CN105778012A - Method for preparing anti-mud polycarboxylic acid water reducing agents - Google Patents
Method for preparing anti-mud polycarboxylic acid water reducing agents Download PDFInfo
- Publication number
- CN105778012A CN105778012A CN201610162803.6A CN201610162803A CN105778012A CN 105778012 A CN105778012 A CN 105778012A CN 201610162803 A CN201610162803 A CN 201610162803A CN 105778012 A CN105778012 A CN 105778012A
- Authority
- CN
- China
- Prior art keywords
- solution
- water
- preparation
- drop
- stirring
- 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.)
- Pending
Links
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
- C04B24/243—Phosphorus-containing polymers
- C04B24/246—Phosphorus-containing polymers containing polyether side chains
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/40—Introducing phosphorus atoms or phosphorus-containing 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
Abstract
The invention discloses a method for preparing anti-mud polycarboxylic acid water reducing agents. The method includes steps of stirring polymeric monomers A and water at the temperature of 15-30 DEG C until the polymeric monomers A are completely dissolved to obtain first solution, adding polymeric monomers B into the first solution, stirring the polymeric monomers B until the polymeric monomers B are completely dissolved to obtain second solution, continuously stirring the second solution for 5-10 min, then adding, by weight, 30% of hydrogen peroxide into the second solution and stirring the hydrogen peroxide for 5-10 min to obtain third solution; adding acrylic acid aqueous solution into the third solution drop by drop under a stirring condition, and starting to add ascorbic acid and mercaptopropionic acid aqueous solution into the third solution drop by drop after the acrylic acid aqueous solution is added into the third solution drop by drop for 10-15 min; continuously stirring the third solution under the condition of the temperature of 15-30 DEG C for 60-80 min after the ascorbic acid and mercaptopropionic acid aqueous solution is completely added into the third solution drop by drop, carrying out reaction, and then adding sodium hydroxide solution into reaction products to regulate PH (potential of hydrogen) values of the reaction products until the PH values reach 7-8. The polymeric monomers A are polyoxyethylene ether or polyoxyethylene-polyoxypropylene substances; the polymeric monomers B comprise acryloyl oxide amide or methacrylate or amino trimethylene phosphonic acid. The method has the advantages that the reaction temperatures can be lowered, and the reaction time can be shortened.
Description
Technical field
The preparation method that the present invention relates to a kind of anti-chamotte mould polycarboxylate water-reducer, belongs to technical field of concrete additives.
Background technology
Earth in concrete is mainly brought into by aggregate, earth contained in aggregate is mainly clay mineral, because section, geomorphic unit and the different minerals composition in epoch, the origin cause of formation have bigger difference, but after entering concrete production with aggregate, all can cause that fresh concrete slump retaining is poor, serious isolation and excreting water phenomenon occur, increases concrete construction difficulty, also late strength of concrete and durability etc. can be adversely affected.Due to China's natural sand resource scarcity, the sand of a large amount of high clay contents is used directly in concrete production, is used by a large amount of industrial and civil architectures.
Japan early finds that between clay layer, structure can adsorb polycarboxylate water-reducer molecule in a large number.Report according to studies in China personnel, during cement content height, water reducer shows water-reducing rate to be reduced, and slump-loss is big, reduces the phenomenons such as concrete strength.When mud replaces cement amount 15%, cement is lost dispersibility by polycarboxylate water-reducer completely；If under alkaline environment, mud to the adsorption rate of polycarboxylic acids molecule is fast and adsorbance is cement amount 4 times.Earth content has had a strong impact on the performance of polycarboxylate water-reducer performance, and concrete strength, durability after causing fresh concrete workability to be deteriorated and hardening decline.
People reduce the way of the adverse effect that mud in concrete brings mainly super blending two kinds of methods of composite polycarboxylate water-reducer.Super mixing can cause that concrete initially seriously isolates and air content is high, has a strong impact on late strength of concrete；Method of double crossing brings production technology trouble and there is presently no to find and desirably press down mud agent and compounded formula, and both of which brings the increase of unit Cost of Concrete.Therefore develop and a kind of industrial and civil architecture can be had very important significance by the polycarboxylate water-reducer that mud contained by aggregate is inhibited.
