CN109970925A - A kind of Mobyneb polycarboxylate water-reducer and preparation method thereof - Google Patents
A kind of Mobyneb polycarboxylate water-reducer and preparation method thereof Download PDFInfo
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- CN109970925A CN109970925A CN201910297185.XA CN201910297185A CN109970925A CN 109970925 A CN109970925 A CN 109970925A CN 201910297185 A CN201910297185 A CN 201910297185A CN 109970925 A CN109970925 A CN 109970925A
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- parts
- water
- mobyneb
- reducer
- polycarboxylate water
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Classifications
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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
- C04B24/2694—Copolymers containing at least three different monomers containing polyether side chains
-
- 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
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
Abstract
The present invention relates to technical field of concrete additives, more specifically, it is related to a kind of Mobyneb polycarboxylate water-reducer and preparation method thereof, the water-reducing agent forms the polycarboxylic acids with branched structure by free radical polymerization, the space steric effect of side chain in molecule is enhanced, the water-reducing rate of water-reducing agent is improved；It introduces phosphate and improves the adsorption rate that polycarboxylate water-reducer shows in cement, further increase water-reducing rate, improve early strength；It can be substantially reduced the viscosity of concrete after the diethylene glycol (DEG) release of introducing, improve workability；Methyl methacrylate is added in Raolical polymerizable, the wrapped of cementitious material in concrete can be obviously improved with ester structure all in polycarboxylic acids molecule, to improve concrete workability, improves the apparent finish of prefabricated components, improve its decoration functions；Adaptable good, the with strong points feature of the polycarboxylate water-reducer, is particularly suitable for the production of prefabricated components, simple production process is easy to implement industrialized production.
Description
Technical field
The present invention relates to technical field of concrete additives, more specifically, are related to a kind of Mobyneb polycarboxylic acids diminishing
Agent and preparation method thereof.
Background technique
With Chinese national economy fast-developing, people are for the service performance of house, quality and living environment
It is required that being promoted increasingly.However, the building trade in China generallys use the mode of construction of cast in situs at present, take there is time-consuming
Power, inefficiency, layout is unreasonable, has a single function, many drawbacks such as environmental pollution is serious.In global resources growing tension and ring
Under the increasingly urgent situation of border pressure, for developing country, change urban construction mode and construction industry development
Mode is imperative.And assembled architecture is undoubtedly the most effective approach for solving the problems, such as this.Most attach most importance in assembled architecture
What is wanted is concrete prefabricated element, and superiority and inferiority determines the inherent quality and convenience for construction of building.With concrete technology and
The development of engineering technology, concrete prefabricated element gradually towards high precision int, structure function is decoration integrated, high performance, super
Early reinforcing etc. extends.To realize that the scale of assembled architecture concrete prefabricated element forms a complete production network, water-reducing agent is at it
In play a crucial role.
The water-reducing agent for being presently available for assembled architecture mainly has naphthalene series high-efficiency water-reducing agent and polycarboxylic acid series high-performance diminishing
Agent, wherein poly carboxylic acid series water reducer has gradually replaced naphthalene water reducer by feat of its excellent performance.But to assembled architecture
For existing water-reducing agent product there are still have a single function, drawbacks, the Wu Fayou such as specific aim is not strong, bad adaptability, compounding are spread unchecked
Effect solves high intensity, high surface finish, low viscosity in prefabricated components production process etc. and requires.
Therefore, the exploitation dedicated functional form water-reducing agent of assembled architecture is extremely urgent.The molecule of polycarboxylate water-reducer can
Design assigns a possibility that its functional diversities, can be real by Raolical polymerizable by reasonable Molecular Design
The functional group that special role is introduced in present polycarboxylic acids molecule, to realize differentiation, the functional characteristics of Composite.
