CN110845174A - Polycarboxylate superplasticizer with high water reducing rate and low cost and preparation method thereof - Google Patents
Polycarboxylate superplasticizer with high water reducing rate and low cost and preparation method thereof Download PDFInfo
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- CN110845174A CN110845174A CN201910727988.4A CN201910727988A CN110845174A CN 110845174 A CN110845174 A CN 110845174A CN 201910727988 A CN201910727988 A CN 201910727988A CN 110845174 A CN110845174 A CN 110845174A
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- deionized water
- low cost
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a polycarboxylate superplasticizer with high water reducing rate and low cost and a preparation method thereof, wherein the polycarboxylate superplasticizer with high water reducing rate and low cost comprises the following raw materials in parts by weight: 3548 parts of base material, 652.5 parts of material A, 830 parts of material B and 650 parts of water supplement. The polycarboxylic acid water reducing agent prepared by the invention has the advantages of simple preparation method, lower cost and convenient operation, is beneficial to large-scale industrial production, has high water reducing effect, has a dispersing effect on cement particles after being added into concrete mixture, can improve the workability, reduce the unit water consumption, improve the fluidity of the concrete mixture and improve the quality and the actual using effect of the concrete.
Description
Technical Field
The invention relates to the technical field of preparation of polycarboxylic acid water reducing agents, in particular to a polycarboxylic acid water reducing agent with high water reducing rate and low cost and a synthesis method thereof.
Background
The water reducing agent is a concrete admixture capable of reducing the water consumption for mixing under the condition of maintaining the slump constant of concrete basically. Most of them are anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer. After the concrete mixture is added, the dispersion effect on cement particles is achieved, the workability of the concrete mixture can be improved, the unit water consumption is reduced, and the fluidity of the concrete mixture is improved; or the unit cement consumption is reduced, and the cement is saved.
The water reducing agent in the existing market has low water reducing rate, complex preparation process and high preparation cost, so that the requirements of users cannot be met.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a polycarboxylic acid water reducing agent with high water reducing rate and low cost and a synthesis method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme: a polycarboxylate superplasticizer with high water reducing rate and low cost comprises the following raw materials in parts by weight: 3548 parts of base material, 652.5 parts of material A, 830 parts of material B and 650 parts of water supplement.
As a further description of the above technical solution:
the base material consists of 608 (60% liquid), deionized water and hydrogen peroxide, and the content ratio of the 608 (60% liquid), the deionized water and the hydrogen peroxide is 238:14:1, wherein 27.5%.
As a further description of the above technical solution:
according to the hydrogen peroxide chemical formula H2O2, pure hydrogen peroxide is light blue viscous liquid, can be mixed with water in any proportion, is a strong oxidant, the aqueous solution is commonly called hydrogen peroxide, is colorless transparent liquid, and the concentration of the hydrogen peroxide is 27.5%.
As a further description of the above technical solution:
the material A consists of Vc, J32 (mercaptol) and deionized water, and the content ratio of Vc, J32 (mercaptol) and deionized water is 1: 1.5:160.
As a further description of the above technical solution:
the material B consists of acrylic acid and deionized water, the content ratio of the acrylic acid to the deionized water is 1:2.32, and the acrylic acid is an important organic synthetic raw material and a synthetic resin monomer and is an ethylene monomer with a very high polymerization speed. Is the simplest unsaturated carboxylic acid, consisting of one vinyl group and one carboxyl group. Pure acrylic acid is a colorless clear liquid with a characteristic pungent odor.
As a further description of the above technical solution:
the deionized water is pure water with impurities in the form of ions removed, is mainly prepared by an RO reverse osmosis method, and is used for removing anions and cations in the water by using ion exchange resin.
A synthetic method of a polycarboxylate superplasticizer with high water reducing rate and low cost comprises the following steps:
(1) weighing the raw materials in parts by weight; (ii) a
(2) Adding weighed bottom materials, namely 608 (60% solution), deionized water and hydrogen peroxide, into a reaction kettle, opening a stirrer in the reaction kettle, stirring and mixing, heating to 45 ℃ after complete mixing, keeping the temperature, and starting stirring;
(3) preparing A, B materials, firstly weighing Vc, J32 (mercaptol) and deionized water according to a proportion, adding the deionized water, Vc and J32 (mercaptol) into a first mixing and stirring tank for fully mixing and stirring to obtain A material; firstly, weighing acrylic acid and deionized water according to a proportion, and adding the deionized water and the acrylic acid into a second mixing and stirring tank for full mixing and stirring to obtain a material B;
(3): opening a manual valve for the material B, and putting 240kg of the material B into the reaction kettle to be added into the bottom material prepared in the step (2);
(4): and (4) after finishing the step (3) for five minutes, dropwise adding the material A and the material B into the reaction kettle, and controlling the material A: dropwise adding for 3.5 hours, and adding a material B: dropwise addition was carried out for 3 hours.
(5): keeping the temperature for one hour, taking the semi-finished product mother liquor for detection, and supplementing water according to the requirements of a process department according to the detection result.
