CN112279948B - Acrylate grouting material and preparation method and application thereof - Google Patents
Acrylate grouting material and preparation method and application thereof Download PDFInfo
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- CN112279948B CN112279948B CN202011247607.1A CN202011247607A CN112279948B CN 112279948 B CN112279948 B CN 112279948B CN 202011247607 A CN202011247607 A CN 202011247607A CN 112279948 B CN112279948 B CN 112279948B
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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
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/04—Acids; Metal salts or ammonium salts thereof
- C08F120/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention belongs to the field of grouting plugging materials, and discloses an acrylate grouting material and a preparation method and application thereof. The grouting material is prepared by mixing a component A, a component B and an accelerant according to the mass ratio of 1; the component A is prepared from the following raw materials in parts by weight: 21-28 parts of acrylic acid, 8-15 parts of alkaline substances, 54-65 parts of distilled water and 2-4 parts of self-made cross-linking agent; the component B is prepared from the following raw materials in parts by mass: 2-4 parts of initiator and 96-98 parts of distilled water. The self-made cross-linking agent is obtained by taking acrylic acid and a water glass solution as raw materials to react, and the method can obtain the acrylate gel with high cross-linking strength and good elasticity. When in use, the mixture of the component A and the accelerant is injected into a seepage or water accumulation part together with the component B by adopting a double-liquid grouter, and the grouting agent is mainly applied to the seepage water treatment of building expansion joints, the soil layer consolidation and the grouting of foundation anti-seepage curtains.
Description
Technical Field
The invention belongs to the field of grouting plugging materials, and particularly relates to an acrylate grouting material as well as a preparation method and application thereof.
Background
The waterproof problem in the modern building industry is always a great problem which puzzles people. The initial method is to use cement mortar for pouring, but the cement grouting has some problems, the penetration rate of the cement for some micro cracks is low, the complete plugging is difficult to realize, and the cement mortar is not elastic after being cured and is difficult to apply in some expansion joints. The problem was not solved until the 70's of the last century by the advent of acrylate grouting materials, which had low initial viscosity, good gel elasticity and controllable gel time. Because of these excellent properties, the acrylate grouting material has been widely used in the waterproof field. At present, most of acrylate grouting materials are prepared from metal oxides or hydroxides as raw materials, a cross-linking agent is basically obtained by an alkyd esterification method, and finally obtained acrylate gel is easy to lose water to cause elasticity reduction and has insufficient strength after water absorption.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention mainly aims to provide an acrylate grouting material.
The invention also aims to provide a preparation method of the acrylate grouting material. The invention takes metal carbonate as a raw material and nano magnesium hydroxide as an auxiliary material to prepare acrylate, obtains the acrylate grouting material capable of rapidly absorbing water, and uses self-made silica sol to react with acrylic acid for a cross-linking agent, aiming at strengthening the cross-linking strength of acrylate and ensuring the elasticity and gel strength of acrylate gel after water loss.
The invention also aims to provide application of the acrylate grouting material.
The purpose of the invention is realized by the following technical scheme:
the acrylate grouting material is formed by mixing a component A, a component B and an accelerant according to a mass ratio of 1;
the component A is prepared from the following raw materials in parts by mass: 21-28 parts of acrylic acid, 8-15 parts of alkaline substances, 54-65 parts of distilled water and 2-4 parts of self-made cross-linking agent; wherein the alkaline substance is light calcium carbonate, sodium bicarbonate and nano magnesium hydroxide, and the self-made cross-linking agent is prepared by the reaction of acrylic acid and water glass;
the component B is prepared from the following raw materials in parts by weight: 2-4 parts of initiator and 96-98 parts of distilled water; wherein the initiator is at least one of persulfate or organic peroxide.
The accelerator is organic amine, preferably at least one of diethanolamine, triethanolamine and tetramethylethylenediamine, and more preferably triethanolamine.
The modulus of the water glass is 2.60-2.90, the content of silicon dioxide is 25.7%, the content of sodium oxide is 10.2%, and the density at 20 ℃ is 1.436-1.465 g/cm 3 。
The alkaline substance is preferably light calcium carbonate, sodium bicarbonate and nano magnesium hydroxide; the initiator is preferably sodium persulfate.
The particle size of the nano magnesium hydroxide is in the range of 1-10 nanometers, the purity is more than 98 percent, and the nano magnesium hydroxide is solid magnesium hydroxide powder without agglomeration.
Preferably, the acrylate grouting material is formed by mixing 100 parts by mass of the a component, 100 parts by mass of the B component, and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by mass: 21-28 parts of acrylic acid, 2-4 parts of light calcium carbonate, 1-3 parts of sodium bicarbonate, 5-8 parts of nano magnesium hydroxide, 2-4 parts of self-made cross-linking agent and 54-65 parts of distilled water; the component B is prepared from the following raw materials in parts by mass: 2-4 parts of sodium persulfate and 96-98 parts of distilled water.