Summary of the invention
In the presence of overcoming the shortcomings of the prior art, the present invention provide a kind of Mobyneb polycarboxylate water-reducer and its
Preparation method, solves that early strong effect when existing polycarboxylate water-reducer production prefabricated components is poor, cementitious material poor, concrete wrapped
The problem of poor surface smoothness.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is as follows:
A kind of Mobyneb polycarboxylate water-reducer, is prepared by following raw material: 55-70 parts of phosphorus oxychloride, 27-41 parts of acetic acid
Ethyl ester, 20-25 portion diethylene glycol (DEG), 80-95 parts of hydroxy-ethyl acrylates, 95-110 parts of triethylamines, 20-40 parts of acrylic acid, 4-10 parts of first
Base methyl acrylate, softened water, 0.2-0.9 part ascorbic acid, 0.8-2.8 parts of mercaptoethanols, 360 parts of methacrylic polyoxy second
The hydrogen peroxide of alkene ether, 30% concentration of 1-4 part.
Preferably, a kind of Mobyneb polycarboxylate water-reducer, is prepared by following raw material: 60-65 parts of phosphorus oxychloride,
31-36 parts of ethyl acetate, 20-23 portions of diethylene glycol (DEG)s, 85-90 parts of hydroxy-ethyl acrylates, 100-105 parts of triethylamines, 25-30 parts of propylene
Acid, 5-8 parts of methyl methacrylates, softened water, 0.4-0.8 parts of ascorbic acid, 1.0-2.5 parts of mercaptoethanols, 360 parts of methyl alkene
The hydrogen peroxide of propyl polyoxyethylene ether, 30% concentration of 2-3 part.
Further, the diethylene glycol (DEG) can be replaced ethylene glycol.
Further, the mercaptoethanol can be replaced thioacetic acid, mercaptopropionic acid, methylpropene sodium sulfonate.
Further, the hydrogen peroxide and ascorbic acid collaboration can be replaced ammonium sulfate-as redox initiator and resist
Bad hematic acid or ammonium persulfate-sodium bisulfite.
Further, the ammonium persulfate can be replaced potassium peroxydisulfate.
Further, the methyl allyl polyoxyethylene ether molecular weight is 1200-6000.
A kind of preparation method of Mobyneb polycarboxylate water-reducer, comprising the following steps:
S1,55-70 parts of phosphorus oxychloride and 27-41 parts of ethyl acetate are added in four-hole boiling flask, control pot temperature is 10-15
DEG C, the 3h in four-hole boiling flask is slowly added dropwise in 20-25 portions of diethylene glycol (DEG)s, the gas generated in four-hole boiling flask is exported simultaneously with guiding device
It is absorbed with lye, reacts 1h after being added dropwise to complete again；
S2, reaction kettle is warming up to 25-30 DEG C, by the mixed solution of 80-95 parts of hydroxy-ethyl acrylates and 95-110 parts of triethylamines
2h in a kettle is slowly added dropwise, then heats to 45-50 DEG C, reacts 12h under reflux state；
Ammonium salt is removed by suction filtration under vacuum in S3, S2 after reaction, is distilled at -0.085Mpa pressure and 70 DEG C, and acetic acid is removed
Ethyl ester obtains acroleic acid esterification object；
S4, weigh acrylate compound in 15-30 parts of S3, with 20-40 parts of acrylic acid, 4-10 parts of methyl methacrylates and
50 parts of softened waters are miscible, form solution A after shaking up；
S5,0.2-0.9 parts of ascorbic acid and 0.8-2.8 parts of mercaptoethanols are weighed, with the miscible rear formation B solution of 50 parts of softened waters；
S6,300-500 parts of softened waters and 360 parts of methyl allyl polyoxyethylene ethers are added in four-hole boiling flask, wherein methyl alkene
The molecular weight of propyl polyoxyethylene ether is 1200-6000, and the double of 30% concentration of 1-4 part are added in 40-70 DEG C of temperature holding after dissolving
Solution A, B solution are added dropwise in four-hole boiling flask by oxygen water respectively, time for adding 2-4h；
S7, the subsequent continuous insulation reaction 1-2h of completion of dropwise addition, and appropriate softened water is added to get certain density target product is arrived.
