CN105037670A - 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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- CN105037670A CN105037670A CN201510019479.8A CN201510019479A CN105037670A CN 105037670 A CN105037670 A CN 105037670A CN 201510019479 A CN201510019479 A CN 201510019479A CN 105037670 A CN105037670 A CN 105037670A
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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, particularly a kind of concrete high efficiency water reducing agent and preparation method thereof.
Background technology
High efficiency water reducing agent is a kind of maintaining under the constant condition of concrete slump, reduces the concrete admixture of mixing water amount.In concrete, add high efficiency water reducing agent, its workability can be improved, reduce unit consumption of water, concrete strength is increased and improves weather resistance.
Early 1930s, colonial uses sulfonated lignin to improve concrete workability as water reducer, and concrete is changed to liquid concrete by low slump concrete.The sixties in 20th century, Japan and Germany succeed in developing naphthalene sulfonic acidformaldehyde condensation product and sulfonated melamine compound condenses high efficiency water reducing agent in succession, further improve concrete performance.Apply more high efficiency water reducing agent in the market and mainly contain naphthalenesulfonate high efficiency water reducing agent, aliphatic hydroxyl sulphonate high efficiency water reducing agent and sulfamate high-effective water-reducing agent.Along with science and technology and the development of producing, the appearance of various large volume, strong concrete structure proposes higher requirement to concrete quality, thus also requires that concrete high efficiency water reducing agent has higher water-reducing rate and low slump-loss.In this context, traditional high efficiency water reducing agent just exposes the shortcoming that diminishing is not enough and slump-loss is too fast.
In order to overcome the deficiency of above-mentioned high efficiency water reducing agent in diminishing and function of slump protection, bibliographical information carries out the research of modification to traditional high efficiency water reducing agent.
Chinese patent CN100340518C discloses a kind of preparation method of poly carboxylic acid modified fatty water-reducing agent, comprises poly carboxylic acid modified dose of preparation and properties-correcting agent participation acetone-formaldehyde polycondensation two steps.Obtained water reducer has high water-reducing rate, can reach the water-reducing rate of 21% when volume is 0.6%, and concrete 90 days ultimate compression strength improves more than 30%.Product performance stablize, standing storage without layering, without precipitation, winter nodeless mesh.But the production technique of this product adopts two-step approach preparation, and production efficiency is low; Meanwhile, poly carboxylic acid modified dose of price is higher, makes this modified product can not produce obvious economic benefit in popularization.
Chinese patent CN101824128B provides a kind of beta-naphthol produced waste liquid modified amido sulfoacid salt high efficiency water reducing agent and preparation method.The preparation of this water reducer comprises sulfonation reaction and polycondensation two steps: sulfonation reaction is under 105 ~ 110 degree, is that sulphonating agent and naphthol reaction obtain naphthol sulfonate with the vitriol oil; Polycondensation uses pH value regulator regulation system to alkalescence, and in the basic conditions, phenol, formaldehyde, Sodium sulfanilate and naphthol sulfonate are polymerized, and obtain liquid product.This invention product significantly reduces the cost of modified sulfamate high-effective water-reducing agent, and when volume is 0.3 ~ 0.8%, corresponding water-reducing rate is 16 ~ 24%.But two steps of this process of producing product are carried out respectively under strong acid and strong alkaline condition, require higher to production unit, the phenol in raw material and naphthols toxicity greatly, are unfavorable for safety and environmental protection.
Therefore, urgently research and develop and a kind ofly have excellent diminishing and function of slump protection concurrently, and the simple high-performance water reducing agent product of production technique.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides and a kind ofly can improve the mobility of cement slurry and the high efficiency water reducing agent of stability, and its preparation technology is simple, safety and environmental protection.
Technical scheme:
Applicant is found by a large amount of experiments: in the building-up process of aldehyde ketone resin, adds the water miscible mononuclear aromatics salt compounds with multiple functional group and condensed-nuclei aromatics salt compounds, can obtain water-soluble aldehyde ketone polycondensate; This polycondensate has backbone structure and the monocycle/condensed-nuclei aromatics salt branched structure of aliphatic hydrocarbon-aromatic hydrocarbons compound.
