CN101845131B - Preparation method of high-efficiency water reducing agent - Google Patents
Preparation method of high-efficiency water reducing agent Download PDFInfo
- Publication number
- CN101845131B CN101845131B CN201010179223A CN201010179223A CN101845131B CN 101845131 B CN101845131 B CN 101845131B CN 201010179223 A CN201010179223 A CN 201010179223A CN 201010179223 A CN201010179223 A CN 201010179223A CN 101845131 B CN101845131 B CN 101845131B
- Authority
- CN
- China
- Prior art keywords
- acetone
- reducing agent
- formaldehyde
- water reducing
- water
- 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.)
- Expired - Fee Related
Links
Abstract
The invention belongs to water reducing agent technology used for concrete, and particularly relates to a preparation method of high-efficiency water reducing agent, which comprises the steps of: taking sodium sulfite, formaldehyde, water and acetone as raw materials; firstly fully mixing the sodium sulfite and the water for hydrolysis reaction; then, adding the formaldehyde and fully mixing; and finally, dripping the acetone, carrying out heat preservation reaction after the acetone is fully added, and obtaining the high-efficiency water reducing agent. The method omits an external heating source used for supplying heat, saves the energy consumption, and is applicable to industrialized application.
Description
(1) technical field
The invention belongs to the water reducer technology that concrete is used, particularly a kind of preparation method of high efficiency water reducing agent.
(2) background technology
Water reducer is called the drag reduction dispersion agent again, is important concrete admixture, can improve the flowability of concrete mud effectively.Very ripe about the cement water reducing agent technology at present.The most frequently used preparation method adds S-WAT and water in the reaction vessel earlier; Constantly stir and make its hydrolysis generate sodium sulfite anhy 96; Produce the catalyzer of highly basic sodium hydroxide as polycondensation simultaneously, heat temperature raising is after 50-60 ℃, and the mixed solution with formaldehyde, acetone and Sodium Pyrosulfite adds in the above-mentioned sodium sulfite aqueous solution in batches again; Add the back at 50-70 ℃ of reaction 0.5-3h, and then be warming up to 80-120 ℃ of reaction 1-3h.Following method is provided in Chinese patent CN101624269 in addition: water, S-WAT are added in the reaction vessel; Added the acetone stirring and refluxing 30～60 minutes in temperature below 20～40 ℃; Mass concentration 37% formaldehyde solution is added drop-wise in the reaction vessel of the first step; Control dropwise reaction speed dropwises at 1～2h, heat temperature raising to 80～120 ℃ then, isothermal reaction 3～6h; Can obtain mass concentration and be 30%～40% the liquid finished product aliphatic high-efficiency water reducing agent of red-brown, this method can solve the uneven problem of MWD of reaction product.But above method all needs heating, and this just needs outer thermal source, so energy consumption is bigger.
(3) summary of the invention
The object of the present invention is to provide a kind of preparation method of high efficiency water reducing agent, can overcome the big defective of prior art energy consumption.
The technical scheme that the present invention adopts is following:
A kind of preparation method of high efficiency water reducing agent; With S-WAT, formaldehyde, water and acetone is raw material, earlier S-WAT, water thorough mixing is made its hydrolytic reactions, adds the formaldehyde thorough mixing then; Be added dropwise to acetone afterwards again, adding fully, the back insulation reaction promptly gets described high efficiency water reducing agent.
Further, the amount of substance ratio that feeds intake of each raw material is S-WAT: water: formaldehyde: acetone is 1: 10-13: 8-11: 1.5-2.
Treating that formaldehyde adds drips acetone after system is warming up to 30-50 ℃ automatically behind the thorough mixing again.
The dropping time of acetone is controlled to be 1-1.5h and is advisable.
Acetone adds back insulation reaction 1-1.5h fully.
With respect to prior art, the present invention has the following advantages:
The present invention still adopts the raw material of prior art for preparing water reducer, and difference is to change the order that raw material adds, when adding formaldehyde and acetone; Utilize reaction to heat up automatically; Thereby no longer need the external heat source heat supply, practiced thrift energy consumption, be fit to industrial applications.