Summary of the invention
The preparation method that the technical problem to be solved is to provide a kind of anti-chamotte mould polycarboxylate water-reducer, this preparation method has synthesized a kind of super collateralization polycarboxylic acids macromole with large space steric effect, realize the resistant function to clay mineral, thus reducing the polycarboxylate water-reducer sensitivity to aggregate clay content, play the water-reducing effect of polycarboxylate water-reducer, improve concrete workability and durability.
For solving above-mentioned technical problem, the concrete scheme of the present invention is as follows:
After the anti-mud difference of polycarboxylate water-reducer is adsorbed by earth mainly due to polycarboxylic acids molecule, molecule intercalation has entered the earth interlayer of class montmorillonite, the reduction of polycarboxylic acids molecule space steric hindrance result in its attenuating to cement dispersion effect, show as water reducer water-reducing rate to lower, polyethylene oxide side chains in polycarboxylic acids main chain is prepared into dissaving structure, introduce non-hydrophilic group, make it have bigger sterically hindered effect, the earth adsorption to polycarboxylic acids molecule can be resisted.The present invention, mainly by introducing non-hydrophilic group, increases polycarboxylic acids molecule steric effect, the preparation method that design has synthesized the anti-chamotte mould polycarboxylate water-reducer of a kind of quickly synthesis in low temperature.
The preparation method of a kind of anti-chamotte mould polycarboxylate water-reducer, it is characterised in that this preparation method comprises the following steps:
1) polymerization single polymerization monomer A and water being stirred to being completely dissolved at 15 DEG C～30 DEG C, be subsequently adding polymerization single polymerization monomer B and stir to being completely dissolved, adding mass fraction after continuing stirring 5～10min is the hydrogen peroxide of 30%, stirring 5～10min guarantee hydrogen peroxide mix homogeneously；
2) acrylic acid is dissolved in water and is configured to solution C；
3) ascorbic acid, mercaptopropionic acid are dissolved in the water and are configured to solution D；
4) under agitation first drip solution C, start to drip solution D after dropping solution C 10～15min；
5) continuing stirring 60～80min after dripping solution D under 15 DEG C～30 DEG C conditions, adding sodium hydroxide solution adjustment pH value after having reacted is 7～8；
The molecular weight of described polymerization single polymerization monomer A is 2000～3000, and hydroxyl value is 35～50mgKOH/g, unsaturated double-bond value 0.50mmol/g；Described polymerization single polymerization monomer A is selected from one or both in isopentenol polyoxyethylene ether, isobutene alcohol polyoxyethylene ether, isomery alcohol polyoxyethylene poly-oxygen propylene aether, bisphenol-A polyoxyethylene poly-oxygen propylene aether, alkylphenol-polyethenoxy polyethenoxy ether；
Described polymerization single polymerization monomer B is one or both in MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylyl oxy-ethyl-trimethyl salmiac, dimethylaminoethyl methacrylate, dimethylaminoethyl methacrylate bromic ether, ATMP.
Described polymerization single polymerization monomer A is isomery alcohol polyoxyethylene poly-oxygen propylene aether.
Described polymerization single polymerization monomer B is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride.
Polymerization single polymerization monomer A described in step 1), polymerization single polymerization monomer B, 30% hydrogen peroxide, water mass ratio be: 45～75:15～30:0.6～0.9:80～120.
Step 2) described in acrylic acid amount be the 12%～18% of polymerization single polymerization monomer A and polymerization single polymerization monomer B gross mass.
The concentration of described solution C is 50%～60%；The mass percent of described sodium hydroxide solution is 26%.
Ascorbic acid addition described in step 3) is the 0.4%～0.8% of acrylic acid quality, and mercaptopropionic acid addition is the 2.2%～3.2% of acrylic acid quality, and needed for dissolving ascorbic acid and mercaptopropionic acid, water quality is 50～80 times of ascorbic acid and mercaptopropionic acid gross mass.
The dropping duration of solution C described in step 4) is 60～90min, and the dropping duration of solution D is 75～120min.
In described step 4) and step 5), mixing speed is 60～100rpm.
The TDS value of described water is 200～400mg/L；As the TDS value≤300mg/L of 200mg/L≤water, reaction temperature is 20 DEG C～30 DEG C；As the TDS value≤400mg/L of 300mg/L < water, reaction temperature is 15 DEG C～20 DEG C.
Polyreaction described in step 5) is exothermic reaction, prevents reaction temperature from raising by control solution C and solution D rate of addition and controls the degree of polymerization, it is achieved polyreaction can generate target product according to design in course of reaction.
