CN113150219A - High-adaptability mud-resistant water reducing agent and preparation method thereof - Google Patents
High-adaptability mud-resistant water reducing agent and preparation method thereof Download PDFInfo
- Publication number
- CN113150219A CN113150219A CN202110176377.2A CN202110176377A CN113150219A CN 113150219 A CN113150219 A CN 113150219A CN 202110176377 A CN202110176377 A CN 202110176377A CN 113150219 A CN113150219 A CN 113150219A
- Authority
- CN
- China
- Prior art keywords
- parts
- reducing agent
- water reducing
- sodium
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- 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
- C04B24/2641—Polyacrylates; Polymethacrylates
- C04B24/2647—Polyacrylates; Polymethacrylates containing polyether side chains
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2612—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aromatic or arylaliphatic hydroxyl groups
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Polyethers (AREA)
Abstract
The invention provides a high-adaptability mud-resistant water reducing agent and a preparation method thereof. The water reducing agent is mainly prepared from the following materials in 1000 parts by mass: 16.8-17.3 parts of phenol alcohol head, 302.1-310.7 parts of cyclic monomer, 0.4-1.2 parts of catalyst, 32.1-33.0 parts of acid substance, 3.2-7.9 parts of reducing agent, 5.6-8.6 parts of initiator, 5.9-9.4 parts of neutralizing agent, 1.2-4.8 parts of chain transfer agent and the balance of deionized water. According to the invention, the polyether monomer is prepared, the acid-ether ratio of the water reducing agent is designed according to the molecular weight of the prepared polyether, and the polar functional group with strong adsorbability is introduced into the polycarboxylic acid molecule by using the advantage of strong designability of the polycarboxylic acid molecule structure through a free radical polymerization method, so that the excellent adsorption and dispersion properties of the water reducing agent are ensured, and the water reducing agent has a good anti-mud effect.
Description
Technical Field
The invention belongs to the technical field of concrete, relates to the field of concrete additives, and particularly relates to a high-adaptability mud-resistant water reducing agent.
Background
The polycarboxylate superplasticizer is widely applied as a modern high-performance water reducing agent and becomes an indispensable component in concrete, and is widely applied to the preparation of high-performance concrete for highways, railways, bridges and high-rise building engineering due to the advantages of high water reducing rate, good slump retaining property, designable molecular structure and the like. However, the main problems of the polycarboxylic acid water reducing agent are that the homogeneity of large monomers is too serious, and the requirements for serialization and functionalization are relatively outstanding; the cracking problem of concrete caused by the shrinkage of high-performance and high-strength concrete; sensitive to the change of cement, the unevenness of powder materials such as coal ash and the like, poor gradation of sand and stone materials and the like, so that the workability of concrete is poor, and the phenomena of bleeding and bottom grabbing are easy to occur, thereby causing the working performance of the concrete to be reduced. The polycarboxylate superplasticizer has the biggest characteristic that the molecular structure of the polycarboxylate superplasticizer has good designability, and aiming at the problems, the polycarboxylate superplasticizer which is insensitive to materials, good in adaptability, and excellent in mud and slump loss resistance functions is necessary to be developed.