(4) embodiment:
Below with specific embodiment technical scheme of the present invention is described:
Embodiment 1
The preparation method of high efficiency water reducing agent is a raw material with S-WAT, formaldehyde, water and acetone, earlier 140g S-WAT, 240g water thorough mixing is constantly stirred; Add 320g formaldehyde thorough mixing then, when the question response system is warming up to 30 ℃ automatically, be added dropwise to 110g acetone; The joining day of acetone is controlled to be 1h; Acetone all heating continues insulation reaction 1h after monitoring system is warming up to 90 ℃ automatically, promptly gets described high efficiency water reducing agent.
Embodiment 2
The preparation method of high efficiency water reducing agent is a raw material with S-WAT, formaldehyde, water and acetone, earlier 150g S-WAT, 260g water thorough mixing is constantly stirred; Add 350g formaldehyde thorough mixing then, when the question response system is warming up to 40 ℃ automatically, be added dropwise to 120g acetone; The joining day of acetone is controlled to be 70mi n; Acetone all heating continues insulation reaction 80min after monitoring system is warming up to 92 ℃ automatically, promptly gets described high efficiency water reducing agent.
Embodiment 3
The preparation method of high efficiency water reducing agent is a raw material with S-WAT, formaldehyde, water and acetone, earlier 160g S-WAT, 280g water thorough mixing is constantly stirred; Add 380g formaldehyde thorough mixing then, when the question response system is warming up to 50 ℃ automatically, be added dropwise to 130g acetone; The joining day of acetone is controlled to be 90min; Acetone all heating continues insulation reaction 90min after monitoring system is warming up to 90 ℃ automatically, promptly gets described high efficiency water reducing agent.
The effect example:
The high efficiency water reducing agent that utilizes embodiment 1-3 preparation respectively is respectively 20%, 22%, 24% according to the mensuration that GB GB8076-1997 carries out Water-reducing Ratio of Concrete Admixtures through measuring water-reducing rate.
What need statement is; Above embodiment only is a preferred way of realization of the present invention; Unrestricted technical scheme of the present invention only in order to explanation, although with reference to the foregoing description the present invention is specified, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention; And replace any modification or the part that do not break away from the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. the preparation method of a high efficiency water reducing agent; With S-WAT, formaldehyde, water and acetone is raw material; It is characterized in that, earlier S-WAT, water thorough mixing are made its hydrolytic reactions, add the formaldehyde thorough mixing then; Be added dropwise to acetone afterwards again, adding fully, the back insulation reaction promptly gets described high efficiency water reducing agent; The amount of substance ratio that feeds intake of each raw material is S-WAT: water: formaldehyde: acetone is 1: 10-13: 8-11: 1.5-2; Treating that formaldehyde adds drips acetone after system is warming up to 30-50 ℃ automatically behind the thorough mixing again; The dropping time of acetone is 1-1.5h; Acetone adds back insulation reaction 1-1.5h fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010179223A CN101845131B (en) | 2010-05-21 | 2010-05-21 | Preparation method of high-efficiency water reducing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010179223A CN101845131B (en) | 2010-05-21 | 2010-05-21 | Preparation method of high-efficiency water reducing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101845131A CN101845131A (en) | 2010-09-29 |
| CN101845131B true CN101845131B (en) | 2012-10-03 |
Family
ID=42769959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010179223A Expired - Fee Related CN101845131B (en) | 2010-05-21 | 2010-05-21 | Preparation method of high-efficiency water reducing agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101845131B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515610B (en) * | 2011-12-05 | 2013-08-07 | 马鞍山中海新材料有限公司 | Aliphatic series high efficiency water reducing agent and preparation method thereof |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634451A (en) * | 1985-05-10 | 1987-01-06 | Diamond Shamrock Chemicals Company | Aqueous carbonaceous mixtures |
