CN103819624A - Styrene modified polysulfonate water reducing agent - Google Patents
Styrene modified polysulfonate water reducing agent Download PDFInfo
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- CN103819624A CN103819624A CN201410090121.XA CN201410090121A CN103819624A CN 103819624 A CN103819624 A CN 103819624A CN 201410090121 A CN201410090121 A CN 201410090121A CN 103819624 A CN103819624 A CN 103819624A
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- water reducer
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Abstract
The invention discloses a styrene modified polysulfonate water reducing agent. Styrene is sulfonated, modified and subjected to polymerization synthesis, and the water reducing agent is low in cost, high in adaptive capacity and good in water reducing effect; gradual loss and weepage phenomena are absent during neat paste flow; and a water reducing rate of concrete generally can be up to about 24% and is higher than that of a common sulfamic acid water reducing agent.
Description
Technical field
The present invention relates to a kind of sulphonic acids water reducer, specifically a kind of phenylethene modified poly-sulphonic acids water reducer.
Background technology
Along with the development and popularizing that extensive concrete mixing plant, concrete mixing and transporting car, Concrete Pumping Construction equipment are applied of architectural engineering technology, greatly promote the development of concrete admixture technology.Modern concrete is towards the future development of high-performance, greenization, and the requirement of water-reducing rate, slump retaining and the feature of environmental protection to concrete admixture is more and more higher.
Domestic research and production and the high efficiency water reducing agent being widely used, mainly contain following several according to its chemical composition classification: modified lignosulfonate high-efficiency water reducing agent, naphthalene series high-efficiency water-reducing agent, melamine resin series high-efficiency water-reducing agent, Amino-sulfonic Acid-based Water-reducer, polycarboxylate high-efficiency water reducing agent.The effect of summarizing high efficiency water reducing agent has following three aspects: (1), in the situation that keeping mixture water cement ratio constant, improves its serviceability; (2) keeping under the constant prerequisite of workability, mixing water reducer and can make concrete unit consumption of water reduce 5%-25%, improving concrete strength 5%-30%; (3) keeping under the prerequisite that concrete strength is constant, using water reducer can reduce the 5%-20% of cement consumption.In a word, it has produced huge economic benefit and social benefit to the effect final body of water reducer now.
According to data, amido sulfoacid series high-efficiency water reducer has the high dispersion to cement particle, and water-reducing rate is high, and has the function of control slump loss; And cost is not high, and production technique is simple, it is domestic and international the most rising current high efficiency water reducing agent.But the water-reducing rate of aminosulfonic water-reducing agent conventionally also can only reach 20% in the time of volume 1.0%, water-reducing rate is not high, and there will be excreting water phenomenon.
Summary of the invention
For the object of inventing is to provide a kind of phenylethene modified sulphonic acids water reducer, by vinylbenzene sulfonation modifying, again through the synthetic water reducer molecule of polymerization, this type of water reducer cost is low, adaptable, and water-reducing effect is good.
Technical scheme of the present invention is achieved in that phenylethene modified poly-sulphonic acids water reducer, and vinylbenzene sulfonation modifying is synthetic through polymerization again, and reaction equation is:
It is synthetic that water reducer is raw materials used is:
A methacrylic polyoxyethylenated alcohol
B vinylbenzene
C maleic anhydride
D oleum
E vinylformic acid or methacrylic acid
F ammonium persulphate or Potassium Persulphate
G sodium hydroxide solution;
The mol ratio of described raw material is: a:b:c:d:e:g=1:2～2.5:2～2.5:3.5～4.5:1～1.5:5.5～6.5, the consumption of f is 0.5～1.0% of a, b, c, d and e gross weight.
The concrete synthesis step of water reducer is as follows: by b, and c, d adds reactor successively, stirs and is warming up to 80-90 degree, stirs insulation 4 hours.Be cooled to below 40 degree, add suitable quantity of water and a to add reactor, g is slowly added to reactor, control reactor temperature 60-70 degree, e is dissolved in to suitable quantity of water as dripping material 1, f is dissolved in to suitable quantity of water as dripping material 2, two kinds of dropping liquids evenly drip simultaneously in reactor, all added with 3 hours, and continue to keep 60-70 degree 1 hour, reaction finishes.
The optimum ratio of raw material is: a:b:c:d:e:g=1: 2: 2: 4:1:6.
The concentration of described dropping liquid 1 is 30～50% massfractions.
The concentration of described dropping liquid 2 is 5～10% massfractions.
Beneficial effect of the present invention is: phenylethene modified poly-sulphonic acids water reducer of the present invention, and vinylbenzene sulfonation modifying is synthetic through polymerization again, and this type of water reducer cost is low, adaptable, and water-reducing effect is good.Clean slurry flow without through time loss, without excreting water phenomenon.Concrete water-reducing rate generally can reach 24% left and right, higher than common aminosulfonic water-reducing agent.
Embodiment
Below in conjunction with specific embodiment, the present invention is further explained to explanation.
