CN111117491A - GIS equipment gas leakage perception coating and preparation process thereof - Google Patents
GIS equipment gas leakage perception coating and preparation process thereof Download PDFInfo
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- CN111117491A CN111117491A CN201911376371.9A CN201911376371A CN111117491A CN 111117491 A CN111117491 A CN 111117491A CN 201911376371 A CN201911376371 A CN 201911376371A CN 111117491 A CN111117491 A CN 111117491A
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
- C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C09D201/06—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The invention discloses a GIS equipment gas leakage perception coating and a preparation process thereof, wherein the coating comprises the following components in parts by weight: 30-50 parts of organic silicon modified epoxy acrylic acid, 0.15-0.25 part of cobalt hydroxide crystal, 1-3 parts of deionized water, 3-5 parts of cellulose nanofibril, 50-70 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 16-20 parts of aluminum oxide, 10-15 parts of sea foam powder, 20-30 parts of talcum powder, 15-25 parts of mica powder, 6-10 parts of organic silicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent, and Bi2WO60.15 to 0.25 portion. Coatings prepared according to the inventionThe paint is coated on the surface of the GIS tank body or the flange joint, when gas leakage occurs at the coating position, the paint can chemically react with partial substances in the leaked gas to generate substances with new colors, the use is convenient, the operation is simple, and leakage points can be found in the first time.
Description
Technical Field
The invention relates to the technical field of electric power overhaul, in particular to a GIS equipment gas leakage sensing technology.
Background
As sulfur hexafluoride (SF6) gas insulation media are increasingly widely used in high-voltage electrical equipment, gas leakage is more and more heavy to repair, and SF6 gas leakage becomes one of important factors influencing the operation safety of GIS electrical equipment. The leakage reasons of the SF6 gas are many, the leakage reasons can be classified into the aspects of selection processing and assembly of equipment production materials, field installation, design defects of equipment, aging, damage and use of sealing materials and the like according to the conclusion of production, installation and use links of sulfur hexafluoride equipment, and the existing leakage detection technical means not only has huge workload, but also cannot find the position of a leakage point at the first time and cannot guide the operation, maintenance and overhaul work of the equipment. With the continuous improvement of the technical requirements of sulfur hexafluoride leakage detection, finding a technical means capable of effectively detecting the leakage state of sulfur hexafluoride in real time has very important significance for promoting production safety and even operation safety of a power grid.
Disclosure of Invention
The invention aims to provide a GIS equipment gas leakage perception coating and a preparation process thereof, so that the gas leakage perception coating coated on the GIS equipment can effectively detect the leakage state of sulfur hexafluoride in real time.
In order to solve the technical problems, the invention adopts the following technical scheme: the GIS equipment gas leakage perception coating comprises the following components in parts by weight:
30-50 parts of organic silicon modified epoxy acrylic acid, 0.15-0.25 part of cobalt hydroxide crystal, 1-3 parts of deionized water, 3-5 parts of cellulose nanofibril, 50-70 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 16-20 parts of aluminum oxide and sea water10-15 parts of foam powder, 20-30 parts of talcum powder, 15-25 parts of mica powder, 6-10 parts of organosilicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent, and Bi2WO60.15 to 0.25 portion.
Preferably, the composition comprises the following components in parts by weight: 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt hydroxide crystal, 2 parts of deionized water, 4 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 25 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 25 parts of talcum powder, 20 parts of mica powder, 8 parts of organic silicon coupling agent, 25 parts of dimethylbenzene, 3 parts of dispersing agent, 2 parts of anti-settling agent, 4 parts of defoaming agent, and Bi2WO60.2 part.
Preferably, the composition comprises the following components in parts by weight: 50 parts of organic silicon modified epoxy acrylic acid, 0.25 part of cobalt hydroxide crystal, 1.5 parts of deionized water, 3 parts of cellulose nanofibril, 55 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 20 parts of aluminum oxide, 15 parts of sea foam powder, 20 parts of talcum powder, 22 parts of mica powder, 10 parts of organic silicon coupling agent, 20 parts of dimethylbenzene, 2 parts of dispersing agent, 3 parts of anti-settling agent, 4 parts of defoaming agent and 60.25 parts of Bi2WO60.
