CN104817658A - Acrylic acid water reducing agent and preparation method thereof - Google Patents
Acrylic acid water reducing agent and preparation method thereof Download PDFInfo
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- CN104817658A CN104817658A CN201510263577.6A CN201510263577A CN104817658A CN 104817658 A CN104817658 A CN 104817658A CN 201510263577 A CN201510263577 A CN 201510263577A CN 104817658 A CN104817658 A CN 104817658A
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Abstract
The invention discloses an acrylic acid water reducing agent. The acrylic acid water reducing agent comprises the following components: acrylic acid, acrylamide aqueous solution, thioglycollic acid, sodium hydroxide, 2,2-azo bis(2-amino dipropenyl) hydrochloride and water, wherein the mass concentration of the acrylamide aqueous solution is 50%, the molecular weight of water reducing agent provided by the invention is 8000-70000; based on the mass of cement, the addition amount of the water reducing agent is 0.05-1%; the water reducing agent is very suitable for manufacturing cement pipes.
Description
Technical field
The invention belongs to field of fine chemical, be specifically related to a kind of acrylic type water reducer.
Background technology
Water reducer is a kind of maintaining under the constant condition of concrete slump, can reduce the concrete admixture of mixing water amount.Mostly belong to anion surfactant, have sulfonated lignin, naphthalene sulphonate formaldehyde polymkeric substance etc.There is dissemination to cement granules after adding concrete mix, its workability can be improved, reduce unit consumption of water, improve the mobility of concrete mix; Or minimizing unit cement consumption, save cement.
Water reducer according to chemical composition forms and is usually divided into: lignin sulfonate water reducer class, naphthalene series high-efficiency water-reducing agent class, melamine superplasticizer class, Amino-sulfonic Acid-based Water-reducer class, fatty acid series height water reducer class, polycarboxylate high-efficiency water-reducing agent class.
Wherein naphthalene series high-efficiency water-reducing agent is that China uses the earliest, be naphthalene by sulfuric acid sulfonation, then carry out the product of condensation with formaldehyde, belong to aniorfic surfactant.Such water reducer outward appearance can in light yellow to auburn powder depending on the difference of product, and soluble in water, good to many powder body material disseminations such as cement, water-reducing rate reaches 25%.
But the water reducer of naphthalene series has impact to slump etc., so people start to develop the water reducer of oleic series.
Summary of the invention
Goal of the invention: for naphthalene water reducer Problems existing in prior art, the invention provides a kind of acrylic type water reducer.
Technical scheme: the invention provides a kind of acrylic type water reducer, it comprises following component: vinylformic acid, acrylamide solution, thioglycollic acid, sodium hydroxide, two (amino two propylene of the 2-) hydrochloride of 2,2-azos and water.The mass concentration of described acrylamide solution is 50%.
Concrete, according to the mass fraction, each component proportion is: two (amino two propylene of the 2-) hydrochloride 0.05 ~ 0.1 part of 15 ~ 18 parts, vinylformic acid, acrylamide solution 29 ~ 30 parts, thioglycollic acid 1.3 ~ 1.5 parts, 27 ~ 30 parts, sodium hydroxide, 2,2-azos and 27 ~ 30 parts, water.
Preferred, the present invention according to the mass fraction, each component proportion is: two (amino two propylene of the 2-) hydrochloride 0.05 part of 15 parts, vinylformic acid, acrylamide solution 30 parts, thioglycollic acid 1.3 parts, 27 parts, sodium hydroxide, 2,2-azos and 27 parts, water.
Present invention also offers the preparation method of aforesaid propylene acid type water reducer, its concrete steps are:
Vinylformic acid is mixed with water, adds aqueous sodium hydroxide solution, then add acrylamide soln and thioglycollic acid, uniform dissolution, add 2,2-azo two (amino two propylene of 2-) hydrochloride, import nitrogen, temperature of reaction 40 DEG C ~ 70 DEG C, reaction times 2 ~ 4h, obtains product.
Beneficial effect: the molecular weight of water reducer provided by the present invention is 8000 ~ 70000, and with cementaceous gauge, addition is 0.05 ~ 1%, is best suited for manufacture materials used for cement pipes.
Embodiment:
Embodiment 1
15g vinylformic acid is mixed with 25g water, under water cooling condition, slowly adds aqueous sodium hydroxide solution, then add 29g acrylamide soln and 1.3g thioglycollic acid, uniform dissolution.Add 0.06g2,2-azo two (amino two propylene of 2-) hydrochloride, imports nitrogen, adjusts the temperature to 40 DEG C.Be warmed up to 70 DEG C after 20 min, insulation 2h, carries out polyreaction.After cooling, resulting polymers molecular weight about 65000.
Embodiment 2
18g vinylformic acid is mixed with 30g water, under water cooling condition, slowly adds aqueous sodium hydroxide solution, then add 30g acrylamide soln and 1.3g thioglycollic acid, uniform dissolution.Add 0.06g2,2-azo two (amino two propylene of 2-) hydrochloride, imports nitrogen, adjusts the temperature to 40 DEG C.Be warmed up to 70 DEG C after 20 min, insulation 2h, carries out polyreaction.After cooling, resulting polymers molecular weight about 67000.
