CN109265621A - A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent and preparation method thereof - Google Patents
A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent and preparation method thereof Download PDFInfo
- Publication number
- CN109265621A CN109265621A CN201810869114.8A CN201810869114A CN109265621A CN 109265621 A CN109265621 A CN 109265621A CN 201810869114 A CN201810869114 A CN 201810869114A CN 109265621 A CN109265621 A CN 109265621A
- Authority
- CN
- China
- Prior art keywords
- parts
- solution
- early strength
- acid
- added
- 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
- 239000002253 acid Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 22
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical group CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 19
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 19
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 10
- JPAOMENBKRZQDR-UHFFFAOYSA-N CC=CC.[Na] Chemical compound CC=CC.[Na] JPAOMENBKRZQDR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 9
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 9
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 9
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 9
- 150000003926 acrylamides Chemical class 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000004448 titration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- KOUKXHPPRFNWPP-UHFFFAOYSA-N pyrazine-2,5-dicarboxylic acid;hydrate Chemical group O.OC(=O)C1=CN=C(C(O)=O)C=N1 KOUKXHPPRFNWPP-UHFFFAOYSA-N 0.000 claims description 5
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 4
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 4
- -1 polyoxy Polymers 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000012986 chain transfer agent Substances 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 25
- 238000010276 construction Methods 0.000 abstract description 6
- 230000001112 coagulating effect Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000007306 turnover Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 9
- 239000003643 water by type Substances 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229920005646 polycarboxylate Polymers 0.000 description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- AOAGVPIEEAAAOL-RXSVEWSESA-N (2r)-2-[(1s)-1,2-dihydroxyethyl]-3,4-dihydroxy-2h-furan-5-one;hydrogen peroxide Chemical compound OO.OC[C@H](O)[C@H]1OC(=O)C(O)=C1O AOAGVPIEEAAAOL-RXSVEWSESA-N 0.000 description 1
- GDSOZVZXVXTJMI-SNAWJCMRSA-N (e)-1-methylbut-1-ene-1,2,4-tricarboxylic acid Chemical compound OC(=O)C(/C)=C(C(O)=O)\CCC(O)=O GDSOZVZXVXTJMI-SNAWJCMRSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008030 superplasticizer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
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
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds 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
- C08F4/00—Polymerisation catalysts
- C08F4/40—Redox systems
-
- 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)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragents, it includes 100 parts of isopentene group polyoxyethylene ether, 8 ~ 13 parts of acrylic acid, 9 ~ 14 parts of acrylic acid hydroxyl ethyl esters, 0.4 ~ 1.2 part of methyl propylene sodium sulfonate, 0.5 ~ 1.5 part of 2- acrylamide-2-methyl propane sulfonic, 1.4 ~ 2.5 parts of acrylamides, 0.5 ~ 1 part of hydrogen peroxide, 0.1 ~ 0.22 part of ascorbic acid, 0.4 ~ 0.7 part of chain-transferring agent and 140 ~ 180 parts of water；It also discloses the preparation method of high-thin arch dam early strength polycarboxylic acid high performance dehydragent.The beneficial effects of the present invention are: can make concrete mix initial stage that there is certain slump holding capacity, protect the concrete coagulating time after the stage that collapses is short, early strength development is fast, will not influence later strength, can be improved template turnover rate, accelerate engineering construction progress, is pollution-free in preparation process.
Description
Technical field
The present invention relates to the field that is synthetically prepared of concrete poly carboxylic acid series water reducer, especially a kind of high-thin arch dam early-strength
High performance water reducing agent of polyocarboxy acid and preparation method thereof.
Background technique
In recent years, with the continuous development of concrete technology and perfect, concrete as common building foundation material it
One, it is widely used in more and more fields, increasingly higher demands also proposed to concrete performance at the same time.
The performances such as workability is excellent, be easy to pumping construction, be high-strength, high-durability and super hardening receive more and more attention.Early strong,
Super high-early concrete has extensive in the construction of the engineerings such as highway, bridge, harbour, pretensioned high-strength concrete pipe pile and maintenance and reinforcement
Market application prospect.