As a further description of the above technical solution:
the reaction kettle used in the step (2) is a chemical reaction kettle, and a heater and a stirrer are arranged in the chemical reaction kettle.
As a further description of the above technical solution:
the water used in the whole production process is deionized water.
Advantageous effects
The invention provides a polycarboxylic acid water reducing agent with high water reducing rate and low cost and a synthesis method thereof. The method has the following beneficial effects:
the polycarboxylate superplasticizer with high water reducing rate and low cost and the polycarboxylate superplasticizer prepared by the synthesis method are simple in synthesis method, low in cost, convenient to operate and beneficial to large-scale industrial production, and the prepared polycarboxylate superplasticizer has a high water reducing effect, has a dispersing effect on cement particles after being added into a concrete mixture, can improve the workability, reduce the unit water consumption, improve the fluidity of the concrete mixture and improve the quality and the actual using effect of concrete.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
A polycarboxylate superplasticizer with high water reducing rate and low cost comprises the following raw materials in parts by weight: 3548 parts of base material, 652.5 parts of material A, 830 parts of material B and 650 parts of water supplement.
The base material consists of 608 (60% liquid), deionized water and hydrogen peroxide, and the content ratio of the 608 (60% liquid), the deionized water and the hydrogen peroxide is 238:14: 1.
The hydrogen peroxide is of a chemical formula H2O2, pure hydrogen peroxide is light blue viscous liquid, can be mixed with water in any proportion, and is a strong oxidant, an aqueous solution is commonly called hydrogen peroxide and is colorless transparent liquid, and the concentration of the hydrogen peroxide is 27.5%.
The material A consists of Vc, J32 (mercaptol) and deionized water, and the content ratio of Vc, J32 (mercaptol) and deionized water is 1: 1.5:160.
The material B consists of acrylic acid and deionized water, the content ratio of the acrylic acid to the deionized water is 1:2.32, and the acrylic acid is an important organic synthetic raw material and a synthetic resin monomer and is an ethylene monomer with a very high polymerization speed. Is the simplest unsaturated carboxylic acid, consisting of one vinyl group and one carboxyl group. Pure acrylic acid is a colorless clear liquid with a characteristic pungent odor.
Deionized water refers to pure water from which impurities in the form of ions are removed, and is mainly prepared by an RO reverse osmosis method, and anion and cation in water are removed by using ion exchange resin.
A synthetic method of a polycarboxylate superplasticizer with high water reducing rate and low cost comprises the following steps:
(1) weighing the raw materials in parts by weight; (ii) a
(2) Adding weighed bottom materials, namely 608 (60% solution), deionized water and hydrogen peroxide, into a reaction kettle, opening a stirrer in the reaction kettle, stirring and mixing, heating to 45 ℃ after complete mixing, keeping the temperature, and starting stirring;
(3) preparing A, B materials, firstly weighing Vc, J32 (mercaptol) and deionized water according to a proportion, adding the deionized water, Vc and J32 (mercaptol) into a first mixing and stirring tank for fully mixing and stirring to obtain A material; firstly, weighing acrylic acid and deionized water according to a proportion, and adding the deionized water and the acrylic acid into a second mixing and stirring tank for full mixing and stirring to obtain a material B;
(3): opening a manual valve for the material B, and putting 240kg of the material B into the reaction kettle to be added into the bottom material prepared in the step (2);
(4): and (4) after finishing the step (3) for five minutes, dropwise adding the material A and the material B into the reaction kettle, and controlling the material A: dropwise adding for 3.5 hours, and adding a material B: dropwise addition was carried out for 3 hours.
(5): keeping the temperature for one hour, taking the semi-finished product mother liquor for detection, and supplementing water according to the requirements of a process department according to the detection result.
The reaction kettle used in the step (2) is a chemical reaction kettle, a heater and a stirrer are arranged in the chemical reaction kettle, and water used in the whole production process is deionized water.
The polycarboxylic acid water reducing agent prepared by the invention has the advantages of simple synthesis method, lower cost and convenient operation, is beneficial to large-scale industrial production, has very high water reducing effect, has a dispersing effect on cement particles after being added into concrete mixture, can improve the workability, reduce the unit water consumption, improve the fluidity of the concrete mixture and improve the quality and the actual using effect of the concrete.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The polycarboxylate superplasticizer with high water reducing rate and low cost is characterized by comprising the following raw materials in parts by weight: 3548 parts of base material, 652.5 parts of material A, 830 parts of material B and 650 parts of water supplement.
2. The polycarboxylate superplasticizer with high water reducing rate and low cost as claimed in claim 1, wherein said base material comprises 608 (60% liquid), deionized water and hydrogen peroxide, and the content ratio of 608 (60% liquid), deionized water and 27.5% hydrogen peroxide is 238:14: 1.
3. The polycarboxylate superplasticizer with high water reduction rate and low cost as claimed in claim 2, wherein the hydrogen peroxide has a chemical formula of H2O2, pure hydrogen peroxide is light blue viscous liquid, can be mixed and dissolved with water at any proportion, is a strong oxidant, the aqueous solution is commonly called hydrogen peroxide, is colorless transparent liquid, and the concentration of the hydrogen peroxide is 27.5%.
