CN103011657A - Preparation method of aliphatic superplasticizer - Google Patents
Preparation method of aliphatic superplasticizer Download PDFInfo
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- CN103011657A CN103011657A CN2011102951544A CN201110295154A CN103011657A CN 103011657 A CN103011657 A CN 103011657A CN 2011102951544 A CN2011102951544 A CN 2011102951544A CN 201110295154 A CN201110295154 A CN 201110295154A CN 103011657 A CN103011657 A CN 103011657A
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Abstract
The invention discloses a preparation method of an aliphatic superplasticizer. The product belongs to the field of chemical industry. The product disclosed by the invention takes industrial sodium pyrosulfite, novel environment-friendly formaldehyde of which the content is 40%, industrial acetone, 40% sodium hydroxide aqueous solution and water as materials to produce the aliphatic superplasticizer. The preparation method has the advantages that the production method is simple in production technology, short in time, low in price of used materials, relatively low in synthesis cost, free of sediment and free of crystallization; the price is lower than that of a polycarboxylic water reducer; the water-reducing rate is higher than that of a naphthalene water reducer; the effect of the concrete in the aspect of plasticizing enhancement is equivalent to those of naphthalene and melamine superplasticizers; the water-reducing rate is high after use; the heightening effect is good; the water supply volume is reduced; the water cement ratio is reduced; the dosage of the cement is saved, and the physical and mechanical properties of the concrete can be improved.
Description
Technical field
Product of the present invention belongs to the chemical building material field, relates in particular to a kind of preparation method of aliphatic high-efficiency water reducing agent.
Background technology
Water reducer refers under concrete workability and cement consumption permanence condition, can reduce the mixing water amount, improves concrete strength or under workability and intensity permanence condition, save the admixture of cement consumption.Aliphatic high-efficiency water reducing agent is the burnt aldehyde of the synthetic carbonyl of acetone sulfonation, the hydrophobic group main chain is aliphatic hydrocarbon, it is a kind of green high-efficient water reducer, outward appearance is henna liquid, solids content＞35%, proportion 1.15-1.2, major advantage is: water-reducing rate is high, water-reducing rate can reach 15-25%, can save cement consumption 25-30%; Morning is strong, reinforced effects is obvious, and concrete mixes aliphatic high-efficiency water reducing agent, can reach the 60-70% of design strength in 3 days, can reach 100%, 30 day and improve 30-40% than blank concrete strength in 6 days; Extensive to the cement suitability, good with other kinds admixture compatibility; Can significantly improve concrete freeze-thaw-, impervious, resisting erosion of sulfate; Aliphatic high-efficiency water reducing agent is nontoxic, do not fire, non-corrosive steel muscle, winter be without sulfate crystal; Also can with naphthalene water reducer, amino water reducer, polycarboxylate water-reducer compound use.The present invention is a kind of aliphatic high-efficiency water reducing agent, produce aliphatic high-efficiency water reducing agent as 40% novel environment friendly formaldehyde, technical grade acetone, 40% aqueous sodium hydroxide solution, water as raw material take technical grade Sodium Pyrosulfite, content, wherein the technical grade Sodium Pyrosulfite is main raw material.Because of the aliphatic high-efficiency water reducing agent production technique more, this preparation method's advantage is: production technique is simple, time is short, cheap, the synthetic cost of the prices of raw and semifnished materials of using is relatively low, price is lower than poly carboxylic acid series water reducer, water-reducing rate is higher than naphthalene water reducer, without precipitation, without crystallization, and its effect and naphthalene to concrete plasticizing enhancing aspect is, the melamine series high-efficiency water-reducing agent is suitable, water-reducing rate is high after using, reinforced effects good, reduce water consumption, reduce water cement ratio, save cement consumption, can improve concrete physical and mechanical property.
Summary of the invention
The problem to be solved in the present invention provides the method that a kind of batch prepares aliphatic high-efficiency water reducing agent, this water reducer is take the technical grade Sodium Pyrosulfite as main raw material, with technical grade acetone, novel environment friendly formaldehyde, sodium hydroxide is that auxiliary material is produced aliphatic high-efficiency water reducing agent, this preparation method's advantage is: production technique is simple, time is short, the prices of raw and semifnished materials of using are cheap, synthetic cost is relatively low, price is lower than poly carboxylic acid series water reducer, water-reducing rate is higher than naphthalene water reducer, without precipitation, without crystallization, and it is to effect and the naphthalene system of concrete plasticizing enhancing aspect, the melamine series high-efficiency water-reducing agent is suitable, and water-reducing rate is high after using, reinforced effects is good.Producing the raw material that this product uses has: technical grade Sodium Pyrosulfite 20%-22%, content are that 38% novel environment friendly formaldehyde 34%, technical grade acetone 14%-16%, content are 40% aqueous sodium hydroxide solution 10%, water 20%.
The present invention can be achieved through the following technical solutions:
A kind of preparation method of aliphatic high-efficiency water reducing agent, its feature is made of following steps:
1. water is sent into chemical reaction kettle, begin to stir, while stirring the technical grade Sodium Pyrosulfite is added reactor to all dissolvings, add first content and be 40% aqueous sodium hydroxide solution, add half content of formula ratio after 15 minutes and be 38% novel environment friendly formaldehyde, stir.
2. improve slowly about temperature to 60 ℃, continue to stir, with second half content be 38% novel environment friendly formaldehyde first and technical grade acetone even blend, add reactor, stirring reaction 0.5 hour is increased to temperature about 100 ℃, and the restir reaction obtained finished product in 1.2 hours.