The present invention compared with prior art has the advantage that
1, the macoradical that can increase polycarboxylic acids molecule steric hindrance is usually introduced, when polyreaction needs more than 60 DEG C, reaction more than 360min just can complete, the present invention prepares anti-chamotte mould polycarboxylate water-reducer polyreaction can at 15 DEG C～30 DEG C, complete in 150min～200min, reduce reaction temperature and shorten the response time.
2, aggregate clay content up to 8% time mix anti-chamotte mould polycarboxylate water-reducer of the present invention can be obviously improved that the concrete slump loss caused because cement content is high is big, workability is poor, the bad phenomenon such as concrete strength and durability reduction.
Detailed description of the invention
Embodiment 1
Equipped with thermometer, electric machine agitator, constant flow pump four mouthfuls of reaction bulbs in put into isopentenol polyoxyethylene ether that 240 grams of mean molecule quantities are 2400 and tap water that 400 grams of TDS values are 289mg/L, controlling mixing speed is 180rpm stirring and dissolving, dissolve after completely and add 120 grams of acrylyl oxy-ethyl-trimethyl salmiacs, observe and after being completely dissolved, be stirred for 5min, it is subsequently adding 30% hydrogen peroxide 3.0 grams, stirring 10min, reaction temperature is 25 DEG C.
Weigh 55 grams of acrylic acid and be dissolved in 45 grams of tap waters, load in 150mL graduated cylinder standby.
Weigh 0.3 gram of ascorbic acid, be dissolved in 100 grams of tap waters, dissolve addition mercaptopropionic acid 1.4 grams after completely and stir, load in graduated cylinder standby.
Regulating reaction bulb mixing speed to 80rpm, drip acrylic acid solution with constant flow pump, control rate of addition is 1.1～1.2mL/min, starts to drip ascorbic acid and mercaptopropionic acid mixed solution again after dropping 10min, and control rate of addition is 1.0～1.2mL/min.Mixed solution at room temperature continues stirring 60min after dripping, add 26% antalkali sodium hydroxide solution after having reacted, and regulating pH value is 7～8, and measuring solid content with hand refractometer is 41%, and sample is labeled as No. 1.
Embodiment 2
Equipped with thermometer, electric machine agitator, constant flow pump four mouthfuls of reaction bulbs in put into isobutene alcohol polyoxyethylene ether that 260 grams of mean molecule quantities are 2400 and tap water that 380 grams of TDS values are 370mg/L, controlling mixing speed is 180rpm stirring and dissolving, dissolve after completely and add 100 grams of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides, observe and be stirred for 5min after completely, it is subsequently adding 30% hydrogen peroxide, 3.5 grams, stirring 10min, reaction temperature is 24 DEG C.
Weigh 60 grams of acrylic acid and be dissolved in 50 grams of tap waters, load in 150mL graduated cylinder standby.
Weigh 0.4 gram of ascorbic acid, be dissolved in 120 grams of tap waters, dissolve addition mercaptopropionic acid 1.8 grams after completely and stir, load in graduated cylinder standby.
Regulating reaction bulb mixing speed to 90rpm, drip acrylic acid solution with constant flow pump, control rate of addition is 1.2～1.3mL/min, starts to drip ascorbic acid and mercaptopropionic acid mixed solution again after dropping 10min, and control rate of addition is 1.1～1.3mL/min.Mixed solution at room temperature continues stirring 80min after dripping, add 26% antalkali sodium hydroxide solution after having reacted, and regulating pH value is 7～8, and measuring solid content with hand refractometer is 41%, and sample is labeled as No. 2.
Embodiment 3
Equipped with thermometer, electric machine agitator, constant flow pump four mouthfuls of reaction bulbs in put into 260 grams of isomery alcohol polyoxyethylene poly-oxygen propylene aethers and 420 grams of TDS values be the tap water of 336mg/L, controlling mixing speed is 180rpm stirring and dissolving, dissolve after completely and add 115 grams of ATMPs, observe and be stirred for 5min after completely, it is subsequently adding 30% hydrogen peroxide 3.5 grams, stirring 10min, reaction temperature is 18 DEG C.
Weigh 55 grams of acrylic acid and be dissolved in 45 grams of tap waters, load in 150mL graduated cylinder standby.
