CN102633965A - Synthetic method of aliphatic-series sulfonate high-efficiency water reducer - Google Patents
Synthetic method of aliphatic-series sulfonate high-efficiency water reducer Download PDFInfo
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- CN102633965A CN102633965A CN2012101369071A CN201210136907A CN102633965A CN 102633965 A CN102633965 A CN 102633965A CN 2012101369071 A CN2012101369071 A CN 2012101369071A CN 201210136907 A CN201210136907 A CN 201210136907A CN 102633965 A CN102633965 A CN 102633965A
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- efficiency water
- aliphatic
- water reducer
- acetone
- reducing agent
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 60
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 title claims abstract description 29
- 238000010189 synthetic method Methods 0.000 title claims abstract 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 20
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 9
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 4
- 229920002521 macromolecule Polymers 0.000 claims abstract 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 10
- YIBPLYRWHCQZEB-UHFFFAOYSA-N formaldehyde;propan-2-one Chemical compound O=C.CC(C)=O YIBPLYRWHCQZEB-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 6
- 239000008030 superplasticizer Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims 1
- 235000010265 sodium sulphite Nutrition 0.000 claims 1
- 238000001308 synthesis method Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 230000015271 coagulation Effects 0.000 abstract description 4
- 238000005345 coagulation Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000003111 delayed effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000004574 high-performance concrete Substances 0.000 abstract description 2
- 229940101006 anhydrous sodium sulfite Drugs 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 235000019256 formaldehyde Nutrition 0.000 abstract 1
- NIQQIJXGUZVEBB-UHFFFAOYSA-N methanol;propan-2-one Chemical compound OC.CC(C)=O NIQQIJXGUZVEBB-UHFFFAOYSA-N 0.000 abstract 1
- 238000012805 post-processing Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 7
- -1 ketone compounds Chemical class 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 150000002790 naphthalenes Chemical class 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000006482 condensation reaction Methods 0.000 description 3
- 230000003467 diminishing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000007859 condensation product Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000005810 carbonylation reaction Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 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
- 238000011056 performance test Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- KSVSZLXDULFGDQ-UHFFFAOYSA-M sodium;4-aminobenzenesulfonate Chemical compound [Na+].NC1=CC=C(S([O-])(=O)=O)C=C1 KSVSZLXDULFGDQ-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a synthetic method of an aliphatic-series sulfonate high-efficiency water reducer and belongs to the field of macromolecule synthesis. According to the synthetic method, acetone and methanal serve as condensation units, anhydrous sodium sulfite serves as a catalyst and a sulfonating agent, and the whole preparation process comprises the following steps of: preparation of acetone-methanol condensation compounds, and synthesis and post-processing of a water reducer. The main performance indexes of the aliphatic-series sulfonate high-efficiency water reducer meet the quality requirements on first-rate products in the national standard GB8076-2008 on 'concrete admixture'. Compared with a naphthalene-series high-efficiency water reducer, the aliphatic-series sulfonate high-efficiency water reducer has a better water reduction strengthening effect and especially has better delayed coagulation, thus being applicable to the long-distance delivery of concrete and being beneficial to preparation of high-strength high-performance concrete.
Description
Technical field
The present invention relates to a kind of employing sodium sulphite anhydrous 99.3, acetone and formaldehyde is main raw material, and the method for two step synthetic fat family sulphonate high efficiency water reducing agents belongs to the Polymer Synthesizing field.
Background technology
Water reducer is one of research at present and most widely used concrete admixture; Its basic role is the flowability that can increase concrete and cement slurry, reduces mixing water consumption and cement consumption, makes concrete wc drop to minimum and improves concrete hardening strength.The aliphatic sulfonate high efficiency water reducing agent is a kind of high diminishing, high enhanced water reducer kind; Because have the anti-advantage that high concentrated salt solution performance is good and resistance to elevated temperatures is good; Be used as well cement tolerance blocking use in Europe with the U.S. at first, but satisfied when heavy duty service the requirement that good flowability He pumping will be arranged cement slurry.Compare with naphthalene water reducer; The aliphatic sulfonate high efficiency water reducing agent has advantages such as water-reducing rate height, gain in strength is fast, amount of air entrainment is little; And production technique is simple, with short production cycle, environmentally safe in production and the use; Meet the requirement of building resource-conserving and friendly environment society, received the growing interest of admixture production and applying unit, also more and more active to the research of its production technique and application performance aspect.