Simultaneously, applicant is found by a large amount of experiments: the carboxyl in mononuclear aromatics salt compounds structure, sulfonate functional groups have very strong adsorptive power at cement particle surface, polycondensate can be made to be arranged in cement particle surface, and make surface with like charges, under the effect of electrostatic repulsion, cement slurry stable suspersion is in water.In addition, in the backbone structure of aliphatic hydrocarbon-aromatic hydrocarbons compound, aliphatic hydrocarbon moiety is soft segment and aromatic moiety is rigidity, both compounds under certain proportion, main chain is made to have suitable snappiness on the whole, the impact of environmental factors around can lower whole molecule conformation, be adsorbed on cement particle surface with the most stable three-dimensional conformation.Except integral part main chain, monocycle/condensed-nuclei aromatics salt compounds also constitutes the side chain of polycondensate, between aromatic hydrocarbon ring the stacking reactive force of Π-Π induction under, the side chain of polycondensate must to arrange in order cement particle surface is tight and regular, what increase between cement granules is sterically hindered, makes it not easily assemble sedimentation.
Applicant is ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed-nuclei aromatics salt compounds quaternary copolycondensation reaction system based on above principle design, has prepared water-soluble high-efficient water reducer product by four components in the polycondensation of aqueous phase.This high efficiency water reducing agent product can must protect cement granules very well, provides good dispersion and stable effect.
A kind of high efficiency water reducing agent provided by the invention, is made up of ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed-nuclei aromatics salt compounds; Wherein, the mol ratio of ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed-nuclei aromatics salt compounds is 1.0:(2.0 ~ 3.5): (0.25 ~ 0.45): (0.15 ~ 0.35).
As preferably, described ketone compounds is selected from the mixing of one or more in acetone, butanone, pimelinketone, methyl phenyl ketone.
Preferred as another kind, described aldehyde compound is selected from the mixing of one or more in formaldehyde, acetaldehyde, furfural, phenyl aldehyde.
Preferred as another kind, described mononuclear aromatics salt compounds is such as formula shown in I:
Wherein, R
1for H, CH
3, OH, NH
2or NO
2; Y
1for COOM
1or SO
3m
1, M
1for Na
+, K
+, Ca
2+or NH
4 +; R
1the position of group on phenyl ring is at Y
1ortho position, a position or contraposition.
As preferred further, described mononuclear aromatics salt compounds is selected from the mixing of one or more in P-hydroxybenzoic acid sodium, Sodium Benzoate, p-hydroxy benzenyl sulfonate sodium, o-methyl-benzene ammonium sulphonate, o-Carboxynitrobenzene calcium, m-hydroxybenzenesulfonic acid sodium, potassium ρ-aminobenzoate.
Preferred as another kind, described condensed-nuclei aromatics salt compounds is such as formula shown in II:
Wherein, R
2for CH
3, OH, NH
2or NO
2, Y
2for COOM
2or SO
3m
2, M
2for Na
+, K
+, Ca
2+or NH
4 +, R
2the position of group on phenyl ring is at Y
2ortho position, a position or contraposition.
As preferred further, described condensed-nuclei aromatics salt compounds is selected from the mixing of one or more in 4-methylnaphthalene potassium formiate, 2-methylnaphthalene sodium formiate, 2-methylnaphthalene sodium formiate, 3-napthylamine sulfonic acid sodium, 4-amino naphthalenes ammonium formiate, 4-croceine acid potassium, 3-amino naphthalenes sodium formiate, 3-nitro-naphthoic acid calcium.
Preferred as another kind, the weight-average molecular weight Mw of described high efficiency water reducing agent is between 2000 ~ 20000, and solid content is 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 is between 2000 ~ 20000, this is because: the too low situation of molecular weight is generally because polycondensation is insufficient, extent of polymerization is not high to be caused, such product solid content is lower than normal product, cause the waste of raw material, and its water-reducing property is also bad; Molecular weight is too high, proves that polymerization process there occurs three-dimensional polycondensation, is cross-linked into net between polymer segment, and sub-chain motion ability declines, and product performance also decrease; In addition, often viscosity is very large for the product of high molecular, and extreme case even can form water-fast gel, brings risk to production.
