CN103159425A - Synthesis method of modified naphthalene water-reducing agent - Google Patents
Synthesis method of modified naphthalene water-reducing agent Download PDFInfo
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- CN103159425A CN103159425A CN2013100923854A CN201310092385A CN103159425A CN 103159425 A CN103159425 A CN 103159425A CN 2013100923854 A CN2013100923854 A CN 2013100923854A CN 201310092385 A CN201310092385 A CN 201310092385A CN 103159425 A CN103159425 A CN 103159425A
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- naphthalene
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- water reducer
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Abstract
The invention discloses a synthesis method of a modified naphthalene water-reducing agent, which comprises the following steps: reacting naphthalene, concentrated sulfuric acid and phenol; and condensing in formaldehyde to produce sodium naphthalene sulfonate/phenol condensate. The water-reducing agent overcomes the defects of the existing product, and has the advantages of reducing the doping amount of the water-reducing agent, reducing the water consumption, increasing the concrete slump, enhancing the concrete strength and durability, etc.
Description
Technical field
The present invention relates to a kind of synthetic method of modification naphthalene water reducer, belong to the water reducer field.
Background technology
DiminishingAgent refers to
ConcreteWorkability reaches
CementUnder the consumption permanence condition, can reduce the mixing water amount, improve concrete strength; Or under workability and intensity permanence condition, the saving cement consumption
AdmixtureAccording to the requirement of GBSO76.1997, high efficiency water reducing agent refers to that water-reducing rate is at the water reducer more than 10%.High efficiency water reducing agent is improved, the effects such as concrete construction performance, reduce water cement ratio, the concrete intensity of raising and weather resistance, saving cement, minimizing concrete initial imperfection.The high efficiency water reducing agent kind is a lot, and according to chemical composition classification mainly contains five kinds: modified lignosulfonate high-efficiency water reducing agent, naphthalene series high-efficiency water-reducing agent (condensed-nuclei aromatics sulfonate and formaldehyde condensation compound, naphthalene sulphonate formaldehyde condensation compound), melamine resin series high-efficiency water-reducing agent (melamine sulfonate and formaldehyde condensation compound), Amino-sulfonic Acid-based Water-reducer, polycarboxylate high-efficiency water-reducing agent.
The shortcomings such as existing water reducer has diminishing low, and gassiness is high, and time of coagulation is long the invention provides a kind of synthetic method of modification naphthalene water reducer, have effectively solved above problem.
Summary of the invention
For solving the problem of prior art existence, the invention provides a kind of synthetic method of modification naphthalene water reducer of sodium naphthalene sulfonate phenol condenses.
The present invention is achieved by the following technical solutions:
A kind of synthetic method of modification naphthalene water reducer comprises the following steps:
(1) naphthalene, the vitriol oil are put in reactor, be heated to carry out sulfonation reaction under 140～160 ℃, after 1.5～2 hours, slowly add phenol in reactor, be warming up to 160～180 ℃, react that the liquid acid number is 24～32 o'clock stopped heatings to the reactor, naturally cooling;
(2) when reactor temperature is cooled to 100～130 ℃, formaldehyde is slowly added in material after sulfonation carry out condensation reaction, the reaction times is 4～6 hours;
(3) alkali lye is added in above-mentioned condensation material and carries out neutralization reaction, react to PH be 8～11 o'clock be terminal point, drying and packaging, and get final product.
The synthetic method of described modification naphthalene water reducer is characterized in that the quality group of each component becomes:
Naphthalene 250～300
The vitriol oil 300～420
Phenol 100～180
Formaldehyde 180～230
Alkali lye 500～580.
The synthetic method of described modification naphthalene water reducer is characterized in that alkali lye used is 30% calcium carbonate soln.
The present invention has the following advantages:
The invention discloses a kind of synthetic method of modification naphthalene water reducer, have in the incorporation that reduces water reducer, reduce water consumption, increased the cement slump, improve the advantages such as concrete intensity and weather resistance.
Embodiment
The synthetic method of 1 one kinds of modification naphthalene water reducers of embodiment comprises the following steps:
(1) 300 parts of naphthalenes, 400 parts of vitriol oils are put in reactor, be heated to carry out sulfonation reaction under 150 ℃, after 2 hours, slowly add 180 parts of phenol in reactor, be warming up to 180 ℃, react that the liquid acid number is 25～27 o'clock stopped heatings to the reactor, naturally cooling;
(2) when reactor temperature is cooled to 120 ℃, 220 parts of formaldehyde are slowly added in material after sulfonation carry out condensation reaction, the reaction times is 5 hours;
(3) 550 part of 30% calcium carbonate soln added in above-mentioned condensation material carry out neutralization reaction, react to PH be 10 o'clock be terminal point, drying and packaging, and get final product.
Following table is the partial properties contrast by the water reducer of the water reducer of this novel process production and old explained hereafter.