Utilize S-WAT, acetone and prepared formaldehyde aliphatic category water reducer to have many pieces of public technology bibliographical informations.Chen Xiaolu etc. (the synthetic and performance [J] of aliphatic high-efficiency water reducing agent. commerical ready-mixed concrete, 2011,05:23 ~ 25) pointed out to utilize formaldehyde, acetone, S-WAT method for main raw synthetic fat family high efficiency water reducing agent.One Chinese patent application 200910029985.X has openly applied for " a kind of aliphatic high-efficiency water reducing agent and preparation method thereof ", points out that aliphatic high-efficiency water reducing agent processed by following materials in percentage by mass: the sodium sulphite anhydrous 99.3 10% ~ 18% of 65% ~ 85% concentration; The Sodium sulfanilate 5% ~ 10% of 96% ~ 100% concentration; The sodium hydroxide 0.5% ~ 2% of 30% ~ 40% concentration; The acetone 8% ~ 15% of 99% ~ 100% concentration; The formaldehyde 15% ~ 35% of 36.5% ~ 37.5% concentration; Water surplus.May further comprise the steps in " a kind of preparation method of low cost aliphatic high efficiency water reducing agent " of one Chinese patent application number 200910029201.3 open applications: at first, in reaction kettle, put into portion water and sulphonating agent, carry out the sulphonating agent hydrolysis reaction; Then, in above-mentioned solution, splash into ketone compounds, carry out the sulfonation reflux reaction; Then, in solution, drip aldehyde compound, carry out carbonylation reaction, the control rate of addition makes temperature in the kettle maintain 35 ℃ ~ 55 ℃, adds portion water therebetween to keep required lesser temps; Then, drip the residue aldehyde compound fast and make temperature rise to 90 ℃ ~ 95 ℃, carry out the pyrocondensation reaction; At last, add remainder water, obtain liquid aliphatic family high efficiency water reducing agent after the mixing cooling.One Chinese patent application number 200310123840.9 " Aliphatic sulfonate superplasticizer and its preparation methods " adopt the ketone compounds that contains carbonyl and aldehydes as the condensation monomer in addition; With sulphite is sulphonating agent; In alkaline aqueous solution, carry out condensation reaction; Make molecular weight 3000 ~ 10000, contain the water-soluble polymer condenses of hydrophilic radicals such as sulfonic group, carboxyl, hydroxyl in the molecule.
Nowadays, carry out seldom for the preparation technology of method of fractional steps synthetic fat family sulphonate high efficiency water reducing agent and the research work of reaction mechanism at present.This patent adopts two-step approach synthetic fat family sulphonate series high-efficiency water-reducing agent first; This achievement in research is for improving the concrete application performance and widening aspect such as aliphatic sulfonate series high-efficiency water-reducing agent range of application; Have positive meaning, also necessary microscopic theory and experimental data is provided simultaneously for industrial production.
Summary of the invention
The present invention proposes a kind of compound method of aliphatic sulfonate high efficiency water reducing agent, has confirmed the synthesis technologic parameter of aliphatic sulfonate series high-efficiency water-reducing agent, comprises proportioning raw materials, reaction times and temperature of reaction, and has optimized processing condition.
Technical scheme of the present invention is: adopt two-step approach synthetic fat family sulphonate high efficiency water reducing agent, concrete steps comprise as follows:
(1) the macromolecular preparation of acetone-formaldehyde condensation products: preparation formaldehyde: acetone mol ratio
1～1.5:1 mixing solutions, be 0.6MPa～0.7MPa at pressure, 45 ℃～60 ℃ of temperature are reacted 60min～90min under stir speed (S.S.) 85r/min ~ 100r/min condition, after the condensation reaction fully, process acetone-formaldehyde condensation liquid;
(2) building-up reactions of water reducer: with formaldehyde: acetone-formaldehyde condensation liquid: sodium sulphite anhydrous 99.3 is according to mol ratio 1:1:0.35 ~ 0.45 (sodium sulphite anhydrous 99.3 is as catalyzer and sulphonating agent); At pressure is 0.6MPa～0.7MPa; Temperature is 80 ℃～90 ℃, and stir speed (S.S.) is after reacting 2.5h～3.5h under 100r/min～115r/min condition, the oven dry distillation; Obtain light brown viscous liquid, be the aliphatic sulfonate high efficiency water reducing agent.