Present invention also offers the preparation method of above-mentioned high efficiency water reducing agent, comprise the following steps:
(1) mononuclear aromatics salt compounds, condensed-nuclei aromatics salt compounds, catalyzer and water are mixed;
(2) add ketone compounds, heat to 50 ~ 55 DEG C of reactions;
(3) drip aldehyde compound, drip off in 60 ~ 90min;
(4) 90 ~ 95 DEG C are warming up to, insulation reaction 2 ~ 5min; Cooling discharge, to obtain final product.
Wherein, described catalyzer is selected from the mixture of one or more in sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium carbonate, salt of wormwood, ammoniacal liquor, sodium phosphate, sodium tetraborate; Catalyst levels is 0.5% ~ 5.0% of reaction raw materials gross weight.
Wherein, amount of water is 25 ~ 60% for making polymerization concentration; Wherein polymerization concentration is for after adding aldehyde compound, the concentration in insulation reaction stage.
Beneficial effect: high efficiency water reducing agent production technique provided by the invention is easy, with short production cycle, energy consumption is low, with low cost, water-reducing rate is high, guarantor is collapsed Be very effective, simultaneously, raw materials used as aromatised salt compound are all nontoxic or low toxicity materials, Product Safety is good, production process three-waste free discharge, environmental sound, environmental protection.
Embodiment
The concrete preparation process of what following examples were detailed describe product of the present invention, these embodiments provide by way of illustration, its object is to person skilled in the art can be understood content of the present invention and implement according to this, but these embodiments never limit the scope of the invention.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
The raw material used in the embodiment of the present invention is all the commercialization Chemicals can bought from market.Reaction in the embodiment of the present invention is being furnished with electric mixer, thermometer, carries out in the reaction vessel of prolong and dropping funnel and heating unit.
In the embodiment of the present invention formaldehyde used to be mass concentration be 37.0% the aqueous solution.
Polymericular weight in the embodiment of the present invention uses gel aqueous phase permeation chromatograph (GPC) to measure, and instrument parameter is: ShodexSB806+803 chromatographic column, the NaNO of 0.1M
3the aqueous solution as moving phase, flow velocity 1.0mL/min, ShodexRI-71 type differential refraction detector, polyoxyethylene glycol standard specimen.
Embodiment 1
First be the P-hydroxybenzoic acid sodium of 56 grams (0.35mol) by weight, the 3-amino naphthalenes sodium formiate of 52 grams (0.25mol), the sodium hydroxide of 7.5 grams (3.0wt%) and 172 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol), be warmed up to 50 DEG C, then in 90 minutes, drip the formalin of 227 grams (2.8mol), it is 75 DEG C that dropping terminates rear system temperature, then be heated to 90 DEG C, insulation reaction 4 hours, obtains liquid product, solid content is 41%, and molecular weight is 5300.
Embodiment 2
First be (0.25mol) Sodium Benzoate of 36 grams by weight, the 3-amino naphthalenes sodium formiate of 73 grams (0.35mol), the sodium hydroxide of 8.2 grams (3.0wt%) and 164 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol), be warmed up to 50 DEG C, then in 90 minutes, drip the formalin of 284 grams (3.5mol), it is 85 DEG C that dropping terminates rear system temperature, then be heated to 95 DEG C, insulation reaction 5 hours, obtains liquid product, solid content is 41%, and molecular weight is 6700.
Embodiment 3
First be the o-methyl-benzene ammonium sulphonate of 85 grams (0.45mol) by weight, the 4-croceine acid potassium of 92 grams (0.35mol), the sodium carbonate of 22.4 grams (5.0wt%) and 313 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol), be warmed up to 52 DEG C, then in 60 minutes, drip the phenyl aldehyde of 212 grams (2.0mol), it is 65 DEG C that dropping terminates rear system temperature, then be heated to 95 DEG C, insulation reaction 3 hours, obtains liquid product, solid content is 55%, and molecular weight is 10500.
Embodiment 4
First be the p-hydroxy benzenyl sulfonate sodium of 69 grams (0.35mol) by weight, the 2-methylnaphthalene sodium formiate of 31 grams (0.15mol), the sodium hydroxide of 8.5 grams (0.5wt%) and 577 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol) gram, be warmed up to 55 DEG C, then in 60 minutes, drip the formalin of 162 grams (2.0mol), it is 65 DEG C that dropping terminates rear system temperature, then be heated to 93 DEG C, insulation reaction 2 hours, obtains liquid product, solid content is 23%, and molecular weight is 2000.