Weigh 0.35 gram of ascorbic acid, be dissolved in 130 grams of tap waters, dissolve addition mercaptopropionic acid 1.5 grams after completely and stir, load in graduated cylinder standby.
Regulating reaction bulb mixing speed to 80rpm, drip acrylic acid solution with constant flow pump, control rate of addition is 1.4～1.5mL/min, starts to drip ascorbic acid and mercaptopropionic acid mixed solution again after dropping 10min, and control rate of addition is 1.4～1.6mL/min.Mixed solution at room temperature continues stirring 60min after dripping, add 26% antalkali sodium hydroxide solution after having reacted, and regulating pH value is 7～8, and measuring solid content with hand refractometer is 40%, and sample is labeled as No. 3.
Embodiment 4
Equipped with thermometer, electric machine agitator, constant flow pump four mouthfuls of reaction bulbs in put into 210 grams of bisphenol-A polyoxyethylene poly-oxygen propylene aethers and 380 grams of TDS values be the tap water of 367mg/L, controlling mixing speed is 180rpm stirring and dissolving, dissolve after completely and add 120 grams of dimethylaminoethyl methacrylate bromic ethers, observe and be stirred for 5min after completely, it is subsequently adding 30% hydrogen peroxide 2.5 grams, stirring 10min, reaction temperature is 18 DEG C.
Weigh 42 grams of acrylic acid and be dissolved in 40 grams of tap waters, load in 150mL graduated cylinder standby.
Weigh 0.25 gram of ascorbic acid, be dissolved in 90 grams of tap waters, dissolve addition mercaptopropionic acid 1.3 grams after completely and stir, load in graduated cylinder standby.
Regulating reaction bulb mixing speed to 100rpm, drip acrylic acid solution with constant flow pump, control rate of addition is 1.0～1.1mL/min, starts to drip ascorbic acid and mercaptopropionic acid mixed solution again after dropping 10min, and control rate of addition is 0.8～1.0mL/min.Mixed solution at room temperature continues stirring 60min after dripping, add 26% antalkali sodium hydroxide solution after having reacted, and regulating pH value is 7～8, and measuring solid content with hand refractometer is 40%, and sample is labeled as No. 4.
Embodiment 5
Equipped with thermometer, electric machine agitator, constant flow pump four mouthfuls of reaction bulbs in put into 240 grams of isomery alcohol polyoxyethylene poly-oxygen propylene aethers and 400 grams of TDS values be the tap water of 266mg/L, controlling mixing speed is 180rpm stirring and dissolving, dissolve after completely and add 120 grams of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides, observe and be stirred for 5min after completely, it is subsequently adding 30% hydrogen peroxide 3.5 grams, stirring 10min, reaction temperature is 25 DEG C.
Weigh 49 grams of acrylic acid and be dissolved in 41 grams of tap waters, load in 150mL graduated cylinder standby.
Weigh 0.3 gram of ascorbic acid, be dissolved in 100 grams of tap waters, dissolve addition mercaptopropionic acid 1.4 grams after completely and stir, load in graduated cylinder standby.
Regulating reaction bulb mixing speed to 70rpm, drip acrylic acid solution with constant flow pump, control rate of addition is 1.0～1.1mL/min, starts to drip ascorbic acid and mercaptopropionic acid mixed solution again after dropping 10min, and control rate of addition is 0.9～1.0mL/min.Mixed solution at room temperature continues stirring 70min after dripping, add 26% antalkali sodium hydroxide solution after having reacted, and regulating pH value is 7～8, and measuring solid content with hand refractometer is 41%, and sample is labeled as No. 5.
Embodiment 6
Equipped with thermometer, electric machine agitator, constant flow pump four mouthfuls of reaction bulbs in put into 230 grams of bisphenol-A polyoxyethylene poly-oxygen propylene aethers and 400 grams of TDS values be the tap water of 271mg/L, controlling mixing speed is 180rpm stirring and dissolving, dissolve after completely and add 140 grams of MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides, observe and be stirred for 5min after completely, it is subsequently adding 30% hydrogen peroxide 3.0 grams, stirring 10min, reaction temperature is 25 DEG C.
Weigh 55 grams of acrylic acid and be dissolved in 40 grams of water, load in 150mL graduated cylinder standby.
Weigh 0.4 gram of ascorbic acid, be dissolved in 110 grams of tap waters, dissolve addition mercaptopropionic acid 1.5 grams after completely and stir, load in graduated cylinder standby.
