CN114888440B - Method for in-situ conversion of heat absorption coating - Google Patents
Method for in-situ conversion of heat absorption coating Download PDFInfo
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- CN114888440B CN114888440B CN202210708897.8A CN202210708897A CN114888440B CN 114888440 B CN114888440 B CN 114888440B CN 202210708897 A CN202210708897 A CN 202210708897A CN 114888440 B CN114888440 B CN 114888440B
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- 238000000576 coating method Methods 0.000 title claims abstract description 61
- 239000011248 coating agent Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 40
- 238000010521 absorption reaction Methods 0.000 title abstract description 52
- 238000006243 chemical reaction Methods 0.000 title abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000005260 corrosion Methods 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 27
- 230000007797 corrosion Effects 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims abstract description 4
- 230000001678 irradiating effect Effects 0.000 claims abstract description 3
- 239000010935 stainless steel Substances 0.000 claims description 44
- 229910001220 stainless steel Inorganic materials 0.000 claims description 44
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 8
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 8
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 8
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 22
- 239000002184 metal Substances 0.000 abstract description 22
- 239000011241 protective layer Substances 0.000 abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 abstract description 3
- 239000011368 organic material Substances 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910017052 cobalt Inorganic materials 0.000 abstract description 2
- 239000010941 cobalt Substances 0.000 abstract description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 239000011733 molybdenum Substances 0.000 abstract description 2
- 229910052715 tantalum Inorganic materials 0.000 abstract description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052721 tungsten Inorganic materials 0.000 abstract description 2
- 239000010937 tungsten Substances 0.000 abstract description 2
- 229910052726 zirconium Inorganic materials 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 24
- 229910052799 carbon Inorganic materials 0.000 description 24
- 239000010410 layer Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 15
- 239000004005 microsphere Substances 0.000 description 15
- 239000003575 carbonaceous material Substances 0.000 description 8
- 238000007788 roughening Methods 0.000 description 8
- 238000001755 magnetron sputter deposition Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
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- 239000002253 acid Substances 0.000 description 3
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- 230000005283 ground state Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000004626 scanning electron microscopy Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
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- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/3568—Modifying rugosity
- B23K26/3584—Increasing rugosity, e.g. roughening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/14—Decomposition by irradiation, e.g. photolysis, particle radiation or by mixed irradiation sources
- C23C18/143—Radiation by light, e.g. photolysis or pyrolysis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- Thermal Sciences (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Sustainable Energy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a method for in-situ conversion of a heat absorption coating, which comprises the following steps: (1) Firstly, cleaning and drying a substrate, and then tightly fixing a protective material on the surface of the substrate; (2) Setting parameters of laser direct writing, and scanning and irradiating the fixed protective material and the substrate to obtain the heat absorption coating. The cleaning is as follows: the substrate was sequentially immersed in acetone, ethanol, and DI water, respectively ultrasonically washed for 5 minutes, and then rinsed with DI water. The substrate material is selected from copper, titanium, iron, cobalt, nickel, molybdenum, tungsten, tantalum, zirconium, chromium, or alloys of the foregoing metals. The protective material is an organic material which can transmit light. According to the invention, the metal sheet coated with the transparent organic matter protective layer is directly written by laser, so that the surface organic matter is carbonized while the metal sheet is coarsened, and the heat absorption coating with the functions of corrosion resistance and photo-thermal absorption is obtained.
Description
Technical Field
The invention relates to the technical field of heat absorption coatings, in particular to a method for in-situ conversion of a heat absorption coating.
Background
With worldwide energy shortage and environmental crisis, new energy technologies are receiving increasing attention. Solar energy is regarded as the most important new energy in the 21 st century as inexhaustible pure energy. Solar water heaters are one of the most common in solar energy utilization, and the heat absorbing coating in the solar water heater is the core device thereof.
