CN113278332B - Valve oil seal coating material for methanol engine, valve oil seal and automobile - Google Patents
Valve oil seal coating material for methanol engine, valve oil seal and automobile Download PDFInfo
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- CN113278332B CN113278332B CN202110458825.8A CN202110458825A CN113278332B CN 113278332 B CN113278332 B CN 113278332B CN 202110458825 A CN202110458825 A CN 202110458825A CN 113278332 B CN113278332 B CN 113278332B
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- Prior art keywords
- oil seal
- valve oil
- coating material
- methanol
- engine
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 177
- 239000011248 coating agent Substances 0.000 title claims abstract description 48
- 238000000576 coating method Methods 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 title claims abstract description 37
- 239000003921 oil Substances 0.000 claims abstract description 85
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 9
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002736 nonionic surfactant Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 125000005372 silanol group Chemical group 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000654 additive Substances 0.000 abstract description 10
- 230000000996 additive effect Effects 0.000 abstract description 10
- 230000008961 swelling Effects 0.000 abstract description 10
- 239000010705 motor oil Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 description 6
- 239000003502 gasoline Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 125000005376 alkyl siloxane group Chemical group 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000002522 swelling effect Effects 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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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
- 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
-
- 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
- C09D7/47—Levelling agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Material Composition (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention relates to a valve oil seal coating material for a methanol engine, a valve oil seal and an automobile, wherein the coating material comprises polytetrafluoroethylene emulsion and an additive, and the polytetrafluoroethylene emulsion accounts for 50-70% by mass. The coating made of the valve oil seal coating material for the methanol engine is added on the surface of the valve oil seal for the methanol engine, so that the friction on the surface of the valve oil seal can be reduced, the methanol resistance of the valve oil seal is improved, and the abrasion and swelling of the valve oil seal are effectively reduced; the problem of among the prior art methanol lubricity poor, lead to engine oil burning and power not enough is solved.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a valve oil seal coating material for a methanol engine, a valve oil seal and an automobile.
Background
In China, the consumption of petroleum for automobiles accounts for more than half of the total consumption of petroleum, and the safety risk of petroleum is continuously increased due to the continuous temperature rise of the automobile market. According to the international development process of automobile industry and the analysis of the current state of China, the proportion of consumption of gasoline and diesel oil for automobiles in the total consumption of petroleum is greatly increased, and meanwhile, air pollution generated by consumption of the automobile petroleum is becoming an increasingly serious social problem, and China is facing to increasingly serious multiple pressures of petroleum safety, environmental protection and the like.
In recent years, with the increasing national emission requirements and the increasing restrictions of environmental regulations, engines using methanol as a combustion medium have become a major trend. The methanol has the characteristics of simple preparation, low price and high-efficiency clean combustion, and can be widely used for replacing fossil fuels. At present, the methanol engine is mainly designed on the basis of an original gasoline engine in an optimized mode, and gasoline liquid fuel used by the original gasoline engine is volatile and has lubricating property, so that a certain lubricating effect is achieved between a valve and a valve oil seal. Different from the traditional gasoline, the methanol has low lubricity, the general rubber material can generate larger abrasion when having a larger friction pair, the service life of parts is greatly reduced, and the methanol is a polar small molecular compound and has a strong swelling effect on non-metallic materials, particularly rubber.
Therefore, it is required to provide a valve oil seal coating material for a methanol engine, which is wear-resistant, swelling-resistant and can improve the reliability of the methanol engine, to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a valve oil seal coating material for a methanol engine. The problems that in the prior art, methanol is poor in lubricity, and an engine burns engine oil and power is insufficient due to the fact that a valve oil seal is easy to wear and swell in the using process are solved.
The technical effects of the invention are realized as follows:
the valve oil seal coating material for the methanol engine comprises polytetrafluoroethylene emulsion and the additive, wherein the polytetrafluoroethylene emulsion accounts for 50-70% by mass, and the additive accounts for 30-50% by mass.
Further, the additive also comprises a surfactant, and the mass percent of the surfactant in the coating material of the valve oil seal for the methanol engine is 1-2%.
Further, the surfactant is a silanol nonionic surfactant.
Further, the additive also comprises polyether modified silicone oil, and the mass percentage of the polyether modified silicone oil in the valve oil seal coating material for the methanol engine is 1-2%.
Further, the additive also comprises an organic silicon flatting agent, and the organic silicon flatting agent accounts for 0.5-2% of the mass of the coating material of the valve oil seal for the methanol engine.