Preferably, the composition comprises the following components in parts by weight: 35 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt hydroxide crystal, 3 parts of deionized water, 3.5 parts of cellulose nanofibril, 65 parts of bismuth vanadate, 30 parts of polyvinyl alcohol, 16 parts of aluminum oxide, 10 parts of sea foam powder, 30 parts of talcum powder, 15 parts of mica powder, 7 parts of organic silicon coupling agent, 30 parts of dimethylbenzene, 3 parts of dispersing agent, 3 parts of anti-settling agent, 3 parts of defoaming agent and 60.15 parts of Bi2WO60.
The invention also provides a preparation process of the GIS equipment gas leakage perception coating, which is prepared by adopting the formula of the GIS equipment gas leakage perception coating and comprises the following steps:
(1) accurately weighing each component according to a basic formula;
(2) adding cobalt hydroxide crystals and cellulose nanofibrils into deionized water, heating and dissolving, and then adding organic silicon modified epoxy acrylic acid until the cellulose nanofibrils are completely dissolved to obtain a composite solution for later use;
(3) dissolving bismuth vanadate and polyvinyl alcohol into the composite solution for later use;
(4) mixing alumina, sea foam powder, talcum powder and mica powder according to a ratio, and grinding for 1h for later use;
(5) weighing the organosilicon coupling agent and xylene according to the proportion, putting the mixture into a beaker, and dispersing the mixture in a high-speed disperser at a high speed of higher than 15000r/min for l0 min;
(6) weighing the dispersing agent, the anti-settling agent and the Bi2WO6 according to the mixture ratio, and dispersing for l0min in a high-speed disperser at a high speed of more than 15000 r/min;
(7) mixing the semi-finished products prepared in the steps (3) to (6), and stirring for 30min at 1500r/min on a magnetic stirrer;
(8) adding defoaming agent, and stirring at low speed of 500r/min for 5min on a magnetic stirrer.
The paint prepared by the invention is coated on the surface of a GIS tank body or a flange joint, and when gas leakage occurs at the coating part, the paint can chemically react with partial substances in the leaked gas to generate substances with new colors.
Therefore, the following beneficial effects are achieved:
1. the position of the leakage point can be accurately judged by observing the color change occurrence point, and the severity of the leakage can be qualitatively judged according to the depth and the range of the color change. The defect of the existing leakage detection means can be effectively avoided, a new technical thought is provided for GIS equipment safety maintenance, the use is convenient, the operation is simple, leakage points can be searched for in the first time, and the method has very important significance on production safety.
Effect on production:
1) convenient to use, very big reduction fortune dimension working strength.
2) The manufacture of the adhesive tape with the coating greatly enhances the pertinence of the leakage detection work.
3) The color change is sensitive, the reaction time is short, and the operation and maintenance efficiency is obviously improved.
4) The field is maintenance-free, and the workload is reduced.
2. The color former (cobalt hydroxide crystals) in the paint has a relatively short life after spraying, and the color former generally has a substantially disappeared after 6 to 10 months. The invention can obviously prolong the service life of the cellulose nano-fibril to more than 18 months by innovating a formula, particularly adding the cellulose nano-fibril and Bi2WO6 in a specific proportion in the whole formula.
The following detailed description will explain the present invention and its advantages.
Detailed Description
At present, research results of various research institutions at home and abroad on the aspect of GIS equipment leakage perception coatings are few. Based on actual production, the invention develops the GIS special leakage sensing coating for the field test by adopting a research method combining theoretical research, sampling test and field operation, and accurately judges the position of a leakage point through the change of color, thereby providing theoretical and practical basis for timely detection of GIS equipment gas leakage.
The gas leakage detection color-changing coating selects the optimal preparation conditions by researching the influence of different color-changing pigments, fillers, color ratios, the content of the color-changing pigments, the amount of epoxy resin and organic silicon contained in the base paint required by the coating and the preparation process of the coating on the color-changing coating, and innovatively develops a new formula and a new process.
