CN114380970A - Organic-inorganic hybrid grouting material for foaming water shutoff and preparation process thereof - Google Patents
Organic-inorganic hybrid grouting material for foaming water shutoff and preparation process thereof Download PDFInfo
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- CN114380970A CN114380970A CN202210027030.6A CN202210027030A CN114380970A CN 114380970 A CN114380970 A CN 114380970A CN 202210027030 A CN202210027030 A CN 202210027030A CN 114380970 A CN114380970 A CN 114380970A
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- foaming
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- inorganic hybrid
- grouting material
- water shutoff
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- 239000000463 material Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000005187 foaming Methods 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 239000006260 foam Substances 0.000 claims abstract description 16
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 11
- 239000004088 foaming agent Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 10
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 10
- 239000004111 Potassium silicate Substances 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 6
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical group COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 4
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 4
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 claims description 3
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 2
- -1 alkyl glycoside Chemical class 0.000 claims description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 2
- 229930182470 glycoside Natural products 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 2
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical compound [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000004872 foam stabilizing agent Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- ITCAUAYQCALGGV-XTICBAGASA-M sodium;(1r,4ar,4br,10ar)-1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylate Chemical compound [Na+].C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C([O-])=O ITCAUAYQCALGGV-XTICBAGASA-M 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Images
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3893—Low-molecular-weight compounds having heteroatoms other than oxygen containing silicon
- C08G18/3895—Inorganic compounds, e.g. aqueous alkalimetalsilicate solutions; Organic derivatives thereof containing no direct silicon-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/166—Catalysts not provided for in the groups C08G18/18 - C08G18/26
- C08G18/168—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/20—Heterocyclic amines; Salts thereof
- C08G18/2009—Heterocyclic amines; Salts thereof containing one heterocyclic ring
- C08G18/2018—Heterocyclic amines; Salts thereof containing one heterocyclic ring having one nitrogen atom in the ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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- C08G18/22—Catalysts containing metal compounds
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- C08G18/242—Catalysts containing metal compounds of tin organometallic compounds containing tin-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
-
- 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
- C08K5/00—Use of organic ingredients
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- C08K5/101—Esters; Ether-esters of monocarboxylic acids
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- C08K5/101—Esters; Ether-esters of monocarboxylic acids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- C08G2101/00—Manufacture of cellular products
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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Abstract
The invention discloses an organic-inorganic hybrid grouting material for foaming water shutoff and a preparation process thereof, and belongs to the technical field of grouting foaming. The organic-inorganic hybrid grouting material comprises the following raw materials: water glass, a foam stabilizer, a catalyst, an emulsifier, isocyanate substances, a waterproof agent and a foaming agent. The preparation process comprises the following steps: uniformly mixing water glass, a foam stabilizer, a catalyst and an emulsifier in proportion to obtain a component A; mixing isocyanate substances, a waterproof agent and a foaming agent uniformly according to a proportion to obtain a component B; and mixing the component A and the component B to obtain the organic-inorganic hybrid grouting material for foaming water shutoff. The organic-inorganic hybrid grouting material for foaming and water plugging has the advantages of high foaming expansion ratio, low reaction temperature, low density and better waterproof performance. Meanwhile, the material belongs to a novel green environment-friendly material, and after being injected into a stratum, the material has no influence on the environment, the environment protection requirement completely reaches the standard, and the application value is very wide.
Description
Technical Field
The invention relates to the technical field of grouting foaming, in particular to an organic-inorganic hybrid grouting material for foaming water plugging and a preparation process thereof.
Background
When underground engineering construction such as a tunnel is carried out, because the stratum contains water and the water plugging performance of the grouting material cannot meet the requirements, if the underground engineering construction is not controlled, huge engineering disasters such as sudden water gushing and the like can be caused, so that huge social and economic losses are caused, the engineering construction efficiency is influenced, and the engineering completion time is delayed. Therefore, in order to prevent the above disasters, grouting is usually performed on the stratum pipe piece, and a good water blocking effect is achieved between the pipe piece and the stratum through injecting materials, so that the project achieves the expected effect.
The silicate modified water plugging material is a novel polymer grouting material and has a series of advantages of simple components, good grouting effect, convenience and safety in construction and the like. In recent years, silicate modified grouting materials are widely applied in underground construction, but in water-rich strata, the filling effect cannot be well achieved due to the fact that the conventional grouting materials are poor in water plugging performance and low in foaming product multiplying power, so that the water plugging effect of the grouting materials is influenced, and unstable influence is caused on construction.
Therefore, the research and development of the organic-inorganic hybrid grouting material for foaming water shutoff, which has high foaming expansion ratio, low reaction temperature, small density and good waterproof performance, is of great significance.
Disclosure of Invention
The invention aims to provide an organic-inorganic hybrid grouting material for foaming water shutoff and a preparation process thereof, so as to solve the problems of poor water shutoff performance, low foaming product multiplying power, poor filling effect and the like of the existing grouting material. The organic-inorganic hybrid grouting material for foaming water shutoff has high foaming expansion ratio, low reaction temperature, small density and better waterproof performance, can meet most engineering requirements, can effectively fill grouting holes, obviously reduces the leakage condition caused by poor waterproof performance, and still has excellent waterproof effect in a water-rich stratum, thereby ensuring the normal operation of engineering.