Currently, the method for preparing high-early strength type polycarboxylic acids dehydragent mainly has two kinds of compounding and synthesis.The nothing being used in compounding
Machine salt or organic early strength agent are easy phenomena such as causing layering, flatulence, poor storage stability, and alkali content is excessively high, and to generate Plant ecology anti-
It answers, chloride ion introducing will cause steel bar corrosion, be unfavorable for the durability of concrete.Alcamines early strength agent is although right in organic matter
The later period performance of concrete influences little and does not have chloride ion, but it is expensive, and volume is not easy to control, and volume is few early strong
Effect is unobvious, crosses and mixes, be easy to cause concrete extra retarded set.Polycarboxylate water-reducer is comb shaped structure, by introducing early powerful
Functional group, high-early strength type polycarboxylic acids dehydragent can be made.However many construction works are requiring the concrete to have early epistasis energy
While, there is certain slump holding capacity, also to meet the condition of pumping construction.Rely solely on early-strength polycarboxylic-acid
Water-reducing agent is obviously unable to reach requirement, is mainly solved at this stage by compounding collapse protection type mother liquor or retarder, compounds collapse protection type
Mother liquor additional amount is not easy to control, and concrete is easy isolation, bleeding；It is too long that incorporation retarder will lead to concrete coagulating time, no
Conducive to the raising of early strength.In addition, the guarantor of high-early strength type polycarboxylic acids dehydragent obtained by current synthetic method is collapsed effect compared with
Difference, early strong effect is unobvious, and mostly uses high―temperature nuclei technique greatly, and equipment cost investment is higher.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, and providing one kind can be such that concrete mix initial stage has
Certain slump holding capacity protects after the stage of collapsing that concrete coagulating time is short, early strength development is fast, will not influence the later period
Intensity, the turnover rate that can be improved template accelerate engineering construction progress, the free of contamination poly- carboxylic of high-thin arch dam early-strength in preparation process
Sour high-performance water reducing agent and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions: a kind of high-thin arch dam early-strength poly-carboxylic high-performance diminishing
Agent, it includes 100 parts of isopentene group polyoxyethylene ether, 8~13 parts of acrylic acid, 9~14 parts of acrylic acid hydroxyl ethyl esters, 0.4~1.2 part
Methyl propylene sodium sulfonate, 0.5~1.5 part of 2- acrylamide-2-methyl propane sulfonic, 1.4~2.5 parts of acrylamides, 0.5~1 part
Hydrogen peroxide, 0.1~0.22 part of ascorbic acid, 0.4~0.7 part of chain-transferring agent and 140~180 parts of water.
The isopentene group polyoxyethylene ether molecular weight is 2400.
The hydrogen peroxide solution concentration is 30%.
The chain-transferring agent is thioacetic acid or mercaptopropionic acid.
The preparation method of the high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it the following steps are included:
S1, suitable softened water is added into container, isopentene group polyoxyethylene ether is then slowly added into container, often
Temperature stirring, dissolves isopentene group polyoxyethylene ether sufficiently；
S2, by acrylic acid, hydroxy-ethyl acrylate, methyl propylene sodium sulfonate, 2- acrylamide-2-methylpro panesulfonic acid and third
The addition of acrylamide base is loaded in the vessel I of softened water, is stirred evenly, is obtained solution A；Ascorbic acid and chain-transferring agent are added
It is loaded in the vessel II of softened water, stirs evenly, obtain solution B；
Hydrogen peroxide and stirring at normal temperature are added in S3, the solution into step S1；
S4, into the solution of step S3, while solution A and solution B is added dropwise, controls solution A and solution B is dripped in 3.0h
Finish；
0.5h is kept the temperature after S5, titration, 30% sodium hydroxide solution is then added and adjusts pH value to 6~7, softening is added
It is 40% that water, which is diluted to solid content, to finally obtain high-thin arch dam early strength polycarboxylic acid high performance dehydragent.
