CN117139114A - Nano SiO on surface of metal for building 2 High-performance organic coating and preparation method thereof - Google Patents
Nano SiO on surface of metal for building 2 High-performance organic coating and preparation method thereof Download PDFInfo
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- CN117139114A CN117139114A CN202311423170.6A CN202311423170A CN117139114A CN 117139114 A CN117139114 A CN 117139114A CN 202311423170 A CN202311423170 A CN 202311423170A CN 117139114 A CN117139114 A CN 117139114A
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- 239000002184 metal Substances 0.000 title claims abstract description 85
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 85
- 238000000576 coating method Methods 0.000 title claims abstract description 67
- 239000011248 coating agent Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 28
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 17
- 229920005601 base polymer Polymers 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000010892 electric spark Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 9
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 9
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 239000003085 diluting agent Substances 0.000 claims description 5
- 239000003350 kerosene Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000009396 hybridization Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000005260 corrosion Methods 0.000 abstract description 13
- 239000007769 metal material Substances 0.000 abstract description 7
- 239000004566 building material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- XZWYZXLIPXDOLR-UHFFFAOYSA-N metformin Chemical compound CN(C)C(=N)NC(N)=N XZWYZXLIPXDOLR-UHFFFAOYSA-N 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
-
- 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
- B05D7/14—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 to metal, e.g. car bodies
-
- 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
- B05D7/24—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 for applying particular liquids or other fluent materials
-
- 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
- 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
-
- 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
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
- B05D2518/12—Ceramic precursors (polysiloxanes, polysilazanes)
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a nano SiO on the surface of a metal for building 2 A high-performance organic coating and a preparation method thereof belong to the technical field of building material coatings. Aiming at the problems of weak corrosion resistance and abrasion resistance of the coating and poor bonding strength of the coating and the surface of the metal material at the present stage, the invention uses the polydimethylsiloxane and the silane coupling agent GPTMS is prepared into a base polymer; in nano SiO 2 Adding the sol serving as a reinforcing phase into a base polymer to obtain hybrid sol; performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated; uniformly spraying the hybrid sol on the metal surface by adopting an air spraying method, and curing to obtain the nano SiO on the metal surface 2 High performance organic coatings. The roughness of the metal surface can be effectively controlled by adopting the electric spark ultrasonic composite finishing technology, impurities and pollutants existing on the metal can be effectively removed, more attachment points are added in the coating spraying process, and the bonding strength of the coating is greatly improved.
Description
Technical Field
The invention belongs to the technical field of building materials, and in particular relates to a metal surface nano SiO for building 2 A high-performance organic coating and a preparation method thereof.
Background
With the rapid development of modern industry, new requirements are put forward on the performances of corrosion resistance, weather resistance, abrasion resistance and the like of building materials. Metals have found wide use and irreplaceability in construction as high strength, free, lightweight rebuilding materials. However, building metals often need to be exposed outdoors, and the corrosion caused by the exposure has serious harm to the metal materials, so that the service life of the metal materials is greatly reduced, and the safety of the whole building member is seriously affected.
The antifouling and anticorrosion performances of the building metal material are improved, the service life of the metal material is prolonged, and the most common method is to spray-coat the metal surface. The spraying raw materials mainly used in China at the present stage have certain pollution to the environment, the utilization rate of the paint is not high, the bonding strength between a coating formed by the paint and the metal surface is poor, the paint is easy to peel off, and a good protection effect cannot be achieved.
Disclosure of Invention
Aiming at the problems of weak corrosion resistance and abrasion resistance of the coating at the present stage and poor bonding strength with the surface of a metal material, the invention provides the nano SiO on the surface of the metal for building 2 A high-performance organic coating and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
metal for constructionSurface nano SiO 2 The preparation method of the high-performance organic coating comprises the following steps:
step 1, preparing polydimethylsiloxane and a silane coupling agent GPTMS into a base polymer;
step 2, using nano SiO 2 Adding the sol serving as a reinforcing phase into a base polymer, adjusting the pH to be neutral, and stirring uniformly to obtain hybrid sol;
step 3, performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated, controlling the roughness of the metal surface, and then cleaning and drying;
step 4, uniformly spraying the hybridization sol on the metal surface treated in the step 3 by adopting an air spraying method, and then curing to obtain the metal surface nano SiO 2 High performance organic coatings.