In order to achieve the purpose, the invention provides the following scheme:
one purpose of the invention is to provide an organic-inorganic hybrid grouting material for foaming water shutoff, which comprises the following raw materials in parts by weight: 75-90 parts of water glass, 1-5 parts of foam stabilizer, 2-5 parts of catalyst, 3-6 parts of emulsifier, 75-85 parts of isocyanate substance, 5-15 parts of waterproof agent and 5-10 parts of foaming agent.
Further, the water glass is a sodium silicate solution or a mixture of the sodium silicate solution and a potassium silicate solution; the modulus of the sodium silicate solution is 2.5-3.0, and the Baume degree is 45-50 degrees; the modulus of the potassium silicate solution is 3.2-3.5, and the Baume degree is 35-40 degrees.
Further, the foam stabilizer is one or two of AK-8805 and AK-8806.
Further, the catalyst is one or more of triethylamine, triethanolamine, zinc isooctanoate, pyridine, dibutyltin dilaurate and DMP-30.
Further, the emulsifier is one or more of alkyl glycoside, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
Further, the isocyanate substances are one or more of PAPI135, PM300, 44V10L and PZ 601.
Further, the waterproof agent is methyl acrylate and/or ethylene glycol acrylate.
Further, the foaming agent comprises abietate and modified rosin thermopolymer, wherein the abietate is preferably sodium abietate, and the source of the modified rosin thermopolymer is Shunhua construction materials Limited ED-201 type concrete air entraining agent.
The invention also aims to provide a preparation process of the organic-inorganic hybrid grouting material for foaming water shutoff, which comprises the following steps:
(1) weighing raw materials of water glass, a foam stabilizer, a catalyst and an emulsifier according to a proportion, sequentially putting the raw materials into a stirrer for stirring, and controlling the stirrer to stop stirring after various raw materials are fully mixed to obtain a component A;
(2) weighing the raw materials of the isocyanate substances, the waterproof agent and the foaming agent according to a proportion, sequentially putting the raw materials into a stirrer for stirring, and controlling the stirrer to stop stirring after various raw materials are fully mixed to obtain a component B;
(3) when the grouting agent is applied on site, the component A and the component B are grouted according to the volume ratio of 1: 1.
Furthermore, the rotation speed of the stirring is 120-150r/min, and the stirring time is 10-30 min.
The invention discloses the following technical effects:
(1) hair brushThe foaming expansion ratio of the organic-inorganic hybrid grouting material for foaming and water shutoff is 18-25 times, and the density is low. According to the organic-inorganic hybrid grouting material for foaming and water shutoff, the polyurethane material is modified by silicate, the reaction temperature in the foaming and molding process of the material is reduced, and the internal temperature is not more than 80 ℃ at most in the foaming and curing process of the material. The foaming agent content in the raw materials of the organic-inorganic hybrid grouting material for foaming and water shutoff is low, and the foaming is mainly CO generated by the chemical reaction in the polyurethane raw materials2Foams formed from gases. Therefore, the liquid material is relatively stable during storage and transportation. Wherein, the foam stabilizer is used as a surfactant for prolonging and stabilizing the foam and keeping the long-term performance; the catalyst has the function of catalyzing silicate modified polyurethane to generate foam; the emulsifier can reduce the surface tension, so that the foam is fluffy, and the expansion rate is improved; the waterproof agent has the function of water plugging; the foaming agent acts as a surfactant and may increase the cell strength.
(2) The organic-inorganic hybrid grouting material for foaming water shutoff disclosed by the invention has better waterproof performance, can meet most engineering requirements, can effectively fill grouting holes, obviously reduce the leakage condition caused by poor waterproof performance, still has excellent waterproof effect in a water-rich stratum, and is suitable for being used in a water-rich environment. Meanwhile, the material belongs to a green environment-friendly novel material, and after the material is injected into a stratum, the environment is not affected, and the environment protection requirement completely reaches the standard.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a scanning electron microscope image of the organic-inorganic hybrid grouting material for foaming and water plugging in example 1;
FIG. 2 is a partially enlarged scanning electron micrograph of the organic-inorganic hybrid grouting material for foaming and water shutoff in example 1.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
In the present invention, all the raw materials are conventional commercially available products.
In the invention, the foam stabilizers AK-8805 and AK 8806 are purchased from Demeishi chemical industry Co., Ltd; the isocyanate is one or more of PAPI135 from Dow chemical company, PM300 from Tantawawa polyurethane GmbH, 44V10L from Germany Bayer company, and Cosmonate PZ601 from Japan three-well industry group; the modified rosin thermopolymer is derived from Shunhua construction materials Co., Ltd., ED-201 type concrete air-entraining agent.