The SF6 gas is decomposed under the action of electric arc, partial discharge, high temperature and other factors to generate characteristic decomposition products which react with the invading moisture to generate more than ten kinds of strong corrosive acid gases, and the acid gases with reducibility are easy to react with some heavy metal salts to generate heavy metal sulfides.
Research shows that the heavy metal salts capable of generating obvious chemical reaction with the acidic gas containing S element are mainly nickel salt and cobalt salt, but the nickel salt has larger toxicity, so that the application range of the nickel salt is limited. The invention mainly researches the color development, corrosion and other properties of the cobalt metal compound which can generate a chemical reaction with SF6 characteristic decomposer and can generate a color-changing compound. The results show that cobalt hydroxide is a more desirable material for paint preparation as a color former, as shown in Table 1 below.
TABLE 1 comparison of the Properties of the color-changing Compounds
Cobalt hydroxide was prepared according to the following formula:
cobalt hydroxide reacts with most of the S-containing acid gases to form a black compound, cobalt sulfide, and a rose-colored compound, cobalt sulfite, and these color changes are observable by the naked eye, and the chemical formula is shown below:
by reaction with hydrogen sulphide
CoO+H2S→CoS+H2O
Reaction with sulfur dioxide
CoO+SO2+H2O→CoSO3+H2O
By reaction with thionyl fluoride
CoO+SOF2+H2O→CoSO3+2HF
Reaction with sulfur tetrafluoride
CoO+SF4+2H2O→CoSO3+4HF
Although the leakage point may only exist a trace amount of sulfur acid gas, the leakage point can react with the color former (cobalt hydroxide crystals) in the coating material with the increase of time, and substances with different colors are generated, so that the color change is more obvious. The position of the leakage point can be accurately judged by observing the color change occurrence point, and the severity of the leakage can be qualitatively judged according to the depth and the range of the color change.
Example one
The GIS equipment gas leakage perception coating comprises the following components in parts by weight:
30-50 parts of organic silicon modified epoxy acrylic acid, 0.15-0.25 part of cobalt hydroxide crystal, 1-3 parts of deionized water, 3-5 parts of cellulose nanofibril, 50-70 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 16-20 parts of aluminum oxide, 10-15 parts of sea foam powder, 20-30 parts of talcum powder, 15-25 parts of mica powder, 6-10 parts of organic silicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent and 60.15-0.25 part of Bi2WO60.
Specific application example 1: the composition comprises the following components in parts by weight: 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt hydroxide crystal, 2 parts of deionized water, 4 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 25 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 25 parts of talcum powder, 20 parts of mica powder, 8 parts of organic silicon coupling agent, 25 parts of dimethylbenzene, 3 parts of dispersing agent, 2 parts of anti-settling agent, 4 parts of defoaming agent and 60.2 parts of Bi2WO60.
Specific application example 2: the composition comprises the following components in parts by weight: 50 parts of organic silicon modified epoxy acrylic acid, 0.25 part of cobalt hydroxide crystal, 1.5 parts of deionized water, 3 parts of cellulose nanofibril, 55 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 20 parts of aluminum oxide, 15 parts of sea foam powder, 20 parts of talcum powder, 22 parts of mica powder, 10 parts of organic silicon coupling agent, 20 parts of dimethylbenzene, 2 parts of dispersing agent, 3 parts of anti-settling agent, 4 parts of defoaming agent and 60.25 parts of Bi2WO60.
Specific application example 3: the composition comprises the following components in parts by weight: 35 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt hydroxide crystal, 3 parts of deionized water, 3.5 parts of cellulose nanofibril, 65 parts of bismuth vanadate, 30 parts of polyvinyl alcohol, 16 parts of aluminum oxide, 10 parts of sea foam powder, 30 parts of talcum powder, 15 parts of mica powder, 7 parts of organic silicon coupling agent, 30 parts of dimethylbenzene, 3 parts of dispersing agent, 3 parts of anti-settling agent, 3 parts of defoaming agent and 60.15 parts of Bi2WO60.