Further, in the step 1, the mass ratio of the polydimethylsiloxane to the silane coupling agent (GPTMS) is 2:1-4:1.
Further, the nano SiO in the step 2 2 The mass ratio of the sol to the base polymer is 1:5-1:9.
Further, the specific method for adjusting the pH value to be neutral and stirring in the step 2 is as follows: the pH was adjusted to 7 and then stirred at room temperature for 2h.
Further, the specific method for performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated in the step 3 is as follows: fixing the metal to be treated on a conductive platform, and connecting a spark output line with the conductive platform; the front end of an H60-2 brass rod of phi 4 is turned into 60 degrees and is used as a tool head to be connected with an amplitude transformer which is connected with an ultrasonic generator; mixing grinding paste with the granularity of W8-W10 with kerosene as a grinding diluent, wherein the proportion is 15g/L; the ultrasonic vibration frequency of the electrode is 50 kHz, and the total ultrasonic grinding time is 16-18 min.
Further, in the step 3, the roughness of the metal surface is controlled to be 20-80 μm. The coating speed is high, the coating thickness is thin, the roughness is smaller, and the bonding strength is enough; the coating has low speed, thick coating thickness and larger roughness, and more attachment points and specific surface area of attachment are needed as the bonding interface of the coating and the metal matrix.
Further, in the step 3, the metal after being washed is washed by ultrasonic vibration, the ultrasonic frequency is 100 kHz, the washing time is 4-5 min, the metal after being washed is dried, the drying temperature is 90-100 ℃, and the drying time is 6-9 min.
Further, in the step 4, the specific method for uniformly spraying the hybrid sol on the metal surface treated in the step 3 by adopting an air spraying method is as follows: 150-200 m of air spraying gun is adopted 2 And (3) spraying the hybrid sol prepared in the step (2) on the metal surface treated in the step (3) at the spraying speed of/h.
Further, the curing temperature in the step 4 is 120-160 ℃, and the curing time is 20-30 min.
The nano SiO on the metal surface obtained by the preparation method 2 High performance organic coatings.
Compared with the prior art, the invention has the following advantages:
1. the base polymer prepared by adopting the polydimethylsiloxane and the silane coupling agent (GPTMS) is very friendly to the environment, and the added nano SiO 2 Better enhanced phase wettability, nano SiO 2 Can be uniformly distributed in the whole coating, and finally forms an organic/inorganic hybrid coating with excellent performance;
2. the invention adopts the electric spark ultrasonic composite finishing processing technology to treat the metal surface, can effectively remove some impurities and pollutants existing on the metal, and obtain a smooth and clean metal surface, so that the interface is more tightly bonded in the connecting process, and no pollutant exists in the middle. The electric spark ultrasonic composite finishing technology can effectively control the roughness of the metal surface, and increase more attachment points for the coating spraying process, thereby greatly improving the bonding strength of the coating and the metal surface;
3、SiO 2 the nano SiO nano-composite material has strong chemical property, has a thermal expansion coefficient similar to that of metal, can well relieve the problems that a coating material may crack and the like, and adopts nano SiO 2 As a coating reinforcing phase, the corrosion resistance and the wear resistance of the material can be greatly improved;
4. the metal surface nano SiO of the invention 2 The preparation method of the high-performance organic coating is simple and feasible, and can be used for preparing building coatings.
Drawings
FIG. 1 is a surface topography of an organic coating of the present invention.
Detailed Description
Example 1
Nano SiO on surface of metal for building 2 The preparation method of the high-performance organic coating comprises the following steps:
step 1, preparing a base polymer from polydimethylsiloxane and a silane coupling agent (GPTMS) in a mass ratio of 2:1;
step 2, using nano SiO 2 The sol is added as a reinforcing phase to the base polymer (nano SiO) 2 The mass ratio of the sol to the base polymer is 1:5), then the pH is regulated to 7, and the mixture is stirred for 2 hours at room temperature until the mixture is stirred uniformly, so as to obtain hybrid sol;
step 3, performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated, controlling the roughness of the surface of the metal, and then cleaning and drying specifically comprises the following steps: fixing the metal to be treated on a conductive platform, and connecting a spark output line with the conductive platform; the front end of an H60-2 brass rod of phi 4 is turned into 60 degrees and is used as a tool head to be connected with an amplitude transformer which is connected with an ultrasonic generator; mixing grinding paste with the granularity of W8 with kerosene as grinding diluent with the proportion of 15g/L; the ultrasonic vibration frequency of the electrode is 50 kHz, and the total ultrasonic grinding time is 18 min. Controlling the roughness of the metal surface to be 20 mu m; ultrasonic vibration cleaning is adopted, the ultrasonic frequency is 100 kHz, the cleaning time is 4 min, the metal after the cleaning is finished is dried, the drying temperature is 90 ℃, and the drying time is 9 min;
step 4, adopting an air spraying gun to spray the paint at a speed of 150 m 2 Spraying the hybrid sol prepared in the step 2 on the metal surface treated in the step 3 uniformly at the spraying speed of/h, and curing the coating surface for 30 min at 120 ℃ by using a heating fan to obtain the metal surface nano SiO 2 The high performance organic coating and the corrosion resistance test results are shown in Table 1.