The synthetic method of 2 one kinds of modification naphthalene water reducers of embodiment comprises the following steps:
(1) 250 parts of naphthalenes, 350 parts of vitriol oils are put in reactor, be heated to carry out sulfonation reaction under 150 ℃, after 2 hours, slowly add 140 parts of phenol in reactor, be warming up to 180 ℃, react that the liquid acid number is 25～27 o'clock stopped heatings to the reactor, naturally cooling;
(2) when reactor temperature is cooled to 120 ℃, 200 parts of formaldehyde are slowly added in material after sulfonation carry out condensation reaction, the reaction times is 5 hours;
(3) 500 part of 30% calcium carbonate soln added in above-mentioned condensation material carry out neutralization reaction, react to PH be 10 o'clock be terminal point, drying and packaging, and get final product.
Following table is the partial properties contrast by the water reducer of the water reducer of this novel process production and old explained hereafter.
Claims (3)
1. the synthetic method of a modification naphthalene water reducer is characterized in that comprising the following steps:
(1) naphthalene, the vitriol oil are put in reactor, be heated to carry out sulfonation reaction under 140 ~ 160 ℃, after 1.5 ~ 2 hours, slowly add phenol in reactor, be warming up to 160 ~ 180 ℃, react that the liquid acid number is 24 ~ 32 o'clock stopped heatings to the reactor, naturally cooling;
(2) when reactor temperature is cooled to 100 ~ 130 ℃, formaldehyde is slowly added in material after sulfonation carry out condensation reaction, the reaction times is 4 ~ 6 hours;
(3) alkali lye is added in above-mentioned condensation material and carries out neutralization reaction, react to PH be 8 ~ 11 o'clock be terminal point, drying and packaging, and get final product.
2. the synthetic method of modification naphthalene water reducer according to claim 1 is characterized in that the quality group of each component becomes:
Naphthalene 250 ~ 300
The vitriol oil 300 ~ 420
Phenol 100 ~ 180
Formaldehyde 180 ~ 230
Alkali lye 500 ~ 580.
3. the synthetic method of modification naphthalene water reducer according to claim 1, is characterized in that alkali lye used is 30% calcium carbonate soln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013100923854A CN103159425A (en) | 2013-03-21 | 2013-03-21 | Synthesis method of modified naphthalene water-reducing agent |
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| CN2013100923854A CN103159425A (en) | 2013-03-21 | 2013-03-21 | Synthesis method of modified naphthalene water-reducing agent |
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| CN103159425A true CN103159425A (en) | 2013-06-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236798A (en) * | 2014-12-26 | 2016-01-13 | 上虞吉龙化学建材有限公司 | Preparation method of naphthalene-series water reducing agent |
| CN105271887A (en) * | 2015-10-20 | 2016-01-27 | 江苏苏博特新材料股份有限公司 | Slump-retaining modified naphthalene water reducer and preparation method thereof |
| CN110452346A (en) * | 2019-07-16 | 2019-11-15 | 江苏博思通新材料有限公司 | A kind of water reducing agent for rare earth concrete for building |
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| CN101054273A (en) * | 2006-12-06 | 2007-10-17 | 攀钢集团钢城企业总公司 | Method of producing naphthalene series water reducing agent by refined naphthalene residual oil fraction |
| CN101497506A (en) * | 2009-03-20 | 2009-08-05 | 武汉市联合石油化工有限责任公司 | Process for preparing modified naphthalene series water reducing agent |
| CN101723860A (en) * | 2009-12-08 | 2010-06-09 | 上虞吉龙化学建材有限公司 | Method for preparing naphthalene series water reducing agent |
| CN102585132A (en) * | 2012-03-06 | 2012-07-18 | 章雪芬 | Method for utilizing industrial phenolic aldehyde waste water |
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2013
- 2013-03-21 CN CN2013100923854A patent/CN103159425A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054273A (en) * | 2006-12-06 | 2007-10-17 | 攀钢集团钢城企业总公司 | Method of producing naphthalene series water reducing agent by refined naphthalene residual oil fraction |
| CN101497506A (en) * | 2009-03-20 | 2009-08-05 | 武汉市联合石油化工有限责任公司 | Process for preparing modified naphthalene series water reducing agent |
| CN101723860A (en) * | 2009-12-08 | 2010-06-09 | 上虞吉龙化学建材有限公司 | Method for preparing naphthalene series water reducing agent |
| CN102585132A (en) * | 2012-03-06 | 2012-07-18 | 章雪芬 | Method for utilizing industrial phenolic aldehyde waste water |
Non-Patent Citations (1)
| Title |
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| 李洋: "苯酚改性萘系减水剂", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236798A (en) * | 2014-12-26 | 2016-01-13 | 上虞吉龙化学建材有限公司 | Preparation method of naphthalene-series water reducing agent |
| CN105236798B (en) * | 2014-12-26 | 2017-10-20 | 浙江吉盛化学建材有限公司 | A kind of preparation method of naphthalene water reducer |
| CN105271887A (en) * | 2015-10-20 | 2016-01-27 | 江苏苏博特新材料股份有限公司 | Slump-retaining modified naphthalene water reducer and preparation method thereof |
| CN110452346A (en) * | 2019-07-16 | 2019-11-15 | 江苏博思通新材料有限公司 | A kind of water reducing agent for rare earth concrete for building |
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Application publication date: 20130619 |