ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and thick based on principles above
PAH salt compounds quaternary copolycondensation reaction system, is prepared for water solublity height by polycondensation reaction of four components in water phase
Effect water reducer product.The high efficiency water reducing agent product fine can must protect cement granules, there is provided good dispersion and stable effect.
A kind of high efficiency water reducing agent that the present invention is provided, by ketone compounds, aldehyde compound, mononuclear aromatics salt compounds
Make with condensed-nuclei aromatics salt compounds；Wherein, ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed ring
The mol ratio of aromatic hydrocarbons salt compounds is 1.0：(2.0～3.5)：(0.25～0.45)：(0.15～0.35).
Preferably, the ketone compounds are selected from the mixed of one or more in acetone, butanone, Ketohexamethylene, 1-Phenylethanone.
Close.
As another kind preferably, the aldehyde compound is selected from one or more in formaldehyde, acetaldehyde, furfural, benzaldehyde
Mixing.
As another kind preferably, the mononuclear aromatics salt compounds are shown in formula I：
Wherein, R1For H, CH3、OH、NH2Or NO2；Y1For COOM1Or SO3M1, M1For Na+、K+、Ca2+Or NH4 +；R1Group exists
Position on phenyl ring is in Y1Ortho position, meta or para position.
Used as further preferred, the mononuclear aromatics salt compounds are selected from P-hydroxybenzoic acid sodium, sodium benzoate, to hydroxyl
In base benzene sulfonic acid sodium salt, o-methyl-benzene ichthyodin, o-Carboxynitrobenzene calcium, m-hydroxybenzenesulfonic acid sodium, KPAB one
Plant or several mixing.
As another kind preferably, the condensed-nuclei aromatics salt compounds are as shown in Formula II：
Wherein, R2For CH3、OH、NH2Or NO2, Y2For COOM2Or SO3M2, M2For Na+、K+、Ca2+Or NH4 +, R2Group is in benzene
Position on ring is in Y2Ortho position, meta or para position.
Used as further preferred, the condensed-nuclei aromatics salt compounds are selected from 4- methyl naphthalene potassium formates, 2- methyl naphthoic acids
Sodium, 2- methyl naphthalene sodium formates, 3- naphthylamine sulfonic acid sodium, 4- amino naphthalenes ammonium formates, 4- croceine acid potassium, 3- amino naphthoic acids
The mixing of one or more in sodium, 3- nitros-naphthoic acid calcium.
As it is another kind of preferably, between 2000～20000, solid content exists for weight average molecular weight Mw of the high efficiency water reducing agent
Between 23～55%.The molecular weight of high efficiency water reducing agent product prepared by the present invention is not particularly limited, preferable weight-average molecular weight Mw
Between 2000～20000, this is because：It is insufficient that the too low situation of molecular weight is typically due to polycondensation reaction, extent of polymerization
Not high to cause, such product solid content is less than normal product, causes the waste of raw material, and its water-reducing property is also not
Alright；Molecular weight is too high, proves that polymerization process there occurs three-dimensional polycondensation, and net, sub-chain motion energy are cross-linked between polymer segment
Power declines, and properties of product are also decreased；Additionally, the product of high molecular often viscosity is very big, extreme situation even can shape
Into water-fast gel, risk is brought to production.
Present invention also offers the preparation method of above-mentioned high efficiency water reducing agent, comprises the following steps：
(1) mononuclear aromatics salt compounds, condensed-nuclei aromatics salt compounds, catalyst and water are mixed；
(2) ketone compounds are added, heats to 50～55 DEG C of reactions；
(3) Deca aldehyde compound, drips off in 60～90min；
(4) 90～95 DEG C are warming up to, 2～5min of insulation reaction；Cooling discharge, obtains final product.
Wherein, the catalyst is selected from sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, ammonia, phosphoric acid
The mixture of one or more in sodium, sodium tetraborate；Catalyst amount for reaction raw materials gross weight 0.5%～5.0%.
Wherein, amount of water is to make polymerization concentration be 25～60%；Wherein polymerization concentration for after adding aldehyde compound, insulation
The concentration of the stage of reaction.