The invention has the beneficial effects as follows: the preparation method that a kind of aliphatic high-efficiency water reducing agent is provided, this preparation method's technique is simple, production time is short, cheap, the synthetic cost of the prices of raw and semifnished materials of using is relatively low, price is lower than poly carboxylic acid series water reducer, water-reducing rate is higher than naphthalene water reducer, without precipitation, without crystallization, and its effect and naphthalene to concrete plasticizing enhancing aspect is, the melamine series high-efficiency water-reducing agent is suitable, water-reducing rate is high after using, reinforced effects good, save cement consumption, can improve concrete physical and mechanical property.
Embodiment
Embodiment 1
Be that 20% water is sent into chemical reaction kettle with accounting for total amount, begin to stir, to account for while stirring total amount and be 20% technical grade Sodium Pyrosulfite and add reactor to all dissolvings, add first that to account for total amount be that 10% content is 40% aqueous sodium hydroxide solution, add after 15 minutes that to account for total amount be that 17% content is 38% novel environment friendly formaldehyde, stir; Improve slowly about temperature to 60 ℃, continue to stir, with account for total amount be 17% content be 38% novel environment friendly formaldehyde first and to account for total amount be 16% technical grade acetone even blend, add reactor, stirring reaction 0.5 hour, temperature is increased to about 100 ℃, and the restir reaction obtained finished product in 1.2 hours.
Embodiment 2
Be that 20% water is sent into chemical reaction kettle with accounting for total amount, begin to stir, to account for while stirring total amount and be 21% technical grade Sodium Pyrosulfite and add reactor to all dissolvings, add first that to account for total amount be that 10% content is 40% aqueous sodium hydroxide solution, add after 15 minutes that to account for total amount be that 17% content is 38% novel environment friendly formaldehyde, stir; Improve slowly about temperature to 60 ℃, continue to stir, with account for total amount be 17% content be 38% novel environment friendly formaldehyde first and to account for total amount be 15% technical grade acetone even blend, add reactor, stirring reaction 0.5 hour, temperature is increased to about 100 ℃, and the restir reaction obtained finished product in 1.2 hours.
Embodiment 3
Be that 20% water is sent into chemical reaction kettle with accounting for total amount, begin to stir, to account for while stirring total amount and be 22% technical grade Sodium Pyrosulfite and add reactor to all dissolvings, add first that to account for total amount be that 10% content is 40% aqueous sodium hydroxide solution, add after 15 minutes that to account for total amount be that 17% content is 38% novel environment friendly formaldehyde, stir; Improve slowly about temperature to 60 ℃, continue to stir, with account for total amount be 17% content be 38% novel environment friendly formaldehyde first and to account for total amount be 14% technical grade acetone even blend, add reactor, stirring reaction 0.5 hour, temperature is increased to about 100 ℃, and the restir reaction obtained finished product in 1.2 hours.
Claims (3)
1. the preparation method of an aliphatic high-efficiency water reducing agent, it is characterized in that: take novel environment friendly formaldehyde 34% as 38% of technical grade Sodium Pyrosulfite 20%-22%, content, technical grade acetone 14%-16%, content as 40% aqueous sodium hydroxide solution 10%, water 20% as raw material, obtain finished product by following steps.
2. the preparation method of a kind of aliphatic high-efficiency water reducing agent according to claim 1, the feature of its first step is: water is sent into chemical reaction kettle, begin to stir, while stirring the technical grade Sodium Pyrosulfite is added reactor to all dissolvings, add first content and be 40% aqueous sodium hydroxide solution, add half content of formula ratio after 15 minutes and be 38% novel environment friendly formaldehyde, stir.
3. the preparation method of a kind of aliphatic high-efficiency water reducing agent according to claim 1, the feature of its second step is: improve slowly about temperature to 60 ℃, continue to stir, with second half content be 38% novel environment friendly formaldehyde first and technical grade acetone even blend, add reactor, stirring reaction 0.5 hour is increased to temperature about 100 ℃, and the restir reaction obtained finished product in 1.2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102951544A CN103011657A (en) | 2011-09-28 | 2011-09-28 | Preparation method of aliphatic superplasticizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102951544A CN103011657A (en) | 2011-09-28 | 2011-09-28 | Preparation method of aliphatic superplasticizer |
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| CN103011657A true CN103011657A (en) | 2013-04-03 |
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| CN2011102951544A Pending CN103011657A (en) | 2011-09-28 | 2011-09-28 | Preparation method of aliphatic superplasticizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386942A (en) * | 2014-10-28 | 2015-03-04 | 淮南天泉建材有限公司 | Fly ash concrete treating agent and preparation methods thereof |
| CN108395136A (en) * | 2018-05-18 | 2018-08-14 | 萧县沃德化工科技有限公司 | A kind of preparation method of aliphatic modified polycarboxylate water-reducer |
| CN112608058A (en) * | 2020-12-03 | 2021-04-06 | 科之杰新材料集团浙江有限公司 | Concrete micro-foaming agent and preparation method thereof |
-
2011
- 2011-09-28 CN CN2011102951544A patent/CN103011657A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386942A (en) * | 2014-10-28 | 2015-03-04 | 淮南天泉建材有限公司 | Fly ash concrete treating agent and preparation methods thereof |
| CN108395136A (en) * | 2018-05-18 | 2018-08-14 | 萧县沃德化工科技有限公司 | A kind of preparation method of aliphatic modified polycarboxylate water-reducer |
| CN112608058A (en) * | 2020-12-03 | 2021-04-06 | 科之杰新材料集团浙江有限公司 | Concrete micro-foaming agent and preparation method thereof |
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Application publication date: 20130403 |