CN102584094A - Polycarboxylic acid slump retaining agent for concrete and preparation method thereof - Google Patents
Polycarboxylic acid slump retaining agent for concrete and preparation method thereof Download PDFInfo
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- CN102584094A CN102584094A CN2012100623696A CN201210062369A CN102584094A CN 102584094 A CN102584094 A CN 102584094A CN 2012100623696 A CN2012100623696 A CN 2012100623696A CN 201210062369 A CN201210062369 A CN 201210062369A CN 102584094 A CN102584094 A CN 102584094A
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Abstract
The invention relates to a polycarboxylic acid slump retaining agent for concrete and a preparation method thereof, belonging to the technical field of concrete slump retaining agents. The polycarboxylic acid slump retaining agent for concrete comprises the following components in percentage by weight: 20-50% of polyoxypropylene ether, 25-60% of water, 3-5% of hydrogen peroxide, 10-15% of acrylic acid, 2-3% of mercapto acid and 1-2% of ascorbic acid. The preparation method comprises the following technological steps of: (1) adding polyoxypropylene ether and water into a reaction container, dissolving polyoxypropylene ether in water under the condition of stirring, and adjusting the pH value to 4-6 by using acrylic acid; (2) adding hydrogen peroxide into the reaction container, and dissolving hydrogen peroxide through stirring; (3) dissolving the rest acrylic acid, mercapto acid and ascorbic acid in water, and adding the solution into the reaction container in 3-5 hours; (4) reacting and maintaining the temperature for 1-2 hours; and (5) adjusting the pH value to 6-7 by using sodium hydroxide, and adding water to dilute to obtain the polycarboxylic acid slump retaining agent for concrete. The polycarboxylic acid slump retaining agent for concrete has good adaptability to cement and has the advantages of high plasticizing property, water-reducing rate, environmental protection, stable quality, reliable technology, high production efficiency, convenience for industrial production and the like.
Description
Technical field
The invention belongs to the concrete slump retaining agent technical field, particularly relate to a kind of concrete with poly carboxylic acid slump retaining agent and preparation method thereof.
Background technology
At present, existing poly carboxylic acid slump retaining agent does not have water-reducing rate, and protect plasticity can be very unstable, and when concrete was transported to the building site, too big or anti-of loss of slump was very big, causes the concrete workability variation, can stop up during pumping and don't manage, and incurs loss through delay construction speed.Need in the production process to use a large amount of organic solvents, environmental pollution is serious.Existing poly carboxylic acid slump retaining agent exists quality unstable in the concrete use, influences technical problems such as concrete construction.
Summary of the invention
The present invention provides a kind of concrete with poly carboxylic acid slump retaining agent and preparation method thereof for solving the problem that prior art exists.
One of the object of the invention is to carry that arch is a kind of to have high guarantor and mould, and water-reducing rate is arranged, and environment-friendly type is easy to use, handling ease, and constant product quality, the concrete of characteristics such as production efficiency height is used the poly carboxylic acid slump retaining agent.
Ph value, the increase xitix of the present invention through regulating the polyethenoxy ether aqueous solution, the stability of raising product makes product have stable protect plasticity, and has water-reducing rate.
Concrete of the present invention adopts following technical scheme with the poly carboxylic acid slump retaining agent:
A kind of concrete is used the poly carboxylic acid slump retaining agent, is characterized in: the weight percent of each component of poly carboxylic acid slump retaining agent does,
Two of the object of the invention provides that a kind of to have technology reliable, easy to operate, simple, constant product quality, and high guarantor moulded, and is convenient to the preparation method of the concrete of characteristics such as suitability for industrialized production with the poly carboxylic acid slump retaining agent.
Concrete of the present invention adopts following technical scheme with the preparation method of poly carboxylic acid slump retaining agent:
A kind of concrete is characterized in the preparation method of poly carboxylic acid slump retaining agent: preparation comprises that the following technology step gathers,
(1) polyethenoxy ether and water are added reaction vessel, under agitation condition, make polyethenoxy ether water-soluble, regulate the ph value to 4-6 with vinylformic acid;
(2) ydrogen peroxide 50 is added in the reaction vessel, stir and make the ydrogen peroxide 50 dissolving;
(3) acid of remaining vinylformic acid, mercapto, xitix is soluble in water, joined in the reaction vessel with 3-5 hour;
(4) the reaction insulation is 1-2 hour;
(5) regulate the ph value to 6-7 with sodium hydroxide, thin up obtains concrete and uses the poly carboxylic acid slump retaining agent.
