CN113355051B - Underwater solidification plugging material and preparation method and use method thereof - Google Patents
Underwater solidification plugging material and preparation method and use method thereof Download PDFInfo
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- CN113355051B CN113355051B CN202110741756.1A CN202110741756A CN113355051B CN 113355051 B CN113355051 B CN 113355051B CN 202110741756 A CN202110741756 A CN 202110741756A CN 113355051 B CN113355051 B CN 113355051B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/12—Materials for stopping leaks, e.g. in radiators, in tanks
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
- C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
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- Engineering & Computer Science (AREA)
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- Sealing Material Composition (AREA)
Abstract
The invention discloses an underwater solidification plugging material and a preparation method and a use method thereof, wherein the underwater solidification plugging material comprises a magnesium-containing alkaline material, a phosphorus-containing material and a hydrophobic organic material, and the mass ratio of the magnesium-containing alkaline material to the phosphorus-containing material to the hydrophobic organic material is (1-5); the magnesium-containing alkaline material is magnesium-containing alkaline oxide or magnesium-containing carbonate; the magnesium-containing basic oxide is magnesium oxide, and the magnesium-containing basic carbonate is magnesium carbonate; the phosphorus-containing material is a phosphorus-containing inorganic acid or a phosphorus-containing inorganic acid salt; the plugging material can effectively solve the problems of long final setting time and short service life of the existing plugging material.
Description
Technical Field
The invention belongs to the technical field of waterproof materials, and particularly relates to an underwater solidification plugging material and a preparation method thereof.
Background
The engineering leakage concerns the structure safety and the service life and brings potential safety hazards to the society, so that the research on the underwater plugging material is very important, the leakage problem can be timely treated, safety accidents are avoided, and the engineering service life is prolonged. The existing market adopts various underwater waterproof plugging processes or plugging materials, including various waterproof plugging devices, the plugging materials mainly include organic waterproof plugging materials and a small amount of inorganic waterproof plugging materials, but the materials generally have the following problems: the organic coating has the defects of poor pollution, poor weather resistance, poor acid and alkali corrosion resistance and need to be maintained regularly; the final setting time is longer, and the method is not suitable for projects with short plugging time requirements and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an underwater solidification plugging material, a preparation method and a use method thereof, and the plugging material can effectively solve the problems of long final setting time and short service life of the existing plugging material.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: the main body of the plugging material is inorganic component
The underwater solidification lost circulation material comprises a magnesium-containing alkaline material, a phosphorus-containing material and a hydrophobic organic material, wherein the mass ratio of the magnesium-containing alkaline material to the phosphorus-containing material to the hydrophobic organic material is 1-5.
Further, the mass ratio of the magnesium-containing basic material to the phosphorus-containing material to the hydrophobic organic material is 4.
Further, the magnesium-containing basic material is magnesium-containing basic oxide or magnesium-containing carbonate.
Further, the magnesium-containing basic oxide is magnesium oxide, and the magnesium-containing basic carbonate is magnesium carbonate.
Further, the phosphorus-containing material is a phosphorus-containing inorganic acid or a phosphorus-containing inorganic acid salt.
Further, the phosphorus-containing material is at least one of phosphoric acid, ammonium dihydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, and diammonium hydrogen phosphate.
In the scheme, the magnesium-containing alkaline material and the phosphorus-containing material are used as main materials of the underwater plugging material, are both inorganic materials, cannot pollute the environment, are strong in acid and alkali resistance, are quickly condensed and hardened through acid-base rapid reaction, provide strength support for a plugging point, realize the pressure bearing strength of 5-15MPa within 30 minutes, the strength of more than 30MPa within 2 hours and the soaking strength of not less than 40MPa in a long-age period, and realize the plugging effect under long-time and high-pressure resistance; the curing agent can form a waterproof coating film on the hardened plugging material, so that the waterproof performance of the plugging material is improved, and the service life of the plugging material is further prolonged. The reaction mechanism of the magnesium-containing alkaline material and the phosphorus-containing material is as follows:
NH 4 H 2 PO 4 +MgO+5H 2 O→NH 4 MgPO 4 ·6H 2 O
KH 2 PO 4 +MgO+5H 2 O→KMgPO 4 ·6H 2 O
furthermore, the hydrophobic organic material is prepared by compounding an organic waterproof agent and an organic curing agent according to the mass ratio of 90-98, wherein the organic waterproof agent can form a hydrophobic layer on the blocking material to achieve a hydrophobic effect, the curing agent further cures the film forming strength of the hydrophobic layer to improve the weather resistance and the scouring resistance of the hydrophobic layer, and if the using amount of the curing agent is too much, the hydrophobic effect of the hydrophobic layer is influenced.
The phosphorus-magnesium material releases heat in the hydration process, is beneficial to the interaction between the organic waterproof agent and the curing agent, further improves the surface hardening film-forming effect of the hardened phosphorus-magnesium material, and is beneficial to the formation of the hydrophobic effect.