The preparation method of the solar water heater heat absorption coating mainly comprises three steps: anodic oxidation, black chromium electroplating and magnetron sputtering, wherein the anodic oxidation method belongs to the electroless plating method. The chemical plating and electroplating methods have complex process, more manual operation and difficult control of the process. More troublesome, the waste liquid produced by the method is easy to cause serious environmental pollution; the method for preparing the solar water heater heat absorption coating by magnetron sputtering has more researches in recent years, has the advantages of no pollution, suitability for batch production and the like, but the magnetron sputtering method also has a plurality of problems, such as the adoption of magnetron sputtering equipment, higher equipment requirements, higher environmental requirements and the like, and in addition, the phenomenon of coating spalling possibly occurs due to the fact that the bonding force between the coating prepared by magnetron sputtering and a substrate is not high enough for a long time. Therefore, a simple and convenient method is needed for preparing the heat absorption coating of the solar water heater, the heat absorption coating has the functions of corrosion resistance and photo-thermal absorption, and the coating is not easy to fall off.
Disclosure of Invention
In view of the above prior art, it is an object of the present invention to provide a method for in situ conversion of heat absorbing coatings. According to the invention, the metal sheet coated with the transparent organic matter protective layer is directly written by laser, so that the surface organic matters are carbonized while the metal sheet is roughened, and the heat absorption coating with the functions of corrosion resistance and photo-thermal absorption is obtained; the substrate containing the coating is directly prepared through in-situ conversion, and the coating is not easy to fall off.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect of the invention, there is provided a method of converting an endothermic coating in situ comprising the steps of:
(1) Firstly, cleaning and drying a substrate, and then tightly fixing a protective material on the surface of the substrate;
(2) Setting parameters of laser direct writing, and scanning and irradiating the fixed protective material and the substrate to obtain the heat absorption coating.
The laser beam is focused on the surface of the substrate through the protective material, the surface of the substrate is roughened, and heat generated during roughening carbonizes the protective material, so that the heat-absorbing coating with corrosion resistance is obtained.
The roughened substrate presents black and has good heat absorption effect, and meanwhile, the protective material is carbonized in the laser in-situ conversion process and becomes carbon microspheres to be attached to the roughened substrate surface, so that the method has better heat absorption effect. The coarsened substrate has a good heat absorption effect due to black color, and meanwhile, the protective material is carbonized in the laser in-situ conversion process and becomes carbon microspheres to be attached to the coarsened substrate surface, so that the coarsened substrate has a better heat absorption effect. This is because the carbon material has an sp3, sp2, pi electron structure, photons in the light wave are all absorbed by it, a transition is generated and then energy is released back to the ground state, and heat is generated; meanwhile, the carbon microspheres are black, so that the photo-thermal conversion performance is better; from the perspective of heat radiation, the carbon anti-corrosion layer has low heat scattering and low heat loss, so that the coarsened substrate with the carbon microspheres shows more excellent photo-thermal conversion effect. The carbon material has stable chemical property, is not easy to react with acid and alkali, and has good corrosion resistance because the method provided by the invention is in-situ conversion and the stainless steel roughened layer is tightly combined with the carbon microsphere, so that the carbon material is not easy to fall off. Therefore, the heat absorption coating prepared by in-situ conversion provided by the invention has excellent heat absorption and corrosion resistance.
Preferably, in step (1), the cleaning is: the substrate was sequentially immersed in acetone, ethanol, and DI water, respectively ultrasonically washed for 5 minutes, and then rinsed with DI water.
Preferably, in step (1), the base material is selected from copper, titanium, iron, cobalt, nickel, molybdenum, tungsten, tantalum, zirconium, chromium, or an alloy of the foregoing metals.
Preferably, in step (1), the protective material is an organic material that can transmit light. Such as plastic sheets, adhesive tapes, PDMS sheets, PVP sheets.
Preferably, the thickness of the protective material is 0.2-1 mm.
Preferably, in step (2), the laser direct writing: samples were processed in a line sweep mode with a laser speed of 500-2000mm/s and a laser power of 10-30W for 10-40s.
Influence of the setting of parameters of the laser on the degree of carbonization: when the laser power is lower, the laser and the substrate have weaker action, the coarsening effect on the substrate is weaker, and meanwhile, higher energy cannot be generated to fully carbonize the protective material. When the laser power is too high, the laser and the substrate material act more strongly, so that a stronger sputtering effect is generated, and the carbon layer on the surface is erased.
In a second aspect of the invention, there is provided a heat absorbing coating prepared by the method described above.