Beneficial effect：The high efficiency water reducing agent production technology for providing of the invention is easy, with short production cycle, energy consumption is low, low cost
Honest and clean, water-reducing rate is high, and guarantor is collapsed effect is significant, meanwhile, raw materials used if aromatised salt compound is nontoxic or low toxicity material, product
Safety is good, production process three-waste free discharge, environmental sound, environmental protection.
Specific embodiment
Following examples describe in detail the concrete preparation process of product of the present invention, and these embodiments are by way of illustration
Be given, its object is to allow person skilled in the art will appreciate that present disclosure and implement according to this, but these enforcements
Example is in no way intended to limit the scope of the present invention.All equivalence changes done according to spirit of the invention or modification, should all cover at this
Within the protection domain of invention.
Raw material used in the embodiment of the present invention is can be from the commercialization chemical products of market purchase.The present invention is implemented
Reaction in example is entered in being furnished with the reaction vessel of motor stirrer, thermometer, condensing tube and Dropping funnel and heater
Capable.
In the embodiment of the present invention, formaldehyde used is the aqueous solution that mass concentration is 37.0%.
Polymer molecular weight in the embodiment of the present invention is determined using gel aqueous phase permeation chromatograph (GPC), instrument parameter
For：Shodex SB806+803 chromatographic columns, the NaNO of 0.1M3Aqueous solution is used as mobile phase, flow velocity 1.0mL/min, Shodex
RI-71 type differential refraction detectors, Polyethylene Glycol standard specimen.
Embodiment 1
First by the P-hydroxybenzoic acid sodium that weight is 56 grams (0.35mol), the 3- amino naphthoic acids of 52 grams (0.25mol)
Sodium, the sodium hydroxide of 7.5 grams (3.0wt%) and 172 grams of water are added in reactor, are stirred, and add 58 grams (1.0mol)
Acetone, be warmed up to 50 DEG C, then in 90 minutes Deca 227 grams (2.8mol) formalin, system after completion of dropwise addition
Temperature is 75 DEG C, is then heated to 90 DEG C, and insulation reaction 4 hours obtains fluid product, and solid content is 41%, molecular weight
For 5300.
Embodiment 2
First by (0.25mol) sodium benzoate that weight is 36 grams, the 3- amino naphthalenes sodium formates of 73 grams (0.35mol), 8.2
The sodium hydroxide and 164 grams of water of gram (3.0wt%) is added in reactor, is stirred, and adds the acetone of 58 grams (1.0mol),
Be warmed up to 50 DEG C, then in 90 minutes Deca 284 grams (3.5mol) formalin, after completion of dropwise addition, system temperature is 85
DEG C, 95 DEG C are then heated to, insulation reaction 5 hours obtains fluid product, and solid content is 41%, and molecular weight is 6700.
Embodiment 3
First by the o-methyl-benzene ichthyodin that weight is 85 grams (0.45mol), the 4- croceine acids of 92 grams (0.35mol)
Potassium, the sodium carbonate of 22.4 grams (5.0wt%) and 313 grams of water are added in reactor, are stirred, and add 58 grams (1.0mol)
Acetone, is warmed up to 52 DEG C, then in 60 minutes Deca 212 grams (2.0mol) benzaldehyde, after completion of dropwise addition, system temperature is
65 DEG C, 95 DEG C are then heated to, insulation reaction 3 hours obtains fluid product, and solid content is 55%, and molecular weight is
10500。
Embodiment 4
First by the p-hydroxy benzenyl sulfonate sodium that weight is 69 grams (0.35mol), the 2- methyl naphthoic acids of 31 grams (0.15mol)
Sodium, the sodium hydroxide of 8.5 grams (0.5wt%) and 577 grams of water are added in reactor, are stirred, and add 58 grams (1.0mol)
Gram acetone, be warmed up to 55 DEG C, then in 60 minutes Deca 162 grams (2.0mol) formalin, body after completion of dropwise addition
It is temperature for 65 DEG C, is then heated to 93 DEG C, insulation reaction 2 hours obtains fluid product, and solid content is 23%, molecule
Measure as 2000.