Further, the organic waterproof agent is at least one of fluorosilicone resin, organosilicon modified phenolic resin, fluorine modified epoxy resin and fluorine modified polyurethane.
Further, the curing agent is at least one of polyisocyanate, hexamethylenetetramine, diethylenetriamine or isocyanate.
Further, when the fluorine-silicon resin is used as an organic waterproof agent, the corresponding curing agent is polyisocyanate, when the organic silicon modified phenolic resin is used as a waterproof agent, the corresponding curing agent is hexamethylene tetramine, when the fluorine modified epoxy resin is used as a waterproof agent, the corresponding curing agent is diethylenetriamine, and when the fluorine modified polyurethane is used as a waterproof agent, the corresponding curing agent is isocyanate.
In the scheme, the used organic waterproof agent can be self-crosslinked and cured into a transparent cured film with surface tension at the temperature of 40-50 ℃ or crosslinked with a curing agent at normal temperature to form a film, and the film has the characteristics of high waterproofness, non-adhesiveness and the like, and is contacted with water, so that the contact angle is more than 135 degrees.
The preparation method of the underwater solidification plugging material comprises the following steps:
(1) Uniformly mixing a magnesium-containing material and a phosphorus-containing material to prepare composite powder;
(2) Uniformly mixing an organic waterproof agent and an organic curing agent to prepare an organic waterproof liquid;
(3) And (3) mixing the composite powder in the step (1) with the organic waterproof liquid in the step (2), uniformly stirring, placing in an environment with the temperature of 40-50 ℃, and baking for 2-4 hours to obtain the composite waterproof paint.
The using method of the underwater solidification plugging material comprises the following steps: pouring the underwater plugging material into water, and standing for 15-25 min.
The beneficial effects produced by the invention are as follows:
1. the underwater solidification plugging material disclosed by the invention is simple in preparation method and use method, can realize the solidification plugging effect within about 20 minutes underwater, and greatly shortens the plugging time of the traditional waterproof plugging material.
2. The contact angle of the plugging material in the invention reaches more than 135 degrees, and the good underwater hydrophobic effect can be realized.
3. The plugging material has good environmental adaptability and long service life, and can achieve the effect of having the same service life as a building body.
Drawings
FIG. 1 is a schematic view showing the contact angle of the plugging material in example 1 after being solidified underwater and after being contacted with water;
FIG. 2 is a schematic view showing the contact angle of the plugging material in example 2 after being solidified underwater and then being contacted with water;
FIG. 3 is a schematic view showing the contact angle of the plugging material in example 3 after underwater solidification and after contact with water;
fig. 4 is a schematic view showing the contact angle of the plugging material in example 4 after being solidified underwater and then contacted with water.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1
An underwater solidification plugging material is prepared by the following steps:
(1) Uniformly mixing the dead burned magnesium oxide and the dipotassium hydrogen phosphate according to the mass ratio of 3:1 to obtain a composite material;
(2) Uniformly mixing fluorosilicone resin and polyisocyanate according to the mass ratio of 1;
(3) The composite material and the hydrophobic organic material are uniformly mixed according to the mass ratio of 1.
The using method of the underwater solidification plugging material comprises the following steps: slowly pouring the prepared underwater solidification leaking stoppage material into a place needing to be stopped in a water body, filling a leak, and controlling the surrounding water to be static for 20 min.
Example 2
An underwater solidification plugging material is prepared by the following steps:
(1) Uniformly mixing magnesium carbonate, magnesium oxide and diammonium hydrogen phosphate according to the mass ratio of 4;
(2) Uniformly mixing fluorosilicone resin, organic silicon modified phenolic resin and hexamethylenetetramine according to the mass ratio of 1;
(3) The composite material and the hydrophobic organic material are uniformly mixed according to the mass ratio of 1.
The using method of the underwater solidification plugging material comprises the following steps: slowly pouring the prepared underwater solidification leaking stoppage material into a place needing to be stopped in a water body, filling a leak, and controlling the surrounding water to be static for 20 min.
Example 3
An underwater solidification plugging material is prepared by the following steps:
(1) Uniformly mixing magnesium carbonate, magnesium oxide, dipotassium hydrogen phosphate and diammonium hydrogen phosphate according to the mass ratio of 1;
(2) Uniformly mixing fluorine modified epoxy resin and diethylenetriamine according to the mass ratio of 1;
(3) The composite material and the hydrophobic organic material are uniformly mixed according to the mass ratio of 1.
The using method of the underwater solidification plugging material comprises the following steps: slowly pouring the prepared underwater solidification leaking stoppage material into a place needing to be stopped in a water body, filling a leak, and controlling the surrounding water to be static for 20 min.