Regulating reaction bulb mixing speed to 70rpm, drip acrylic acid solution with constant flow pump, control rate of addition is 1.1～1.2mL/min, starts to drip ascorbic acid and mercaptopropionic acid mixed solution again after dropping 10min, and control rate of addition is 1.0～1.2mL/min.Mixed solution at room temperature continues stirring 60min after dripping, add 26% antalkali sodium hydroxide solution after having reacted, and regulating pH value is 7～8, and measuring solid content with hand refractometer is 40%, and sample is labeled as No. 6.
Embodiment 7
For evaluating the anti-mud effect of anti-mud polycarboxylate water-reducer of the present invention, test according to GB GB/T8077-2012 " concrete admixture homogeneity test method ", in aggregate, earth is with montmorillonite for representative, mix method of substitution in employing and replace corresponding cement quality, reference cement 300g, amount of water 87g, water reducer volume is calculated as the 0.20% of cement consumption by the solid amount of folding, adopting clean slurry blender to carry out testing initial paste flowing degree and the paste flowing degree after 1 hour, result of the test is in Table 1.
Table 1. cement content is the flowing degree of net paste of cement test result of 5% and 10%
Embodiment 8
In order to evaluate the anti-chamotte mould polycarboxylate water-reducer of the present invention to the anti-mud effect of mud in concrete, according to the method test concrete slump of regulation in GB GB/T8076-2008 " concrete admixture ", result is in Table 2.
Table 2. concrete slump result of the test
。
Claims (10)
1. the preparation method of an anti-chamotte mould polycarboxylate water-reducer, it is characterised in that this preparation method comprises the following steps:
1) polymerization single polymerization monomer A and water being stirred to being completely dissolved at 15 DEG C～30 DEG C, be subsequently adding polymerization single polymerization monomer B and stir to being completely dissolved, adding mass fraction after continuing stirring 5～10min is the hydrogen peroxide of 30%, stirring 5～10min guarantee hydrogen peroxide mix homogeneously；
2) acrylic acid is dissolved in water and is configured to solution C；
3) ascorbic acid, mercaptopropionic acid are dissolved in the water and are configured to solution D；
4) under agitation first drip solution C, start to drip solution D after dropping solution C 10～15min；
5) continuing stirring 60～80min after dripping solution D under 15 DEG C～30 DEG C conditions, adding sodium hydroxide solution adjustment pH value after having reacted is 7～8；
The molecular weight of described polymerization single polymerization monomer A is 2000～3000, and hydroxyl value is 35～50mgKOH/g, unsaturated double-bond value 0.50mmol/g；Described polymerization single polymerization monomer A is selected from one or both in isopentenol polyoxyethylene ether, isobutene alcohol polyoxyethylene ether, isomery alcohol polyoxyethylene poly-oxygen propylene aether, bisphenol-A polyoxyethylene poly-oxygen propylene aether, alkylphenol-polyethenoxy polyethenoxy ether；
Described polymerization single polymerization monomer B is one or both in MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride, acrylyl oxy-ethyl-trimethyl salmiac, dimethylaminoethyl methacrylate, dimethylaminoethyl methacrylate bromic ether, ATMP.
2. preparation method as claimed in claim 1, it is characterised in that described polymerization single polymerization monomer A is isomery alcohol polyoxyethylene poly-oxygen propylene aether.
3. preparation method as claimed in claim 1, it is characterised in that described polymerization single polymerization monomer B is MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride.
4. preparation method as claimed in claim 1, it is characterised in that polymerization single polymerization monomer A described in step 1), polymerization single polymerization monomer B, 30% hydrogen peroxide, water mass ratio be: 45～75:15～30:0.6～0.9:80～120.
5. preparation method as claimed in claim 1, it is characterised in that step 2) described in acrylic acid amount be the 12%～18% of polymerization single polymerization monomer A and polymerization single polymerization monomer B gross mass.
6. preparation method as claimed in claim 1, it is characterised in that the concentration of described solution C is 50%～60%；The mass percent of described sodium hydroxide solution is 26%.
7. preparation method as claimed in claim 1, it is characterized in that ascorbic acid addition described in step 3) is acrylic acid quality 0.4%～0.8%, mercaptopropionic acid addition is the 2.2%～3.2% of acrylic acid quality, and needed for dissolving ascorbic acid and mercaptopropionic acid, water quality is 50～80 times of ascorbic acid and mercaptopropionic acid gross mass.