In the following examples, when the water glass is a mixture of sodium silicate and potassium silicate solutions, the volume ratio is 1: 1; the modulus of the sodium silicate solution is 2.5-3.0, and the Baume degree is 45-50 degrees; the potassium silicate solution has a modulus of 3.2-3.5 and a baume degree of 35-40 deg. Modulus and baume are important properties of silicates, in the case of sodium silicate, n ═ SiO2/Na2O; the larger the modulus is, the larger the Si content is, the larger the binding power is, but the more difficult the Si content is to dissolve in water, so an appropriate range is selected; baume indicates the concentration of the solution, with greater concentration containing more sodium silicate.
When the foam stabilizer is a mixture of AK-8805 and AK 8806, the mass ratio is 1: 1.
Examples 1-6 formulations are shown in table 1:
TABLE 1
Grouting materials were prepared according to the component proportions of table 1, with the specific preparation steps:
(1) weighing raw materials of water glass, a foam stabilizer, a catalyst and an emulsifier according to a proportion, sequentially putting the raw materials into a stirrer, and stirring for 25min at a speed of 150r/min to obtain a component A;
(2) weighing the isocyanate substances, the waterproof agent and the foaming agent according to a proportion, sequentially putting the materials into a stirrer, and stirring for 20min at a speed of 120r/min to obtain a component B;
(3) when the grouting agent is applied on site, a double-liquid grouting pump is used for grouting the component A and the component B according to the volume ratio of 1: 1.
Comparative example 1
The difference from example 1 is that no foam stabilizer or blowing agent is added.
Comparative example 2
The difference from example 1 is that no emulsifier is added.
Comparative example 3
The difference from example 1 is that no water repellent is added.
Table 2 shows the foaming time, the maximum reaction temperature, and the foaming ratio of the grouting material prepared in each example and comparative example.
TABLE 2
As can be seen from Table 2, the foaming expansion ratio of the organic-inorganic hybrid grouting material for water plugging can reach 25 times, and the density is low; the reaction temperature in the foaming and forming process of the material is reduced by modifying the polyurethane material through silicate, and the internal temperature is not more than 80 ℃ at most in the foaming and curing process of the material; the grouting material has good waterproof performance, can meet most engineering requirements, can effectively fill grouting holes, obviously reduce leakage caused by poor waterproof performance, still has good waterproof effect in a water-rich stratum, and is suitable for being used in a water-rich environment.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. An organic-inorganic hybrid grouting material for foaming water shutoff is characterized by comprising the following raw materials in parts by weight: 75-90 parts of water glass, 1-5 parts of foam stabilizer, 2-5 parts of catalyst, 3-6 parts of emulsifier, 75-85 parts of isocyanate substance, 5-15 parts of waterproof agent and 5-10 parts of foaming agent.
2. The organic-inorganic hybrid grouting material for foaming water shutoff according to claim 1, wherein the water glass is sodium silicate solution or a mixture of sodium silicate solution and potassium silicate solution; the modulus of the sodium silicate solution is 2.5-3.0, and the Baume degree is 45-50 degrees; the modulus of the potassium silicate solution is 3.2-3.5, and the Baume degree is 35-40 degrees.
3. The organic-inorganic hybrid grouting material for foaming water shutoff according to claim 1, characterized in that the foam stabilizer is one or both of AK-8805 and AK-8806.
4. The organic-inorganic hybrid grouting material for foaming water shutoff according to claim 1, wherein the catalyst is one or more of triethylamine, triethanolamine, zinc isooctanoate, pyridine, dibutyltin dilaurate and DMP-30.
5. The organic-inorganic hybrid grouting material for foaming water shutoff according to claim 1, characterized in that the emulsifier is one or more of alkyl glycoside, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
6. The organic-inorganic hybrid grouting material for foaming water shutoff according to claim 1, characterized in that the isocyanate substances are one or more of PAPI135, PM300, 44V10L and PZ 601.
7. The organic-inorganic hybrid grouting material for foaming water shutoff according to claim 1, wherein the waterproof agent is methyl acrylate and/or ethylene glycol acrylate.
8. The organic-inorganic hybrid grouting material for foaming water plugging as claimed in claim 1, wherein the foaming agent comprises abietate and modified rosin thermopolymer.
9. The preparation process of the organic-inorganic hybrid grouting material for foaming water shutoff according to any one of claims 1 to 8, characterized by comprising the following steps:
(1) weighing raw materials of water glass, a foam stabilizer, a catalyst and an emulsifier according to a proportion, sequentially putting the raw materials into a stirrer for stirring, and uniformly mixing to obtain a component A;
(2) weighing the raw materials of the isocyanate substances, the waterproof agent and the foaming agent according to a proportion, sequentially putting the raw materials into a stirrer for stirring, and uniformly mixing to obtain a component B;
(3) and mixing the component A and the component B to obtain the organic-inorganic hybrid grouting material for foaming water shutoff.
10. The preparation process as claimed in claim 9, wherein the rotation speed of the stirring is 120-150r/min, and the stirring time is 10-30 min; the volume ratio of the component A to the component B is 1: 1.
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