Embodiment 5
First by weight for 49 grams (0.25mol) m-hydroxybenzenesulfonic acid sodium, the 4- methyl naphthalene first of 56 grams (0.25mol) gram
Sour potassium, 6.2 grams of (2.0wt%) sodium hydroxide, the sodium phosphate of 3.1 grams (1.0wt%) and 519 grams of water are added in reactor, are stirred
Mix uniform, add the acetone of the Ketohexamethylene and 41 grams (0.70mol) of 30 grams (0.30mol), be warmed up to 55 DEG C, by 71 grams
(0.74mol) furfural and the formalin mix homogeneously of 167 grams (2.06mol) loads in Dropping funnel, then at 90 points
In clock, Deca enters reactor, and after completion of dropwise addition, system temperature is 85 DEG C, is then heated to 90 DEG C, and insulation reaction 3 hours is obtained
To fluid product, solid content is 31%, and molecular weight is 15000.
Embodiment 6
First by the o-Carboxynitrobenzene calcium of 0.30mol, the 2- methyl naphthalene sodium formates of 0.25mol, reaction raw materials gross weight
0.5% potassium hydroxide and 500 grams of water be added in reactor, stir, add 1mol butanone, be warmed up to 55 DEG C, so
Afterwards in 60 minutes Deca 3.0mol acetaldehyde solution, after completion of dropwise addition, system temperature is 85 DEG C, is then heated to 90
DEG C, insulation reaction 3 hours obtains fluid product, and solid content is 25%, and molecular weight is 6000.
Embodiment 7
First by the KPAB of 0.30mol, the 3- naphthylamine sulfonic acid sodium of 0.25mol, reaction raw materials gross weight
5.0% calcium hydroxide and 500 grams of water be added in reactor, stir, add 1mol butanone, be warmed up to 55 DEG C, so
Afterwards in 60 minutes Deca 3.0mol benzaldehyde aqueous solution, after completion of dropwise addition, system temperature is 85 DEG C, is then heated to
90 DEG C, insulation reaction 3 hours obtains fluid product, and solid content is 31%, and molecular weight is 5500.
Embodiment 8
First by the KPAB of 0.30mol, the 4- amino naphthalenes ammonium formates of 0.25mol, reaction raw materials gross weight
2% potassium carbonate and 500 grams of water be added in reactor, stir, add 1mol 1-Phenylethanone .s, be warmed up to 55 DEG C, then
The formalin of Deca 3.0mol in 60 minutes, after completion of dropwise addition, system temperature is 85 DEG C, is then heated to 90 DEG C,
Insulation reaction 3 hours, obtains fluid product, and solid content is 32%, and molecular weight is 19000.
Embodiment 9
First by the KPAB of 0.30mol, the 3- nitros-naphthoic acid calcium of 0.25mol, reaction raw materials gross weight
1% ammonia, reaction raw materials gross weight 2% sodium tetraborate and 500 grams of water be added in reactor, stir, plus
Enter 1mol 1-Phenylethanone .s, be warmed up to 55 DEG C, then in 60 minutes Deca 3.0mol formalin, system temperature after completion of dropwise addition
Spend for 85 DEG C, be then heated to 90 DEG C, insulation reaction 3 hours obtains fluid product, and solid content is 28%, and molecular weight is
16000。
Comparative example 1
First by weight for 56 grams (0.35mol) P-hydroxybenzoic acid sodium, the sodium hydroxide of 7.5 grams (3.0wt%) and
172 grams of water are added in reactor, are stirred, and are added the acetone of 58 grams (1.0mol), are warmed up to 50 DEG C, then 60～90
The formalin of Deca 227 grams (2.8mol) in minute, after completion of dropwise addition, system temperature is 75 DEG C, is then heated to 90
DEG C, insulation reaction 4 hours obtains fluid product, and solid content is 36%, and molecular weight is 5100.