In a third aspect of the invention, there is provided the use of a heat absorbing coating in the manufacture of a solar water heater.
The invention has the beneficial effects that:
(1) The invention adopts the laser direct writing method to convert the heat absorption coating in situ, realizes the conversion of the heat absorption coating on the surface of the metal substrate in situ in one step, has the characteristics of simple process and environmental friendliness, and simultaneously, the method is simple and suitable for mass production.
(2) The invention adopts the laser direct writing method to convert the heat absorption coating in situ, adopts only the laser light source in the equipment aspect, and has the characteristics of simple equipment and low cost compared with the method for preparing the heat absorption coating by magnetron sputtering.
(3) According to the invention, the metal substrate is roughened by laser penetrating through the surface of the protective material, the generated heat carbonizes the protective material, the roughening of the metal substrate and the carbonization of the protective material are realized in situ, and the heat absorption of the material is realized by in situ roughening and carbonization, so that the binding force between the heat absorption material and the metal substrate is high, and the problem that the heat absorption material is easy to fall off in the preparation of the heat absorption material by magnetron sputtering is avoided.
(4) The laser direct writing method is adopted to obtain the heat absorption coating through in-situ conversion, the laser and the metal substrate are separate systems, and the metal sheet substrate and the protective material do not need to be loaded in a fixed cavity or a container, so that the laser direct writing method can be suitable for in-situ conversion heat absorption coatings of metal substrates in different sizes and different states.
(5) The invention realizes the isolation of the metal substrate and air by a method of simply covering the metal substrate with the protective layer. No special operations such as vacuumizing are needed, so that oxidation during coarsening of the metal substrate is avoided. Meanwhile, when the coarsening of the metal substrate is realized through the organic protective layer by laser, the generated heat carbonizes the protective layer on the surface, and the carbonized protective layer has an anti-corrosion effect.
(6) The invention adopts laser roughening to realize the conversion of the heat absorption coating on the surface of the metal substrate, and can obtain the light absorption coatings with different roughening degrees simply by adjusting laser parameters.
Drawings
Fig. 1: example 1 schematic illustration of laser stainless steel surface in situ conversion endothermic coating, wherein 1, stainless steel sheet, 2, scotch tape, 3, laser beam.
Fig. 2: example 1 optical photograph of an in situ conversion endothermic coating on a stainless steel surface.
Fig. 3: example 1 scanning electron microscopy of in situ conversion endothermic coating on stainless steel surface, (a) scanning electron microscopy with scale of 50 μm, (b) scanning electron microscopy with scale of 1 μm.
Fig. 4 is a comparative photo-thermal performance test chart of the in-situ conversion heat absorption coating on the stainless steel surface in example 1.
FIG. 5 is a graph of corrosion resistance of the in situ conversion heat absorption coating of the stainless steel surface of example 1.
FIG. 6 is an optical photograph of an in situ conversion heat sink coating using a different sheet metal surface in example 2.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. 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 application belongs.
As described in the background art, in the prior art, a layer of coating is coated on a substrate such as stainless steel by different methods, and the coating is prepared secondarily by the method, so that the binding force is weak, and the substrate and the coating are easy to fall off. Based on this, the present invention provides a method for preparing an endothermic coating by in situ conversion. According to the invention, the transparent organic material is tightly attached to the surface of the substrate, the coarsening of the substrate can be realized by focusing the substrate by laser, and the carbon microspheres can be covered on the coarsening layer at the same time, so that the carbon material has good corrosion resistance; the roughening of the stainless steel realizes the heat absorption effect, and the problem that the heat absorption coating with weak binding force falls off does not exist; meanwhile, the stainless steel roughened layer and the carbon microspheres are tightly combined due to in-situ conversion, and the prepared material has heat absorption and corrosion resistance. The nanosecond laser is low in price, low in cost and high in universality.