Compared with prior art, the advantageous effect of present invention is that:
The present invention provides a kind of Mobyneb polycarboxylate water-reducer and preparation method thereof, which passes through free radical polymerization shape
At the polycarboxylic acids with branched structure, the space steric effect of side chain in molecule is enhanced, is subtracted to improve to a certain extent
The water-reducing rate of aqua；Phosphate is introduced, it has stronger adsorptivity and anchoring than carboxyl to cement, to improve poly- carboxylic
The adsorption rate that sour water-reducing agent shows in cement, further increases water-reducing rate, to realize that concrete keeps original workability not
Water consumption is reduced in the case where change, improves early strength；Diethylene glycol (DEG) structural unit is introduced, it can be substantially reduced coagulation after discharging
The viscosity of soil improves workability；It joined methyl methacrylate in Raolical polymerizable, it is the same as in polycarboxylic acids molecule
All ester structures can be obviously improved the wrapped of cementitious material in concrete, to improve concrete workability, improve pre-
The apparent finish of component processed, improves its decoration functions；Adaptable good, the with strong points feature of the polycarboxylate water-reducer,
It is particularly suitable for the production of prefabricated components, simple production process is easy to implement industrialized production.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of Mobyneb polycarboxylate water-reducer, is prepared by following raw material: 55-70 parts of phosphorus oxychloride, 27-41 parts
Ethyl acetate, 20-25 portion diethylene glycol (DEG), 80-95 parts of hydroxy-ethyl acrylates, 95-110 parts of triethylamines, 20-40 parts of acrylic acid, 4-10
Part methyl methacrylate, softened water, 0.2-0.9 parts of ascorbic acid, 0.8-2.8 parts of mercaptoethanols, 360 parts of methacrylics are poly-
The hydrogen peroxide of ethylene oxide ether, 30% concentration of 1-4 part.
Preferably, a kind of Mobyneb polycarboxylate water-reducer, is prepared by following raw material: 60-65 parts of phosphorus oxychloride,
31-36 parts of ethyl acetate, 20-23 portions of diethylene glycol (DEG)s, 85-90 parts of hydroxy-ethyl acrylates, 100-105 parts of triethylamines, 25-30 parts of propylene
Acid, 5-8 parts of methyl methacrylates, softened water, 0.4-0.8 parts of ascorbic acid, 1.0-2.5 parts of mercaptoethanols, 360 parts of methyl alkene
The hydrogen peroxide of propyl polyoxyethylene ether, 30% concentration of 2-3 part.
Further, the diethylene glycol (DEG) can be replaced ethylene glycol.
Further, the mercaptoethanol can be replaced thioacetic acid, mercaptopropionic acid, methylpropene sodium sulfonate.
Further, the hydrogen peroxide and ascorbic acid collaboration can be replaced ammonium sulfate-as redox initiator and resist
Bad hematic acid or ammonium persulfate-sodium bisulfite.
Further, the ammonium persulfate can be replaced potassium peroxydisulfate.
Further, the methyl allyl polyoxyethylene ether molecular weight is 1200-6000.