The invention provides a high-adaptability mud-resistant water reducing agent and a preparation method thereof, wherein a polyether macromonomer is prepared by a 2- (allyloxy) phenol alcohol head and is subjected to polymerization reaction with acrylic acid, the acid-ether ratio of the prepared water reducing agent is reasonably designed according to the molecular weight of the prepared polyether, and the adsorption property and the wrapping property of the water reducing agent molecules are improved. And the molecular branched chain of the water reducing agent is a polyether branched chain, wherein the epoxypropane contains more methyl groups, so that the water reducing agent has good dispersing performance and can play a good steric hindrance role. The polyether has larger molecular weight and more branched chains, and can play a good role in resisting mud and dispersing
The patent CN109503772A discloses a mud-resistant polycarboxylate superplasticizer and a preparation method thereof, and the invention discloses a mud-resistant polycarboxylate superplasticizer and a preparation method thereof, wherein the mud-resistant polycarboxylate superplasticizer is prepared from unsaturated polyether, an initiator, a liquid A, a liquid B, a liquid C, a liquid D, Na0H and water. The preparation method of the anti-mud polycarboxylic acid water reducing agent utilizes the advantage of high freedom degree of a polycarboxylic acid molecular structure, and introduces anti-mud functional groups on the polycarboxylic acid molecular structure by a quaternary copolymerization method of liquid A, liquid B, liquid C and liquid D. The mud-resistant polycarboxylate superplasticizer prepared by the method has the advantages of obvious effect, high water reducing rate, low parameter and good slump retaining performance aiming at the land materials with high mud content in China. Can make up for the defect of poor adaptability of the conventional polycarboxylic acid water reducing agent in the current market when meeting ground materials with large mud content. .
Patent CN108503256A discloses an adaptive comprehensive polycarboxylic acid water reducing agent. The invention provides an adaptive comprehensive polycarboxylate water reducer which comprises 15-30 parts of a mud-resistant polycarboxylate water reducer, 8-30 parts of a slump-retaining polycarboxylate water reducer, 10-34 parts of a water-reducing polycarboxylate water reducer, 7-28 parts of a polycarboxylate solution, 5-16 parts of lignosulfonate and 10-40 parts of water. The adaptive comprehensive polycarboxylate superplasticizer disclosed by the invention has higher water reducing rate and slump loss resistance, meets the construction requirements of most of concrete, avoids adding a water reducing auxiliary agent additionally and reduces the production cost.
The invention discloses a low-shrinkage high-adaptability mud and slump resistant polycarboxylate water reducer and a low-temperature preparation method thereof, and discloses a low-shrinkage high-adaptability mud and slump resistant polycarboxylate water reducer and a low-temperature preparation method thereof, wherein the low-shrinkage high-adaptability mud and slump resistant polycarboxylate water reducer is mainly prepared by polymerizing 4-hydroxybutyl vinyl polyoxyethylene ether, unsaturated carboxylic acid, unsaturated amide monomers, unsaturated carboxylic ester, maleic acid diethylene glycol monomethyl ether ester, unsaturated quaternary ammonium salt cationic monomers, an oxidant, a catalyst, a reducing agent, a chain transfer agent and deionized water at 5-15 ℃ through aqueous solution free radicals, adding sodium hydroxide solution to adjust the pH value, and supplementing water. The preparation method is produced at low temperature, a heat source is not needed, the equipment is simple, no pollution is caused, the reaction time is short, the production efficiency is high, and the prepared mud-resistant slump-retaining type polycarboxylate superplasticizer has the advantages of good concrete workability, good adaptability, low shrinkage, high strength, excellent mud-resistant slump-retaining performance and great reduction of construction difficulty.
Different from the patents, the polyether macromonomer prepared by the method disclosed by the invention is subjected to polymerization reaction with acrylic acid by using the 2- (allyloxy) phenol alcohol head, and the rigid phenol alcohol head is positioned close to the main chain of the water reducing agent, so that the winding of the main chain of the water reducing agent molecule is limited, and the utilization rate and the water reducing rate of the water reducing agent molecule are improved. In addition, the polyether monomer with a proper acid-ether ratio and a large molecular weight is designed, a reasonable water reducer molecular space configuration is constructed, the steric hindrance dispersion effect and the adsorption and wrapping capacity of water reducer molecules are improved, and the water reducer has good mud resistance.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a high-adaptability mud-resistant water reducing agent and a preparation method thereof.