The roughened substrate presents black and has good heat absorption effect, and meanwhile, the protective material is carbonized in the laser in-situ conversion process and becomes carbon microspheres to be attached to the roughened substrate surface, so that the method has better heat absorption effect. This is because the carbon material has an sp3, sp2, pi electron structure, photons in the light wave are all absorbed by it, a transition is generated and then energy is released back to the ground state, and heat is generated; meanwhile, the carbon microspheres are black, so that the photo-thermal conversion performance is better; from the perspective of heat radiation, the carbon anti-corrosion layer has low heat scattering and low heat loss, so that the coarsened substrate with the carbon microspheres shows more excellent light conversion effect. The carbon material has stable chemical property, is not easy to react with acid and alkali, and has good corrosion resistance because the method provided by the invention is in-situ conversion and the stainless steel roughened layer is tightly combined with the carbon microsphere. Therefore, the heat absorption coating prepared by in-situ conversion provided by the invention has excellent heat absorption and corrosion resistance.
In order to enable those skilled in the art to more clearly understand the technical scheme of the present application, the technical scheme of the present application will be described in detail with reference to specific embodiments.
The test materials used in the examples of the present invention are all conventional in the art and are commercially available.
Description: the PDMS solution comprises polydimethylsiloxane prepolymer and curing agent, which are commercially available and the manufacturer is Shanghai Ala Biochemical technology Co., ltd.
Example 1:
The embodiment discloses a method for converting a heat absorption coating on the surface of stainless steel by laser in situ, which comprises the following specific implementation steps as shown in fig. 1:
1) The stainless steel sheet was sequentially immersed in acetone, ethanol, DI water and ultrasonically cleaned for 5 minutes, and rinsed with DI water. And (5) drying after cleaning.
2) A PET transparent adhesive tape with the thickness of 0.2mm is tightly attached to the surface of a stainless steel sheet. The stainless steel sheet is below and the transparent adhesive tape is above.
3) The stainless steel sheet covered with the transparent adhesive tape is placed on a laboratory bench of a laser, parameters of laser direct writing are set, and a laser speed of 1000mm/s and a laser power line scanning mode of 20W are adopted to treat a sample for 20s.
The laser beam is focused on the stainless steel sheet through the transparent adhesive tape, the surface of the stainless steel sheet is roughened, heat generated during roughening enables the transparent adhesive tape to be carbonized, and a black sample with the micro-nano roughened surface of the stainless steel substrate and the carbon anti-corrosion layer covered on the surface (shown in figure 3) is obtained, wherein the black sample is shown in figure 2.
Compared with a heat absorption coating which coarsens the stainless steel surface only by laser, the embodiment adopts the stainless steel surface to coat the protective material laser in-situ conversion heat absorption coating, and has the advantages of good photo-thermal conversion performance and corrosion resistance. In order to verify the influence of the coarsening of the stainless steel substrate and the carbon corrosion-resistant layer on the photo-thermal conversion, a photo-thermal temperature test experiment is carried out by adopting a stainless steel sheet (sample 1) and a stainless steel coarsening sample (sample 2) as comparison samples of the sample (sample 3) of the embodiment; to verify the corrosion protection effect of the carbon corrosion protection layer, we performed a salt spray experiment using stainless steel roughened sample 2 as a control for sample 3 of this example.
Stainless steel substrate roughened sample 2 was prepared using the following steps:
1) The stainless steel sheet was sequentially immersed in acetone, ethanol, DI water and ultrasonically cleaned for 5 minutes, and rinsed with DI water. And (5) drying after cleaning.
2) The stainless steel sheet was placed on a laser laboratory bench, parameters for laser direct writing were set, and the sample surface treatment was focused in line scan mode for 20s using a laser speed of 1000mm/s and a laser power of 20W. A stainless steel substrate roughened sample (sample 2) was obtained without a carbon corrosion protection layer.
The stainless steel sheet (sample 3) and the comparative sample (samples 1 and 2) prepared in this example were each sampled to an area of 1cm 2, placed under a xenon light source, and then the optical density of the light source was measured by using a densitometer, so that the optical densities of the two samples were the same, and then an infrared temperature measuring instrument was turned on to measure the photo-thermal temperature, and the final photo-thermal temperature was recorded. As shown in fig. 4, the temperature of the sample of this example after absorbing light was raised to 164 ℃, while the comparative samples were 46.5 ℃ (sample 1) and 155 ℃ (sample 2), which indicates that the stainless steel surface coating prepared in this example has better photo-thermal conversion properties. It can also be seen that the improvement in the photothermal conversion performance results from the roughening treatment of the substrate material on the one hand and from the presence of the carbon anti-corrosive layer on the other hand.
