CN113667975B - Preparation method of hydrogen corrosion-resistant double-layer coating - Google Patents
Preparation method of hydrogen corrosion-resistant double-layer coating Download PDFInfo
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- CN113667975B CN113667975B CN202110993124.4A CN202110993124A CN113667975B CN 113667975 B CN113667975 B CN 113667975B CN 202110993124 A CN202110993124 A CN 202110993124A CN 113667975 B CN113667975 B CN 113667975B
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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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
- C09D127/00—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 a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- 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
- C23C18/02—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 by thermal decomposition
- C23C18/08—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 by thermal decomposition characterised by the deposition of metallic material
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- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
A preparation method of a hydrogen corrosion resistant double-layer coating comprises the following steps: s1, coating an acetone solution of metal carbonyl on the surface of a clean rotor, and then heating to obtain a metal coating; s2, arranging a polymer coating on the metal coating, wherein the polymer coating is prepared from the following raw materials in parts by mass: polytetrafluoroethylene: 60-80 parts; polyether ether ketone: 4-8 parts; anhydrous acetone: 30-40 parts; acrylic resin: 4-8 parts; emulsifier: 2-4 parts. This application has formed a not smooth surface through setting up carbonyl metal pyrolysis for when forming first layer coating, also form a articulamentum, can carry out inseparabler relation with the polymer coating, avoid the polymer coating to cause to peel off or drop at the high-speed rotation of rotor and extrusion in-process.
Description
Technical Field
The application relates to a preparation method of a hydrogen corrosion resistant double-layer coating.
Background
For positive displacement blowers, it relies on the pressure change caused by the volume change between the rotors during rotation of the rotors to provide a pressurized transfer of the gas being transferred, in which process there is a high degree of sealing between the rotors that is produced by pure seal compression. In the process of hydrogen transmission, hydrogen corrosion may be generated between hydrogen and metal, and the hydrogen corrosion can greatly reduce the strength of a rotor to cause damage of the rotor, so that some improvement schemes are provided at present, and a high-molecular coating is arranged on the rotor. However, the durability and stability of the coating layer is problematic due to the high-speed operation characteristics of the rotor.
Disclosure of Invention
In order to solve the above problems, the present application proposes a method for preparing a hydrogen corrosion resistant double-layer coating, comprising the steps of:
s1, coating an acetone solution of metal carbonyl on the surface of a clean rotor, and then heating to obtain a metal coating;
s2, arranging a polymer coating on the metal coating, wherein the polymer coating is prepared from the following raw materials in parts by mass: polytetrafluoroethylene: 60-80 parts; polyether ether ketone: 4-8 parts; anhydrous acetone: 30-40 parts; acrylic resin: 4-8 parts; emulsifier: 2-4 parts. This application has formed a not smooth surface through setting up the pyrolysis of carbonyl metal for when forming first layer coating, also form a articulamentum, can carry out inseparabler contact with the polymer coating, avoid the polymer coating to cause at the high-speed rotation of rotor and extrusion in-process and peel off or drop.
Preferably, the thickness of the polymer coating is 30-50 μm.
Preferably, the emulsifier is sodium dodecyl sulfate.
Preferably, the raw material of the polymer coating further comprises the following nickel carbonyl in parts by mass: 1-3 parts.
Preferably, the metal carbonyl comprises nickel carbonyl and cobalt carbonyl, and the mass ratio of the nickel carbonyl to the cobalt carbonyl is 1: 2-4. The application discloses carbonyl metal adopts nickel and cobalt, finds that it has better combining ability with the rotor surface in the use, consequently also can play better connection effect, has improved the wholeness between coating and the rotor body, has improved the time that can use greatly.
Preferably, in S1, the mass concentration of the metal carbonyl in acetone is 10-15 wt%.