A kind of preparation method of Mobyneb polycarboxylate water-reducer, comprising the following steps:
S1,55-70 parts of phosphorus oxychloride and 27-41 parts of ethyl acetate are added in four-hole boiling flask, control pot temperature is 10-15
DEG C, the 3h in four-hole boiling flask is slowly added dropwise in 20-25 portions of diethylene glycol (DEG)s, the gas generated in four-hole boiling flask is exported simultaneously with guiding device
It is absorbed with lye, reacts 1h after being added dropwise to complete again；
S2, reaction kettle is warming up to 25-30 DEG C, by the mixed solution of 80-95 parts of hydroxy-ethyl acrylates and 95-110 parts of triethylamines
2h in a kettle is slowly added dropwise, then heats to 45-50 DEG C, reacts 12h under reflux state；
Ammonium salt is removed by suction filtration under vacuum in S3, S2 after reaction, is distilled at -0.085Mpa pressure and 70 DEG C, and acetic acid is removed
Ethyl ester obtains acroleic acid esterification object；
S4, weigh acrylate compound in 15-30 parts of S3, with 20-40 parts of acrylic acid, 4-10 parts of methyl methacrylates and
50 parts of softened waters are miscible, form solution A after shaking up；
S5,0.2-0.9 parts of ascorbic acid and 0.8-2.8 parts of mercaptoethanols are weighed, with the miscible rear formation B solution of 50 parts of softened waters；
S6,300-500 parts of softened waters and 360 parts of methyl allyl polyoxyethylene ethers are added in four-hole boiling flask, wherein methyl alkene
The molecular weight of propyl polyoxyethylene ether is 1200-6000, and the double of 30% concentration of 1-4 part are added in 40-70 DEG C of temperature holding after dissolving
Solution A, B solution are added dropwise in four-hole boiling flask by oxygen water respectively, time for adding 2-4h；
S7, the subsequent continuous insulation reaction 1-2h of completion of dropwise addition, and appropriate softened water is added to get certain density target product is arrived.
The water-reducing agent water-reducing rate prepared through this embodiment is 31%；Early strength of concrete: 1d compressive strength rate >=
185%, 3d compressive strength rate >=175%, 7d compressive strength rate >=150%；Concrete viscosity: rewinding emptying time 2-4s；Concrete
Bleeding rate ratio≤45%, surface is regular, no sand line, bubble-free hole.
Embodiment 1:
(1) 62g phosphorus oxychloride is accurately added in the 500ml four-hole boiling flask for having agitating device, gas eduction unit, thermometer
With 30ml ethyl acetate, controlling pot temperature by water-bath is 10-15 DEG C, opens stirring, opens gas eduction unit, use is compacted
The NaOH that 21.2g diethylene glycol (DEG) is 10% to reaction kettle, time for adding 3h, while derived gas concentration is slowly added dropwise in dynamic pump
Solution absorbs, and reacts 1h after completion of dropwise addition again；
(2) reaction kettle is warming up to 25-30 DEG C, 91.7g hydroxy-ethyl acrylate is slowly added dropwise with peristaltic pump and 101g triethylamine is mixed
Solution is closed, time for adding 2h, water-bath is controlled after completion of dropwise addition to be made to be warming up to 45-50 DEG C in flask, is continued at reflux
React 12h；
(3) ammonium salt is removed by suction filtration under vacuum after reaction, is distilled at -0.085Mpa pressure and 70 DEG C, acetic acid second is removed
Ester obtains acroleic acid esterification object；
(4) 20g acrylate compound obtained in the previous step is accurately weighed, with 35g acrylic acid, 8g methyl methacrylate and 50g
Softened water is miscible, forms solution A after shaking up；
(5) 0.6g ascorbic acid and 2.4g mercaptoethanol are weighed, with the miscible rear formation B solution of 50g softened water；
(6) methyl allyl polyoxyethylene ether that 400g softened water and 360g molecular weight are 2400 is added in four-hole boiling flask, temperature
The hydrogen peroxide of 30% concentration of 2g is added in 60 DEG C of degree holding after dissolving, A, B solution are added dropwise in four-hole boiling flask respectively, time for adding
For 2.5h；
(7) the subsequent continuous insulation reaction 1.5h of completion of dropwise addition, and 150g softened water is added and is produced to get the target for being 39.5% to concentration
Object.