Comparative example 2
First by (0.25mol) sodium benzoate that weight is 36 grams, the 3- amino naphthalenes sodium formates of 73 grams (0.35mol), 8.2
The sodium hydroxide and 164 grams of water of gram (3.0wt%) is added in reactor, is stirred, and adds the acetone of 58 grams (1.0mol),
Be warmed up to 50 DEG C, then in 60～90 minutes Deca 284 grams (3.5mol) formalin, system temperature after completion of dropwise addition
For 85 DEG C, 95 DEG C are then heated to, insulation reaction 5 hours obtains fluid product, and solid content is 38%, and molecular weight is
7000。
Comparative example 3
First by the o-methyl-benzene ichthyodin that weight is 85 grams (0.45mol), the 4- croceine acids of 92 grams (0.35mol)
Potassium, the sodium carbonate of 22.4 grams (5.0wt%) and 313 grams of water are added in reactor, are stirred, and add 58 grams (1.0mol)
Acetone, is warmed up to 52 DEG C, then in 60 minutes Deca 212 grams (2.0mol) benzaldehyde, after completion of dropwise addition, system temperature is
65 DEG C, 95 DEG C are then heated to, insulation reaction 8 hours obtains fluid product, and solid content is 55%, and molecular weight is
51000。
Application Example
In order to evaluate dispersive property and dispersion holding capacity of the high efficiency water reducing agent prepared by the present invention to cement slurry, reference
Standard GB/T 8077-2000 has carried out flowing degree of net paste of cement test.In Application Example of the present invention, institute the cement that adopts for
300g reference cements, amount of water are 87g, by adjusting admixture dosage (folding is solid to be calculated), make initial paste flowing degree basic
Cause, after 1 hour, determine its paste flowing degree situation of change again.
Comparative example in Application Example of the present invention is respectively commercially available naphthalene series high-efficiency water-reducing agent, commercially available aliphatic high-efficiency diminishing
Agent, commercially available aminosulfonate-based superplasticizer and two self-control comparative examples.Wherein, three kinds of commercially available high efficiency water reducing agent samples are by Su Bote green woods
Material limited company provides.
Embodiment is listed in table 1 with the paste flowing degree test result of commercially available high efficiency water reducing agent.Result from table 1 can
Go out, when the initial paste flowing degree of cement is identical, commercially available naphthalene system is significantly lower than using water reducer volume needed for product of the present invention
Both and aliphatic high-efficiency water reducing agent, and after keeping being also significantly better than using the fluidity after 1 hour of product of the present invention.With
Commercially available aminosulfonate-based superplasticizer is compared, and the initial water-reducing property of product of the present invention is suitable with which, but is protected effect of collapsing and be substantially better than
Aminosulfonate-based superplasticizer.
The paste flowing degree result of the test of 1 embodiment of table and commercially available high efficiency water reducing agent
Table 2 is the flowing degree of net paste of cement result of the test of embodiment and self-control comparative example.Wherein, comparative example 1 is without addition
Condensed-nuclei aromatics salt compounds, remaining preparation condition are same as Example 1；Comparative example 2 does not add mononuclear aromatics salt chemical combination
Thing, remaining condition are same as Example 2；Comparative example 3 is corresponding with embodiment 3, except for the difference that the response time extend compared with embodiment 3
6 hours.
Data explanation in table 2, when lacking condensed-nuclei aromatics salt compound (comparative example 1), the Mw changes of product are little, initially
Dispersive property is constant, but dispersion holding performance is deteriorated.This is because when lacking condensed-nuclei aromatics compound, sterically hindered deficiency is produced
Product are not strong to the protective capability of cement granules.Although under initial condition, cement can be with fully dispersed, prolongation over time,
Cement granules flock together because of collision, settle then, make fluidity diminish.
If lacking mononuclear aromatics salt compounds (comparative example 2), initial dispersion hydraulic performance decline and fluidity holding capacity
It is constant.When lacking mononuclear aromatics salt compounds, the adsorption group number of condensation polymer tails off, and adsorption efficiency is not high, to reach phase
Same adsorbance needs more condensation polymers.
Because the response time extends, 3 products obtained therefrom molecular weight of comparative example is very big (Mw=51000), much larger than embodiment 3
Mw=10500, and product viscosity is very big, dissolves slower in water.From GPC as can be seen that the increase of its molecular weight it is main
Reason is to generate substantial amounts of high molecular weight crosslinked product.Paste flowing degree result of the test shows, under the performance of comparative example 3 is serious
Drop, compares embodiment 3, reaches the required volume increase by 36% when keeping of identical fluidity and fluidity.