Preferably, the step of S2 includes the following steps:
s21, placing polyether-ether-ketone, anhydrous acetone, acrylic resin, an emulsifier and carbonyl nickel in a high-speed mixer under the condition of isolating air for primary mixing to finish primary mixing;
s22, placing polytetrafluoroethylene in the mixture obtained in the S21, performing ultrasonic vibration, and then placing the mixture in a high-speed mixer for secondary mixing to obtain a spraying raw material;
s23, spraying the spraying raw materials to obtain the polymer coating. The application adopts the mode of fully mixing other substrates firstly and then mixing polytetrafluoroethylene therein, and can basically provide a substrate with a large relative amount in the early stage so as to be beneficial to dispersing the polytetrafluoroethylene and enable the dispersibility of the polytetrafluoroethylene as a main functional component to be better.
Preferably, the operation time of the primary mixing is 10-15 h; the operation time of the ultrasonic vibration is 1-2 h; the operation time of the secondary mixing is 6-8 h.
Preferably, the spraying is electrostatic spraying.
Preferably, the macromolecule mixed coating is obtained by sand blasting, cleaning, oil removing, electrostatic spraying and heating curing on the surface of the rotor.
This application can bring following beneficial effect:
1. the method has the advantages that the non-smooth surface is formed by the pyrolysis of the carbonyl metal, so that a connecting layer is formed while the first coating is formed, the connecting layer can be closely connected with the high-molecular coating, and the high-molecular coating is prevented from being peeled or falling off in the high-speed rotation and extrusion processes of the rotor;
2. the carbonyl metal adopts nickel and cobalt, and the carbonyl metal has better binding capacity with the surface of the rotor in the using process, so that the carbonyl metal can play a better role in connection, the integrity between the coating and the rotor body is improved, and the service life is greatly prolonged;
3. this application adopts earlier to carry out intensive mixing with other substrates, then mixes polytetrafluoroethylene wherein mode, can provide the many substrates of a relative volume basically earlier to be favorable to dispersing polytetrafluoroethylene, can make main functional component polytetrafluoroethylene dispersibility better.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present application will be explained in detail through the following embodiments.
The present application illustrates a specific embodiment of the present application by way of examples of synthesis and characterization, the specific synthesis steps being as follows:
s1, coating an acetone solution of metal carbonyl on the surface of a clean rotor, and then heating to 300 ℃ to obtain a metal coating; the mass concentration of the metal carbonyl in the acetone is 10-15 wt%;
s2, arranging a polymer coating on the metal coating, wherein the polymer coating is synthesized according to the following steps:
s21, placing polyether-ether-ketone, anhydrous acetone, acrylic resin, an emulsifier and carbonyl nickel in a high-speed mixer under the condition of isolating air for primary mixing to finish primary mixing; the operation time of the primary mixing is 10-15 h;
the composition of the material is shown in table 1, and the operating parameters are shown in table 2;
table 1:
s22, placing polytetrafluoroethylene in the mixture obtained in the S21, performing ultrasonic vibration, and then placing the mixture in a high-speed mixer for secondary mixing to obtain a spraying raw material; the operation time of the ultrasonic vibration is 1-2 h; the operation time of the secondary mixing is 6-8 h;
s23, spraying the spraying raw materials to obtain a polymer coating, wherein electrostatic spraying is adopted for spraying. Firstly, sand blasting, cleaning and oil removing are carried out on the surface of the rotor, and then electrostatic spraying and heating curing are carried out to obtain the polymer mixed coating.
Table 2:
s3, carrying out the following parameter characterization on the mixed coating: thickness, coefficient of friction, wear rate and impact resistance (GB/T1732 + 1993) as shown in Table 3.
| Serial number | Coefficient of friction | Wear rate (10)-8mm3/Nm) | Impact resistance | Impact resistance (double mass impact) |
| 1 | 0.07 | 0.18 | Without cracks | Without cracks |
| 2 | 0.06 | 0.09 | Without cracks | Without cracks |
| 3 | 0.11 | 0.15 | Without cracks | Without cracks |
| 4 | 0.26 | 1.26 | Without cracks | With fine lines |
| 5 | 0.22 | 1.13 | Fine cracks | Falling off |
| 6 | 0.35 | 1.78 | Without cracks | Without cracks |
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to 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 scope of the claims of the present application.
