CN111518240A - Preparation method of concrete synergist containing amide group - Google Patents
Preparation method of concrete synergist containing amide group Download PDFInfo
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- CN111518240A CN111518240A CN202010284278.1A CN202010284278A CN111518240A CN 111518240 A CN111518240 A CN 111518240A CN 202010284278 A CN202010284278 A CN 202010284278A CN 111518240 A CN111518240 A CN 111518240A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
- C08F230/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2652—Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
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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
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a preparation method of an amide group-containing concrete synergist, which comprises the following steps: (1) adding tea saponin and phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 3-6 hours after the temperature is raised to 133-150 ℃; (2) adding an acrylamide monomer into a reaction tank, uniformly stirring, and then beginning to dropwise add an initiator solution with the mass percentage concentration of 1-10%, wherein the initiator solution is prepared from the initiator and water, the dropwise adding time is controlled to be 3.5-5 hours, and the temperature is controlled to be 92-100 ℃ during dropwise adding; (3) and after the dropwise adding is finished, adding inorganic base and the rest water, continuing to react for 2-4 hours, cooling and discharging to obtain the concrete synergist.
Description
The application is the Chinese patent application number: 201810625127.0, filing date: 6 and 17 in 2018, with patent names: a concrete synergist containing amide groups and a divisional application of a preparation method thereof.
Technical Field
The invention belongs to the field of fine chemical engineering, and particularly relates to a preparation method of a concrete synergist containing an amide group.
Background
Concrete is currently the largest and most widely used material worldwide because of its many advantages. Research data shows that about 20-30% of cement in concrete does not participate in hydration reaction in the conventional environment, only plays a role in filling fine aggregates, cannot effectively exert the strength of the cement, and causes great waste of resources. On the other hand, different water reducing agents have different influence mechanisms on cement adsorption and the like, so that the water reducing agents hardly play a role in concrete after being added to a certain degree, and the economical efficiency and the workability are difficult to guarantee. How to develop a new concrete admixture to solve the problems, the surplus cement is saved, and the basic performance and strength of the concrete can be guaranteed, thereby having very important practical significance for concrete enterprises.
The concrete synergist is used for stimulating the action of each unit of cement molecule to the maximum extent and stimulating the performance of the water reducing agent by improving the dispersion degree of cement particles and mineral fine aggregates. The cement particles are more dispersed, so that the hydration action of the cement is more sufficient, namely most of the cement particles are fully mixed and stirred with water, sand, stone and the like, and then can be fully contacted with other materials (such as a water reducing agent) around the cement particles and react, so that the comprehensive performance of the concrete is enhanced, and the original cement consumption in the concrete is saved.
The invention provides a concrete synergist containing an amide group. The concrete synergist is a novel concrete admixture, can reduce the cement consumption of the concrete with medium and low strength grades, can ensure the workability, the strength and the durability of the concrete, and has wide application prospect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of a concrete synergist containing an amido group, the concrete synergist is a novel concrete admixture, and for the concrete with medium and low strength grade, the concrete synergist can reduce the using amount of cement, can ensure the workability, strength and durability, and has wide application prospect.
In order to achieve the purpose, the invention adopts the following technical scheme:
the concrete synergist containing the amide group is mainly prepared from the following raw materials in parts by weight:
the acrylamide monomer is a mixture of one or more than two of acrylamide, hydroxymethyl acrylamide, dimethylacrylamide, dimethylaminopropyl acrylamide and dimethylaminopropyl methacrylamide in any ratio.
The initiator is one or a mixture of more than two of sodium persulfate, potassium persulfate and ammonium persulfate which are mixed according to any ratio.
The inorganic base is one or a mixture of more than two of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate mixed in any ratio.
A preparation method of concrete synergist containing amide groups is characterized by comprising the following steps: the method is realized by the following steps:
(1) adding tea saponin and phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 3-6 hours after heating to 120-150 ℃;
(2) adding an acrylamide monomer into a reaction tank, uniformly stirring, and then beginning to dropwise add an initiator solution with the mass percentage concentration of 1-10%, wherein the initiator solution is prepared from the initiator and part of the water, the dropwise adding time is controlled to be 3-5 hours, and the temperature is controlled to be 90-100 ℃ during dropwise adding;
(3) and after the dropwise adding is finished, adding inorganic base and the rest water, continuing to react for 1-4 hours, cooling and discharging to obtain the concrete synergist.