Example two
The preparation process of the GIS equipment gas leakage perception coating adopts the formula of the GIS equipment gas leakage perception coating for preparation, and comprises the following steps:
(1) accurately weighing each component by using an electronic balance according to a basic formula;
(2) adding cobalt hydroxide crystals and cellulose nanofibrils into deionized water, heating and dissolving, and then adding organic silicon modified epoxy acrylic acid until the cellulose nanofibrils are completely dissolved to obtain a composite solution for later use;
(3) dissolving bismuth vanadate and polyvinyl alcohol into the composite solution for later use;
(4) mixing alumina, sea foam powder, talcum powder and mica powder according to a ratio, and grinding for 1h for later use;
(5) weighing the organic silicon coupling agent and the dimethylbenzene according to the proportion, putting the mixture into a beaker, and dispersing the mixture in a high-speed disperser at a high speed of more than 15000r/min for l0 min;
(6) the dispersant, the anti-settling agent and Bi are weighed according to the proportion2WO6Dispersing in high speed disperser at high speed higher than 15000r/min for 10 min;
(7) mixing the semi-finished products prepared in the steps (3) to (6), and stirring for 30min at 1500r/min on a magnetic stirrer;
(8) adding defoaming agent, and stirring at low speed of 500r/min for 5min on a magnetic stirrer.
The coating is coated on the surface of a GIS tank body or a flange joint, and when gas leakage occurs at the coating, the coating can chemically react with partial substances in the leaked gas to generate substances with new colors. When the GIS equipment runs for a long time, operation and maintenance personnel can judge whether leakage exists and position the leakage point through the change of the color of the coating. The field experiment result shows that the coating has the characteristics of rapid color change, obvious color change effect, long retention time and the like, and has the advantages of good coating performance, good waterproof performance, no peculiar smell and no corrosion to metal components, thereby providing theoretical and practical basis for timely detection of gas leakage of GIS equipment.
The position of the leakage point can be accurately judged by observing the color change occurrence point, and the severity of the leakage can be qualitatively judged according to the depth and the range of the color change. The system provides technical support for gas leakage prevention and early warning of the GIS, can directly guide type selection and operation maintenance of the GIS, can find potential equipment hazards of slow leakage caused by air chamber sand holes and the like in time, provides accurate early warning information for maintenance and rush repair of the equipment, and has great significance for guaranteeing safe and stable operation of the GIS. And convenient to use, easy operation can seek the leak point the very first time, have very important meaning to production safety.
Effect on production:
1) convenient to use, very big reduction fortune dimension working strength.
2) The manufacture of the adhesive tape with the coating greatly enhances the pertinence of the leakage detection work.
3) The color change is sensitive, the reaction time is short, and the operation and maintenance efficiency is obviously improved.
4) The field is maintenance-free, and the workload is reduced.
The color former (cobalt hydroxide crystals) in the paint has a relatively short life after spraying, and the color former generally has a substantially disappeared after 6 to 10 months. By the innovative formula, particularly the specific proportion of the cellulose nanofibrils and the Bi2WO6 in the overall formula, the service life of the novel cellulose nanofibrils can be prolonged to more than 18 months.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in other forms without departing from the spirit or essential characteristics thereof. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (6)
- GIS equipment gas leakage perception coating is characterized in that: the composition is prepared from the following components in parts by weight: 30-50 parts of organic silicon modified epoxy acrylic acid, 0.15-0.25 part of cobalt hydroxide crystal, 1-3 parts of deionized water, 3-5 parts of cellulose nanofibril, 50-70 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 16-20 parts of aluminum oxide, 10-15 parts of sea foam powder, 20-30 parts of talcum powder, 15-25 parts of mica powder, 6-10 parts of organic silicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent, and Bi2WO60.15 to 0.25 portion.
- 2. The GIS device gas leak sensing coating of claim 1, wherein: the composition comprises the following components in parts by weight: 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt hydroxide crystal, 2 parts of deionized water, 4 parts of cellulose nanofibril, 60 parts of bismuth vanadate, and polyvinyl alcohol25 parts of alumina, 18 parts of alumina, 12 parts of sea foam powder, 25 parts of talcum powder, 20 parts of mica powder, 8 parts of organosilicon coupling agent, 25 parts of dimethylbenzene, 3 parts of dispersing agent, 2 parts of anti-settling agent, 4 parts of defoaming agent and Bi2WO60.2 part.