Claims (8)
1. A preparation method of a hydrogen corrosion resistant double-layer coating is characterized by comprising the following steps: the method comprises the following steps:
s1, coating an acetone solution of metal carbonyl on the surface of a clean rotor, and then heating to obtain a metal coating; the metal carbonyl comprises nickel carbonyl and cobalt carbonyl, and the mass ratio of the nickel carbonyl to the cobalt carbonyl is 1: 2-4;
s2, arranging a polymer coating on the metal coating, wherein the polymer coating is prepared from the following raw materials in parts by mass: polytetrafluoroethylene: 60-80 parts; polyether ether ketone: 4-8 parts; anhydrous acetone: 30-40 parts; acrylic resin: 4-8 parts; emulsifier: 2-4 parts; nickel carbonyl: 1-3 parts.
2. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 1, wherein: the thickness of the polymer coating is 30-50 μm.
3. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 1, wherein: the emulsifier is sodium dodecyl sulfate.
4. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 1, wherein: in S1, the mass concentration of the metal carbonyl in acetone is 10-15 wt%.
5. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 1, wherein: the following steps are included in S2:
s21, placing polyether-ether-ketone, anhydrous acetone, acrylic resin, an emulsifier and carbonyl nickel in a high-speed mixer under the condition of isolating air for primary mixing to finish primary mixing;
s22, placing polytetrafluoroethylene in the mixture obtained in the S21, performing ultrasonic vibration, and then placing the mixture in a high-speed mixer for secondary mixing to obtain a spraying raw material;
s23, spraying the spraying raw materials to obtain the polymer coating.
6. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 5, wherein: the operation time of the primary mixing is 10-15 h; the operation time of the ultrasonic vibration is 1-2 h; the operation time of the secondary mixing is 6-8 h.
7. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 5, wherein: the spraying adopts electrostatic spraying.
8. The method for preparing a hydrogen-etching resistant double-layer coating according to claim 7, wherein: firstly, sand blasting, cleaning and oil removing are carried out on the surface of the rotor, and then electrostatic spraying and heating curing are carried out to obtain the polymer mixed coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993124.4A CN113667975B (en) | 2021-08-25 | 2021-08-25 | Preparation method of hydrogen corrosion-resistant double-layer coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993124.4A CN113667975B (en) | 2021-08-25 | 2021-08-25 | Preparation method of hydrogen corrosion-resistant double-layer coating |
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| Publication Number | Publication Date |
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| CN113667975A CN113667975A (en) | 2021-11-19 |
| CN113667975B true CN113667975B (en) | 2022-05-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005046799A1 (en) * | 2005-09-30 | 2007-04-05 | Schaeffler Kg | Sliding plate for use in clamp body-free wheel clutch, has nickel-phosphorus-coating provided as wear-resistant coating, where nickel-intermediate coating is formed between base material and nickel-phosphorus-coating |
| CN102575115A (en) * | 2009-09-30 | 2012-07-11 | E.I.内穆尔杜邦公司 | An anticorrosion coating composition, an anticorrosion film and an anticorrosive article |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201213101A (en) * | 2010-09-29 | 2012-04-01 | Hon Hai Prec Ind Co Ltd | Roller |
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- 2021-08-25 CN CN202110993124.4A patent/CN113667975B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005046799A1 (en) * | 2005-09-30 | 2007-04-05 | Schaeffler Kg | Sliding plate for use in clamp body-free wheel clutch, has nickel-phosphorus-coating provided as wear-resistant coating, where nickel-intermediate coating is formed between base material and nickel-phosphorus-coating |
| CN102575115A (en) * | 2009-09-30 | 2012-07-11 | E.I.内穆尔杜邦公司 | An anticorrosion coating composition, an anticorrosion film and an anticorrosive article |
Non-Patent Citations (1)
| Title |
|---|
| 羰基金属复合材料的研究与应用;聂俊辉 等;《粉末冶金工业》;20080430;第18卷(第2期);第47页 * |
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Address after: 264000 Room 302, No. 331 Changjiang Road, Yantai Economic and Technological Development Zone, Shandong Province Patentee after: YANTAI DONGDE INDUSTRIAL Co.,Ltd. Address before: Xingjiating Town, Yantai City, Shandong Province Patentee before: YANTAI DONGDE INDUSTRIAL Co.,Ltd. |