CN105036595B - High-liquidity polycarboxylic acid water reducing agent and preparation method thereof - Google Patents
High-liquidity polycarboxylic acid water reducing agent and preparation method thereof Download PDFInfo
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- CN105036595B CN105036595B CN201510461080.5A CN201510461080A CN105036595B CN 105036595 B CN105036595 B CN 105036595B CN 201510461080 A CN201510461080 A CN 201510461080A CN 105036595 B CN105036595 B CN 105036595B
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- water
- deionized water
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- reducing agent
- reducer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002253 acid Substances 0.000 title abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract description 14
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 14
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000000178 monomer Substances 0.000 claims abstract description 12
- 229920000570 polyether Polymers 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 10
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims abstract description 9
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 claims abstract description 7
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 6
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims abstract description 5
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229920005646 polycarboxylate Polymers 0.000 claims description 13
- 238000010792 warming Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 claims description 2
- BYDRTKVGBRTTIT-UHFFFAOYSA-N 2-methylprop-2-en-1-ol Chemical group CC(=C)CO BYDRTKVGBRTTIT-UHFFFAOYSA-N 0.000 claims 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 238000002242 deionisation method Methods 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 239000012986 chain transfer agent Substances 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 abstract 1
- 229910000342 sodium bisulfate Inorganic materials 0.000 abstract 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- WCASXYBKJHWFMY-UHFFFAOYSA-N crotyl alcohol Chemical group CC=CCO WCASXYBKJHWFMY-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The invention particularly relates to a high-liquidity polycarboxylic acid water reducing agent which comprises 15-20% of polyether monomer, 4-9% of ethylene glycol diacetate, 3-5% of a chain transfer agent, 4-9% of sulfamic acid, 2.5-5.5% of sodium bisulfite, 1-2% of azobisisobutyronitrile, 2-5% of sodium hydroxide and the balance of deionized water. A preparation method for the high-liquidity polycarboxylic acid water reducing agent comprises the following steps: (1), adding the polyether monomer and deionized water into a reaction kettle, uniformly stirring for completely dissolving, and heating to 60+/- 2 DEG C; (2), adding sodium bisulfate and ethylene glycol diacetate, continuously stirring for 30 min, after complete dispersing, adding azobisisobutyronitrile and sulphamic acid, heating to 80+/- 2 DEG C and reacting for 30 min; (3), adding the chain transfer agent, wherein the chain transfer agent is added into the reaction kettle for five times at the interval of 10 min; (4), continuously reacting for 3 h, cooling to room temperature, adding deionized water for dissolving sodium hydroxide so as to adjust pH to 7.0; finally, replenishing deionized water, and continuously stirring for 30 min so as to obtain the water reducing agent. By adopting the water reducing agent provided by the invention, the problem that concrete collapses due to high air temperature, long transport time and other factors is solved.
Description
Technical field
Research and manufacturing technology field the invention belongs to concrete admixture, and in particular to a kind of collapse-preventing type polycarboxylic acids high
Water reducer and preparation method thereof.
Technical background
China from polycarboxylate water-reducer products application in 2001 since Shanghai Magnet Suspension, from making for technology and market
Consumption can be seen that development is very fast.The application trend of poly carboxylic acid series water reducer is from past Important Project keypoint part
Using to general Important Project, ordinary skill application, from high grade, special functional concrete progressively to ordinary skill coagulation
Application development in soil.
Xinjiang is in construction of the West Region Rapid developing region, and architectural engineering large scale investment is built, and concrete demand constantly increases
Plus, corresponding additive usage amount demand is also continuously increased, and with the continuous improvement of national requirements for environmental protection, polycarboxylate water-reducer makes
Also increased increasingly with share, original naphthalene water reducer has gradually turned into a kind of trend by polycarboxylic acids products substitution.Due to Xinjiang gas
The factors such as time, geographical environment are fettered, and building-site is far away apart from mixing plant scene, and this requires that the guarantor of concrete is collapsed the time
It is corresponding to increase.
The content of the invention
It is an object of the invention to：A kind of collapse-preventing type polycarboxylate water-reducer high is provided, similar Xinjiang region can be effectively solved
Because temperature is high, slump loses serious problem caused by the unfavorable factor such as haulage time is long.
