CN111036524A - Composite coating suitable for underground oil pipe and coating method thereof - Google Patents
Composite coating suitable for underground oil pipe and coating method thereof Download PDFInfo
- Publication number
- CN111036524A CN111036524A CN201911185531.1A CN201911185531A CN111036524A CN 111036524 A CN111036524 A CN 111036524A CN 201911185531 A CN201911185531 A CN 201911185531A CN 111036524 A CN111036524 A CN 111036524A
- Authority
- CN
- China
- Prior art keywords
- parts
- composite coating
- aerogel
- oil pipe
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- 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
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Abstract
The invention discloses a composite coating suitable for an underground oil pipe and a coating method thereof, belonging to the technical field of oil extraction in oil fields. A composite coating suitable for an underground oil pipe comprises an epoxy resin primer, an aerogel composite coating intermediate heat-insulating layer and glass flake paint finish; the aerogel composite coating comprises the following components in parts by weight: 10-20 parts of silicon dioxide aerogel, 60-120 parts of self-crosslinking acrylic emulsion, 15-30 parts of glass wool, 5-15 parts of titanium dioxide, 3-10 parts of hydroxyethyl cellulose, 10-30 parts of sodium polyacrylate and 10-20 parts of ammonia water; the glass flake paint comprises the following components: 40-50 parts of modified epoxy resin, 30-35 parts of glass flakes, 3-5 parts of silane coupling agent, 5-10 parts of diluent, 5-10 parts of corundum powder and 10-20 parts of epoxy curing agent. The composite coating suitable for the underground oil pipe solves the problems that the aerogel coating is easy to absorb moisture and crack when meeting water when used on the underground oil pipe.
Description
Technical Field
The invention belongs to the technical field of oil extraction in oil fields, and particularly relates to a composite coating suitable for an underground oil pipe and a coating method thereof.
Background
The oil well generally has the phenomenon of wax deposition, and the wax deposition can block an oil outlet channel, increase the wellhead back pressure, reduce the oil well yield, and can also increase the oil well load simultaneously. In order to keep the normal production of an oil well, the wax removal and prevention method mainly adopts the modes of adding a wax removal agent, hot washing and the like at present, and the method has high cost.
The silicon dioxide aerogel has nanometer pores, is a porous solid material, has the structural characteristics of low density and high porosity, and has super heat insulation performance. The coating with super heat-insulating property is formed by combining silica aerogel, glass wool and a film-forming material for the coating. The existing aerogel coating has the problems of easy moisture absorption and water cracking, and the underground oil pipe is in long-term contact with oil and water, so that the product is not suitable for use, and the existing aerogel coating has poor heat insulation property and cannot meet the high-efficiency heat insulation requirement of oil well produced liquid.
Disclosure of Invention
The invention aims to overcome the defects that the existing aerogel coating of the underground oil pipe is easy to absorb moisture and crack when meeting water, and provides a composite coating suitable for the underground oil pipe and a coating method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a composite coating suitable for an underground oil pipe comprises an epoxy resin primer, an aerogel composite coating intermediate heat-insulating layer and glass flake paint finish;
the aerogel composite coating comprises the following components in parts by weight:
10-20 parts of silicon dioxide aerogel, 60-120 parts of self-crosslinking acrylic emulsion, 15-30 parts of glass wool, 5-15 parts of titanium dioxide, 3-10 parts of hydroxyethyl cellulose, 10-30 parts of sodium polyacrylate and 10-20 parts of ammonia water;
wherein the strength of the glass wool is more than or equal to 40N/cm2The mass fraction of ammonia water is 25 percent;
the glass flake paint comprises the following components in parts by weight:
40-50 parts of modified epoxy resin, 30-35 parts of glass flakes, 3-5 parts of silane coupling agent, 5-10 parts of diluent, 5-10 parts of corundum powder and 10-20 parts of epoxy curing agent.
Further, the particle size of the silicon dioxide aerogel powder is 1-20 mu m, and the pore diameter of the aerogel is 10-15 nm;
the self-crosslinking acrylic emulsion is hydroxyl acrylic emulsion or styrene acrylic emulsion.
Furthermore, the thickness of the glass flake is 5 μm, and the particle size is 20-40 meshes;
the grain diameter of the corundum powder is 50-100 meshes.
Further, the modified epoxy resin is novolac epoxy type vinyl ester resin or epoxy acrylic vinyl ester resin.
Further, the silane coupling agent is vinyl triethoxysilane, vinyl trimethoxysilane or vinyl tris (β -methoxyethoxy) silane;
the diluent is 4-hydroxybutyl vinyl ether or 1, 4-butanediol divinyl ether.
Furthermore, the thickness of the middle heat-insulating layer is 2-4 mm.