The invention uses ethylene oxide and propylene oxide to carry out polymerization reaction with 2- (allyloxy) phenol alcohol head to prepare polyether monomer with molecular weight of 3000 required by water reducing agent molecule. And then carrying out polymerization reaction on unsaturated bonds contained in the alcohol head and unsaturated carboxylic acid to prepare the water reducing agent. The water reducing agent synthesized by using 2- (allyloxy) phenol has certain rigidity, the possibility of winding of water reducing agent molecules can be reduced, the benzene ring has certain hydrophobic property, the surface tension of cement paste is reduced, the fluidity of cement paste is improved, and the branch chain of the water reducing agent molecule is a polyether branch chain, so that the water reducing agent has good flexibility and dispersibility, and the prepared water reducing agent has excellent adsorption and dispersion properties.
The technical scheme provided by the invention is as follows:
one of the purposes of the invention is to provide a preparation method of a high-adaptability mud-resistant water reducing agent, wherein the preparation method comprises the following steps of:
(1) preparation of polyether monomer
Adding 16.8-17.3 parts of phenol alcohol head and 0.4-1.2 parts of catalyst into a high-pressure reaction kettle, performing nitrogen replacement for 4 times, vacuumizing to gauge pressure of-0.09 MPa, heating to 120-plus-130 ℃, measuring the oxygen content, after the oxygen content is qualified (the oxygen content is not more than 5ppm), cooling to 115 ℃, continuously introducing 302.5-310.8 parts of cyclic monomer at constant speed, controlling the pressure to be less than 0.45MPa, after the cyclic monomer is completely introduced, performing heat preservation at 125 ℃ for 1.5-2.5 hours to perform reaction to negative pressure, cooling and discharging to obtain a polyether monomer;
(2) preparation of Water reducing agent
Adding the prepared finished polyether into a reaction kettle, heating to 55-65 ℃ by adopting water bath, and then preserving heat; preparing 5.6-8.6 parts of initiator, 1.2-4.8 parts of chain transfer agent and water into solution A; preparing solution B from 32.05-32.97 parts of acid substance, 3.2-7.9 parts of reducing agent, 0.5-1.0 part of phenol alcohol head and water; wherein, the liquid A is dripped for 2 to 2.5 hours, the liquid B is dripped for 1.5 to 2 hours, the temperature is kept for 1 to 2 hours after the liquid A is dripped, 5.9 to 9.4 parts of neutralizer is added at one time, and water is supplemented until the total mass is 1000, thus obtaining the water reducing agent solution.
Further, the phenol alcohol head is 2- (allyloxy) phenol.
Further, in the step (1), the catalyst is one or more of anhydrous aluminum chloride, boron trifluoride, concentrated sulfuric acid, hydrogen halide, aryl sulfonic acid, inorganic phosphorus compounds, carboxylic acid, organic cation exchange resin, aluminum phenolate, sodium hydroxide, potassium hydroxide, sodium cyanide, lithium aluminum hydride, boron trifluoride vinyl ether and DMC. Preferably a combination of boron trifluoride and lithium aluminium hydride in a mass ratio of 1: 2.3.
Further, in the step (1), the mass ratio of the cyclic monomer is 1: 3 of ethylene oxide and propylene oxide.
Further, in the step (2), the initiator is one or more of ammonium persulfate, azobisisobutyronitrile, diisopropyl peroxydicarbonate, Benzoyl Peroxide (BPO), di-tert-butyl peroxide (DTBP) and dicyclohexyl peroxydicarbonate, and preferably a composition of ammonium persulfate and azobisisobutyronitrile in a mass ratio of 2: 1;
the chain transfer agent is one or more of thioglycolic acid, mercaptopropionic acid, mercaptoethanol and mercaptopropanol. Preferably, the mass ratio is 2: 1.3 composition of thioglycolic acid and mercaptoethanol.
Further, in the step (2), the acid substance is acrylic acid.
Further, the reducing agent in the step (2) is one or more of sodium hydrosulfite, ascorbic acid, sodium formaldehyde sulfoxylate, maltodextrin, sodium bisulfite, sodium metabisulfite and sodium hypophosphite. The preferred reducing agent is a combination of sodium formaldehyde sulfoxylate and maltodextrin in a mass ratio of 1:2.