The invention has the following advantages that
1, the present invention is based on the designabilities of polycarboxylate water-reducer molecule structure, by free radical polymerization, in the molecule thereof
Long side chain is introduced, and carboxyl grafting, sulfonic group, ester group and amide groups isoreactivity group on main chain, each group synergistic effect makes
Obtain product water-reducing rate with higher, good slump-retaining and higher early strength.
2, the bases such as the long side chain of polyethers in isopentene group polyoxyethylene ether of the invention and carboxyl, sulfonic group in molecule
Group primarily serves the effect of disperse cement particles.
3, hydrolysis, and slow release carboxylic occur under alkaline condition for the ester group in acrylic acid hydroxyl ethyl ester of the invention
Base makes concrete slump loss be effectively controlled within a certain period of time, and concrete has good workability and excellent
The function that the slump is kept.
4, the amide group in acrylamide of the invention can promote the aquation of tricalcium aluminate in cement slurry, accelerate calcium alum
The formation of stone, can effectively shorten concrete coagulating time, to facilitate the development of early strength of concrete.
5, guarantor of the invention high-early strength type polycarboxylic acids dehydragent early strength of collapsing is higher, has good function of slump protection, energy
It enough solves the problem of that the poly- poly carboxylic acid series water reducer of current early-strength is slump-retaining and bad is unable to satisfy long-distance pumping.
6, the guarantor of the invention high-early strength type polycarboxylic acids dehydragent that collapses carries out under hydrogen peroxide-Ascorbic Acid Oxidation reduction system
Polymerization reaction is made, simple production process, and reaction process has energy-saving, environmentally protective, low in cost etc. excellent without heating
Gesture is conducive to be mass produced and apply.
Specific embodiment
The present invention will be further described below, and protection scope of the present invention is not limited to as described below:
A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it include 100 parts of isopentene group polyoxyethylene ether, 8~
13 parts of acrylic acid, 9~14 parts of acrylic acid hydroxyl ethyl esters, 0.4~1.2 part of methyl propylene sodium sulfonate, 0.5~1.5 part of 2- acrylamide-
2- methyl propane sulfonic acid, 1.4~2.5 parts of acrylamides, 0.5~1 part of hydrogen peroxide, 0.1~0.22 part of ascorbic acid, 0.4~0.7 part
Chain-transferring agent and 140~180 parts of water.
The isopentene group polyoxyethylene ether molecular weight is 2400.The hydrogen peroxide solution concentration is 30%.The chain turns
Moving agent is thioacetic acid or mercaptopropionic acid.
The preparation method of the high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it the following steps are included:
S1, suitable softened water is added into container, isopentene group polyoxyethylene ether is then slowly added into container, often
Temperature stirring, dissolves isopentene group polyoxyethylene ether sufficiently；
S2, by acrylic acid, hydroxy-ethyl acrylate, methyl propylene sodium sulfonate, 2- acrylamide-2-methylpro panesulfonic acid and third
The addition of acrylamide base is loaded in the vessel I of softened water, is stirred evenly, is obtained solution A；Ascorbic acid and chain-transferring agent are added
It is loaded in the vessel II of softened water, stirs evenly, obtain solution B；
Hydrogen peroxide and stirring at normal temperature are added in S3, the solution into step S1；
S4, into the solution of step S3, while solution A and solution B is added dropwise, controls solution A and solution B is dripped in 3.0h
Finish；
0.5h is kept the temperature after S5, titration, 30% sodium hydroxide solution is then added and adjusts pH value to 6~7, softening is added
It is 40% that water, which is diluted to solid content, to finally obtain high-thin arch dam early strength polycarboxylic acid high performance dehydragent.