Example 2
Nano SiO on surface of metal for building 2 The preparation method of the high-performance organic coating comprises the following steps:
step 1, preparing a base polymer from polydimethylsiloxane and a silane coupling agent (GPTMS) in a mass ratio of 4:1;
step 2, using nano SiO 2 The sol is added as a reinforcing phase to the base polymer (nano SiO) 2 The mass ratio of the sol to the base polymer is 1:9), then the pH is regulated to 7, and the mixture is stirred for 2 hours at room temperature until the mixture is stirred uniformly, so as to obtain hybrid sol;
step 3, performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated, controlling the roughness of the surface of the metal, and then cleaning and drying specifically comprises the following steps: fixing the metal to be treated on a conductive platform, and connecting a spark output line with the conductive platform; the front end of an H60-2 brass rod of phi 4 is turned into 60 degrees and is used as a tool head to be connected with an amplitude transformer which is connected with an ultrasonic generator; mixing grinding paste with the granularity of W10 with kerosene as grinding diluent with the proportion of 15g/L; the ultrasonic vibration frequency of the electrode is 50 kHz, and the total ultrasonic grinding time is 16 min. Controlling the roughness of the metal surface to be 80 mu m; ultrasonic vibration cleaning is adopted, the ultrasonic frequency is 100 kHz, the cleaning time is 5 min, the metal after the cleaning is finished is dried, the drying temperature is 100 ℃, and the drying time is 6 min;
step 4, adopting an air spraying gun to spray the paint at a speed of 200m 2 Spraying the hybrid sol prepared in the step 2 on the metal surface treated in the step 3 uniformly at the spraying speed of/h, and curing the coating surface at 140 ℃ for 25 min by using a heating fan to obtain the metal surface nano SiO 2 The high performance organic coating and the corrosion resistance test results are shown in Table 1.
Example 3
Nano SiO on metal surface 2 The preparation method of the high-performance organic coating comprises the following steps:
step 1, preparing a base polymer from polydimethylsiloxane and a silane coupling agent GPTMS in a mass ratio of 3:1;
step 2, using nano SiO 2 The sol is added into the basic polymer as a reinforcing phaseNano SiO 2 The mass ratio of the sol to the base polymer is 1:7), then the pH is adjusted to 7, and the mixture is stirred at room temperature for 2h to be stirred uniformly to obtain hybrid sol;
step 3, performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated, controlling the roughness of the surface of the metal, and then cleaning and drying specifically comprises the following steps: fixing the metal to be treated on a conductive platform, and connecting a spark output line with the conductive platform; the front end of an H60-2 brass rod of phi 4 is turned into 60 degrees and is used as a tool head to be connected with an amplitude transformer which is connected with an ultrasonic generator; mixing grinding paste with the granularity of W9 with kerosene as grinding diluent with the proportion of 15g/L; the ultrasonic vibration frequency of the electrode is 50 kHz, and the total ultrasonic grinding time is 17 min. The roughness of the metal surface was controlled to 50 μm. Ultrasonic vibration cleaning is adopted, the ultrasonic frequency is 100 kHz, the cleaning time is 4.5 min, the metal after the cleaning is finished is dried, the drying temperature is 95 ℃, and the drying time is 8 min;
step 4, adopting an air spraying gun to carry out 180-180 m 2 Spraying the hybrid sol prepared in the step 2 on the metal surface treated in the step 3 uniformly at the spraying speed of/h, and curing the coating surface for 20 min at 160 ℃ by using a heating fan to obtain the metal surface nano SiO 2 High performance organic coatings. As shown in the surface topography diagram of the organic coating of the invention in FIG. 1, the whole organic coating can be closely adhered to the surface of the metal material without bare leakage, which indicates that the bonding strength between the organic coating and the metal surface is higher, and the corrosion resistance and the wear resistance can be better. The corrosion resistance test results are shown in Table 1.