Further, the neutralizing agent in the step (2) is one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate, sodium methoxide, sodium ethoxide, ethanolamine, diethanolamine, triethanolamine and triisopropanolamine. A composition of sodium bicarbonate and triisopropanolamine in a mass ratio of 1:1 is preferred.
Further, the molar ratio of the acid substance to the polyether in the step (2) is 3.8-4.2: 1. Preferably, the molar ratio of the acid to the polyether is 4.2: 1.
the invention also aims to provide the high-adaptability mud-resistant water reducing agent prepared by the method.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. according to the invention, polyether is used as a monomer for synthesizing the water reducing agent, and the polyether can increase the flexibility of the branched chain of the water reducing agent, enhance the coating property of water reducing agent molecules on particles and improve the effective action part of the water reducing agent. In addition, the acid-ether ratio of 4.2:1 is adopted, the density of carboxyl and side chains is reasonably controlled, the steric hindrance and the electrostatic repulsion are improved, the adsorption capacity between the water reducing agent molecules and cement particles is considered, and the prepared water reducing agent molecules have excellent water reducing rate and good mud dispersing resistance.
2. The invention uses 2- (allyloxy) phenol as the alcohol head of the synthetic polyether, the length of the benzene ring is smaller than that of the branched chain and is near the main chain of the water reducing agent, the rigidity of the water reducing agent molecules is properly increased, the possibility of winding of the water reducing agent molecules is reduced, and the durability of the dispersing action of the water reducing agent is ensured.
3. The 3000 molecular weight long-chain branch prepared by the method plays a good steric hindrance role, and the high-dispersity water reducing agent molecules improve the dispersion uniformity of cement particles in cement paste, so that hydration products have a reasonable spatial structure.
4. The invention designs 4.2: the acid-ether ratio of 1, the amount of ethylene oxide and propylene oxide are reasonably designed, the excellent adsorption performance is ensured, and the methyl provided by the propylene oxide provides a certain dispersion performance, so that the dispersion effect of the water reducing agent is greatly improved.
Drawings
FIG. 1 is an SEM image of a TC-900J water reducer;
FIG. 2 is an SEM image of a 3d concrete sample of example 2.
Detailed Description
The technical solutions and advantages of the present invention are further described in detail with reference to the following specific examples, but it should be understood that the following examples should not be construed as limiting the scope of the claims of the present application in any way.
Example 1
The preparation method of the high-adaptability mud-resistant water reducing agent is formed by polymerizing the following components, wherein the total mass of the raw materials is 1000 parts, and the raw materials comprise the following components:
16.8 parts of 2- (allyloxy) phenol
61.0 parts of ethylene oxide
242.1 parts of propylene oxide
0.8 part of boron trifluoride and lithium aluminum hydride in a mass ratio of 1:2.3
Acrylic acid 33.0 parts
Ascorbic acid and 5.6 parts of sodium formaldehyde sulfoxylate with the mass ratio of 1:1.2
The mass ratio is 2: ammonium persulfate 1 and azobisisobutyronitrile 6.7 parts
The mass ratio is 2: 1.3 parts of mercaptoacetic acid and mercaptoethanol 3.2 parts
7.3 parts of sodium bicarbonate and triisopropanolamine in a mass ratio of 1.3:1
The balance of water, the total mass is 1000 parts.
The preparation method comprises the following steps:
(1) adding 16.80 parts of phenolic alcohol head and 0.8 part of boron trifluoride and lithium aluminum hydride in a mass ratio of 1:2.3 into a 5L high-pressure reaction kettle provided with a stirrer and a thermometer, performing nitrogen replacement for 3 times, vacuumizing to gauge pressure of-0.09 MPa, heating to 125 ℃, dehydrating for 1h, measuring the oxygen content, cooling to 115 ℃ after the oxygen content is qualified (the oxygen content is not more than 5ppm), continuously introducing 61.0 parts of ethylene oxide and 242.1 parts of propylene oxide, controlling the pressure to be less than 0.4MPa, keeping the temperature at 120 ℃ for 1.8h after the oxygen content is qualified, aging to negative pressure, cooling and discharging to obtain the crude polyether.