Furthermore, the thickness of the primer is 0.5-1mm, and the thickness of the finish paint is 0.5-1 mm.
A method of applying a composite coating suitable for use in a downhole tubing, comprising the steps of:
coating epoxy resin on the wall of the oil pipe to serve as primer;
when the primer is semi-cured, coating the aerogel composite coating on the primer to serve as an intermediate heat-insulating layer;
and after the intermediate heat-insulating layer is cured, coating the glass flake paint on the intermediate heat-insulating layer aerogel paint to be used as finish paint.
Compared with the prior art, the invention has the following beneficial effects:
the composite coating is suitable for the underground oil pipe, the epoxy resin is used as the primer, the corrosion of the water in the aerogel coating which is directly coated on the oil pipe to the oil pipe can be avoided, the epoxy resin is thermosetting resin, has excellent adhesive force, stronger adhesive force to the metal surface, temperature resistance of a paint film,The waterproof performance is outstanding, and the weather resistance is better than that of common organic resin; the primer of 0.5-1mm can provide enough adhesive force and corrosion resistance; the aerogel composite coating is used as an intermediate heat-insulating layer, has high uniformity, quite strong waterproof, moisture-resistant, wear-resistant and corrosion-resistant properties, can be coated in an oil pipe, has strong adhesive force, can adapt to an underground oil-water environment for a long time, has outstanding heat-insulating property, obviously reduces the wax deposition phenomenon of the oil pipe, and has no volatile matter, no toxicity and no harm; the heat conductivity coefficient is small, and the heat preservation effect is good; in the aerogel composite coating, the silicon dioxide aerogel is SiO2The colloid particles are used as a framework to form a nano porous material which has high specific surface area, high porosity, low density (only 3 times of air), extremely low thermal conductivity, flame retardance and water resistance, and the hydrophobic silica aerogel has higher heat preservation performance in a water-soluble coating; the internal fibers of the high-strength glass wool are fluffy and staggered, a large number of tiny pores exist, and the high-strength glass wool can be cooperated with other components in the aerogel powder to play a good heat preservation effect; on the other hand, the glass flakes are used as finish paint, the glass flakes are arranged in parallel in a superposed manner in resin to form a compact impermeable layer structure, and oil and water liquid in an oil well environment must permeate through countless tortuous paths in the cured resin, so that the anticorrosion and impermeable distances are greatly prolonged, and the surface layer of the coating has good waterproof and anticorrosion performances.
Further, the particle size of the silicon dioxide aerogel is 20 microns, the pore diameter is 10-15 nm, and the heat conductivity coefficient is 0.015 w/m.k; the aerogel has the advantages of unique nano-scale hole structure in the aspect of gas phase heat insulation, and from the perspective of a heat transfer mechanism, heat loss is realized through three ways of convection, conduction and radiation, the average value of the pore diameter of the selected silica aerogel is small, the pore diameter of the selected silica aerogel is obviously lower than the molecular mean free path of nitrogen and oxygen in the air by 70 nanometers, air molecules can hardly collide to transfer heat, and the convection heat transfer is avoided; secondly, because the aperture is small, the number of the internal pore walls of the aerogel particles in unit thickness tends to be infinite, and each pore wall plays the role of a heat insulation plate, so that the heat radiation is reduced to the minimum; third, infinite hole walls form infinite heat transfer paths, so that the heat transfer capacity is reduced to the minimum. Therefore, the aerogel has excellent thermal insulation properties.
Furthermore, the thickness of the glass flake is 5 μm, the granularity is 20-40 meshes, the flat type flake with the transverse-longitudinal ratio of 30-120 is adopted, in the glass flake paint, the larger the granularity of the glass flake is, the lower the water vapor permeability is, but the larger the granularity causes that small bubbles generated during construction stirring are not easy to be adsorbed on the flake, so that the water vapor permeability is increased, and the determination of the parameters ensures that the coating has the best waterproof performance.
Furthermore, the thickness of the middle heat-insulating layer is 2-4mm, the larger the thickness of the middle heat-insulating layer is, the better the heat-insulating property is, but the larger the thickness is, the higher the cost is; the thickness of the middle heat-insulating layer is set to be 2-4mm, the heat-insulating effect is above the wax precipitation point of the crude oil, the wax precipitation of the crude oil in the underground is prevented, and the heat-insulating effect and the economical efficiency can be considered at the same time.
Furthermore, the thickness of the finish paint is 0.5-1mm, and the finish paint is applied to an underground oil-water environment and has good waterproof, anti-seepage and anti-corrosion properties.
The coating method of the aerogel composite coating suitable for the underground oil pipe ensures that the aerogel intermediate coating and the primer have good bonding effect.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The aerogel composite coating with the ultralow heat conductivity coefficient is adopted, and the aerogel composite coating is coated on the wall of the oil pipe to effectively preserve heat of produced liquid, so that other wax removal and prevention measures and later maintenance are greatly reduced, and a new way is provided for oil well wax prevention and ground gathering and transportation pipeline heat preservation.