4. The polycarboxylate superplasticizer with high water reducing rate and low cost as claimed in claim 1, wherein said material A is composed of Vc, J32 (mercaptol) and deionized water, and the content ratio of Vc, J32 (mercaptol) and deionized water is 1: 1.5:160.
5. The polycarboxylate superplasticizer with high water reducing rate and low cost according to claim 1, wherein the material B comprises acrylic acid and deionized water, the content ratio of the acrylic acid to the deionized water is 1:2.32, and the acrylic acid is an important organic synthetic raw material and a synthetic resin monomer, and is an ethylene monomer with very high polymerization speed. Is the simplest unsaturated carboxylic acid, consisting of one vinyl group and one carboxyl group. Pure acrylic acid is a colorless clear liquid with a characteristic pungent odor.
6. The polycarboxylate superplasticizer with high water reducing rate and low cost as claimed in claim 2, wherein said deionized water is pure water from which impurities in the form of ions have been removed, and is prepared mainly by RO reverse osmosis, and anion and cation in water are removed by using ion exchange resin.
7. A synthetic method of a polycarboxylate superplasticizer with high water reducing rate and low cost is characterized by comprising the following steps:
(1) weighing the raw materials in parts by weight; (ii) a
(2) Adding weighed bottom materials, namely 608 (60% solution), deionized water and hydrogen peroxide, into a reaction kettle, opening a stirrer in the reaction kettle, stirring and mixing, heating to 45 ℃ after complete mixing, keeping the temperature, and starting stirring;
(3) preparing A, B materials, firstly weighing Vc, J32 (mercaptol) and deionized water according to a proportion, adding the deionized water, Vc and J32 (mercaptol) into a first mixing and stirring tank for fully mixing and stirring to obtain A material; firstly, weighing acrylic acid and deionized water according to a proportion, and adding the deionized water and the acrylic acid into a second mixing and stirring tank for full mixing and stirring to obtain a material B;
(3): opening a manual valve for the material B, and putting 240kg of the material B into the reaction kettle to be added into the bottom material prepared in the step (2);
(4): and (4) after finishing the step (3) for five minutes, dropwise adding the material A and the material B into the reaction kettle, and controlling the material A: dropwise adding for 3.5 hours, and adding a material B: dropwise addition was carried out for 3 hours.
(5): keeping the temperature for one hour, taking the semi-finished product mother liquor for detection, and supplementing water according to the requirements of a process department according to the detection result.
8. The method for synthesizing the polycarboxylate superplasticizer with high water reducing rate and low cost according to claim 7, wherein the reaction kettle used in the step (2) is a chemical reaction kettle, and a heater and a stirrer are arranged inside the chemical reaction kettle.
9. The method for synthesizing the polycarboxylate superplasticizer with high water reducing rate and low cost according to claim 7, wherein the water used in the whole production process is deionized water.
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| CN201910727988.4A CN110845174A (en) | 2019-08-08 | 2019-08-08 | Polycarboxylate superplasticizer with high water reducing rate and low cost and preparation method thereof |
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| CN201910727988.4A CN110845174A (en) | 2019-08-08 | 2019-08-08 | Polycarboxylate superplasticizer with high water reducing rate and low cost and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028527A (en) * | 2020-08-12 | 2020-12-04 | 河北合众建材有限公司 | High-adaptability polycarboxylic acid high-performance water reducing agent and preparation method thereof |
| CN113024152A (en) * | 2021-04-02 | 2021-06-25 | 上海通原环保科技有限公司 | Quick-drying and quick-setting type cement water reducing agent composition |
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| CN108676131A (en) * | 2018-06-06 | 2018-10-19 | 淮北旭日建材有限公司 | A kind of high-performance polycarboxylic acids water reducing agent and preparation method thereof |
| CN109608594A (en) * | 2018-12-13 | 2019-04-12 | 广东奥克化学有限公司 | A kind of Early-strength polycarboxylate superplasticizer and preparation method thereof |
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Patent Citations (5)
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| JP2004256321A (en) * | 2003-02-24 | 2004-09-16 | Kao Corp | Admixture for hydraulic composition |
| CN107325235A (en) * | 2017-07-14 | 2017-11-07 | 贵州禹华建材科技有限公司 | One kind protects the sustained-release polycarboxylic water reducer normal temperature synthesis technique that collapses |
| CN108676131A (en) * | 2018-06-06 | 2018-10-19 | 淮北旭日建材有限公司 | A kind of high-performance polycarboxylic acids water reducing agent and preparation method thereof |
| CN109608594A (en) * | 2018-12-13 | 2019-04-12 | 广东奥克化学有限公司 | A kind of Early-strength polycarboxylate superplasticizer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112028527A (en) * | 2020-08-12 | 2020-12-04 | 河北合众建材有限公司 | High-adaptability polycarboxylic acid high-performance water reducing agent and preparation method thereof |
| CN113024152A (en) * | 2021-04-02 | 2021-06-25 | 上海通原环保科技有限公司 | Quick-drying and quick-setting type cement water reducing agent composition |
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