Concrete of the present invention can also adopt following technical measures with the preparation method of poly carboxylic acid slump retaining agent:
Described concrete is characterized in the preparation method of poly carboxylic acid slump retaining agent: preparation comprises that the following technology step gathers,
(1) with behind polyethenoxy ether and the water adding reaction vessel, under agitation condition, controlled temperature 60-80 ℃ makes polyethenoxy ether water-soluble;
(2) ydrogen peroxide 50 is added reaction vessel after, stir and made ydrogen peroxide 50 dissolving in 10-20 minute;
(3) with the acid of remaining vinylformic acid, mercapto, xitix soluble in water after, be added drop-wise in the reaction vessel with 3-5 hour;
(4) the reaction insulation is 1-2 hour;
(5) regulate the ph value to 6-7 with sodium hydroxide, thin up obtains concrete and uses the poly carboxylic acid slump retaining agent.
Advantage that the present invention has and positively effect:
Concrete owing to adopt brand-new technology scheme of the present invention, therefore, has following distinguishing feature with poly carboxylic acid slump retaining agent and preparation method thereof:
1. product has stable plastic property and has water-reducing rate;
2. speed of reaction is fast, save energy, and the finished product transformation efficiency is high;
3. the adjusting starting ph makes product performance stable, and does not increase acrylic acid consumption;
4. through improving temperature of reaction and adding xitix, improve the efficient of initiator, reduce initiator amount, stabilized product quality;
5. do not use any organic solvent, and do not discharge any waste water, waste gas in the production process, belong to the environment friendly green product.
The present invention is good to cement adaptability, has high guarantor and moulds, and water-reducing rate, product environmental protection, easy to use are arranged, steady quality, and technology is reliable, and is easy to operate, simple, and production efficiency is high, is convenient to advantages such as suitability for industrialized production.
Embodiment
For further understanding technology contents of the present invention, characteristics and effect, enumerate following instance now, and specify as follows:
Embodiment 1
A kind of concrete is used the poly carboxylic acid slump retaining agent, and the weight percent of its each component is:
Embodiment 2
A kind of concrete is with the preparation method of poly carboxylic acid slump retaining agent, and its preparation comprises that the following technology step gathers:
1. 40g polyethenoxy ether and 10g water are added reaction vessel, be warmed up to 60 ℃ and make polyethenoxy ether water-soluble.Regulate the ph value between 4-6 with vinylformic acid.
2. join the 3g ydrogen peroxide 50 in the reaction kettle, stirred 10-20 minute, ydrogen peroxide 50 is fully dissolved.
3. remaining vinylformic acid (amounting to 10g) and the acid of 2g mercapto, 1g xitix are dissolved in the less water, within 3-5 hour, are added drop-wise in the reaction vessel.
4. after dripping, be incubated 1-2 hour.
5. regulate ph value (6-7) with sodium hydroxide, thin up to 40% had both obtained concrete and had used the poly carboxylic acid slump retaining agent.
Embodiment 3
A kind of concrete is with the preparation method of poly carboxylic acid slump retaining agent, and its preparation comprises that the following technology step gathers:
1. 50g polyethenoxy ether and 20g water are added reaction vessel, be warmed up to 80 ℃ and make polyethenoxy ether water-soluble.Regulate the ph value between 4-6 with vinylformic acid.
2. join the 5g ydrogen peroxide 50 in the reaction vessel, stirred 10-20 minute, ydrogen peroxide 50 is fully dissolved.
3. remaining vinylformic acid (amounting to 15g) and the acid of 3g mercapto, 2g xitix are dissolved in the less water, within 3-5 hour, are added drop-wise in the reaction vessel.
4. after dripping, be incubated 1-2 hour.
5. regulate ph value (6-7) with sodium hydroxide, thin up to 40% had both obtained concrete and had used the poly carboxylic acid slump retaining agent.
Claims (3)
1. a concrete is used the poly carboxylic acid slump retaining agent, it is characterized in that: the weight percent of each component of poly carboxylic acid slump retaining agent does,
2. concrete according to claim 1 is characterized in that with the preparation method of poly carboxylic acid slump retaining agent: preparation comprises that the following technology step gathers,
(1) polyethenoxy ether and water are added reaction vessel, under agitation condition, make polyethenoxy ether water-soluble, regulate the ph value to 4-6 with vinylformic acid;
(2) ydrogen peroxide 50 is added in the reaction vessel, stir and make the ydrogen peroxide 50 dissolving;
(3) acid of remaining vinylformic acid, mercapto, xitix is soluble in water, joined in the reaction vessel with 3-5 hour;
(4) the reaction insulation is 1-2 hour;
(5) regulate the ph value to 6-7 with sodium hydroxide, thin up obtains concrete and uses the poly carboxylic acid slump retaining agent.