Embodiment 3
15g vinylformic acid is mixed with 30g water, under water cooling condition, slowly adds aqueous sodium hydroxide solution, then add 29g acrylamide soln and 1.4g thioglycollic acid, uniform dissolution.Add 0.06g2,2-azo two (amino two propylene of 2-) hydrochloride, imports nitrogen, adjusts the temperature to 40 DEG C.Be warmed up to 70 DEG C after 20 min, insulation 2h, carries out polyreaction.After cooling, resulting polymers molecular weight about 66000.
Embodiment 4
15.12g vinylformic acid is mixed with 25.72g water, under water cooling condition, slowly adds aqueous sodium hydroxide solution, then add 29.77g acrylamide soln and 1.37g thioglycollic acid, uniform dissolution.Add 0.06g2,2-azo two (amino two propylene of 2-) hydrochloride, imports nitrogen, adjusts the temperature to 40 DEG C.Be warmed up to 70 DEG C after 20 min, insulation 2h, carries out polyreaction.After cooling, resulting polymers molecular weight about 70000.
Above-mentioned water reducer is used for cement manufacture, and the addition of this water reducer is 0.1% of cement, and water is 35% of cement, and fine sand is 38.8% of aggregate quality.
Claims (4)
1. an acrylic type water reducer, is characterized in that comprising following component: vinylformic acid, acrylamide solution, thioglycollic acid, sodium hydroxide, two (amino two propylene of the 2-) hydrochloride of 2,2-azos and water.
2. acrylic type water reducer as claimed in claim 1, it is characterized in that according to the mass fraction, each component proportion is: two (amino two propylene of the 2-) hydrochloride 0.05 ~ 0.1 part of 15 ~ 18 parts, vinylformic acid, acrylamide solution 29 ~ 30 parts, thioglycollic acid 1.3 ~ 1.5 parts, 27 ~ 30 parts, sodium hydroxide, 2,2-azos and 27 ~ 30 parts, water.
3. acrylic type water reducer as claimed in claim 1, is characterized in that the mass concentration of described acrylamide solution is 50%.
4. the preparation method of acrylic type water reducer as claimed in claim 1, it is characterized in that: vinylformic acid is mixed with water, add aqueous sodium hydroxide solution, then add acrylamide soln and thioglycollic acid, uniform dissolution, add 2,2-azo two (amino two propylene of 2-) hydrochloride, imports nitrogen, temperature of reaction 40 DEG C ~ 70 DEG C, reaction times 2 ~ 4h, obtains product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510263577.6A CN104817658A (en) | 2015-05-21 | 2015-05-21 | Acrylic acid water reducing agent and preparation method thereof |
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| CN201510263577.6A CN104817658A (en) | 2015-05-21 | 2015-05-21 | Acrylic acid water reducing agent and preparation method thereof |
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| CN104817658A true CN104817658A (en) | 2015-08-05 |
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| CN201510263577.6A Pending CN104817658A (en) | 2015-05-21 | 2015-05-21 | Acrylic acid water reducing agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383274A (en) * | 2017-09-16 | 2017-11-24 | 刘翠芬 | Long-acting concrete water-loss reducer and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| JPH09241640A (en) * | 1996-03-13 | 1997-09-16 | Fujisawa Pharmaceut Co Ltd | Water-reducing agent for soil |
| CN101333092A (en) * | 2007-06-25 | 2008-12-31 | 深圳市海川实业股份有限公司 | Cement concrete superplasticizer and method for preparing same |
| CN102358774A (en) * | 2011-07-28 | 2012-02-22 | 郑州展浩化工技术有限公司 | Preparation method of polycarboxylic acid high-efficiency water reducer |
| CN102358763A (en) * | 2011-07-21 | 2012-02-22 | 北京工业大学 | Method for preparing additive for inhibiting side effect of clay |
| CN103396028A (en) * | 2013-08-09 | 2013-11-20 | 长沙加美乐素化工有限公司 | High-early-strength polycarboxylate water reducer and preparation method thereof |
-
2015
- 2015-05-21 CN CN201510263577.6A patent/CN104817658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09241640A (en) * | 1996-03-13 | 1997-09-16 | Fujisawa Pharmaceut Co Ltd | Water-reducing agent for soil |
| CN101333092A (en) * | 2007-06-25 | 2008-12-31 | 深圳市海川实业股份有限公司 | Cement concrete superplasticizer and method for preparing same |
| CN102358763A (en) * | 2011-07-21 | 2012-02-22 | 北京工业大学 | Method for preparing additive for inhibiting side effect of clay |
| CN102358774A (en) * | 2011-07-28 | 2012-02-22 | 郑州展浩化工技术有限公司 | Preparation method of polycarboxylic acid high-efficiency water reducer |
| CN103396028A (en) * | 2013-08-09 | 2013-11-20 | 长沙加美乐素化工有限公司 | High-early-strength polycarboxylate water reducer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 来胜利: "《常用精细化工产品研制与生产》", 31 October 2006, 陕西科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383274A (en) * | 2017-09-16 | 2017-11-24 | 刘翠芬 | Long-acting concrete water-loss reducer and preparation method thereof |
| CN107383274B (en) * | 2017-09-16 | 2019-11-01 | 石家庄市长安育才建材有限公司 | Long-acting concrete water-retaining agent and preparation method thereof |
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Application publication date: 20150805 |