Embodiment 5
First be the m-hydroxybenzenesulfonic acid sodium of 49 grams (0.25mol) by weight, the 4-methylnaphthalene potassium formiate of 56 grams (0.25mol) gram, 6.2 grams of (2.0wt%) sodium hydroxide, the sodium phosphate of 3.1 grams (1.0wt%) and 519 grams of water join in reactor, stir, add the pimelinketone of 30 grams (0.30mol) and the acetone of 41 grams (0.70mol), be warmed up to 55 DEG C, the formalin of the furfural of 71 grams (0.74mol) and 167 grams (2.06mol) is mixed in loading dropping funnel, then dripped into reactor in 90 minutes, it is 85 DEG C that dropping terminates rear system temperature, then 90 DEG C are heated to, insulation reaction 3 hours, obtain liquid product, solid content is 31%, molecular weight is 15000.
Embodiment 6
First by the o-Carboxynitrobenzene calcium of 0.30mol, the 2-methylnaphthalene sodium formiate of 0.25mol, reaction raw materials gross weight 0.5% potassium hydroxide and 500 grams of water join in reactor, stir, add 1mol butanone, be warmed up to 55 DEG C, in 60 minutes, then drip the acetaldehyde solution of 3.0mol, it is 85 DEG C that dropping terminates rear system temperature, then be heated to 90 DEG C, insulation reaction 3 hours, obtains liquid product, solid content is 25%, and molecular weight is 6000.
Embodiment 7
First by the potassium ρ-aminobenzoate of 0.30mol, the 3-napthylamine sulfonic acid sodium of 0.25mol, reaction raw materials gross weight 5.0% calcium hydroxide and 500 grams of water join in reactor, stir, add 1mol butanone, be warmed up to 55 DEG C, in 60 minutes, then drip the phenyl aldehyde aqueous solution of 3.0mol, it is 85 DEG C that dropping terminates rear system temperature, then be heated to 90 DEG C, insulation reaction 3 hours, obtains liquid product, solid content is 31%, and molecular weight is 5500.
Embodiment 8
First by the potassium ρ-aminobenzoate of 0.30mol, the 4-amino naphthalenes ammonium formiate of 0.25mol, reaction raw materials gross weight 2% salt of wormwood and 500 grams of water join in reactor, stir, add 1mol methyl phenyl ketone, be warmed up to 55 DEG C, in 60 minutes, then drip the formalin of 3.0mol, it is 85 DEG C that dropping terminates rear system temperature, then be heated to 90 DEG C, insulation reaction 3 hours, obtains liquid product, solid content is 32%, and molecular weight is 19000.
Embodiment 9
First by the potassium ρ-aminobenzoate of 0.30mol, 3-nitro-naphthoic acid the calcium of 0.25mol, the ammoniacal liquor of 1% of reaction raw materials gross weight, the sodium tetraborate of 2% of reaction raw materials gross weight and 500 grams of water join in reactor, stir, add 1mol methyl phenyl ketone, be warmed up to 55 DEG C, then in 60 minutes, drip the formalin of 3.0mol, it is 85 DEG C that dropping terminates rear system temperature, then be heated to 90 DEG C, insulation reaction 3 hours, obtains liquid product, solid content is 28%, and molecular weight is 16000.
Comparative example 1
First be the P-hydroxybenzoic acid sodium of 56 grams (0.35mol) by weight, the sodium hydroxide of 7.5 grams (3.0wt%) and 172 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol), be warmed up to 50 DEG C, then in 60 ~ 90 minutes, drip the formalin of 227 grams (2.8mol), it is 75 DEG C that dropping terminates rear system temperature, then 90 DEG C are heated to, insulation reaction 4 hours, obtain liquid product, solid content is 36%, and molecular weight is 5100.