According to the method, the protective material is carbonized in the laser in-situ conversion process and then changed into carbon microspheres which are attached to the roughened substrate surface, so that the method has a better heat absorption effect. This is because the carbon material has an sp3, sp2, pi electron structure, photons in the light wave are all absorbed by it, a transition is generated and then energy is released back to the ground state, and heat is generated; meanwhile, the carbon microspheres are black, so that the photo-thermal conversion performance is better; from the perspective of heat radiation, the carbon anti-corrosion layer has low heat scattering and low heat loss, so that the coarsened substrate with the carbon microspheres shows more excellent light conversion effect.
Salt spray exposure tests are adopted to judge the corrosion resistance of the in-situ conversion heat absorption coating of the protective material coated on the stainless steel surface of the embodiment. The stainless steel sheet (sample 3) and the comparative sample (sample 2) prepared in this example were sealed with a hot melt adhesive at untreated places, with each exposed area being 1cm 2 of the laser treated area. Two samples were placed in a salt spray apparatus and salt spray experiments were started for two days. And taking out the metal sheet, drying, and observing the surface corrosion condition. In this embodiment, the in-situ converted heat absorption layer did not have corrosion, the black surface was maintained, the comparative heat absorption layer had a large area of corrosion, and the color turned brown, as shown in fig. 5. The stainless steel surface coating prepared by the embodiment has better corrosion resistance.
The method is characterized in that the carbon material has stable chemical property, is not easy to react with acid and alkali, and has good corrosion resistance because the stainless steel roughened layer is tightly combined with the carbon microspheres through in-situ conversion. Therefore, the heat absorption coating prepared by in-situ conversion provided by the invention has excellent heat absorption and corrosion resistance.
Therefore, in the embodiment, the laser beam is adopted to coarsen the surface of the stainless steel sheet through the transparent adhesive tape, heat generated during coarsening enables the transparent adhesive tape to be carbonized, and the coarsening of the surface of the stainless steel is combined with the carbonization of the transparent adhesive tape to obtain a coarsened surface which is easier to absorb heat, so that better photo-thermal conversion is realized; meanwhile, the carbonized transparent adhesive tape is covered on the roughened stainless steel surface, and the stainless steel is protected from corrosion, so that the method for converting the heat-absorbing coating on the stainless steel surface by laser in situ is adopted in the embodiment, the method is simple, and the prepared heat-absorbing coating has the characteristics of heat absorption and corrosion resistance.
Example 2
This example is different from example 1 in that the metal substrate in step (1) is changed to a titanium sheet, a copper sheet, an iron sheet, a nickel sheet, an aluminum sheet and a molybdenum sheet. After laser in situ conversion of the endothermic coating, a sample of in situ conversion endothermic pictures of different metal surfaces was obtained as shown in fig. 6.
Example 3
The difference from example 1 is that the protective material was PDMS, a PDMS solution was spin-coated uniformly onto a stainless steel sheet, and then the PDMS was dried, the stainless steel sheet covered with the PDMS film was placed on a laser laboratory table, parameters for laser direct writing were set, and the sample was processed for 40s using a laser speed of 500mm/s and a laser power line sweep pattern of 10W, to obtain an endothermic coating.
Example 4
The difference from example 1 is that the protective material is a polyethylene film, the polyethylene film is closely attached to the substrate, a stainless steel sheet covered with the polyethylene film is placed on a laboratory table of a laser, parameters of laser direct writing are set, and the surface of the sample is treated in a line scanning mode for 10s by using a laser speed of 2000mm/s and a laser power of 30W, so as to obtain the heat absorbing coating.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (3)
1. A method of converting an endothermic coating in situ comprising the steps of:
(1) Firstly, cleaning and drying a substrate, and then tightly fixing a protective material on the surface of the substrate; the cleaning is as follows: sequentially immersing the substrate in acetone, ethanol and DI water, respectively ultrasonically cleaning for 5 minutes, and then flushing with the DI water; the substrate material is stainless steel sheet, titanium sheet, copper sheet, iron sheet, nickel sheet, aluminum sheet and molybdenum sheet; the protective material is PET transparent adhesive tape, PDMS or polyethylene film, and the thickness of the protective material is 0.2-1mm;
(2) Setting parameters of laser direct writing, scanning and irradiating the fixed protective material and the substrate, focusing the laser on the surface of the substrate, and coarsening the surface of the substrate, wherein the coarsening is as follows: processing the sample in a linear scanning mode with a laser speed of 500-2000mm/s and a laser power of 10-30W for 10-40s; and the heat generated simultaneously carbonizes the protective material to obtain the heat-absorbing coating with corrosion resistance.