Embodiment one:
The preparation method of high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it the following steps are included:
S1,80 parts of softened waters are added into container, are then slowly added to 100 parts of isopentene group polyoxyethylene ether, room temperature stirs
20-30min is mixed, dissolves isopentene group polyoxyethylene ether sufficiently；
S2, by 10 parts of acrylic acid, 12 parts of hydroxy-ethyl acrylates, 0.8 part of methyl propylene sodium sulfonate, 0.7 part of 2- acrylamide
Base -2- methyl propane sulfonic acid and 2 parts of acrylamidos are added in 35 parts of softened waters, stir evenly, obtain solution A；It is anti-by 0.16 part
Bad hematic acid and 0.5 part of thioacetic acid are added in 45 parts of softened waters, stir evenly, obtain solution B；
0.75 part of hydrogen peroxide, 5~10min of stirring at normal temperature are added in S3, the solution obtained to step S1；
In S4, the solution obtained to step S3, while solution A and solution B is added dropwise, controls solution A and solution B in 3.0h drop
It adds complete；
0.5h is kept the temperature after S5, titration, 30% sodium hydroxide solution is then added and adjusts pH value to 6~7, softening is added
It is 40% that water, which is diluted to solid content, obtains high-thin arch dam early strength polycarboxylic acid high performance dehydragent.
Embodiment two:
The preparation method of high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it the following steps are included:
S1,80 parts of softened waters are added into container, are then slowly added to 100 parts of isopentene group polyoxyethylene ether, room temperature stirs
20~30min is mixed, dissolves isopentene group polyoxyethylene ether sufficiently；
S2, by 12 parts of acrylic acid, 10 parts of hydroxy-ethyl acrylates, 0.7 part of methyl propylene sodium sulfonate, 1.2 parts of 2- acrylamides
Base -2- methyl propane sulfonic acid and 1.5 parts of acrylamidos are added in 35 parts of softened waters, stir evenly, obtain solution A；By 0.14 part
Ascorbic acid and 0.65 part of mercaptopropionic acid are added in 45 parts of softened waters, stir evenly, obtain solution B；
0.85 part of hydrogen peroxide, 5~10min of stirring at normal temperature are added in S3, the solution obtained to step S1；
In S4, the solution obtained to step S3, while solution A and solution B is added dropwise, controls solution A and solution B in 3.0h drop
It adds complete；
0.5h is kept the temperature after S5, titration, 30% sodium hydroxide solution is then added and adjusts pH value to 6~7, softening is added
It is 40% that water, which is diluted to solid content, obtains high-thin arch dam early strength polycarboxylic acid high performance dehydragent.
Embodiment three:
The preparation method of high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it the following steps are included:
S1,80 parts of softened waters are added into container, are then slowly added to 100 parts of isopentene group polyoxyethylene ether, room temperature stirs
20~30min is mixed, dissolves isopentene group polyoxyethylene ether sufficiently；
S2, by 9 parts of acrylic acid, 13 parts of hydroxy-ethyl acrylates, 1.0 parts of methyl propylene sodium sulfonates, 0.6 part of 2- acrylamide
Base -2- methyl propane sulfonic acid and 2.5 parts of acrylamidos are added in 35 parts of softened waters, stir evenly, obtain solution A；By 0.13 part
Ascorbic acid and 0.5 part of thioacetic acid are added in 45 parts of softened waters, stir evenly, obtain solution B；
0.6 part of hydrogen peroxide, 5~10min of stirring at normal temperature are added in S3, the solution obtained to step S1；
In S4, the solution obtained to step S3, while solution A and solution B is added dropwise, controls solution A and solution B in 3.0h drop
It adds complete；
0.5h is kept the temperature after S5, titration, 30% sodium hydroxide solution is then added and adjusts pH value to 6~7, softening is added
It is 40% that water, which is diluted to solid content, obtains high-thin arch dam early strength polycarboxylic acid high performance dehydragent.
By above 3 embodiment products and current polycarboxylate water-reducer PC1 and Early-strength polycarboxylate superplasticizer PC2 into
Row comparison, carries out following tests:
Test 1: cement paste test
Cement paste test is carried out according to GB8077-2012 " Methods for testing uniformity of concrete admixture ", and cement uses
Lafarge P.O42.5, every group of test raw material are cement 500g, water 145g.The experimental results are shown inthe following table:
As can be seen from the above table, the initial water-reducing rate of all samples is essentially identical, and PC1 and PC2 collapse and damage seriously, and of the invention
3 embodiment samples there is good guarantor to collapse effect, flowing degree of net paste of cement can keep nearly 2 hours not lose.