- 3. The GIS device gas leak sensing coating of claim 1, wherein: the composition comprises the following components in parts by weight: 50 parts of organic silicon modified epoxy acrylic acid, 0.25 part of cobalt hydroxide crystal, 1.5 parts of deionized water, 3 parts of cellulose nanofibril, 55 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 20 parts of aluminum oxide, 15 parts of sea foam powder, 20 parts of talcum powder, 22 parts of mica powder, 10 parts of organic silicon coupling agent, 20 parts of dimethylbenzene, 2 parts of dispersing agent, 3 parts of anti-settling agent, 4 parts of defoaming agent and 60.25 parts of Bi2WO60.
- 4. The GIS device gas leak sensing coating of claim 1, wherein: the composition comprises the following components in parts by weight: 35 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt hydroxide crystal, 3 parts of deionized water, 3.5 parts of cellulose nanofibril, 65 parts of bismuth vanadate, 30 parts of polyvinyl alcohol, 16 parts of aluminum oxide, 10 parts of sea foam powder, 30 parts of talcum powder, 15 parts of mica powder, 7 parts of organic silicon coupling agent, 30 parts of dimethylbenzene, 3 parts of dispersing agent, 3 parts of anti-settling agent, 3 parts of defoaming agent and 60.15 parts of Bi2WO60.
- The preparation process of the GIS equipment gas leakage perception coating is characterized by comprising the following steps: the GIS device gas leakage perception paint formulation of any one of claims 1 to 4 is used for preparation, comprising the steps of:(1) accurately weighing each component according to a basic formula;(2) adding cobalt hydroxide crystals and cellulose nanofibrils into deionized water, heating and dissolving, and then adding organic silicon modified epoxy acrylic acid until the cellulose nanofibrils are completely dissolved to obtain a composite solution for later use;(3) dissolving bismuth vanadate and polyvinyl alcohol into the composite solution for later use;(4) mixing alumina, sea foam powder, talcum powder and mica powder according to a ratio, and grinding for 1h for later use;(5) weighing the organic silicon coupling agent and the dimethylbenzene according to the proportion, putting the mixture into a beaker, and dispersing the mixture in a high-speed disperser at a high speed of more than 15000r/min for l0 min;(6) the dispersant, the anti-settling agent and Bi are weighed according to the proportion2WO6Dispersing in a high speed disperser at a speed higher than 15000r/min for l0 min;(7) mixing the semi-finished products prepared in the steps (3) to (6), and stirring for 30min at 1500r/min on a magnetic stirrer;(8) adding defoaming agent, and stirring at low speed of 500r/min for 5min on a magnetic stirrer.
- 6. The GIS device gas leakage perception coating preparation process according to claim 5, wherein: the prepared coating is coated on the surface of the GIS tank body and/or the flange connection part.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113155913A (en) * | 2021-04-21 | 2021-07-23 | 浙江大学 | Gas sensor for detecting sulfur hexafluoride decomposition product and preparation method thereof |
| CN117861475A (en) * | 2024-03-12 | 2024-04-12 | 河北华油天然气有限责任公司 | Low-temperature-resistant gas leakage detecting agent and preparation method thereof |
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| CN108610899A (en) * | 2018-03-28 | 2018-10-02 | 国网山西省电力公司晋中供电公司 | A kind of novel perception coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155913A (en) * | 2021-04-21 | 2021-07-23 | 浙江大学 | Gas sensor for detecting sulfur hexafluoride decomposition product and preparation method thereof |
| CN113155913B (en) * | 2021-04-21 | 2022-07-08 | 浙江大学 | Gas sensor for detecting sulfur hexafluoride decomposition product and preparation method thereof |
| CN117861475A (en) * | 2024-03-12 | 2024-04-12 | 河北华油天然气有限责任公司 | Low-temperature-resistant gas leakage detecting agent and preparation method thereof |
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