(2) Adding the prepared finished polyether into a reaction kettle, heating to 45 ℃ by adopting water bath, and then preserving heat for 0.5 hour. Mixing 6.7 parts by mass of a mixture of 2:1, ammonium persulfate and azobisisobutyronitrile, wherein the mass ratio of 3.2 parts is 2: 1.3, preparing a solution A from thioglycolic acid, mercaptoethanol and water, preparing a solution B from 5.6 parts of ascorbic acid, sodium formaldehyde sulfoxylate, 33.0 parts of acrylic acid and 0.7 part of phenol alcohol head in a mass ratio of 1:1.2, and dropwise adding A, B into a reaction kettle by using a dropwise adding pump, wherein the solution A is dropwise added for 2 hours, and the solution B is dropwise added for 1.5 hours. Preparing a polyether dispersant, adding 7.3 parts of sodium bicarbonate and triisopropanolamine in a mass ratio of 1.3:1 into the prepared water reducer, and supplementing water until the total mass is 1000 to obtain the required polyether water reducer solution.
The raw materials except water are added at one time, so the method does not need to write parts by weight.
Examples 2 to 6
The specific raw materials and the specific parameters (the steps are the same) in the preparation method are different from those in example 1, and are specifically shown in the following tables 1 and 2 (table 1 is the raw materials, table 2 is the parameters in the preparation method), and the representations not shown in table 2 are the same as those in example 1:
the parts are parts by mass.
TABLE 1
TABLE 2
The product of the invention and a Hubei Tengthen TC-900J water reducing agent are prepared into a C50 concrete sample, and the samples are detected to obtain tables 3 and 4.
TABLE 3
TABLE 4
As can be seen from Table 4, the highly adaptable anti-mud water reducing agent solution synthesized by the method of the invention shows better slump, water reducing rate and bleeding rate in a concrete system.
FIGS. 1 and 2 are SEM images of the TC-900J water reducer and the 3d concrete sample of example 2, respectively. As can be seen from the figure, after the cement hydrate is doped in the embodiment 2 of the invention, the appearance of the cement hydrate is obviously denser, the occurrence of microcracks is reduced, and the propagation of the microcracks is hindered. Greatly improves the mud resistance of the concrete.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. A preparation method of a high-adaptability mud-resistant water reducing agent, which is characterized in that,
the parts are parts by mass, and the method comprises the following steps:
(1) preparation of polyether monomer
Adding 16.8-17.3 parts of phenol alcohol head and 0.4-1.2 parts of catalyst into a high-pressure reaction kettle, performing nitrogen replacement for several times, vacuumizing to gauge pressure of-0.09 MPa, heating to 120-;
(2) preparation of Water reducing agent
Adding the prepared finished polyether into a reaction kettle, heating to 55-65 ℃ by adopting water bath, and then preserving heat; preparing 5.6-8.6 parts of initiator, 1.2-4.8 parts of chain transfer agent and water into solution A; preparing solution B from 32.05-32.97 parts of acid substance, 3.2-7.9 parts of reducing agent, 0.5-1.0 part of phenol alcohol head and water; wherein, the liquid A is dripped for 2 to 2.5 hours, the liquid B is dripped for 1.5 to 2 hours, the temperature is kept for 1 to 2 hours after the liquid A is dripped, 5.9 to 9.4 parts of neutralizer is added at one time, and water is supplemented until the total mass is 1000, thus obtaining the water reducing agent solution.
2. The method of claim 1, wherein the phenolic alcohol head is 2- (allyloxy) phenol.
3. The method according to claim 1, wherein the catalyst in step (1) is one or more of anhydrous aluminum chloride, boron trifluoride, concentrated sulfuric acid, hydrogen halide, aryl sulfonic acid, inorganic phosphorus compound, carboxylic acid, organic cation exchange resin, aluminum phenoxide, sodium hydroxide, potassium hydroxide, sodium cyanide, lithium aluminum hydride, boron trifluoride vinyl ether and DMC.