Said formaldehyde, acetone, S-WAT are analytical pure.
The aliphatic sulfonate high efficiency water reducing agent water ratio that obtains in the said step (2) is 30～40wt%.
The viscosity of polymkeric substance in solvent is the polymericular weight visualize, and polymericular weight is big more, and it is big more to show as viscosity, and both the viscosity of water reducer was big more; Flowing degree of net paste of cement has reacted the diminishing dispersing property of water reducer to a certain extent, and the high more then dispersing property of flowing degree of net paste of cement is strong more.
Advantage of the present invention and positively effect:
The present invention has positive effect aspect improving the concrete application performance and widening aliphatic sulfonate high efficiency water reducing agent range of application.
The main performance index of prepared aliphatic sulfonate high efficiency water reducing agent has all reached the specification of quality of acceptable end product among the GB GB8076-2008 " concrete admixture ".At volume is 8% o'clock, and water-reducing rate is not less than 26%, and the bleeding rate ratio is not more than 58%, initial set and final setting time difference be respectively+and 90min and+110min, 3d, 7d, 28d compressive strength rate are respectively 185%, 180%, 151%.Compare with naphthalene series high-efficiency water-reducing agent, the aliphatic sulfonate high efficiency water reducing agent has better diminishing reinforced effects, especially has delayed coagulation preferably, is fit to concrete remote conveying, helps preparing high-strength high-performance concrete.
The practical implementation method
Below in conjunction with embodiment the present invention is done to further describe, but the invention is not restricted to the following stated scope.
Embodiment 1
The preparation method of the 1# aliphatic sulfonate high efficiency water reducing agent of present embodiment:
(1) the macromolecular preparation of acetone-formaldehyde condensation products: preparation formaldehyde: the mixing solutions of acetone mol ratio 1:1; At pressure is 0.6MPa, and 45 ℃ of temperature are reacted 60min under the stir speed (S.S.) 85r/min condition; After the condensation reaction fully, process acetone-formaldehyde condensation liquid;
(2) building-up reactions of water reducer: with formaldehyde: acetone-formaldehyde condensation liquid: S-WAT is according to mol ratio 1:1:0.35 (sodium sulphite anhydrous 99.3 is as catalyzer and sulphonating agent); At pressure is 0.6MPa; Temperature is 80 ℃, and stir speed (S.S.) is after reacting 2.5h under the 100r/min condition, the oven dry distillation; Obtaining water ratio is the light brown viscous liquid of 40wt%, is 1# aliphatic sulfonate high efficiency water reducing agent.
Embodiment 2
The preparation method of the 2# aliphatic sulfonate high efficiency water reducing agent of present embodiment is identical with embodiment 1, and concrete experiment parameter is as shown in table 1.
Embodiment 3
The preparation method of the 3# aliphatic sulfonate high efficiency water reducing agent of present embodiment is identical with embodiment 1, and concrete experiment parameter is as shown in table 1.
The performance of the test parameter of table 1 embodiment 1～3 and the water reducer that obtains
The application performance test
According to GB/T 8077-2000 " Methods for testing uniformity of concrete admixture "; To the aliphatic sulfonate high efficiency water reducing agent; Carry out flowing degree of net paste of cement, concrete water-reducing ratio, compressive strength rate, bleeding rate, the slump through the time loss, time of coagulation mensuration such as difference, obtain as drawing a conclusion:
(1) is 0.8% at the water reducer volume; Homemade aliphatic sulfonate high efficiency water reducing agent has bigger flowing degree of net paste of cement than naphthalene series high-efficiency water-reducing agent under the identical wc; Dispersing property to cement granules is better, and along with the increase of wc, the flowing degree of net paste of cement of mixing aliphatic water reducing agent increases gradually; Reach 230mm, and the best wc that draws aliphatic high-efficiency water reducing agent is 1:3.
(2) fixedly wc is 1:3; Under equal volume, the aliphatic sulfonate high efficiency water reducing agent has bigger flowing degree of net paste of cement than naphthalene series high-efficiency water-reducing agent, and along with the increase of volume; The flowing degree of net paste of cement of mixing aliphatic water reducing agent increases gradually, reaches more than the 200mm.Consider that from the dispersing property aspect of product the volume of aliphatic sulfonate high efficiency water reducing agent is controlled at 0.6% ~ 0.8% for best.