Test 2: concrete crushing strength test
Each age strength test of concrete is executed according to the relevant regulations of GB8076-2008 " concrete admixture ", cement
Using Lafarge P.O42.5, initial slump is controlled in 180 ± 10mm.The experimental results are shown inthe following table:
As can be seen from the above table, 3 embodiment samples compare common polycarboxylic acids diminishing with common early-strength water-reducing agent PC2
Agent PC1, early strength of concrete (1d, 3d) have different degrees of raising, and products of the present invention intensity improves especially
Obviously, all samples later strength is essentially identical.3 embodiment samples and prepared mixed with common early-strength water-reducing agent PC2
Solidifying soil early strength is more much higher than common polycarboxylate water-reducer PC1, does not influence substantially on 28d intensity.The morning of product of the present invention
Epistasis can be much better, in the concrete prefabricated element that can be used for have higher requirements to early epistasis.In addition, this product is with good
Good guarantor is collapsed ability, so that application range is further expanded.
Claims (5)
1. a kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent, it is characterised in that: it includes 100 parts of isopentene group polyoxy second
Alkene ether, 8 ~ 13 parts of acrylic acid, 9 ~ 14 parts of acrylic acid hydroxyl ethyl esters, 0.4 ~ 1.2 part of methyl propylene sodium sulfonate, 0.5 ~ 1.5 part of 2- propylene
Amide -2- methyl propane sulfonic acid, 1.4 ~ 2.5 parts of acrylamides, 0.5 ~ 1 part of hydrogen peroxide, 0.1 ~ 0.22 part of ascorbic acid, 0.4 ~ 0.7
Part chain-transferring agent and 140 ~ 180 parts of water.
2. a kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent according to claim 1, it is characterised in that: described different
Pentenyl polyoxyethylene ether molecular weight is 2400.
3. a kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent according to claim 1, it is characterised in that: described double
Oxygen concentration of aqueous solution is 30%.
4. a kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent according to claim 1, it is characterised in that: the chain
Transfer agent is thioacetic acid or mercaptopropionic acid.
5. the preparation side of high-thin arch dam early strength polycarboxylic acid high performance dehydragent described according to claim 1 ~ any one of 4
Method, it is characterised in that: it the following steps are included:
S1, suitable softened water is added into container, isopentene group polyoxyethylene ether is then slowly added into container, room temperature stirs
It mixes, dissolves isopentene group polyoxyethylene ether sufficiently；
S2, by acrylic acid, hydroxy-ethyl acrylate, methyl propylene sodium sulfonate, 2- acrylamide-2-methylpro panesulfonic acid and acryloyl
Amido addition is loaded in the vessel I of softened water, is stirred evenly, is obtained solution A；Ascorbic acid and chain-transferring agent are added and contained
Have in the vessel II of softened water, stir evenly, obtains solution B；
Hydrogen peroxide and stirring at normal temperature are added in S3, the solution into step S1；
S4, into the solution of step S3, while solution A and solution B is added dropwise, controls solution A and solution B is added dropwise in 3.0h；
0.5h is kept the temperature after S5, titration, 30% sodium hydroxide solution is then added and adjusts pH value to 6 ~ 7, it is dilute that softened water is added
Releasing to solid content is 40%, to finally obtain high-thin arch dam early strength polycarboxylic acid high performance dehydragent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810869114.8A CN109265621A (en) | 2018-08-02 | 2018-08-02 | A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810869114.8A CN109265621A (en) | 2018-08-02 | 2018-08-02 | A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109265621A true CN109265621A (en) | 2019-01-25 |