| CN1066448A (en) * | 1991-05-08 | 1992-11-25 | 中原石油勘探局钻井工程服务公司 | The manufacture method of sulphonated acetone formaldehyde polycondensates |
| CN1634794A (en) * | 2003-12-31 | 2005-07-06 | 吴霖秀 | High efficiency aliphatic sulfonate water reducing agent and method for preparing same |
| CN101531479A (en) * | 2009-04-03 | 2009-09-16 | 南京瑞迪高新技术公司 | Method for preparing low cost aliphatic high efficiency water reducing agent |
| CN101575186A (en) * | 2009-05-11 | 2009-11-11 | 江苏鼎达建材有限公司 | Aliphatic concrete water reducing agent and preparation process thereof |
| CN101624269A (en) * | 2009-08-03 | 2010-01-13 | 常州汇迪建材有限公司 | Aliphatic series high-efficiency water reducing agent and preparation method thereof |
-
2010
- 2010-05-21 CN CN201010179223A patent/CN101845131B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634451A (en) * | 1985-05-10 | 1987-01-06 | Diamond Shamrock Chemicals Company | Aqueous carbonaceous mixtures |
| CN1066448A (en) * | 1991-05-08 | 1992-11-25 | 中原石油勘探局钻井工程服务公司 | The manufacture method of sulphonated acetone formaldehyde polycondensates |
| CN1634794A (en) * | 2003-12-31 | 2005-07-06 | 吴霖秀 | High efficiency aliphatic sulfonate water reducing agent and method for preparing same |
| CN101531479A (en) * | 2009-04-03 | 2009-09-16 | 南京瑞迪高新技术公司 | Method for preparing low cost aliphatic high efficiency water reducing agent |
| CN101575186A (en) * | 2009-05-11 | 2009-11-11 | 江苏鼎达建材有限公司 | Aliphatic concrete water reducing agent and preparation process thereof |
| CN101624269A (en) * | 2009-08-03 | 2010-01-13 | 常州汇迪建材有限公司 | Aliphatic series high-efficiency water reducing agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101845131A (en) | 2010-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104193211B (en) | Sprayed concrete is with exempting from heating alkali-free liquid accelerator and its preparation method | |
| CN103992443B (en) | The method that room temperature batch mixing method prepares polycarboxylate water-reducer | |
| CN102515610B (en) | Aliphatic series high efficiency water reducing agent and preparation method thereof | |
| CN104371076A (en) | Method of synthesizing polycarboxylate superplasticizer at normal temperature | |
| CN102173644A (en) | Pea protein concrete foaming agent and preparation method thereof | |
| CN101845131B (en) | Preparation method of high-efficiency water reducing agent | |
| CN105694524A (en) | Preparation method of acid black 172 | |
| CN101717480B (en) | Preparing method of heating-free aliphatic superplasticizer admixture | |
| CN107827408A (en) | A kind of preparation method of the anti-cracking heat insulation mortar of modified fibre modified pitch doping | |
| CN103626573B (en) | Water-retention coated nitrogen phosphorus potassium compound fertilizer and preparation method thereof | |
| CN105712865A (en) | Solid aluminum citrate cross-linking agent, and preparation method and application thereof | |
| CN103360554A (en) | Synthesizing method of high-performance water reducing agent | |
| CN103288375B (en) | Concrete additive and preparation method thereof | |
| CN103922385B (en) | A kind of preparation method of cerium oxide hexagonal nanosheet shape structure | |
| CN103964730B (en) | The method of heat-conducting oil heating synthetic fluid accelerating chemicals | |
| CN105314916A (en) | Sulfamate water reducer and preparation method therefor | |
| CN104556210A (en) | Method for preparing Sm2Sn2O7/SnO2 nano composite by microwave-assisted solvothermal two-step process | |
| CN101660173B (en) | Method for preparing silver nitrate solution for silver electrolysis and device thereof | |
| CN105985054A (en) | Efficient water reducing agent for improving frost resistance and dispersibility of concrete | |
| CN104496248A (en) | Preparation method of water reducer for concrete | |
| CN106517952B (en) | A kind of shrinkage-free wet-mixing thermal insulation mortar of p-doped slag and preparation method | |
| CN103833070B (en) | A kind of method reducing lead content in tin protochloride | |
| CN102910880A (en) | Light chemical foaming cement material and preparation method thereof | |
| CN108046838A (en) | A kind of foamed bricks and preparation method thereof | |
| CN104071812A (en) | Preparation method for magnesium hydroxide nanoparticle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20140521 |