The glass flake anticorrosive wear-resistant coating draws wide attention as an efficient multifunctional coating. The thickness of the glass flake is generally 2-5 μm, the dry film thickness of the solvent type glass flake epoxy coating is generally 200-400 μm, tens to hundreds of layers of the flakes in the coating can be arranged, and a complex and tortuous impermeable diffusion path is formed in the coating. By changing the diffusion and permeation route of corrosive media (such as oil, water and the like), the corrosion inhibitor is difficult to permeate into the base material, thereby achieving good corrosion prevention effect. Meanwhile, a large amount of glass flakes are filled in the coating of the resin-based glass flake finish paint, so that the mechanical strength, the surface hardness, the wear resistance and the adhesive force are improved, the thermal expansion coefficient and the curing shrinkage rate of the coating are also reduced, and the resistance to thermal shock and the heat resistance are increased.
Referring to Table 1, Table 1 shows the specific parameters of the primer and intermediate insulation in examples 1-4, Table 2 shows the specific parameters of the primer in examples 1-4, and Table 3 shows the specific parameters of the intermediate insulation and topcoat components in examples 1-4.
TABLE 1 specific parameters for the primer and intermediate insulation layers in examples 1-4
TABLE 2 specific parameters for the topcoats of examples 1-4
TABLE 3 specific parameters for the composition of the intermediate insulating layer and the topcoat of examples 1-4
Table 4 properties of the composite coating of example 1
Referring to table 4, the performance of the composite coating of example 1, the surface composite coating has better adhesion, heat resistance and corrosion resistance, and is suitable for the environment of the downhole oil pipe.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A composite coating suitable for an underground oil pipe is characterized by comprising an epoxy resin primer, an aerogel composite coating intermediate heat-insulating layer and glass flake paint finish;
the aerogel composite coating comprises the following components in parts by weight:
10-20 parts of silicon dioxide aerogel, 60-120 parts of self-crosslinking acrylic emulsion, 15-30 parts of glass wool, 5-15 parts of titanium dioxide, 3-10 parts of hydroxyethyl cellulose, 10-30 parts of sodium polyacrylate and 10-20 parts of ammonia water;
wherein the strength of the glass wool is more than or equal to 40N/cm2The mass fraction of ammonia water is 25 percent;
the glass flake paint comprises the following components in parts by weight:
40-50 parts of modified epoxy resin, 30-35 parts of glass flakes, 3-5 parts of silane coupling agent, 5-10 parts of diluent, 5-10 parts of corundum powder and 10-20 parts of epoxy curing agent.
2. The composite coating suitable for the downhole oil pipe as claimed in claim 1, wherein the particle size of the silica aerogel powder is 1-20 μm, and the pore size of the gel is 10-15 nm;
the self-crosslinking acrylic emulsion is hydroxyl acrylic emulsion or styrene acrylic emulsion.
3. The composite coating suitable for use in a downhole tubing of claim 1, wherein the glass flakes are 5 μ ι η thick and 20-40 mesh in size;
the grain diameter of the corundum powder is 50-100 meshes.
4. The composite coating suitable for use in a downhole tubing of claim 1, wherein the modified epoxy resin is a novolac epoxy type vinyl ester resin or an epoxy acrylic vinyl ester resin.
5. The composite coating suitable for use in a downhole tubing of claim 1, wherein the silane coupling agent is vinyltriethoxysilane, vinyltrimethoxysilane or vinyltris (β -methoxyethoxy) silane;
the diluent is 4-hydroxybutyl vinyl ether or 1, 4-butanediol divinyl ether.
6. The composite coating for a downhole tubing of claim 1, wherein the intermediate insulation layer is 2-4mm thick.
7. The composite coating for a downhole tubing of claim 1 or 6, wherein the primer thickness is 0.5-1mm and the topcoat thickness is 0.5-1 mm.