Compared with the prior art, the invention has the following remarkable effects:
1. tea saponin is taken as a basic raw material, and is subjected to esterification reaction with phosphoric acid and polymerization with acrylamide monomers to introduce amide groups, so that the performance of the product is improved.
2. The product is non-toxic and harmless, is not limited by seasons and regions in use, and is convenient to transport and store; the product has simple production process and mild conditions, the feeding and the conditions in the production process are easy to control, and the whole process has no three wastes, thus being a green, environment-friendly, pollution-free and clean production process.
Detailed Description
The present invention is further illustrated in detail by the following examples.
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the acrylamide monomer is a mixture of one or more than two of acrylamide, hydroxymethyl acrylamide, dimethylacrylamide, dimethylaminopropyl acrylamide and dimethylaminopropyl methacrylamide in any ratio.
The initiator is one or a mixture of more than two of sodium persulfate, potassium persulfate and ammonium persulfate which are mixed according to any ratio.
The inorganic base is one or a mixture of more than two of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate mixed in any ratio.
The invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding tea saponin and phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 3-6 hours after heating to 120-150 ℃;
(2) adding an acrylamide monomer into a reaction tank, uniformly stirring, and then beginning to dropwise add an initiator solution with the mass percentage concentration of 1-10%, wherein the initiator solution is prepared from the initiator and part of the water, the dropwise adding time is controlled to be 3-5 hours, and the temperature is controlled to be 90-100 ℃ during dropwise adding;
(3) and after the dropwise adding is finished, adding inorganic base and the rest water, continuing to react for 1-4 hours, cooling and discharging to obtain the concrete synergist.
The present invention will be described in detail with reference to specific examples, but the present invention is not limited thereto.
Example 1
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding 26 parts of tea saponin and 10 parts of phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 3.5 hours after the temperature is raised to 125 ℃;
(2) adding 8 parts of acrylamide into a reaction tank, uniformly stirring, and then beginning to dropwise add a sodium persulfate solution with the mass percentage concentration of 2%, wherein the sodium persulfate solution is prepared from 0.1 part of sodium persulfate and 4.9 parts of water, the dropwise adding time is controlled to be 3.5 hours, and the temperature is controlled to be 91 ℃ during dropwise adding;
(3) and after the dropwise adding, adding 9 parts of sodium hydroxide and 42 parts of water, continuing to react for 2 hours, cooling and discharging to obtain the concrete synergist.
Example 2
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding 29 parts of tea saponin and 6 parts of phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 4 hours after the temperature is raised to 133 ℃;
(2) then 6 parts of hydroxymethyl acrylamide is added into the reaction tank, after uniform stirring, a sodium persulfate solution with the mass percentage concentration of 6% is dripped, the sodium persulfate solution is prepared from 0.3 part of sodium persulfate and 4.7 parts of water, the dripping time is controlled to be 3.5 hours, and the temperature is controlled to be 92 ℃ during dripping;
(3) and after the dropwise adding, adding 2 parts of sodium hydroxide and 52 parts of water, continuing to react for 2 hours, cooling and discharging to obtain the concrete synergist.
Example 3
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding 32 parts of tea saponin and 12 parts of phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 5 hours after the temperature is raised to 140 ℃;
(2) then adding 10 parts of dimethylacrylamide into a reaction tank, uniformly stirring, and then beginning to dropwise add a potassium persulfate solution with the mass percentage concentration of 6%, wherein the potassium persulfate solution is prepared from 0.6 part of potassium persulfate and 9.4 parts of water, the dropwise adding time is controlled to be 3.5 hours, and the temperature is controlled to be 98 ℃ during dropwise adding;
(3) and after the dripping is finished, adding 6 parts of potassium hydroxide and 30 parts of water, continuing to react for 3 hours, cooling and discharging to obtain the concrete synergist.
Example 4
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding 34 parts of tea saponin and 14.5 parts of phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 3.3 hours after the temperature is raised to 125 ℃;
(2) adding dimethylamino propyl acrylamide into a reaction tank, uniformly stirring, and then beginning to dropwise add a potassium persulfate solution with the mass percentage concentration of 8%, wherein the potassium persulfate solution is prepared from 1 part of potassium persulfate and 11.5 parts of water, the dropwise adding time is controlled to be 4.7 hours, and the temperature is controlled to be 97 ℃ during dropwise adding;
(3) and after the dripping is finished, adding 5 parts of potassium hydroxide and 22 parts of water to continue reacting for 3.7 hours, cooling and discharging to obtain the concrete synergist.