3. concrete according to claim 2 is characterized in that with the preparation method of poly carboxylic acid slump retaining agent: preparation comprises that the following technology step gathers,
(1) with behind polyethenoxy ether and the water adding reaction vessel, under agitation condition, controlled temperature 60-80 ℃ makes polyethenoxy ether water-soluble;
(2) ydrogen peroxide 50 is added reaction vessel after, stir and made ydrogen peroxide 50 dissolving in 10-20 minute;
(3) with the acid of remaining vinylformic acid, mercapto, xitix soluble in water after, be added drop-wise in the reaction vessel with 3-5 hour;
(4) the reaction insulation is 1-2 hour;
(5) regulate the ph value to 6-7 with sodium hydroxide, thin up obtains concrete and uses the poly carboxylic acid slump retaining agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210062369 CN102584094B (en) | 2012-03-09 | 2012-03-09 | Polycarboxylic acid slump retaining agent for concrete and preparation method thereof |
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| CN 201210062369 CN102584094B (en) | 2012-03-09 | 2012-03-09 | Polycarboxylic acid slump retaining agent for concrete and preparation method thereof |
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| CN102584094A true CN102584094A (en) | 2012-07-18 |
| CN102584094B CN102584094B (en) | 2013-11-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724560A (en) * | 2013-12-31 | 2014-04-16 | 大连市铭源全科技开发有限公司 | Super-strong slump retaining agent and processing method thereof |
| CN103739789A (en) * | 2013-12-31 | 2014-04-23 | 大连市铭源全科技开发有限公司 | Simple synthesis method for polycarboxylic acid water reducer |
| CN103755886A (en) * | 2013-12-31 | 2014-04-30 | 大连市铭源全科技开发有限公司 | Super-high early-strength water reducing agent and processing method thereof |
| CN103819628A (en) * | 2013-12-31 | 2014-05-28 | 大连市铭源全科技开发有限公司 | Water reducing agent with concrete workability adjusting function and synthetic method thereof |
| CN106519141A (en) * | 2016-11-15 | 2017-03-22 | 湖北工业大学 | Polycarboxylic acid slump retaining agent master batch with broad molecular weight distribution and high adaptability |
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| CN101928114A (en) * | 2010-08-30 | 2010-12-29 | 大连建科北方化学有限公司 | High water reduction high collapse protection type polycarboxylate high-performance water reducer and pyrogen-free preparation method thereof |
| CN102030494A (en) * | 2010-11-12 | 2011-04-27 | 河北金舵建材科技开发有限公司 | High-performance polycarboxylate water reducing agent and low-temperature one-step preparation method thereof |
| CN102140018A (en) * | 2010-11-24 | 2011-08-03 | 辽宁奥克化学股份有限公司 | Concrete polycarboxylate water reducer and preparation method thereof |
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2012
- 2012-03-09 CN CN 201210062369 patent/CN102584094B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101928114A (en) * | 2010-08-30 | 2010-12-29 | 大连建科北方化学有限公司 | High water reduction high collapse protection type polycarboxylate high-performance water reducer and pyrogen-free preparation method thereof |
| CN102030494A (en) * | 2010-11-12 | 2011-04-27 | 河北金舵建材科技开发有限公司 | High-performance polycarboxylate water reducing agent and low-temperature one-step preparation method thereof |
| CN102140018A (en) * | 2010-11-24 | 2011-08-03 | 辽宁奥克化学股份有限公司 | Concrete polycarboxylate water reducer and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103724560A (en) * | 2013-12-31 | 2014-04-16 | 大连市铭源全科技开发有限公司 | Super-strong slump retaining agent and processing method thereof |
| CN103739789A (en) * | 2013-12-31 | 2014-04-23 | 大连市铭源全科技开发有限公司 | Simple synthesis method for polycarboxylic acid water reducer |
| CN103755886A (en) * | 2013-12-31 | 2014-04-30 | 大连市铭源全科技开发有限公司 | Super-high early-strength water reducing agent and processing method thereof |
| CN103819628A (en) * | 2013-12-31 | 2014-05-28 | 大连市铭源全科技开发有限公司 | Water reducing agent with concrete workability adjusting function and synthetic method thereof |
| CN103724560B (en) * | 2013-12-31 | 2016-04-13 | 大连市铭源全科技开发有限公司 | A kind of superpower slump retaining agent and working method thereof |
| CN103755886B (en) * | 2013-12-31 | 2016-05-11 | 大连市铭源全科技开发有限公司 | A kind of ultra early-strength water reducer and processing method thereof |
| CN103819628B (en) * | 2013-12-31 | 2016-08-17 | 大连市铭源全科技开发有限公司 | A kind of water reducer with concrete workability regulatory function and synthetic method thereof |
| CN106519141A (en) * | 2016-11-15 | 2017-03-22 | 湖北工业大学 | Polycarboxylic acid slump retaining agent master batch with broad molecular weight distribution and high adaptability |
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| CN102584094B (en) | 2013-11-06 |
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Effective date of registration: 20180305 Address after: 300162 Tianjin Dongli District Dongli Lake Wanke city education complex science and technology building 202-1 room Patentee after: Tianjin Shiji Tianyuan Group Co., Ltd. Address before: 300300 Xinli street, Dongli District, Tianjin City, three villages Patentee before: Tianjin Nuode Building Materials Co., Ltd. |