4. The method according to claim 1, wherein the cyclic monomer is present in the step (1) in a mass ratio of 1: 3 of ethylene oxide and propylene oxide.
5. The method according to claim 1, wherein the initiator in the step (2) is one or more of ammonium persulfate, azobisisobutyronitrile, diisopropyl peroxydicarbonate, Benzoyl Peroxide (BPO), di-tert-butyl peroxide (DTBP) and dicyclohexyl peroxydicarbonate; the chain transfer agent is one or more of thioglycolic acid, mercaptopropionic acid, mercaptoethanol and mercaptopropanol.
6. The method according to claim 1, wherein the acid in step (2) is acrylic acid.
7. The method according to claim 1, wherein the reducing agent in step (2) is one or more of sodium hydrosulfite, ascorbic acid, sodium formaldehyde sulfoxylate, maltodextrin, sodium hydrosulfite, sodium metabisulfite and sodium hypophosphite.
8. The method according to claim 1, wherein the neutralizing agent in step (2) is one or more of sodium hydroxide, potassium hydroxide, sodium carbonate, sodium bicarbonate, potassium carbonate, sodium methoxide, sodium ethoxide, ethanolamine, diethanolamine, triethanolamine and triisopropanolamine.
9. The method of claim 1, wherein the molar ratio of the acid to the polyether in step (2) is 3.8-4.2: 1.
10. The high-adaptability mud-resistant water reducing agent is characterized in that: prepared by the process of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176377.2A CN113150219B (en) | 2021-02-09 | 2021-02-09 | High-adaptability mud-resistant water reducing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176377.2A CN113150219B (en) | 2021-02-09 | 2021-02-09 | High-adaptability mud-resistant water reducing agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113150219A true CN113150219A (en) | 2021-07-23 |
| CN113150219B CN113150219B (en) | 2022-10-04 |
Family
ID=76882967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110176377.2A Active CN113150219B (en) | 2021-02-09 | 2021-02-09 | High-adaptability mud-resistant water reducing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113150219B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929836A (en) * | 2021-11-01 | 2022-01-14 | 湖北凌安科技有限公司 | High-dispersion viscosity-reduction water reducer and preparation method thereof |
| CN113980203A (en) * | 2021-11-22 | 2022-01-28 | 山东交通学院 | Polycarboxylate superplasticizer with controllable structure based on EPEG polyether macromonomer and preparation method thereof |
| CN113999384A (en) * | 2021-11-01 | 2022-02-01 | 湖北凌安科技有限公司 | Functional composite polyether and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1160529A (en) * | 1997-06-12 | 1999-03-02 | Daiso Co Ltd | Production of ether |
| JPH1160652A (en) * | 1997-08-14 | 1999-03-02 | Nippon Shokubai Co Ltd | Hydrophilic graft polymer, its preparation and use thereof |
| CN102952241A (en) * | 2012-08-21 | 2013-03-06 | 武汉格瑞林建材科技股份有限公司 | Preparation method of phenolic ether polycarboxylate concrete slushing agent |
| CN109111551A (en) * | 2018-07-09 | 2019-01-01 | 湖北工业大学 | A kind of anti-chamotte mould polycarboxylate water-reducer preparation method of 3000 molecular weight polyethers |
-
2021
- 2021-02-09 CN CN202110176377.2A patent/CN113150219B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1160529A (en) * | 1997-06-12 | 1999-03-02 | Daiso Co Ltd | Production of ether |
| JPH1160652A (en) * | 1997-08-14 | 1999-03-02 | Nippon Shokubai Co Ltd | Hydrophilic graft polymer, its preparation and use thereof |
| CN102952241A (en) * | 2012-08-21 | 2013-03-06 | 武汉格瑞林建材科技股份有限公司 | Preparation method of phenolic ether polycarboxylate concrete slushing agent |