2. A heat absorbing coating prepared by the method of claim 1.
3. Use of the heat absorbing coating of claim 2 for the preparation of a solar water heater.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08176650A (en) * | 1994-12-27 | 1996-07-09 | Nkk Corp | Laser carbonizing and quenching equipment |
| CN101768714A (en) * | 2010-02-09 | 2010-07-07 | 江苏大学 | Method for preparing thermal barrier coating by laser compound plasma spraying |
| CN102703894A (en) * | 2012-07-02 | 2012-10-03 | 华东交通大学 | Compound strengthening method for surface laser deposition of magnesium alloy |
| CN105934307A (en) * | 2014-01-27 | 2016-09-07 | 三井金属矿业株式会社 | Roughened copper foil, copper-clad laminate, and printed wiring board |
| CN107532272A (en) * | 2015-04-21 | 2018-01-02 | 东华隆株式会社 | The method for coarsening surface of base material, the surface treatment method of base material, spraying overlay film are coated to part and its manufacture method |
| CN108315711A (en) * | 2018-02-26 | 2018-07-24 | 南京航空航天大学 | A kind of nanosecond laser substrate pretreated method improving boron-doped diamond electrode film base binding performance |
| CN109473861A (en) * | 2017-09-08 | 2019-03-15 | 罗伯特·博世有限公司 | Integrating laser carbonization of the polymer coating in open-air atmosphere |
| CN113770546A (en) * | 2021-10-11 | 2021-12-10 | 上海莘芝光电科技有限公司东莞分公司 | Process for manufacturing three-dimensional circuit by laser etching and carbonizing plastic surface |
| CN114411116A (en) * | 2022-01-24 | 2022-04-29 | 陕西科技大学 | Method for growing graphene film on nickel-plated surface of copper metal substrate in situ by laser |
-
2022
- 2022-06-22 CN CN202210708897.8A patent/CN114888440B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08176650A (en) * | 1994-12-27 | 1996-07-09 | Nkk Corp | Laser carbonizing and quenching equipment |
| CN101768714A (en) * | 2010-02-09 | 2010-07-07 | 江苏大学 | Method for preparing thermal barrier coating by laser compound plasma spraying |
| CN102703894A (en) * | 2012-07-02 | 2012-10-03 | 华东交通大学 | Compound strengthening method for surface laser deposition of magnesium alloy |
| CN105934307A (en) * | 2014-01-27 | 2016-09-07 | 三井金属矿业株式会社 | Roughened copper foil, copper-clad laminate, and printed wiring board |
| CN107532272A (en) * | 2015-04-21 | 2018-01-02 | 东华隆株式会社 | The method for coarsening surface of base material, the surface treatment method of base material, spraying overlay film are coated to part and its manufacture method |
| CN109473861A (en) * | 2017-09-08 | 2019-03-15 | 罗伯特·博世有限公司 | Integrating laser carbonization of the polymer coating in open-air atmosphere |
| CN108315711A (en) * | 2018-02-26 | 2018-07-24 | 南京航空航天大学 | A kind of nanosecond laser substrate pretreated method improving boron-doped diamond electrode film base binding performance |
| CN113770546A (en) * | 2021-10-11 | 2021-12-10 | 上海莘芝光电科技有限公司东莞分公司 | Process for manufacturing three-dimensional circuit by laser etching and carbonizing plastic surface |
| CN114411116A (en) * | 2022-01-24 | 2022-04-29 | 陕西科技大学 | Method for growing graphene film on nickel-plated surface of copper metal substrate in situ by laser |
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