Example 5
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding 36 parts of tea saponin and 8 parts of phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 4.2 hours after the temperature is raised to 125 ℃;
(2) adding 13 parts of dimethylamino propyl acrylamide into a reaction tank, uniformly stirring, and then beginning to dropwise add an ammonium persulfate solution with the mass percentage concentration of 7%, wherein the ammonium persulfate solution is prepared from 1.4 parts of ammonium persulfate and 18.6 parts of water, the dropwise adding time is controlled to be 4.5 hours, and the temperature is controlled to be 93 ℃ during dropwise adding;
(3) and after the dropwise adding, adding 4 parts of sodium carbonate and 19 parts of water, continuing to react for 1-4 hours, cooling and discharging to obtain the concrete synergist.
Example 6
The concrete synergist containing the amide group is prepared from the following raw materials in parts by weight:
the acrylamide monomer is a mixture of dimethylamino propyl acrylamide and dimethylamino propyl methacrylamide, and the mass ratio of the dimethylamino propyl acrylamide to the dimethylamino propyl methacrylamide is 1:6, namely, the use amounts of the dimethylamino propyl acrylamide and the dimethylamino propyl methacrylamide are respectively 2 parts and 12 parts.
The initiator is a mixture of sodium persulfate and potassium persulfate, and the mass ratio of the sodium persulfate to the potassium persulfate is 1:5, namely, the usage amounts of the sodium persulfate and the potassium persulfate are respectively 0.3 part and 1.5 part.
The invention relates to a preparation method of concrete synergist containing amide groups, which is realized by the following steps:
(1) adding 39 parts of tea saponin and 13 parts of phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 4 hours after the temperature is raised to 135 ℃;
(2) then adding 2 parts of dimethylamino propyl acrylamide and 12 parts of dimethylamino propyl methacrylamide into a reaction tank, stirring uniformly, and then beginning to dropwise add an initiator solution with the mass percentage concentration of 9%, wherein the initiator solution is prepared from 0.3 part of sodium persulfate, 1.5 parts of potassium persulfate and 18.2 parts of water, the dropwise adding time is controlled to be 3.8 hours, and the temperature is controlled to be 91 ℃ during dropwise adding;
(3) and after the dripping is finished, adding 2 parts of potassium carbonate and 12 parts of water, continuing to react for 2 hours, cooling and discharging to obtain the concrete synergist.
In the following test, the concrete grade C30 commonly used in concrete enterprises is used as a reference for comparison and inspection. The concrete application test using the concrete synergist of the invention shows the effect.
TABLE 1C 30 concrete mixing ratio kg/m3
| Mixing ratio | Cement | Water (W) | Fly ash | Slag of mine | River sand | Crushed stone of 5-31.5 mm |
| Datum | 210 | 150 | 98 | 54 | 790 | 1038 |
| After adjustment | 189 | 150 | 98 | 54 | 790 | 1059 |
Remarking:
1. the cement is P.O 42.5 cement;
2. 10 percent of fly ash with the fineness of 45 mu m, 94 percent of water requirement ratio, 0.3 percent of water content and 1.8 percent of loss on ignition are adopted;
3. the slag is 95-grade slag with a specific surface area of 420m2Kg, fluidity ratio of 101%, 7d compressive strengthThe degree is 76MPa, and the 28d compressive strength is 99 MPa;
4. the selected river sand has the fineness modulus of 2.6, the mud content of 1.5 and the mud block content of 0 percent;
5. the graded broken stone is 5-31.5 mm broken stone, the needle sheet content is 8.2%, the crushing index is 11.1%, the mud content is 0.5%, and the mud block content is 0%;
6. the water reducing agent is low-concentration polycarboxylic acid water reducing agent JSS, and the water reducing rate is 21%.