The preparation method of the acrylate grouting material comprises the following operation steps:
(1) Preparing a self-made crosslinking agent: adding 29 parts by mass of acrylic acid into 25 parts by mass of water glass, and reacting at normal temperature until the mixture becomes a silica sol colloid; continuously adding 46 parts by mass of acrylic acid into the colloid, heating to 90-100 ℃, and carrying out esterification reaction for 5 hours under the vacuum degree of 0.1MPa to obtain a self-made crosslinking agent;
(2) Preparation of the component A: adding acrylic acid into distilled water and uniformly stirring to obtain an acrylic acid solution; adding alkaline substances into the acrylic acid solution under the conditions of stirring and cooling water until the acid value of the solution is reduced to be below 5mgKOH/g, controlling the temperature of the solution to be not more than 50 ℃, and filtering after the reaction is finished; adding a self-made cross-linking agent into the liquid, and stirring and mixing uniformly to obtain a component A;
(3) Preparation of the component B: dissolving an initiator in distilled water and uniformly stirring to obtain a component B;
(4) Preparing an acrylate grouting material: and uniformly mixing the component A, the component B and the accelerator according to a mass ratio of 1.
The application of the acrylic acid salt grouting material in water leakage treatment of building expansion joints, soil layer consolidation and grouting of foundation base seepage-proofing curtains is disclosed.
The application is to adopt a double-liquid grouting mode, and a mixture of the component A and the accelerator is injected into a leakage or ponding part together with the component B by using a double-liquid grouting machine.
Compared with the prior art, the invention has the following advantages and effects:
the acrylate prepared by the invention has high crosslinking speed and large specific surface area, can realize quick water shutoff, and the used crosslinking agent contains a large number of silicon-oxygen bonds, thereby improving the crosslinking density of the acrylate, strengthening the strength of acrylate gel, enhancing the elasticity of the gel after water loss, and preventing the gel from losing efficacy and causing re-leakage due to water loss.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
The preparation method of the acrylate grouting material in the following embodiment comprises the following operation steps:
(1) Preparing a self-made crosslinking agent: adding 29 parts by mass of acrylic acid into 25 parts by mass of water glass, and reacting at normal temperature until the mixture becomes a silica sol colloid; continuously adding 46 parts by mass of acrylic acid into the colloid, heating to 90-100 ℃, and carrying out esterification reaction for 5 hours under the vacuum degree of 0.1MPa to obtain a self-made crosslinking agent;
(2) Preparation of component A: adding acrylic acid into distilled water and uniformly stirring to obtain an acrylic acid solution; adding alkaline substances into the acrylic acid solution under the conditions of stirring and cooling water until the acid value of the solution is reduced to be below 5mgKOH/g, controlling the temperature of the solution to be not more than 50 ℃, and filtering after the reaction is finished; adding a self-made cross-linking agent into the liquid, and stirring and mixing uniformly to obtain a component A;
(3) Preparation of the component B: dissolving an initiator in distilled water and uniformly stirring to obtain a component B;
(4) Preparation of acrylate grouting material: and uniformly mixing the component A, the component B and the accelerator according to a mass ratio of 1.
Example 1:
an acrylate grouting material is formed by mixing 100 parts by mass of a component A, 100 parts by mass of a component B and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by weight: 21 parts of acrylic acid, 3 parts of light calcium carbonate, 1 part of sodium bicarbonate, 7 parts of nano magnesium hydroxide, 65 parts of distilled water and 3 parts of a self-made cross-linking agent; the component B is prepared from the following raw materials in parts by weight: 2 parts of sodium persulfate and 98 parts of distilled water. The performance index of the acrylate grouting material obtained in this example is shown in table 1.
Example 2:
an acrylate grouting material is prepared by mixing 100 parts by mass of a component A, 100 parts by mass of a component B and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by mass: 25 parts of acrylic acid, 3 parts of light calcium carbonate, 2 parts of sodium bicarbonate, 5 parts of nano magnesium hydroxide, 63 parts of distilled water and 2 parts of self-made cross-linking agent; the component B is prepared from the following raw materials in parts by mass: 3 parts of sodium persulfate and 97 parts of distilled water. The performance index of the acrylate grouting material obtained in this example is shown in table 1.
Example 3:
an acrylate grouting material is formed by mixing 100 parts by mass of a component A, 100 parts by mass of a component B and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by weight: 28 parts of acrylic acid, 3 parts of light calcium carbonate, 3 parts of sodium bicarbonate, 8 parts of nano magnesium hydroxide, 54 parts of distilled water and 4 parts of self-made cross-linking agent; the component B is prepared from the following raw materials in parts by mass: 4 parts of sodium persulfate and 96 parts of distilled water. The performance index of the acrylate grouting material obtained in this example is shown in table 1.