Further, the organic silicon leveling agent is one or more of polydimethylsiloxane, polymethyl alkyl siloxane and organic modified polysiloxane.
Further, the additive also comprises an acrylic acid leveling agent, and the mass percentage of the acrylic acid leveling agent in the coating material of the valve oil seal for the methanol engine is 0.5-2%.
Further, the additive also comprises water, and the mass percentage of the water in the coating material of the valve oil seal for the methanol engine is 22-47%.
In addition, the surface coating of the valve oil seal is made of the valve oil seal coating material for the methanol engine.
In addition, still provide an automobile, the automobile includes foretell valve oil seal.
As described above, the present invention has the following advantageous effects:
1) through increase by the coating that valve oil seal coating material made for the methanol engine of this application on valve oil seal surface, can reduce the friction on valve oil seal surface, improved valve oil seal's methanol-resistant performance to reduce valve oil seal wearing and tearing and swelling effectively, solved among the prior art methanol lubricity poor, lead to engine oil burning and the not enough problem of power.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.
FIG. 1 is a graph of swelling data obtained from tests conducted on coated and uncoated valve oil seals according to the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
the embodiment of the application provides a valve oil seal coating material for methanol engine, valve oil seal coating material for methanol engine include polytetrafluoroethylene emulsion with the additive, wherein, the mass percent of polytetrafluoroethylene emulsion is 60%, the mass percent of additive is 40%.
The preparation method of the valve oil seal coating material for the methanol engine comprises the following steps:
1) adding polytetrafluoroethylene emulsion, a surfactant, an organic silicon flatting agent and an acrylic flatting agent into water, and uniformly mixing to obtain a mixed solution;
the surfactant is a silanol nonionic surfactant, and the mass percent of the silanol nonionic surfactant in the coating material of the valve oil seal for the methanol engine is 1.5%.
The mass percentage of the organic silicon flatting agent in the valve oil seal coating material for the methanol engine is 1%, and the organic silicon flatting agent is one or more of polydimethylsiloxane, polymethyl alkyl siloxane and organic modified polysiloxane.
The mass percentage of the acrylic acid leveling agent in the valve oil seal coating material for the methanol engine is 1%.
The mass percentage of the water in the coating material of the valve oil seal for the methanol engine is 35%.
2) And adding polyether modified silicone oil into the mixed solution, and stirring for more than 24 hours to obtain the valve oil seal coating material for the methanol engine.
The mass percentage of the polyether modified silicone oil in the valve oil seal coating material for the methanol engine is 1-2%.
After the valve oil seal coating material for the methanol engine is prepared, the valve oil seal coating material for the methanol engine is coated on a friction pair part which is easy to generate friction of a valve oil seal, is evaporated to dryness at room temperature, and is then placed in an environment of 200 ℃ for 2h for curing, so that the coating procedure of the valve oil seal can be completed, and the coated valve oil seal is obtained.
In the embodiment of the application, the volume change of the valve oil seal is monitored by adopting a soaking method, the valve oil seal which is not coated and is coated is soaked at 40 ℃ by using a methanol solution, the coating is the valve oil seal coating which is made of the valve oil seal coating material for the methanol engine, the volume change is recorded every 24h until the volume does not rise any more, and as shown in fig. 1, a 168h soaking test is carried out:
the experimental data of fig. 1 show that the swelling ratio of the valve oil seal after coating is reduced by about 90% compared with that of the valve oil seal without coating, and the swelling problem of the valve oil seal generated in the using process can be effectively improved.
Table 1 shows the results of the durability test performed using the engine mount mounted to verify the wear of the valve oil seal.
TABLE 1
The test results for the coated and uncoated valve oil seals in table 1 above show that the coated valve oil seal has less wear than the uncoated valve oil seal, and effectively improves the lubricity of methanol, avoiding the problem of engine oil burning for the engine.
More than synthesizing, through increase by the coating that the valve oil seal coating material for the methanol engine of this application made on the valve oil seal surface, can reduce the friction on valve oil seal surface, improved the methanol-resistant performance of valve oil seal to reduce valve oil seal wearing and tearing and swelling effectively, solved among the prior art methanol lubricity poor, lead to the engine oil burning and the not enough problem of power.
Example 2:
the utility model provides a valve oil seal, valve oil seal is valve oil seal for the methanol engine, valve oil seal's surface coating by embodiment 1 the methanol engine make with valve oil seal coating material, greatly reduced methanol fuel to the swelling and the sclerosis effect of valve oil seal, avoid valve oil seal to lose elasticity and tensioning dynamics, lead to methanol engine machine oil to get into the problem that the combustion chamber caused the engine to burn machine oil.