(3) aspect the concrete application performance
Water reducer is compared, and is mixed with the fresh concrete of aliphatic sulfonate high efficiency water reducing agent under the identical wc, and compressive strength rate increases; When 3d, compressive strength rate reaches 185%, and the 7d compressive strength rate reaches 180%; The 28d compressive strength rate reaches 151%, and volume was at 0.8% o'clock, and bleeding rate reduces; At volume 0.4% ~ 0.6% o'clock, the aliphatic sulfonate high efficiency water reducing agent has higher water-reducing rate, and water-reducing rate reaches more than 16%; Be higher than the water-reducing rate requirement of the high efficiency water reducing agent 14% of national Specification, and economical rationality under this consumption.
(4) the aliphatic sulfonate high efficiency water reducing agent has delayed coagulation preferably, and initial set and final setting time have prolonged 70min ~ 90min and 80min ~ 110min respectively, compares with naphthalene series high-efficiency water-reducing agent, helps concrete remote conveying.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992681A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Production method of high-efficiency aliphatic water-reducing agent |
| CN104743954A (en) * | 2015-03-18 | 2015-07-01 | 徐兆桐 | Method for preparing water reducer from oxyanthraquinone byproduct |
| CN106396456A (en) * | 2016-08-26 | 2017-02-15 | 河南科之杰新材料有限公司 | Preparation method of aliphatic powdery water reducing agent |
| CN111087190A (en) * | 2019-12-21 | 2020-05-01 | 浙江吉盛化学建材有限公司 | Aliphatic water reducer prepared from lignosulfonate wastewater and synthesis process thereof |
| CN112608059A (en) * | 2020-11-30 | 2021-04-06 | 科之杰新材料集团河南有限公司 | Water reducing agent and improvement method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634794A (en) * | 2003-12-31 | 2005-07-06 | 吴霖秀 | High efficiency aliphatic sulfonate water reducing agent and method for preparing same |
| CN101508537A (en) * | 2009-03-30 | 2009-08-19 | 镇江市百瑞吉混凝土外加剂有限公司 | Aliphatic high-efficiency water reducing agent and method of producing the same |
-
2012
- 2012-05-07 CN CN2012101369071A patent/CN102633965A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634794A (en) * | 2003-12-31 | 2005-07-06 | 吴霖秀 | High efficiency aliphatic sulfonate water reducing agent and method for preparing same |
| CN101508537A (en) * | 2009-03-30 | 2009-08-19 | 镇江市百瑞吉混凝土外加剂有限公司 | Aliphatic high-efficiency water reducing agent and method of producing the same |
Non-Patent Citations (2)
| Title |
|---|
| 曹优然: "脂肪族高效减水剂的合成与性能", 《科技创新导报》, no. 16, 1 June 2008 (2008-06-01), pages 13 - 14 * |
| 陈小路等: "脂肪族高效减水剂的合成与性能", 《商品混凝土》, no. 05, 15 May 2011 (2011-05-15), pages 23 - 24 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992681A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Production method of high-efficiency aliphatic water-reducing agent |
| CN104743954A (en) * | 2015-03-18 | 2015-07-01 | 徐兆桐 | Method for preparing water reducer from oxyanthraquinone byproduct |
| CN106396456A (en) * | 2016-08-26 | 2017-02-15 | 河南科之杰新材料有限公司 | Preparation method of aliphatic powdery water reducing agent |
| CN106396456B (en) * | 2016-08-26 | 2018-07-03 | 河南科之杰新材料有限公司 | A kind of preparation method of aliphatic powder water-reducing agent |
| CN111087190A (en) * | 2019-12-21 | 2020-05-01 | 浙江吉盛化学建材有限公司 | Aliphatic water reducer prepared from lignosulfonate wastewater and synthesis process thereof |
| CN112608059A (en) * | 2020-11-30 | 2021-04-06 | 科之杰新材料集团河南有限公司 | Water reducing agent and improvement method and application thereof |
| CN112608059B (en) * | 2020-11-30 | 2022-04-01 | 科之杰新材料集团河南有限公司 | Water reducing agent and improvement method and application thereof |
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Application publication date: 20120815 |