TABLE 1 results of Corrosion resistance tests for coatings of different examples
| Micro/nano mechanical properties | Weight loss rate at 500 DEG C | Resistant to 25% hydrochloric acid | 25% sodium hydroxide resistance | |
| Example 1 | 0.56GPa | 36% | 1090h | 980h |
| Example 2 | 0.49GPa | 32% | 1120h | 930h |
| Example 3 | 0.64GPa | 30% | 1200h | 1080h |
Firstly, the micro/nano mechanical property of the coating obtained by the embodiment is tested by nano indentation, and the maximum micro/nano mechanical strength of the coating reaches 0.64GPa, which indicates that the surface coating has good strength and excellent shock resistance. And secondly, the weight loss rate of each coating at 500 ℃ is measured, and the results are 30% -40%, which shows that the high-temperature stability of the coating is good, and the bonding strength between the coating and the substrate is high. And the coating prepared by the invention has good corrosion resistance through corrosion resistance test under an acidic condition (25% hydrochloric acid resistance) and an alkaline condition (25% sodium hydroxide resistance). It is also shown that the coatings produced according to the invention can be used in the relevant building material sector.
In summary, through the electric spark ultrasonic composite finishing technology, on one hand, some oxides and stains existing on the surface of the original metal can be removed to obtain a clean connecting interface; meanwhile, the surface roughness of the metal is changed, the specific surface area between the metal and the coating is improved, and the bonding strength between the coating and the metal matrix is increased. Nano SiO is added 2 The reinforcing phase has strong nano effect, can be filled into micropores and defects in the coating, improves the compactness of the coating, increases the corrosion resistance of the material, and can also prevent the diffusion of corrosive ions.
What is not described in detail in the present specification belongs to the prior art known to those skilled in the art. While the foregoing describes illustrative embodiments of the present invention to facilitate an understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, but is to be construed as protected by the accompanying claims insofar as various changes are within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (10)
1. Nano SiO on surface of metal for building 2 The preparation method of the high-performance organic coating is characterized by comprising the following steps of:
step 1, preparing polydimethylsiloxane and a silane coupling agent into a base polymer;
step 2, using nano SiO 2 Adding the sol serving as a reinforcing phase into a base polymer, regulating the pH to be neutral, and stirring uniformly to obtain hybrid sol;
step 3, performing electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated, controlling the roughness of the metal surface, and then cleaning and drying;
step 4, uniformly spraying the hybridization sol on the metal surface treated in the step 3 by adopting an air spraying method, and then curing to obtain the metal surface nano SiO 2 High performance withAnd (5) coating.
2. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the mass ratio of the polydimethylsiloxane to the silane coupling agent in the step 1 is 2:1-4:1.
3. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the nano SiO in the step 2 2 The mass ratio of the sol to the base polymer is 1:5-1:9.
4. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the specific method for regulating the pH value to be neutral and stirring in the step 2 is as follows: the pH was adjusted to 7 and then stirred at room temperature for 2h.
5. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the specific method for carrying out electric spark ultrasonic composite finishing treatment on the surface of the metal to be treated in the step 3 is as follows: fixing the metal to be treated on a conductive platform, and connecting a spark output line with the conductive platform; the front end of an H60-2 brass rod of phi 4 is turned into 60 degrees and is used as a tool head to be connected with an amplitude transformer which is connected with an ultrasonic generator; mixing grinding paste with the granularity of W8-W10 with kerosene as a grinding diluent, wherein the proportion is 15g/L; the ultrasonic vibration frequency of the electrode is 50 kHz, and the total ultrasonic grinding time is 16-18 min.
6. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the roughness of the metal surface is controlled to be 20-80 mu m in the step 3.
7. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that in the step 3, cleaning and drying are carried out through ultrasonic vibration, the ultrasonic frequency is 100 kHz, the cleaning time is 4-5 min, the metal after the cleaning is finished is dried, the drying temperature is 90-100 ℃, and the drying time is 6-9 min.
8. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the specific method for uniformly spraying the hybrid sol on the metal surface treated in the step 3 by adopting an air spraying method in the step 4 is as follows: an air spraying gun is adopted for 150-200 m 2 And (3) spraying the hybrid sol prepared in the step (2) on the metal surface treated in the step (3) at the spraying speed of/h.
9. The nano-SiO on the surface of a metal for construction according to claim 1 2 The preparation method of the high-performance organic coating is characterized in that the curing temperature in the step 4 is 120-160 ℃, and the curing time is 20-30 min.
10. A nano SiO based on the metal surface for construction according to any one of claims 1 to 9 2 Metal surface nano SiO obtained by preparation method of high-performance organic coating 2 High performance organic coatings.
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| CN202311423170.6A CN117139114A (en) | 2023-10-31 | 2023-10-31 | Nano SiO on surface of metal for building 2 High-performance organic coating and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015873A (en) * | 2006-03-12 | 2007-08-15 | 哈尔滨工业大学（威海） | Inverted electric spark ultrasonic composite processing method and apparatus |
| CN109181530A (en) * | 2018-08-31 | 2019-01-11 | 吉林大学 | Bis- compound super-hydrophobic coats of scale silica of dimethyl silicone polymer-and forming method thereof |
| CN111068997A (en) * | 2019-12-09 | 2020-04-28 | 江苏中圣压力容器装备制造有限公司 | Preparation method of coating for realizing super-hydrophobicity of condensation heat exchange tube and condensation heat exchange tube |
| CN111085413A (en) * | 2019-12-10 | 2020-05-01 | 江苏中圣压力容器装备制造有限公司 | Method for realizing stable dropwise condensation on heat exchange surface and efficient heat exchanger |
| CN113631281A (en) * | 2019-02-14 | 2021-11-09 | 陶氏东丽株式会社 | Organopolysiloxane cured film, use thereof, method for producing same, and apparatus for producing same |
| CN113976409A (en) * | 2021-11-17 | 2022-01-28 | 北京航空航天大学 | Preparation method of self-healing super-hydrophobic magnesium alloy anticorrosive coating |
| CN114643462A (en) * | 2022-05-20 | 2022-06-21 | 太原理工大学 | Titanium alloy/stainless steel composite board and preparation method thereof |
| CN115608586A (en) * | 2022-10-25 | 2023-01-17 | 江苏理工学院 | Preparation method of simple controllable super-wear-resistant super-hydrophobic surface |
-
2023
- 2023-10-31 CN CN202311423170.6A patent/CN117139114A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015873A (en) * | 2006-03-12 | 2007-08-15 | 哈尔滨工业大学（威海） | Inverted electric spark ultrasonic composite processing method and apparatus |
| CN109181530A (en) * | 2018-08-31 | 2019-01-11 | 吉林大学 | Bis- compound super-hydrophobic coats of scale silica of dimethyl silicone polymer-and forming method thereof |
| CN113631281A (en) * | 2019-02-14 | 2021-11-09 | 陶氏东丽株式会社 | Organopolysiloxane cured film, use thereof, method for producing same, and apparatus for producing same |
| CN111068997A (en) * | 2019-12-09 | 2020-04-28 | 江苏中圣压力容器装备制造有限公司 | Preparation method of coating for realizing super-hydrophobicity of condensation heat exchange tube and condensation heat exchange tube |
| CN111085413A (en) * | 2019-12-10 | 2020-05-01 | 江苏中圣压力容器装备制造有限公司 | Method for realizing stable dropwise condensation on heat exchange surface and efficient heat exchanger |
| CN113976409A (en) * | 2021-11-17 | 2022-01-28 | 北京航空航天大学 | Preparation method of self-healing super-hydrophobic magnesium alloy anticorrosive coating |
| CN114643462A (en) * | 2022-05-20 | 2022-06-21 | 太原理工大学 | Titanium alloy/stainless steel composite board and preparation method thereof |
| CN115608586A (en) * | 2022-10-25 | 2023-01-17 | 江苏理工学院 | Preparation method of simple controllable super-wear-resistant super-hydrophobic surface |
Non-Patent Citations (1)
| Title |
|---|
| 李路海等: "《渗透汽化在清洁可再生能源领域的应用》", 厦门大学出版社, pages: 310 - 314 * |
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