Example 3:
an automobile which is a new energy automobile using methanol as fuel, the automobile comprising the valve oil seal as described in example 2, wherein the methanol has low lubricity, and a general rubber material is largely worn when having a large friction pair, thereby greatly reducing the service life of parts, and the methanol is a polar small molecular compound and has a strong swelling effect on a non-metallic material, particularly rubber, and the valve oil seal in the prior art is made of a general fluororubber, so that the wear and swelling condition occurs during the actual use, the valve oil seal is aged and highly worn easily, thereby causing the problem that the engine oil is burned or even scrapped, the valve oil seal with the coating is not easy to wear and swell, so that the reliability of the methanol engine is improved, and the service life of an automobile is prolonged.
As described above, the present invention has the following advantageous effects:
1) through increase by the coating that valve oil seal coating material made for the methanol engine of this application on valve oil seal surface, can reduce the friction on valve oil seal surface, improved valve oil seal's methanol-resistant performance to reduce valve oil seal wearing and tearing and swelling effectively, solved among the prior art methanol lubricity poor, lead to engine oil burning and the not enough problem of power.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The valve oil seal coating material for the methanol engine is characterized by being coated on a friction pair part which is easy to generate friction of a valve oil seal, then being evaporated to dryness and being solidified to obtain a coated valve oil seal, and being formed by mixing polytetrafluoroethylene emulsion, a surfactant, polyether modified silicone oil, an organic silicon flatting agent, an acrylic flatting agent and water, wherein the polytetrafluoroethylene emulsion accounts for 50-70% by mass, the surfactant accounts for 1-2% by mass, the polyether modified silicone oil accounts for 1-2% by mass, the organic silicon flatting agent accounts for 0.5-2% by mass, the acrylic flatting agent accounts for 0.5-2% by mass, and the water accounts for 22-47% by mass.
2. A valve oil seal coating material for a methanol engine according to claim 1, wherein the surfactant is a silanol-based nonionic surfactant.
3. The valve oil seal coating material for a methanol engine as defined in claim 1, wherein the silicone leveling agent is one or more of polydimethylsiloxane, polymethylalkylsiloxane and organic modified polysiloxane.
4. A valve oil seal characterized in that a surface coating of the valve oil seal is made of a valve oil seal coating material for a methanol engine according to any one of claims 1 to 3.
5. An automobile characterized by comprising the valve oil seal according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458825.8A CN113278332B (en) | 2021-04-27 | 2021-04-27 | Valve oil seal coating material for methanol engine, valve oil seal and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110458825.8A CN113278332B (en) | 2021-04-27 | 2021-04-27 | Valve oil seal coating material for methanol engine, valve oil seal and automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113278332A CN113278332A (en) | 2021-08-20 |
| CN113278332B true CN113278332B (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110458825.8A Active CN113278332B (en) | 2021-04-27 | 2021-04-27 | Valve oil seal coating material for methanol engine, valve oil seal and automobile |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533325B1 (en) * | 2003-11-17 | 2011-10-19 | 3M Innovative Properties Company | Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant |
| CN101353502B (en) * | 2008-09-11 | 2010-08-04 | 哈尔滨工程大学 | Polytetrafluoroethylene coating material for medical device surface and coating method thereof |
| WO2013146947A1 (en) * | 2012-03-27 | 2013-10-03 | ダイキン工業株式会社 | Aqueous fluoropolymer dispersion |
| CN103724511B (en) * | 2013-12-30 | 2016-06-15 | 山东华夏神舟新材料有限公司 | The preparation method of a kind of fluororubber for oil seal |
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Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: ZHEJIANG FENGRUI ENGINE Co.,Ltd. Patentee after: NINGBO GEELY ROYAL ENGINE COMPONENTS Co.,Ltd. Patentee after: Aurobay Technology Co.,Ltd. Address before: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee before: ZHEJIANG FENGRUI ENGINE Co.,Ltd. Patentee before: NINGBO GEELY ROYAL ENGINE COMPONENTS Co.,Ltd. Patentee before: ZHEJIANG GEELY POWER ASSEMBLY Co.,Ltd. |
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Effective date of registration: 20231115 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: Zhejiang liankong Technology Co.,Ltd. Address before: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee before: ZHEJIANG FENGRUI ENGINE Co.,Ltd. Patentee before: NINGBO GEELY ROYAL ENGINE COMPONENTS Co.,Ltd. Patentee before: Aurobay Technology Co.,Ltd. |
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