The concrete synergist provided by the invention has a reinforcing effect on cement, and improves workability; under the condition that the standard formula condition of the concrete is not changed, the prepared concrete is good in workability, easy to construct and small in slump loss, the 7d and 28d compressive strengths have obvious improving effects, and the concrete strength experimental results are shown in the following table:
TABLE 2 application effect of concrete synergist prepared in examples 1-6 of the present invention
Remarking:
1. selecting a reference mixing ratio;
2. the water reducing agent is a polycarboxylic acid water reducing agent, and the dosage of the water reducing agent is 9.8kg/m3；
2. The dosage of the synergist is three ten-thousandth of the dosage of the cement.
The concrete synergist provided by the invention has a reinforcing effect on cement, and improves workability; compared with the reference mixing ratio, the concrete under the condition of the adjusted mixing ratio (the cement dosage is reduced by 10%) shows that the compressive strength of 7d and 28d is not reduced and even is improved, and the concrete synergist provided by the invention has the effect of reducing the cement dosage. The concrete strength test results are shown in the following table:
TABLE 3 Effect of concrete synergist prepared in examples 1-6 of the present invention
Remarking:
1. the reference mixing ratio is selected for the comparative sample experiment, and the adjusted mixing ratio is selected in the examples 1-6;
2. the dosage of the polycarboxylate superplasticizer is 9.8kg/m3；
3. The dosage of the synergist is three ten-thousandth of the dosage of the cement.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (1)
1. A preparation method of concrete synergist containing amide groups is characterized by comprising the following steps: the method is realized by the following steps:
(1) adding tea saponin and phosphoric acid into a reaction tank, starting stirring and heating, and reacting for 3-6 hours after the temperature is raised to 133-150 ℃;
(2) adding an acrylamide monomer into a reaction tank, uniformly stirring, and then beginning to dropwise add an initiator solution with the mass percentage concentration of 1-10%, wherein the initiator solution is prepared from the initiator and water, the dropwise adding time is controlled to be 3.5-5 hours, and the temperature is controlled to be 92-100 ℃ during dropwise adding;
(3) after the dripping is finished, adding inorganic base and the rest water, continuing to react for 2-4 hours, cooling and discharging to obtain the concrete synergistic effect;
the material is mainly prepared from the following raw materials in parts by weight:
the acrylamide monomer is hydroxymethyl acrylamide;
the initiator is one or a mixture of more than two of sodium persulfate, potassium persulfate and ammonium persulfate which are mixed in any ratio;
the inorganic base is one or a mixture of more than two of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate mixed in any ratio.
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| CN201810625127.0A CN108586663B (en) | 2018-06-17 | 2018-06-17 | Concrete synergist containing amide group and preparation method thereof |
| CN202010284278.1A CN111518240B (en) | 2018-06-17 | 2018-06-17 | Preparation method of concrete synergist containing amide group |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003089506A1 (en) * | 2002-04-22 | 2003-10-30 | Purdue Research Foundation | Hydrogels having enhanced elasticity and mechanical strength properties |
| CN103613305A (en) * | 2013-11-22 | 2014-03-05 | 光景生物科技(苏州)有限公司 | Natural tea saponin foaming agent and preparation method thereof |
| CN107868186A (en) * | 2017-09-28 | 2018-04-03 | 青田中科植物科技有限公司 | A kind of preparation method of tea saponin acrylate copolymer and its application in water-coal-slurry |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478287B (en) * | 2014-12-29 | 2017-01-11 | 福建清源科技有限公司 | Multifunctional concrete synergist and preparation method thereof |
| CN106116208A (en) * | 2016-06-24 | 2016-11-16 | 桂林华越环保科技有限公司 | Concrete synergist |
| CN105949385B (en) * | 2016-07-15 | 2018-04-03 | 刘碧霞 | A kind of naphthalene system ceramic dispersants and preparation method thereof |
| CN106674435A (en) * | 2016-07-15 | 2017-05-17 | 刘碧霞 | Composite ceramic dispersant and preparation method thereof |
| CN106904867B (en) * | 2017-04-20 | 2019-03-08 | 福建清源科技有限公司 | Concrete synergist containing chitosan sodium sulfonate and preparation method thereof |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003089506A1 (en) * | 2002-04-22 | 2003-10-30 | Purdue Research Foundation | Hydrogels having enhanced elasticity and mechanical strength properties |
| CN103613305A (en) * | 2013-11-22 | 2014-03-05 | 光景生物科技(苏州)有限公司 | Natural tea saponin foaming agent and preparation method thereof |
| CN107868186A (en) * | 2017-09-28 | 2018-04-03 | 青田中科植物科技有限公司 | A kind of preparation method of tea saponin acrylate copolymer and its application in water-coal-slurry |
Non-Patent Citations (2)
| Title |
|---|
| 刘晓杰等: "丙烯酰胺聚合物在混凝土中的性能研究", 《混凝土》 * |
| 田洁华等: "茶皂素表面活性及其在加气混凝土工业中的应用研究", 《硅酸盐建筑制品》 * |
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