Family
ID=65148336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810869114.8A Pending CN109265621A (en) | 2018-08-02 | 2018-08-02 | A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109265621A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128601A (en) * | 2019-05-22 | 2019-08-16 | 上饶市天佳新型材料有限公司 | A kind of Early-strength polycarboxylate superplasticizer and preparation method thereof |
| CN111689713A (en) * | 2020-06-22 | 2020-09-22 | 唐山市龙亿科技开发有限公司 | Special additive for concrete of prefabricated part and preparation method thereof |
| CN113265030A (en) * | 2021-05-24 | 2021-08-17 | 杭州树派环保科技有限公司 | Comprehensive polycarboxylic acid water reducing agent and preparation method thereof |
| CN114478945A (en) * | 2022-02-24 | 2022-05-13 | 漯河市昊源新材料有限公司 | Slow-release slump-retaining viscosity-reducing polycarboxylic acid water reducer and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503226A (en) * | 2011-10-19 | 2012-06-20 | 中建商品混凝土有限公司 | High slump retaining type polycarboxylic acid water reducing agent with sustained-release effect and preparation method thereof |
| CN102585242A (en) * | 2012-01-06 | 2012-07-18 | 北京工业大学 | Method for preparing short-chain fatty acid vinyl ester series cement dispersant |
| CN102815882A (en) * | 2012-08-03 | 2012-12-12 | 山西科腾环保科技有限公司 | High-performance water reducer of polycarboxylic acid, and preparation method thereof |
| CN103803846A (en) * | 2014-01-22 | 2014-05-21 | 北京奥润开元环保科技研究院有限公司 | Mud-resistant and salt-resistant polycarboxylate superplasticizer and preparation method thereof |
| CN103965415A (en) * | 2014-04-15 | 2014-08-06 | 中国矿业大学(北京) | Method for preparing polycarboxylic acid grafted copolymer superplasticizer |
| CN104446093A (en) * | 2014-12-04 | 2015-03-25 | 河北铁园科技发展有限公司 | Polycarboxylate-based water reducing agent with integrated functions of water reduction and slump retaining |
| CN104692700A (en) * | 2015-02-11 | 2015-06-10 | 四川恒泽建材有限公司 | Slow-release slump-retaining type polycarboxylic acid high-performance water reducing agent and preparation method thereof |
| CN105271885A (en) * | 2015-09-24 | 2016-01-27 | 四川恒泽建材有限公司 | Mud resistance and slump loss resistance type high-performance polycarboxylic acid water reducer and preparation method thereof |
-
2018
- 2018-08-02 CN CN201810869114.8A patent/CN109265621A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503226A (en) * | 2011-10-19 | 2012-06-20 | 中建商品混凝土有限公司 | High slump retaining type polycarboxylic acid water reducing agent with sustained-release effect and preparation method thereof |
| CN102585242A (en) * | 2012-01-06 | 2012-07-18 | 北京工业大学 | Method for preparing short-chain fatty acid vinyl ester series cement dispersant |
| CN102815882A (en) * | 2012-08-03 | 2012-12-12 | 山西科腾环保科技有限公司 | High-performance water reducer of polycarboxylic acid, and preparation method thereof |
| CN103803846A (en) * | 2014-01-22 | 2014-05-21 | 北京奥润开元环保科技研究院有限公司 | Mud-resistant and salt-resistant polycarboxylate superplasticizer and preparation method thereof |
| CN103965415A (en) * | 2014-04-15 | 2014-08-06 | 中国矿业大学(北京) | Method for preparing polycarboxylic acid grafted copolymer superplasticizer |
| CN104446093A (en) * | 2014-12-04 | 2015-03-25 | 河北铁园科技发展有限公司 | Polycarboxylate-based water reducing agent with integrated functions of water reduction and slump retaining |
| CN104692700A (en) * | 2015-02-11 | 2015-06-10 | 四川恒泽建材有限公司 | Slow-release slump-retaining type polycarboxylic acid high-performance water reducing agent and preparation method thereof |
| CN105271885A (en) * | 2015-09-24 | 2016-01-27 | 四川恒泽建材有限公司 | Mud resistance and slump loss resistance type high-performance polycarboxylic acid water reducer and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128601A (en) * | 2019-05-22 | 2019-08-16 | 上饶市天佳新型材料有限公司 | A kind of Early-strength polycarboxylate superplasticizer and preparation method thereof |