8. A method of applying a composite coating suitable for use in a downhole tubing according to any of claims 1 to 7, comprising the steps of:
coating epoxy resin on the wall of the oil pipe to serve as primer;
when the primer is semi-cured, coating the aerogel composite coating on the primer to serve as an intermediate heat-insulating layer;
and after the intermediate heat-insulating layer is cured, coating the glass flake paint on the intermediate heat-insulating layer aerogel paint to be used as finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911185531.1A CN111036524A (en) | 2019-11-27 | 2019-11-27 | Composite coating suitable for underground oil pipe and coating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911185531.1A CN111036524A (en) | 2019-11-27 | 2019-11-27 | Composite coating suitable for underground oil pipe and coating method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111036524A true CN111036524A (en) | 2020-04-21 |
Family
ID=70233855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911185531.1A Pending CN111036524A (en) | 2019-11-27 | 2019-11-27 | Composite coating suitable for underground oil pipe and coating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111036524A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621212A (en) * | 2020-04-29 | 2020-09-04 | 中国石油天然气股份有限公司 | High-strength aerogel thermal insulation composite coating for underground oil pipe and application method thereof |
| CN111621213A (en) * | 2020-04-29 | 2020-09-04 | 中国石油天然气股份有限公司 | Aerogel far infrared thermal insulation composite coating for underground oil pipe and application method thereof |
| CN115445882A (en) * | 2022-09-29 | 2022-12-09 | 武汉东臻科技有限公司 | Desulfurization tower lining anticorrosive material and construction method for performing lining anticorrosion by using same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371531A (en) * | 2014-12-08 | 2015-02-25 | 中国海洋石油总公司 | High-reflective acrylic polyurethane coating composition |
| CN104553108A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Antiseptic thermal-insulation wear-resisting composite coating and pipeline |
-
2019
- 2019-11-27 CN CN201911185531.1A patent/CN111036524A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553108A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Antiseptic thermal-insulation wear-resisting composite coating and pipeline |
| CN104371531A (en) * | 2014-12-08 | 2015-02-25 | 中国海洋石油总公司 | High-reflective acrylic polyurethane coating composition |
Non-Patent Citations (2)
| Title |
|---|
| 《工业建筑防腐蚀设计规范》国家管理组等: "《建筑防腐蚀材料设计与施工手册》", 30 June 1996, 化学工业出版社 * |
| 胡传炘等: "《涂层技术原理及应用》", 30 September 2000, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621212A (en) * | 2020-04-29 | 2020-09-04 | 中国石油天然气股份有限公司 | High-strength aerogel thermal insulation composite coating for underground oil pipe and application method thereof |
| CN111621213A (en) * | 2020-04-29 | 2020-09-04 | 中国石油天然气股份有限公司 | Aerogel far infrared thermal insulation composite coating for underground oil pipe and application method thereof |
| CN115445882A (en) * | 2022-09-29 | 2022-12-09 | 武汉东臻科技有限公司 | Desulfurization tower lining anticorrosive material and construction method for performing lining anticorrosion by using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111036524A (en) | Composite coating suitable for underground oil pipe and coating method thereof | |
| CN104327657B (en) | A kind of heat insulation Waterproof corrosion coating of external wall energy-saving | |
| CN100398492C (en) | Aerogel heat insulation composite material and its preparing method | |
| CN109439083B (en) | Ultrathin intumescent steel structure water-based fireproof coating and preparation method thereof | |
| CN111534131B (en) | Heat-insulating coating and preparation method thereof | |
| KR20120139959A (en) | High density nano coating compositions | |
| Bescher et al. | Sol-gel coatings for the protection of brass and bronze | |
| CN101948651B (en) | Aluminium silicate nano composite insulation coating and preparation method thereof | |
| CN102775863A (en) | Method for preparing anticorrosive paint for directly-buried thermal power pipeline insulating layer | |
| CN112940611B (en) | High-performance expansion type sandwich structure ultrathin steel structure fireproof and anticorrosive composite coating and preparation method thereof | |
| CN115325851B (en) | Heat exchanger and method for manufacturing the same | |
| CN100528983C (en) | Attapulgite insulating paint additive | |
| CN110028300A (en) | Aqueous ceramic insulating mold coating and its application, corrosion-inhibiting coating | |
| CN101948649A (en) | Calcium silicate nanowire composite thermal-insulation coating | |
| CN103450772A (en) | Organic silicon modified epoxy acrylic acid high anticorrosion heat insulation paint and production method thereof | |
| CN115418142A (en) | Heat-preservation sound-insulation coating | |
| CN115322600A (en) | Reflective heat-insulating inorganic coating and preparation method thereof | |
| CN110938322A (en) | Inorganic coating and preparation method thereof | |
| CN113698799A (en) | Graphene inorganic nano wall coating | |
| CN108610949B (en) | Thermal spraying hole sealing agent suitable for high-temperature and high-pressure underground environment and use method thereof | |
| CN101343439B (en) | Reflective-insulation, thermal-insulation coating material and preparation thereof | |
| CN105694667A (en) | Thick-layered thermal-insulated anticorrosion epoxy paint | |
| CN111621212A (en) | High-strength aerogel thermal insulation composite coating for underground oil pipe and application method thereof | |
| CN115710456B (en) | Water-based functional coating and preparation method thereof | |
| CN104403536A (en) | Anti-waxing coating for oil pipelines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200421 |
|
| RJ01 | Rejection of invention patent application after publication |