Example 4
An underwater solidification plugging material is prepared by the following steps:
(1) Uniformly mixing magnesium carbonate, magnesium oxide, phosphoric acid and diammonium phosphate according to the mass ratio of 1.2;
(2) Uniformly mixing fluorine modified polyurethane and isocyanate according to the mass ratio of 1;
(3) The composite material and the hydrophobic organic material are uniformly mixed according to the mass ratio of 1.
The using method of the underwater solidification plugging material comprises the following steps: slowly pouring the prepared underwater solidification leaking stoppage material into a place needing to be stopped in a water body, filling a leak, and controlling the surrounding water to be static for 20 min.
Test examples
The compressive strength of the hardened bodies formed after the underwater solidification plugging materials in examples 1-4 are respectively measured after being left stand underwater for 20min, and the specific results are shown in Table 1; and measuring the contact angle of the plugging material after contacting with water, and executing GB-T30693-2014 in the measuring process, wherein the specific results are shown in figures 1-4.
Table 1: compressive strength
| Compressive Strength after 20min (MPa) | Compressive strength after 2h (MPa) | |
| Example 1 | 2.2 | 3.4 |
| Example 2 | 2.8 | 2.8 |
| Example 3 | 1.6 | 2.4 |
| Example 4 | 3.5 | 3.2 |
The data in the table show that the compressive strength of the plugging material in the application can reach more than 1.5MPa after standing for 20min, and the plugging material is proved to be capable of being rapidly hardened to achieve the purpose of plugging.
As can be seen from the attached drawings 1-4, after the underwater solidification plugging material prepared by the method disclosed by the invention is contacted with water, the contact angles are all over 135 degrees, and a good hydrophobic effect can be achieved.
Claims (3)
1. The underwater solidification lost circulation material is characterized by comprising a magnesium-containing basic material, a phosphorus-containing material and a hydrophobic organic material, wherein the mass ratio of the magnesium-containing basic material to the phosphorus-containing material to the hydrophobic organic material is 1-5; the magnesium-containing basic material comprises magnesium oxide or magnesium carbonate; the phosphorus-containing material is at least one of phosphoric acid, ammonium dihydrogen phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate and diammonium hydrogen phosphate; the hydrophobic organic material is prepared by compounding an organic waterproof agent and an organic curing agent according to the mass ratio of 90-98; the organic waterproof agent is at least one of fluorosilicone resin, organic silicon modified phenolic resin, fluorine modified epoxy resin and fluorine modified polyurethane; the curing agent is at least one of polyisocyanate, hexamethylenetetramine, diethylenetriamine or isocyanate.
2. The preparation method of the underwater solidification plugging material as claimed in claim 1, which is characterized by comprising the following steps:
(1) Uniformly mixing a magnesium-containing material and a phosphorus-containing material to prepare composite powder;
(2) Uniformly mixing an organic waterproof agent and an organic curing agent to prepare an organic waterproof liquid;
(3) And (3) mixing the composite powder in the step (1) with the organic waterproof liquid in the step (2), uniformly stirring, placing in an environment with the temperature of 40-50 ℃, and baking for 2-4 hours to obtain the composite waterproof paint.
3. The use method of the underwater solidification lost circulation material prepared by the preparation method of the underwater solidification lost circulation material as claimed in claim 2 is characterized by comprising the following steps: pouring the underwater plugging material into water, and standing for 15-25 min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102277145B (en) * | 2011-06-03 | 2012-09-12 | 西南石油大学 | Magnesium-oxygen cement slurry used for reservoir water plugging, leak plugging and temporary-closure plugging in oil and gas well and preparation method thereof |
| CA2987538A1 (en) * | 2015-07-07 | 2017-01-12 | Halliburton Energy Services, Inc. | Plugging and abandoning a well using extended-life cement compositions |
| CN106278128A (en) * | 2016-08-18 | 2017-01-04 | 刘志坚 | A kind of multifunctional efficient fast waterproof sealing agent and preparation method |
| CN109678559A (en) * | 2018-12-25 | 2019-04-26 | 同济大学 | A kind of super-hydrophobic, Gao Naijiu Anti-seepage air-permeable sand and preparation method thereof |
| CN110002838A (en) * | 2019-04-01 | 2019-07-12 | 傅自豪 | A kind of solid waste regeneration type waterproofing and leakage-stopping dry powder material and preparation method thereof |
| CN110283513A (en) * | 2019-05-22 | 2019-09-27 | 同济大学 | A kind of super-hydrophobic dose and its preparation method and application for the impervious water storage of sand soil |
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Non-Patent Citations (2)
| Title |
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| "Material flow influence on the weld formation and mechanical performance in underwater friction taper plug welds for pipeline steel";YayunYin等;《Materials & Design》;第88卷;第990-998页 * |
| "新型高效防水/堵漏材料的研制和应用基础研究";张勇等;《建设科技》;第19卷;第27-31页 * |
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