Embodiment 2:
A kind of preparation method of Mobyneb polycarboxylate water-reducer, comprising the following steps:
(1) 64g phosphorus oxychloride is accurately added in the 500ml four-hole boiling flask for having agitating device, gas eduction unit, thermometer
With 35ml ethyl acetate, controlling pot temperature by water-bath is 10-15 DEG C, opens stirring, opens gas eduction unit, use is compacted
It is molten that the NaOH that 25g ethylene glycol to reaction kettle, time for adding 3h, while derived gas concentration is 10% is slowly added dropwise in dynamic pump
Liquid absorbs, and reacts 1h after completion of dropwise addition again；
(2) reaction kettle is warming up to 25-30 DEG C, 93g hydroxy-ethyl acrylate is slowly added dropwise with peristaltic pump and 105g triethylamine mixes
Solution, time for adding 2h, water-bath is controlled after completion of dropwise addition to be made to be warming up to 45-50 DEG C in flask, is continued at reflux anti-
Answer 12h；
(3) ammonium salt is removed by suction filtration under vacuum after reaction, is distilled at -0.085Mpa pressure and 70 DEG C, acetic acid second is removed
Ester obtains acroleic acid esterification object；
(4) 25g acrylate compound obtained in the previous step is accurately weighed, with 30g acrylic acid, 6g methyl methacrylate and 50g
Softened water is miscible, forms solution A after shaking up；
(5) 0.6g ascorbic acid and 2.2g mercaptopropionic acid are weighed, with the miscible rear formation B solution of 50g softened water；
(6) methyl allyl polyoxyethylene ether that 400g softened water and 360g molecular weight are 2400 is added in four-hole boiling flask, temperature
3g ammonium persulfate is added after dissolving in 48 DEG C of degree holding, A, B solution is added dropwise in four-hole boiling flask respectively, time for adding 2.5h；
(7) the subsequent continuous insulation reaction 1.5h of completion of dropwise addition, and 150g softened water is added and is produced to get the target for being 39.6% to concentration
Object.
Only presently preferred embodiments of the present invention is explained in detail above, but the present invention is not limited to above-described embodiment,
Within the knowledge of a person skilled in the art, it can also make without departing from the purpose of the present invention each
Kind variation, various change should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of Mobyneb polycarboxylate water-reducer, which is characterized in that prepared by following raw material: 55-70 parts of trichlorine oxygen
Phosphorus, 27-41 part ethyl acetate, 20-25 portions of diethylene glycol (DEG)s, 80-95 parts of hydroxy-ethyl acrylates, 95-110 parts of triethylamines, 20-40 part third
Olefin(e) acid, 4-10 part methyl methacrylate, softened water, 0.2-0.9 parts of ascorbic acid, 0.8-2.8 parts of mercaptoethanols, 360 parts of first
The hydrogen peroxide of base allyl polyethenoxy ether, 30% concentration of 1-4 part.
2. a kind of Mobyneb polycarboxylate water-reducer according to claim 1, which is characterized in that by following raw material
Preparation: 60-65 parts of phosphorus oxychloride, 31-36 parts of ethyl acetate, 20-23 portions of diethylene glycol (DEG)s, 85-90 parts of hydroxy-ethyl acrylates, 100-
105 parts of triethylamines, 25-30 parts of acrylic acid, 5-8 parts of methyl methacrylates, softened water, 0.4-0.8 parts of ascorbic acid, 1.0-
2.5 parts of mercaptoethanols, 360 parts of methyl allyl polyoxyethylene ethers, 30% concentration of 2-3 part hydrogen peroxide.
3. a kind of Mobyneb polycarboxylate water-reducer according to claim 1 or 2, it is characterised in that: the diethylene glycol (DEG) can
Replace with ethylene glycol.
4. a kind of Mobyneb polycarboxylate water-reducer according to claim 1 or 2, it is characterised in that: the mercaptoethanol
It can be replaced thioacetic acid, mercaptopropionic acid, methylpropene sodium sulfonate.
5. a kind of Mobyneb polycarboxylate water-reducer according to claim 1 or 2, it is characterised in that: the hydrogen peroxide and
Ascorbic acid collaboration can be replaced ammonium sulfate-ascorbic acid or ammonium persulfate-sodium bisulfite as redox initiator.