Embodiment 1
It is synthetic that water reducer is raw materials used is:
A methacrylic polyoxyethylenated alcohol
B vinylbenzene
C maleic anhydride
D oleum
E vinylformic acid or methacrylic acid
F ammonium persulphate or Potassium Persulphate
G sodium hydroxide solution;
The mol ratio of described raw material is: a:b:c:d:e:g=1:2.5:2.5:3.5:1.5:5.5, the consumption of f is 0.8% of a, b, c, d and e gross weight.
The concrete synthesis step of water reducer is as follows: by b, and c, d adds reactor successively, stirs and is warming up to 80-90 degree, stirs insulation 4 hours.Be cooled to below 40 degree, add suitable quantity of water and a to add reactor, g is slowly added to reactor, control reactor temperature 60-70 degree, e is dissolved in to suitable quantity of water as dripping material 1, f is dissolved in to suitable quantity of water as dripping material 2, two kinds of dropping liquids evenly drip simultaneously in reactor, all added with 3 hours, and continue to keep 60-70 degree 1 hour, reaction finishes.
Embodiment 2
Synthesis step is with embodiment 1.And the mol ratio of described raw material is: a:b:c:d:e:g=1:2.3:2.3:4.5:1.2:5.5, the consumption of f is 0.6% of a, b, c, d and e gross weight.
Embodiment 3
Synthesis step is with embodiment 1.And the mol ratio of described raw material is: a:b:c:d:e:g=1:2:2: 4:1:6, the consumption of f is 1.0% of a, b, c, d and e gross weight.
The water reducer of embodiment 1,2 and 3 (solids content is 20%) is mixed in cement or concrete and measures flowing degree of net paste of cement and water-reducing rate, see the following form.
As seen from table, clean slurry flow without through time loss, without excreting water phenomenon.Concrete water-reducing rate generally can reach 24% left and right, higher than common aminosulfonic water-reducing agent.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (7)
1. phenylethene modified poly-sulphonic acids water reducer, is characterized in that, vinylbenzene sulfonation modifying is synthetic through polymerization again, and reaction equation is:
。
2. phenylethene modified poly-sulphonic acids water reducer according to claim 1, is characterized in that, is raw materials usedly:
A methacrylic polyoxyethylenated alcohol
B vinylbenzene
C maleic anhydride
D oleum
E vinylformic acid or methacrylic acid
F ammonium persulphate or Potassium Persulphate
G sodium hydroxide solution;
The mol ratio of described raw material is: a:b:c:d:e:g=1:2～2.5:2～2.5:3.5～4.5:1～1.5:5.5～6.5, the consumption of f is 0.5～1.0% of a, b, c, d and e gross weight.
3. phenylethene modified poly-sulphonic acids water reducer according to claim 2, is characterized in that, described synthetic method step is as follows: by b, and c, d adds reactor successively, stirs and is warming up to 80-90 degree, stirs insulation 4 hours.
4. be cooled to below 40 degree, add suitable quantity of water and a to add reactor, g is slowly added to reactor, control reactor temperature 60-70 degree, e is dissolved in to suitable quantity of water as dripping material 1, f is dissolved in to suitable quantity of water as dripping material 2, two kinds of dropping liquids evenly drip simultaneously in reactor, all added with 3 hours, and continue to keep 60-70 degree 1 hour, reaction finishes.
5. phenylethene modified poly-sulphonic acids water reducer according to claim 1, is characterized in that, the mol ratio of described raw material is: a:b:c:d:e:g=1: 2: 2: 4:1:6.
6. phenylethene modified poly-sulphonic acids water reducer according to claim 1, is characterized in that, the concentration of described dropping liquid 1 is 30～50% massfractions.
7. phenylethene modified poly-sulphonic acids water reducer according to claim 1, is characterized in that, the concentration of described dropping liquid 2 is 5～10% massfractions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090121.XA CN103819624B (en) | 2014-03-13 | 2014-03-13 | Phenylethene modified polysulfonate acids water reducer |
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|---|---|---|---|
| CN201410090121.XA CN103819624B (en) | 2014-03-13 | 2014-03-13 | Phenylethene modified polysulfonate acids water reducer |
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| CN103819624A true CN103819624A (en) | 2014-05-28 |
| CN103819624B CN103819624B (en) | 2016-12-07 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343642A (en) * | 2000-08-11 | 2002-04-10 | 株式会社日本触媒 | Cement dispersant agent and cement compsn. using same |
| CN1412145A (en) * | 2001-10-17 | 2003-04-23 | 株式会社日本触媒 | Cement dispersing agent, its mfg. method and cement composition using it |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343642A (en) * | 2000-08-11 | 2002-04-10 | 株式会社日本触媒 | Cement dispersant agent and cement compsn. using same |
| CN1412145A (en) * | 2001-10-17 | 2003-04-23 | 株式会社日本触媒 | Cement dispersing agent, its mfg. method and cement composition using it |
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| CN103819624B (en) | 2016-12-07 |
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