8. preparation method as claimed in claim 1, it is characterised in that the dropping duration of solution C described in step 4) is 60～90min, and the dropping duration of solution D is 75～120min.
9. preparation method as claimed in claim 1, it is characterised in that in described step 4) and step 5), mixing speed is 60～100rpm.
10. preparation method as claimed in claim 1, it is characterised in that the TDS value of described water is 200～400mg/L；As the TDS value≤300mg/L of 200mg/L≤water, reaction temperature is 20 DEG C～30 DEG C；As the TDS value≤400mg/L of 300mg/L < water, reaction temperature is 15 DEG C～20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162803.6A CN105778012A (en) | 2016-03-21 | 2016-03-21 | Method for preparing anti-mud polycarboxylic acid water reducing agents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162803.6A CN105778012A (en) | 2016-03-21 | 2016-03-21 | Method for preparing anti-mud polycarboxylic acid water reducing agents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105778012A true CN105778012A (en) | 2016-07-20 |
Family
ID=56393265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610162803.6A Pending CN105778012A (en) | 2016-03-21 | 2016-03-21 | Method for preparing anti-mud polycarboxylic acid water reducing agents |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105778012A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108373303A (en) * | 2018-04-02 | 2018-08-07 | 山东交通学院 | A kind of preparation method of antifouling and antibiosis type concrete |
| CN108997536A (en) * | 2018-06-21 | 2018-12-14 | 天津大学 | A kind of oil-well cement both sexes polycarboxylate dispersant and preparation method and application |
| CN109592924A (en) * | 2018-11-16 | 2019-04-09 | 普沃斯（天津）科技有限公司 | A kind of anti-chamotte mould polycarboxylate water-reducer with cationic side chain |
| CN110455685A (en) * | 2019-06-24 | 2019-11-15 | 中冶建筑研究总院有限公司 | A kind of detection method of anti-mud performance |
| CN111718448A (en) * | 2020-06-29 | 2020-09-29 | 贵州师范学院 | Mud-resistant tannic acid based star polycarboxylate superplasticizer and preparation method thereof |
| CN113754842A (en) * | 2021-10-21 | 2021-12-07 | 上海三瑞高分子材料股份有限公司 | Amphoteric anti-mud polycarboxylate superplasticizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315185A2 (en) * | 1987-11-06 | 1989-05-10 | Mitsubishi Petrochemical Co., Ltd. | Process for preparation of water absorptive composite |
| WO2011031118A2 (en) * | 2009-09-14 | 2011-03-17 | Hanwha Chemical Corporation | A method for preparing water-soluble nanoparticles and their dispersions |
| CN104446101A (en) * | 2014-11-26 | 2015-03-25 | 中建商品混凝土有限公司 | Cation modified polycarboxylate superplasticizer and preparation method thereof |
| CN104558369A (en) * | 2014-12-29 | 2015-04-29 | 陕西长隆科技发展有限公司 | Preparation method of amphoteric clay inhibitor with low relative molecular mass |
| CN104861127A (en) * | 2015-04-10 | 2015-08-26 | 广州市建筑科学研究院有限公司 | Preparation method for anti-mud-type polycarboxylic-acid water-reducing agent and application thereof |
-
2016
- 2016-03-21 CN CN201610162803.6A patent/CN105778012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315185A2 (en) * | 1987-11-06 | 1989-05-10 | Mitsubishi Petrochemical Co., Ltd. | Process for preparation of water absorptive composite |
| WO2011031118A2 (en) * | 2009-09-14 | 2011-03-17 | Hanwha Chemical Corporation | A method for preparing water-soluble nanoparticles and their dispersions |
| CN104446101A (en) * | 2014-11-26 | 2015-03-25 | 中建商品混凝土有限公司 | Cation modified polycarboxylate superplasticizer and preparation method thereof |
| CN104558369A (en) * | 2014-12-29 | 2015-04-29 | 陕西长隆科技发展有限公司 | Preparation method of amphoteric clay inhibitor with low relative molecular mass |
| CN104861127A (en) * | 2015-04-10 | 2015-08-26 | 广州市建筑科学研究院有限公司 | Preparation method for anti-mud-type polycarboxylic-acid water-reducing agent and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王子明: "《聚羧酸系高性能减水剂---制备·性能与应用》", 30 June 2009 * |
| 缪昌文，等: "《高性能混凝土外加剂》", 31 October 2008 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108373303A (en) * | 2018-04-02 | 2018-08-07 | 山东交通学院 | A kind of preparation method of antifouling and antibiosis type concrete |