6. a kind of Mobyneb polycarboxylate water-reducer according to claim 5, it is characterised in that: the ammonium persulfate can replace
It is changed to potassium peroxydisulfate.
7. a kind of Mobyneb polycarboxylate water-reducer according to claim 1 or 2, it is characterised in that: the methallyl
Base polyoxyethylene ether molecular weight is 1200-6000.
8. a kind of preparation method of Mobyneb polycarboxylate water-reducer, which comprises the following steps:
S1,55-70 parts of phosphorus oxychloride and 27-41 parts of ethyl acetate are added in four-hole boiling flask, control pot temperature is 10-15
DEG C, the 3h in four-hole boiling flask is slowly added dropwise in 20-25 portions of diethylene glycol (DEG)s, the gas generated in four-hole boiling flask is exported simultaneously with guiding device
It is absorbed with lye, reacts 1h after being added dropwise to complete again；
S2, reaction kettle is warming up to 25-30 DEG C, by the mixed solution of 80-95 parts of hydroxy-ethyl acrylates and 95-110 parts of triethylamines
2h in a kettle is slowly added dropwise, then heats to 45-50 DEG C, reacts 12h under reflux state；
Ammonium salt is removed by suction filtration under vacuum in S3, S2 after reaction, is distilled at -0.085Mpa pressure and 70 DEG C, and acetic acid is removed
Ethyl ester obtains acroleic acid esterification object；
S4, weigh acrylate compound in 15-30 parts of S3, with 20-40 parts of acrylic acid, 4-10 parts of methyl methacrylates and
50 parts of softened waters are miscible, form solution A after shaking up；
S5,0.2-0.9 parts of ascorbic acid and 0.8-2.8 parts of mercaptoethanols are weighed, with the miscible rear formation B solution of 50 parts of softened waters；
S6,300-500 parts of softened waters and 360 parts of methyl allyl polyoxyethylene ethers are added in four-hole boiling flask, wherein methyl alkene
The molecular weight of propyl polyoxyethylene ether is 1200-6000, and the double of 30% concentration of 1-4 part are added in 40-70 DEG C of temperature holding after dissolving
Solution A, B solution are added dropwise in four-hole boiling flask by oxygen water respectively, time for adding 2-4h；
S7, the subsequent continuous insulation reaction 1-2h of completion of dropwise addition, and appropriate softened water is added to get certain density target product is arrived.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112724414A (en) * | 2021-01-21 | 2021-04-30 | 江苏奥莱特新材料股份有限公司 | Polycarboxylate superplasticizer with polyphosphonate side chains and preparation method thereof |
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| CN107793447A (en) * | 2017-11-01 | 2018-03-13 | 贵州师范学院 | A kind of P2O5Dispersion method prepares the method for phosphate function monomer, purposes |
| CN109467649A (en) * | 2018-10-24 | 2019-03-15 | 中建西部建设西南有限公司 | A kind of high-strength concrete viscosity reduction type polycarboxylate water-reducer and preparation method thereof |
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2019
- 2019-04-15 CN CN201910297185.XA patent/CN109970925A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107793447A (en) * | 2017-11-01 | 2018-03-13 | 贵州师范学院 | A kind of P2O5Dispersion method prepares the method for phosphate function monomer, purposes |
| CN109467649A (en) * | 2018-10-24 | 2019-03-15 | 中建西部建设西南有限公司 | A kind of high-strength concrete viscosity reduction type polycarboxylate water-reducer and preparation method thereof |
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| CN112724414A (en) * | 2021-01-21 | 2021-04-30 | 江苏奥莱特新材料股份有限公司 | Polycarboxylate superplasticizer with polyphosphonate side chains and preparation method thereof |
| CN112724414B (en) * | 2021-01-21 | 2022-06-14 | 江苏奥莱特新材料股份有限公司 | Polycarboxylate superplasticizer with polyphosphonate side chains and preparation method thereof |
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