| CN111689713A (en) * | 2020-06-22 | 2020-09-22 | 唐山市龙亿科技开发有限公司 | Special additive for concrete of prefabricated part and preparation method thereof |
| CN113265030A (en) * | 2021-05-24 | 2021-08-17 | 杭州树派环保科技有限公司 | Comprehensive polycarboxylic acid water reducing agent and preparation method thereof |
| CN114478945A (en) * | 2022-02-24 | 2022-05-13 | 漯河市昊源新材料有限公司 | Slow-release slump-retaining viscosity-reducing polycarboxylic acid water reducer and preparation method thereof |
| CN114478945B (en) * | 2022-02-24 | 2023-11-03 | 漯河市昊源新材料有限公司 | Sustained-release slump-retaining viscosity-reducing polycarboxylate-type water reducer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110423315A (en) | A kind of nanometer of C-S-H gel super instant coagulant and preparation method thereof | |
| CN104030595B (en) | Compound concrete admixture with early strength and water reduction functions, and preparation method and application thereof | |
| CN105645810B (en) | A kind of early strength type polycarboxylic acid series high-performance dehydragent and preparation method | |
| CN109265621A (en) | A kind of high-thin arch dam early strength polycarboxylic acid high performance dehydragent and preparation method thereof | |
| CN114195421A (en) | A kind of preparation method of polycarboxylic acid admixture for machine-made sand concrete | |
| CN102532435B (en) | Polycarboxylene high-performance water reducing agent and preparation method thereof | |
| CN109369860B (en) | Slow-release controllable polycarboxylate superplasticizer mother liquor and preparation method thereof | |
| CN108467215A (en) | A kind of nanometer C-S-H crystal seeds early strength agent and preparation method for building concrete | |
| CN103396028A (en) | High-early-strength polycarboxylate water reducer and preparation method thereof | |
| CN107652404B (en) | A kind of room temperature synthesis polyester polyether polycarboxylate water-reducer and preparation method thereof | |
| CN103965416B (en) | Component high-early strength type polycarboxylic acids dehydragent and preparation method thereof | |
| CN106279559A (en) | A kind of saccharide carboxylate modified polycarboxylic acid water reducer and preparation method thereof | |
| CN103833940B (en) | A kind of containing phosphine polycarboxylate water-reducer and preparation method thereof | |
| CN110642995A (en) | Preparation method of polycarboxylic acid water reducer for low-slump concrete | |
| CN105601843A (en) | Early-strength ethers polycarboxylic acid water reducing agent and preparation method thereof | |
| CN109265622A (en) | A kind of no heat source high-performance controlled-release polycarboxylic acid water reducing agent and preparation method thereof | |
| CN106832147A (en) | A kind of preparation method containing phosphonyl group polycarboxylate water-reducer | |
| CN105461866A (en) | Viscosity-reducing type polycarboxylic-acid water-reducing agent and preparation method thereof | |
| CN107151294A (en) | Early-strength polycarboxylate superplasticizer and its preparation method and application | |
| CN106632884A (en) | Method for preparing polycarboxylate superplasticizer | |
| CN102807653B (en) | Co-polycarboxylic acid high efficiency water reducer capable of compounding with naphthalene formaldehyde water reducer and method for preparing same | |
| CN106800621A (en) | A kind of ultra early-strength polycarboxylate water-reducer and preparation method thereof | |
| CN105037647A (en) | Preparing method for polycarboxylic admixture | |
| CN105060759A (en) | Preparation method of slow-release polycarboxylate superplasticizer | |
| CN105017489A (en) | prenylpolyethoxy ether water reducer and preparation method 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190125 |
|
| RJ01 | Rejection of invention patent application after publication |