Comparative example 2
First be (0.25mol) Sodium Benzoate of 36 grams by weight, the 3-amino naphthalenes sodium formiate of 73 grams (0.35mol), the sodium hydroxide of 8.2 grams (3.0wt%) and 164 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol), be warmed up to 50 DEG C, then in 60 ~ 90 minutes, drip the formalin of 284 grams (3.5mol), it is 85 DEG C that dropping terminates rear system temperature, then be heated to 95 DEG C, insulation reaction 5 hours, obtains liquid product, solid content is 38%, and molecular weight is 7000.
Comparative example 3
First be the o-methyl-benzene ammonium sulphonate of 85 grams (0.45mol) by weight, the 4-croceine acid potassium of 92 grams (0.35mol), the sodium carbonate of 22.4 grams (5.0wt%) and 313 grams of water join in reactor, stir, add the acetone of 58 grams (1.0mol), be warmed up to 52 DEG C, then in 60 minutes, drip the phenyl aldehyde of 212 grams (2.0mol), it is 65 DEG C that dropping terminates rear system temperature, then be heated to 95 DEG C, insulation reaction 8 hours, obtains liquid product, solid content is 55%, and molecular weight is 51000.
Application Example
In order to evaluate high efficiency water reducing agent prepared by the present invention to the dispersing property of cement slurry and dispersion hold facility, carry out flowing degree of net paste of cement test with reference to standard GB/T 8077-2000.In Application Example of the present invention, adopt cement to be 300g reference cement, amount of water is 87g, by regulating admixture dosage (folding solid calculate), making initial paste flowing degree basically identical, measuring its paste flowing degree changing conditions after 1 hour 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 water reducing 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 provided by Su Bote novel material limited-liability company.
The paste flowing degree test result of embodiment and commercially available high efficiency water reducing agent lists in table 1.Result as can be seen from table 1, when the initial paste flowing degree of cement is identical, water reducer volume needed for product of the present invention is used to be starkly lower than commercially available naphthalene system and aliphatic high-efficiency water reducing agent, and both after using the maintenance of the degree of mobilization after 1 of product of the present invention hour to be also obviously better than.Compared with commercially available aminosulfonate-based superplasticizer, the initial water-reducing property of product of the present invention is suitable with it, but guarantor is collapsed, successful is better than aminosulfonate-based superplasticizer.
The paste flowing degree test-results of table 1 embodiment and commercially available high efficiency water reducing agent
Table 2 is embodiment and the flowing degree of net paste of cement test-results of making comparative example by oneself.Wherein, comparative example 1 does not add condensed-nuclei aromatics salt compounds, and all the other preparation conditions are identical with embodiment 1; Comparative example 2 does not add mononuclear aromatics salt compounds, and all the other conditions are identical with embodiment 2; Comparative example 3 is corresponding with embodiment 3, unlike the reaction times comparatively embodiment 3 extend 6 hours.
Data declaration in table 2, when lacking condensed-nuclei aromatics salt compound (comparative example 1), the Mw change of product is little, and initial dispersion performance is constant, but dispersion retention is deteriorated.This is because when lacking condensed-nuclei aromatics compound, sterically hindered deficiency, product is not strong to the protective capability of cement granules.Although under starting condition, cement can fully disperse, and along with the prolongation of time, cement granules flocks together because of collision, then sedimentation, and degree of mobilization is diminished.
If lack mononuclear aromatics salt compounds (comparative example 2), initial dispersion degradation and degree of mobilization hold facility is constant.When lacking mononuclear aromatics salt compounds, the adsorption group number of polycondensate tails off, and adsorption efficiency is not high, needs more polycondensate for reaching identical adsorptive capacity.
Because the reaction times extends, comparative example 3 products obtained therefrom molecular weight very large (Mw=51000), much larger than the Mw=10500 of embodiment 3, and product viscosity is very large, dissolves slower in water.As can be seen from GPC, the major cause of the increase of its molecular weight creates a large amount of high molecular weight crosslinked products.Paste flowing degree test-results shows, and the performance degradation of comparative example 3, compares embodiment 3, and reaching required volume when identical degree of mobilization and degree of mobilization keep increases by 36%.
Table 2 embodiment and the flowing degree of net paste of cement test-results of making comparative example by oneself
Claims (10)
1. a high efficiency water reducing agent, is characterized in that: be made up of ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed-nuclei aromatics salt compounds; Wherein, the mol ratio of ketone compounds, aldehyde compound, mononuclear aromatics salt compounds and condensed-nuclei aromatics salt compounds is 1.0:(2.0 ~ 3.5): (0.25 ~ 0.45): (0.15 ~ 0.35).