The object of the present invention is achieved like this：A kind of collapse-preventing type polycarboxylate water-reducer high, the water reducer is by following groups
Material is divided to be formulated according to mass percent：Polyether monomer 15-20%, ethylene acetate 4-9%, chain-transferring agent 3-
5%th, sulfamic acid 4-9%, sodium hydrogensulfite 2.5-5.5%, azodiisobutyronitrile 1-2%, NaOH 2-5% and surplus
Deionized water.Described polyether monomer is methyl allyl alcohol polyoxyethylene ether TPEG or allyl polyethenoxy ether APEG.Institute
The chain-transferring agent stated is the one kind in mercaptoethanol, TGA, isopropanol.
The preparation method of above-mentioned collapse-preventing type polycarboxylate water-reducer high comprises the steps：(1) by polyether monomer and in right amount
Deionized water add reactor in, uniform stirring after polyether monomer is dissolved completely in deionized water, is warming up to 60 ± 2 DEG C,
It is standby；
(2) to sodium hydrogensulfite and ethylene acetate is added in step (1), continue to stir 30min, after being completely dispersed
Azodiisobutyronitrile and sulfamic acid are added, 80 ± 2 DEG C are warming up to, 30min is reacted, it is standby；
(3) to chain-transferring agent is added in step (2), in 5 addition reactors of chain-transferring agent point, time interval is 10min；
(4) after adding chain-transferring agent in step (3), continue to react 3h, it is then cooled to room temperature, adds and gone with appropriate
It is 7.0 that ion dissolved hydrogen water sodium oxide molybdena is adjusted solution ph；Finally, deionized water to above-mentioned component material each component is added
Than sum for absolutely, 30min is stirred in continuation, you can obtain collapse-preventing type polycarboxylate water-reducer high.
Beneficial effect：The collapse-preventing type water reducer high that the present invention is developed, the sulfonic acid group of side chain is in cement granules in its molecule
Surface forms layer protecting film, can effectively prevent aquation, extends cement setting time, when solid volume increases produced crystallization
When pressure reaches certain numerical value, diaphragm will local spalling, the diffusion of water and ion loses obstruction, and aquation can just be continued
Carry out.2.5-3h slump gradual loss can be controlled in 20-30mm, in the case where ensureing that workability of concrete is constant, can have
Effect is solved under hot conditions, loss of slump serious problem during long-distance transportation.
Specific embodiment
Table 1 is embodiment A, B, the proportioning of C, D, E and F
Table 1
The preparation method of the collapse-preventing type polycarboxylate water-reducer high described in above-described embodiment A-F comprises the steps：
(1) by polyether monomer and appropriate deionized water addition reactor, uniform stirring is completely dissolved polyether monomer
It is standby in after deionized water, being warming up to 60 ± 2 DEG C；
(2) to sodium hydrogensulfite and ethylene acetate is added in step (1), continue to stir 30min, after being completely dispersed
Azodiisobutyronitrile and sulfamic acid are added, 80 ± 2 DEG C are warming up to, 30min is reacted, it is standby；
(3) to chain-transferring agent is added in step (2), in 5 addition reactors of chain-transferring agent point, time interval is 10min；
(4) after adding chain-transferring agent in step (3), continue to react 3h, it is then cooled to room temperature, adds and gone with appropriate
It is 7.0 that ion dissolved hydrogen water sodium oxide molybdena is adjusted solution ph；Finally, deionized water to above-mentioned component material each component is added
Than sum for absolutely, 30min is stirred in continuation, you can obtain collapse-preventing type polycarboxylate water-reducer high.
Implementation result is verified
According to GBT 8076-2008《Concrete admixture》Experiment is from P.042.5 cement, flyash (one-level), miberal powder
Double-doped, C30 concrete mixs, product A, B, C, D, E, F of the present invention carry out contrast experiment with commercially available polycarboxylate water-reducer, initially
The slump and 1 hour, 2 hours, 3 hours slump results it is as shown in table 2.
Table 2
Conclusion：Contrast experiment can see product consumption 0.2% of the present invention, during the consumption 0.25% of commercially available prod, product of the present invention
A, B, C, D, E, F initial slump degree in the case of identical match ratio, same raw materials are identical, product of the present invention within 1 hour
Slump is not lost, and loss of slump is not obvious within 2 hours, and loss of slump can be controlled in 20-30mm within 3 hours, illustrates this product
The guarantor of product ability of collapsing is very notable, and 28 days compression strength can improve more than 20%, substantially increase the performance of concrete, protects
The quality of job site is hindered.