2 embodiment of table and the flowing degree of net paste of cement result of the test for making comparative example by oneself
Claims (9)
1. a kind of high efficiency water reducing agent, it is characterised in that：By ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and
Condensed-nuclei aromatics salt compounds are made；Wherein, ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed ring virtue
The mol ratio of hydrocarbon salt compounds is 1.0：(2.0～3.5)：(0.25～0.45)：(0.15～0.35)；The high efficiency water reducing agent
Weight average molecular weight Mw between 2000～20000, solid content is between 23～55%.
2. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that：The ketone compounds are selected from acetone, fourth
The mixing of one or more in ketone, Ketohexamethylene, 1-Phenylethanone..
3. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that：The aldehyde compound is selected from formaldehyde, second
The mixing of one or more in aldehyde, furfural, benzaldehyde.
4. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that：The mononuclear aromatics salt compounds such as formula
Shown in I：
Wherein, R1For H, CH3、OH、NH2Or NO2；Y1For COOM1Or SO3M1, M1For Na+、K+、Ca2+Or NH4 +；
R1Position of the group on phenyl ring is in Y1Ortho position, meta or para position.
5. a kind of high efficiency water reducing agent according to claim 4, it is characterised in that：The mononuclear aromatics salt compounds are selected from
P-hydroxybenzoic acid sodium, sodium benzoate, p-hydroxy benzenyl sulfonate sodium, o-methyl-benzene ichthyodin, o-Carboxynitrobenzene calcium, a hydroxy benzenes
The mixing of one or more in sodium sulfonate, KPAB.
6. a kind of high efficiency water reducing agent according to claim 1, it is characterised in that：The condensed-nuclei aromatics salt compounds such as formula
Shown in II：
Wherein, R2For CH3、OH、NH2Or NO2, Y2For COOM2Or SO3M2, M2For Na+、K+、Ca2+Or NH4 +, R2Group is on phenyl ring
Position in Y2Ortho position, meta or para position.
7. a kind of high efficiency water reducing agent according to claim 6, it is characterised in that：The condensed-nuclei aromatics salt compounds are selected from
4- methyl naphthalene potassium formates, 2- methyl naphthalene sodium formates, 2- methyl naphthalene sodium formates, 3- naphthylamine sulfonic acid sodium, 4- amino naphthalenes ammonium formates, 4-
The mixing of one or more in croceine acid potassium, 3- amino naphthalenes sodium formates, 3- nitros-naphthoic acid calcium.
8. the preparation method of a kind of high efficiency water reducing agent described in claim 1, it is characterised in that：Comprise the following steps：
(1) mononuclear aromatics salt compounds, condensed-nuclei aromatics salt compounds, catalyst and water are mixed；
(2) ketone compounds are added, heats to 50～55 DEG C of reactions；
(3) Deca aldehyde compound, drips off in 60～90min；
(4) 90～95 DEG C are warming up to, 2～5min of insulation reaction；Cooling discharge, obtains final product.
9. the preparation method of a kind of high efficiency water reducing agent according to claim 8, it is characterised in that：The catalyst is selected from hydrogen
One or more in sodium oxide, potassium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, ammonia, sodium phosphate, sodium tetraborate it is mixed
Compound；Catalyst amount for reaction raw materials gross weight 0.5%～5.0%.
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| CN102321227A (en) * | 2011-05-27 | 2012-01-18 | 江苏博特新材料有限公司 | Sulfonated-acetone condensate water reducing agent and preparation method thereof |
| CN103450415A (en) * | 2013-08-28 | 2013-12-18 | 江苏博特新材料有限公司 | Multifunctional concrete additive and preparation method thereof |
| CN103641354A (en) * | 2013-11-29 | 2014-03-19 | 山东七星岩建材科技有限公司 | Environment-friendly concrete superplasticizer and preparation method thereof |
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| CN102321227A (en) * | 2011-05-27 | 2012-01-18 | 江苏博特新材料有限公司 | Sulfonated-acetone condensate water reducing agent and preparation method thereof |
| CN103450415A (en) * | 2013-08-28 | 2013-12-18 | 江苏博特新材料有限公司 | Multifunctional concrete additive and preparation method thereof |
| CN103641354A (en) * | 2013-11-29 | 2014-03-19 | 山东七星岩建材科技有限公司 | Environment-friendly concrete superplasticizer and preparation method thereof |
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