2. a kind of high efficiency water reducing agent according to claim 1, is characterized in that: described ketone compounds is selected from the mixing of one or more in acetone, butanone, pimelinketone, methyl phenyl ketone.
3. a kind of high efficiency water reducing agent according to claim 1, is characterized in that: described aldehyde compound is selected from the mixing of one or more in formaldehyde, acetaldehyde, furfural, phenyl aldehyde.
4. a kind of high efficiency water reducing agent according to claim 1, is characterized in that: described mononuclear aromatics salt compounds is such as formula shown in I:
Wherein, R
1for H, CH
3, OH, NH
2or NO
2; Y
1for COOM
1or SO
3m
1, M
1for Na
+, K
+, Ca
2+or NH
4 +;
R
1the position of group on phenyl ring is at Y
1ortho position, a position or contraposition.
5. a kind of high efficiency water reducing agent according to claim 4, is characterized in that: described mononuclear aromatics salt compounds is selected from the mixing of one or more in P-hydroxybenzoic acid sodium, Sodium Benzoate, p-hydroxy benzenyl sulfonate sodium, o-methyl-benzene ammonium sulphonate, o-Carboxynitrobenzene calcium, m-hydroxybenzenesulfonic acid sodium, potassium ρ-aminobenzoate.
6. a kind of high efficiency water reducing agent according to claim 1, is characterized in that: described condensed-nuclei aromatics salt compounds is such as formula shown in II:
Wherein, R
2for CH
3, OH, NH
2or NO
2, Y
2for COOM
2or SO
3m
2, M
2for Na
+, K
+, Ca
2+or NH
4 +, R
2the position of group on phenyl ring is at Y
2ortho position, a position or contraposition.
7. a kind of high efficiency water reducing agent according to claim 6, is characterized in that: described condensed-nuclei aromatics salt compounds is selected from the mixing of one or more in 4-methylnaphthalene potassium formiate, 2-methylnaphthalene sodium formiate, 2-methylnaphthalene sodium formiate, 3-napthylamine sulfonic acid sodium, 4-amino naphthalenes ammonium formiate, 4-croceine acid potassium, 3-amino naphthalenes sodium formiate, 3-nitro-naphthoic acid calcium.
8. a kind of high efficiency water reducing agent according to claim 1, is characterized in that: the weight-average molecular weight Mw of described high efficiency water reducing agent is between 2000 ~ 20000, and solid content is between 23 ~ 55%.
9. the preparation method of a kind of high efficiency water reducing agent according to claim 1, is characterized in that: comprise the following steps:
(1) mononuclear aromatics salt compounds, condensed-nuclei aromatics salt compounds, catalyzer and water are mixed;
(2) add ketone compounds, heat to 50 ~ 55 DEG C of reactions;
(3) drip aldehyde compound, drip off in 60 ~ 90min;
(4) 90 ~ 95 DEG C are warming up to, insulation reaction 2 ~ 5min; Cooling discharge, to obtain final product.
10. the preparation method of a kind of high efficiency water reducing agent according to claim 8, is characterized in that: described catalyzer is selected from the mixture of one or more in sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium carbonate, salt of wormwood, ammoniacal liquor, sodium phosphate, sodium tetraborate; Catalyst levels is 0.5% ~ 5.0% of reaction raw materials gross weight.
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| WO2017113991A1 (en) * | 2015-12-31 | 2017-07-06 | 江苏苏博特新材料股份有限公司 | Preparation method for polymer and applications thereof |
| CN112830702A (en) * | 2021-01-21 | 2021-05-25 | 福州宏通建材有限公司 | High slump loss resistant additive suitable for concrete and preparation process thereof |
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| 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 |
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| CN112830702A (en) * | 2021-01-21 | 2021-05-25 | 福州宏通建材有限公司 | High slump loss resistant additive suitable for concrete and preparation process thereof |
| CN112830702B (en) * | 2021-01-21 | 2022-06-21 | 福州宏通建材有限公司 | High slump loss resistant additive suitable for concrete and preparation process thereof |
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