Example 4:
an acrylate grouting material is formed by mixing 100 parts by mass of a component A, 100 parts by mass of a component B and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by mass: 22 parts of acrylic acid, 4 parts of light calcium carbonate, 3 parts of sodium bicarbonate, 8 parts of nano magnesium hydroxide, 60 parts of distilled water and 3 parts of self-made cross-linking agent; the component B is prepared from the following raw materials in parts by weight: 3 parts of sodium persulfate and 97 parts of distilled water. The performance index of the acrylate grouting material obtained in this example is shown in table 1.
Example 5:
an acrylate grouting material is prepared by mixing 100 parts by mass of a component A, 100 parts by mass of a component B and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by mass: 25 parts of acrylic acid, 2 parts of light calcium carbonate, 1 part of sodium bicarbonate, 6 parts of nano magnesium hydroxide, 63 parts of distilled water and 3 parts of self-made cross-linking agent; the component B is prepared from the following raw materials in parts by weight: 3 parts of sodium persulfate and 97 parts of distilled water. The performance index of the acrylate grouting material obtained in this example is shown in table 1.
TABLE 1 product Performance index of acrylate grouting materials
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. An acrylate grouting material, characterized in that: the acrylate grouting material is prepared by mixing a component A, a component B and an accelerator according to the mass ratio of 1;
the component A is prepared from the following raw materials in parts by mass: 21-28 parts of acrylic acid, 8-15 parts of alkaline substances, 54-65 parts of distilled water and 2-4 parts of self-made cross-linking agent; wherein the alkaline substance is light calcium carbonate, sodium bicarbonate and nano magnesium hydroxide; the self-made cross-linking agent is prepared by the following method: adding 29 parts by mass of acrylic acid into 25 parts by mass of water glass, and reacting at normal temperature until the mixture becomes colloid; continuously adding 46 parts by mass of acrylic acid into the colloid, heating to 90-100 ℃, and carrying out esterification reaction for 5 hours under the vacuum degree of 0.1Mpa to obtain a self-made crosslinking agent;
the component B is prepared from the following raw materials in parts by weight: 2-4 parts of initiator and 96-98 parts of distilled water; wherein the initiator is at least one of persulfate and organic peroxide.
2. The acrylate grouting material according to claim 1, wherein: the accelerant is organic amine.
3. The acrylate grouting material according to claim 2, characterized in that: the accelerant is at least one of diethanolamine, triethanolamine and tetramethylethylenediamine.
4. The acrylate grouting material according to claim 1, characterized in that: the accelerant is triethanolamine.
5. The acrylate grouting material according to claim 1, wherein: the modulus of the water glass is 2.60-2.90, the content of silicon dioxide is 25.7%, the content of sodium oxide is 10.2%, and the density at 20 ℃ is 1.436-1.465 g/cm 3 。
6. The acrylate grouting material according to claim 1, wherein: the particle size of the nano magnesium hydroxide is within the range of 1-10 nanometers, and the purity is more than 98 percent; the initiator is sodium persulfate.
7. The acrylate grouting material according to claim 1, wherein: the acrylate grouting material is formed by mixing 100 parts by mass of the component A, 100 parts by mass of the component B and 6 parts by mass of an accelerator; the component A is prepared from the following raw materials in parts by mass: 21-28 parts of acrylic acid, 2-4 parts of light calcium carbonate, 1-3 parts of sodium bicarbonate, 5-8 parts of nano magnesium hydroxide, 2-4 parts of self-made cross-linking agent and 54-65 parts of distilled water; the component B is prepared from the following raw materials in parts by mass: 2-4 parts of sodium persulfate and 96-98 parts of distilled water.
8. The method for preparing an acrylate grouting material according to claim 1, characterized by comprising the following steps:
(1) Preparing a self-made cross-linking agent: adding 29 parts by mass of acrylic acid into 25 parts by mass of water glass, and reacting at normal temperature until the mixture becomes colloid; continuously adding 46 parts by mass of acrylic acid into the colloid, heating to 90-100 ℃, and reacting for 5 hours under the vacuum degree of 0.1Mpa to obtain a self-made crosslinking agent;
(2) Preparation of the component A: adding acrylic acid into distilled water and uniformly stirring to obtain an acrylic acid solution; adding alkaline substances into the acrylic acid solution under the conditions of stirring and cooling water until the acid value of the solution is reduced to be below 5mgKOH/g, controlling the temperature of the solution to be not more than 50 ℃, and filtering after the reaction is finished; adding a self-made cross-linking agent into the liquid, and stirring and mixing uniformly to obtain a component A;
(3) Preparation of the component B: dissolving an initiator in distilled water and uniformly stirring to obtain a component B;
(4) Preparing an acrylate grouting material: and uniformly mixing the component A, the component B and the accelerator according to a mass ratio of 1.
9. The use of the acrylic grouting material according to claim 1 in the treatment of water leakage at construction expansion joints, soil consolidation and grouting of foundation base impervious curtains.
10. Use according to claim 9, characterized in that: the application is to adopt a double-liquid grouting mode, and a mixture of the component A and the accelerator is injected into a leakage or ponding part together with the component B by using a double-liquid grouting machine.
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