| CN108997536A (en) * | 2018-06-21 | 2018-12-14 | 天津大学 | A kind of oil-well cement both sexes polycarboxylate dispersant and preparation method and application |
| CN109592924A (en) * | 2018-11-16 | 2019-04-09 | 普沃斯（天津）科技有限公司 | A kind of anti-chamotte mould polycarboxylate water-reducer with cationic side chain |
| CN110455685A (en) * | 2019-06-24 | 2019-11-15 | 中冶建筑研究总院有限公司 | A kind of detection method of anti-mud performance |
| CN110455685B (en) * | 2019-06-24 | 2021-12-31 | 中冶建筑研究总院有限公司 | Method for detecting mud resistance |
| CN111718448A (en) * | 2020-06-29 | 2020-09-29 | 贵州师范学院 | Mud-resistant tannic acid based star polycarboxylate superplasticizer and preparation method thereof |
| CN111718448B (en) * | 2020-06-29 | 2022-12-02 | 贵州师范学院 | Mud-resistant tannic acid based star polycarboxylate superplasticizer and preparation method thereof |
| CN113754842A (en) * | 2021-10-21 | 2021-12-07 | 上海三瑞高分子材料股份有限公司 | Amphoteric anti-mud polycarboxylate superplasticizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105778012A (en) | Method for preparing anti-mud polycarboxylic acid water reducing agents | |
| Akhlaghi et al. | Modified poly (carboxylate ether)-based superplasticizer for enhanced flowability of calcined clay-limestone-gypsum blended Portland cement | |
| CN103896512B (en) | A kind of clay that improves is to screener and the using method thereof of mixing polycarboxylate water-reducer cement concrete system negative effect | |
| CN105110687B (en) | A kind of anti-mud collapse protective poly-carboxylic acid water reducing agent and preparation method thereof | |
| Zheng et al. | A novel branched claw-shape lignin-based polycarboxylate superplasticizer: Preparation, performance and mechanism | |
| CN103102125B (en) | Manufactured sand underwater dispersion resistant concrete and preparation method thereof | |
| CN109880020B (en) | Concrete workability regulator and preparation method thereof | |
| CN109400050A (en) | Ultra-retardation concrete and preparation method thereof | |
| CN105236863B (en) | A kind of intumescent flowing cement base road surface grouting reinforcing material high and preparation method thereof | |
| CN107117856A (en) | Pure pulvis pervious concrete reinforcing agent and its application method with nanometer humidification | |
| CN105949402A (en) | Anti-sulfate competitive adsorption type silane modified polycarboxylate water reducing agent and preparation method thereof | |
| CN113321438B (en) | Slurry-rich concrete additive and preparation method thereof | |
| CN109809739B (en) | Function regulator for concrete composite fine aggregate and preparation method thereof | |
| CN108610455A (en) | A kind of concrete thinner and preparation method thereof | |
| CN110172128A (en) | A kind of efficient viscosity reduction water-reducing agent of brush-type polycarboxylic acids and preparation method thereof | |
| CN107337749A (en) | A kind of high temperature resistant phosphonate group concrete retarder and preparation method thereof | |
| CN109942219B (en) | Concrete glue reducing agent with slump retaining effect | |
| CN110002815A (en) | A kind of rapid hardening water resistant dispersion cement based grouting material and preparation method | |
| CN104876468A (en) | Functionalized polycarboxylic acid water reducer matched with silica fume and preparation method thereof | |
| CN108424030A (en) | A kind of collapse protection type Concrete strength agent and its preparation method and application | |
| CN105601787A (en) | Method for preparing cement dispersant with both high water reduction effect and viscosity reduction effect | |
| CN105800992A (en) | Anti-mud-type polycarboxylic-acid water-reducing agent and preparation method thereof | |
| CN109206093A (en) | A kind of high-flowing concrete mixture and preparation method thereof | |
| CN109437647A (en) | Enhance the high-efficiency water-reducing agent of poly-carboxylic acid and preparation method thereof of adaptability | |
| Lin et al. | Effect of superplasticizers with different anchor groups on the properties of cementitious systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
|
| RJ01 | Rejection of invention patent application after publication |