Claims (4)
1. a kind of collapse-preventing type polycarboxylate water-reducer high, it is characterised in that：The water reducer is by following component materials according to quality hundred
Ratio is divided to be formulated：Polyether monomer 15-20%, ethylene acetate 4-9%, chain-transferring agent 3-5%, sulfamic acid 4-9%, sulfurous
The deionized water of sour hydrogen sodium 2.5-5.5%, azodiisobutyronitrile 1-2%, NaOH 2-5% and surplus.
2. water reducer according to claim 1, it is characterised in that：Described polyether monomer is methallyl alcohol polyoxyethylene
Ether TPEG or allyl polyethenoxy ether APEG.
3. water reducer according to claim 1, it is characterised in that：Described chain-transferring agent be mercaptoethanol, TGA,
One kind in isopropanol.
4. a kind of preparation method of the collapse-preventing type polycarboxylate water-reducer high prepared described in claim 1, it is characterised in that：The preparation
Method comprises the steps：
（1）By in polyether monomer and appropriate deionized water addition reactor, uniform stirring is dissolved completely in polyether monomer
After ionized water, 60 ± 2 DEG C are warming up to, it is standby；
（2）To step（1）It is middle to add sodium hydrogensulfite and ethylene acetate, continue to stir 30min, add after being completely dispersed
Enter azodiisobutyronitrile and sulfamic acid, be warming up to 80 ± 2 DEG C, react 30min, it is standby；
（3）To step（2）Middle addition chain-transferring agent, in 5 addition reactors of chain-transferring agent point, time interval is 10min；
（4）Step（3）After middle addition chain-transferring agent, continue to react 3h, it is then cooled to room temperature, adds with appropriate deionization
It is 7.0 that dissolved hydrogen water sodium oxide molybdena is adjusted solution ph；Finally, deionized water is added to above-mentioned component material each component than it
Be absolutely, to continue to stir 30min, you can obtain collapse-preventing type polycarboxylate water-reducer high.
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| CN201510461080.5A CN105036595B (en) | 2015-07-30 | 2015-07-30 | High-liquidity polycarboxylic acid water reducing agent and preparation method thereof |
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| CN201510461080.5A CN105036595B (en) | 2015-07-30 | 2015-07-30 | High-liquidity polycarboxylic acid water reducing agent and preparation method thereof |
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| CN109517115A (en) * | 2018-12-03 | 2019-03-26 | 广东科隆智谷新材料股份有限公司 | A kind of preparation method of polycarboxylate water-reducer |
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| CN101734879B (en) * | 2009-12-27 | 2012-05-16 | 长沙理工大学 | Polyurethane/polycarboxylic acid compound water reducer for concrete and preparation thereof |
| CN102199298A (en) * | 2011-03-23 | 2011-09-28 | 中国日用化学工业研究院 | Preparation method for polycarboxylic acid series comb-shaped surface active agent |
| CN102675557A (en) * | 2011-12-16 | 2012-09-19 | 天津冶建特种材料有限公司 | Slow-release type concrete slump retaining agent and preparation method thereof |
| CN102976655B (en) * | 2012-12-05 | 2014-07-02 | 江苏苏博特新材料股份有限公司 | Slump retaining polycarboxylic acid superplasticizer |
| CN104140503A (en) * | 2014-07-30 | 2014-11-12 | 江西格雷斯科技股份有限公司 | Method for synthesizing high-water-reduction high-slump-retaining high-performance polycarboxylate water reducer at normal temperature |
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Address after: 830013 Urumqi high tech Zone (new city) North Industrial Park, blue sky road, No. 216, No. Patentee after: DELAND WATER TECHNOLOGY Co.,Ltd. Address before: 830013, 216, Lantian Road, North Industrial Zone, hi tech Zone, the Xinjiang Uygur Autonomous Region, Urumqi Patentee before: XINJIANG DELAND Co.,Ltd. |
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Denomination of invention: A high collapse resistant polycarboxylate superplasticizer and its preparation method Granted publication date: 20170524 Pledgee: Beijing Bank Co.,Ltd. Urumqi Branch Pledgor: DELAND WATER TECHNOLOGY CO.,LTD. Registration number: Y2024650000002 |
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