| CN109111551A (en) * | 2018-07-09 | 2019-01-01 | 湖北工业大学 | A kind of anti-chamotte mould polycarboxylate water-reducer preparation method of 3000 molecular weight polyethers |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929836A (en) * | 2021-11-01 | 2022-01-14 | 湖北凌安科技有限公司 | High-dispersion viscosity-reduction water reducer and preparation method thereof |
| CN113999384A (en) * | 2021-11-01 | 2022-02-01 | 湖北凌安科技有限公司 | Functional composite polyether and preparation method and application thereof |
| CN113929836B (en) * | 2021-11-01 | 2024-03-26 | 湖北凌安科技有限公司 | High-dispersion viscosity-reducing water reducer and preparation method thereof |
| CN113980203A (en) * | 2021-11-22 | 2022-01-28 | 山东交通学院 | Polycarboxylate superplasticizer with controllable structure based on EPEG polyether macromonomer and preparation method thereof |
| CN113980203B (en) * | 2021-11-22 | 2023-05-09 | 山东交通学院 | Polycarboxylate superplasticizer with controllable structure based on EPEG polyether macromonomer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113150219B (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113150219B (en) | High-adaptability mud-resistant water reducing agent and preparation method thereof | |
| CN110642993B (en) | Preparation method of retarding ether polycarboxylate superplasticizer | |
| WO2021217762A1 (en) | Unsaturated polyether monomer, and polycarboxylate superplasticizer and preparation method therefor | |
| CN109627397B (en) | Polycarboxylate superplasticizer for improving rheological property of cement paste and preparation method thereof | |
| WO2014085996A1 (en) | Slump retaining polycarboxylic acid superplasticizer | |
| CN108948288B (en) | Preparation method of crosslinking type polycarboxylate superplasticizer by adopting carboxyl functional monomer | |
| CN105924592B (en) | Viscosity-reducing polycarboxylic acid water reducer and preparation method thereof | |
| CN111100253A (en) | Concrete anti-sensitive polycarboxylate superplasticizer and preparation method thereof | |
| CN113754842A (en) | Amphoteric anti-mud polycarboxylate superplasticizer | |
| CN104945576A (en) | Preparation method, products and application of high efficiency slushing agent | |
| CN112724332A (en) | Polymer for high-impermeability concrete and preparation method thereof | |
| CN108047390B (en) | Preparation method of anti-mud-reduction type polycarboxylate superplasticizer | |
| CN112960931A (en) | Water reducing agent for low-hydration-heat-retardation large-volume concrete and preparation method thereof | |
| CN112940199B (en) | Water-retaining internal curing anti-cracking concrete water reducer and preparation method thereof | |
| CN109734847B (en) | Viscosity reduction type polycarboxylate superplasticizer containing three viscosity reduction functional groups, and preparation method and application thereof | |
| CN108084358B (en) | Preparation method of collapse-proof polycarboxylate superplasticizer | |
| CN112940197B (en) | Viscosity-reducing and mud-resisting polymer for concrete and preparation method thereof | |
| CN112898502A (en) | Anti-seepage slump retaining agent and preparation method thereof | |
| CN112794688B (en) | Early-strength low-shrinkage concrete for prefabricated parts and preparation process thereof | |
| CN111072867A (en) | Solid polycarboxylic acid water reducing agent and preparation method thereof | |
| CN112794959A (en) | Polymer for stabilizing pumped concrete and preparation method thereof | |
| CN112876168A (en) | Thin-wall high-pier concrete and preparation method thereof | |
| CN112920339B (en) | Low-molecular-weight polymer for mud-resistant concrete and preparation method thereof | |
| CN112898505B (en) | Internal crosslinking water reducing agent and preparation method thereof | |
| CN109956697B (en) | Multi-adsorption-group intermediate, preparation method and application of polymer thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |