CN102250544A - Lubricating coating with low friction and long service life - Google Patents
Lubricating coating with low friction and long service life Download PDFInfo
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- CN102250544A CN102250544A CN2010101767934A CN201010176793A CN102250544A CN 102250544 A CN102250544 A CN 102250544A CN 2010101767934 A CN2010101767934 A CN 2010101767934A CN 201010176793 A CN201010176793 A CN 201010176793A CN 102250544 A CN102250544 A CN 102250544A
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Abstract
The invention discloses a lubricating coating with low friction and a long service life. The coating comprises, by mass: 15-25% of PMR (polymerizable monomeric reactant) type thermosetting polyimide resin, 3-8% of molybdenum disulfide powder, 0.5-4% of graphite powder, 0.1-0.5% of nanometer lanthanum trifluoride, and the balance mixed solvent. In the invention, the lubricating coating with low friction and a long service life is free of lead oxide, cadmium oxide, antimony trioxide and other metallic compounds forbidden by European standards. A paintcoat prepared with the coating of the invention can have high hardness, oil resistance and anti-irradiation property, low friction coefficient and long wearing life, etc.
Description
Technical field
The present invention is the low friction long lifetime slip coating of a kind of motor car engine piston pump and piston ring.
Background technology
The bonded solid lubricant coating technology is the novel lubricating technology that grows up along with the development of new high-tech industries such as Aeronautics and Astronautics, nuclear technique, is the effective means that solves power lubrication problem under the special operation condition condition.The bonded solid lubricant coating technology has obtained widespread use and has obtained significant effect in a lot of fields at present.But most of bonded solid lubricant coatings have been added many heavy metal oxides and compound thereof in order to improve some performance, and these heavy metal compound contaminate environment cause very big harm to human health, are one of materials of European standard forbidding.Therefore, developing a kind of low friction, long-life environment-friendly type bonded solid lubricant coating is the new research direction in this field at present.
The to-and-fro movement in cylinder of motor car engine piston pump and piston ring, be easy to cause pulling of casing surface, piston ring no longer seals, cause the leakage of lubricating oil, finally cause motor car engine to scrap, external a lot of auto makers are handled piston face pointedly to this problem.Chinese patent (91111389.9) discloses a kind of with polyamide-imide resin, solid lubricant is a tetrafluoroethylene, wherein anti-wear additive is selected plumbous oxide, Cadmium oxide, antimonous oxide for use, the dry-film lubricant of dispersion agent cetyl trimethylammonium bromide, it is sprayed on the piston ring surface, has advantages of good abrasion, shock resistance and stopping property.But it has added metallic compounds such as plumbous oxide, Cadmium oxide and antimonous oxide in lubricant is formed.
Summary of the invention
The purpose of this invention is to provide a kind of motor car engine piston pump and piston ring with hanging down friction, long lifetime slip coating.
The present invention can realize by following measure:
Coating of the present invention by binding agent, lubricated mutually and additive forms, wherein binding agent is selected thermoset polyimide resin for use, it is lubricated that to select molybdenumdisulphide and graphite, additive mutually for use be the nanometer lanthanum trifluoride, dispersion medium is the organic appearance agent of mixing.
A kind of low friction long lifetime slip coating, the quality percentage composition that it is characterized in that each component of coating is: PMR type thermoset polyimide resin 15～25%, molybdenum disulphide powder 3～8%, Graphite Powder 99 0.5～4%, nanometer lanthanum trifluoride 0.1～0.5%, the mixed solvent surplus; The mixed solvent volumn concentration consists of N, dinethylformamide 30～40%, toluene 60～70%.
We select N, and these two kinds of solvents of dinethylformamide and toluene are coated technique, surface drying speed and the film formation times that taken into full account lubricant.
The present invention selects for use PMR type thermoset polyimide resin as binding agent, and solid content is 50 ± 2%, and calculating molecular weight is 1500, and molecular structural formula is:
It is the end capped poly amic acid ester prepolymer solution of a kind of active group.
Selected molybdenumdisulphide of the present invention and graphite are lubricant, and these two kinds of lubricants and thermoset polyimide resin have good matching, have good synergistic between these two kinds of lubricants simultaneously, have improved the antiwear and reducing friction performance of coating.The particle diameter of molybdenumdisulphide and graphite is the 100-500 order.
It is additive that the present invention selects the nanometer lanthanum trifluoride for use, its particle diameter is the 30-60 nanometer, good dispersity, has good wear resistance, its adding can with piece surface generation chemical reaction and physical reaction, improve the bonding force of coating and piece surface, be adsorbed on lubricant simultaneously, improve abrasion property.
Preparation method of the present invention is: PMR type thermoset polyimide resin, molybdenum disulphide powder, Graphite Powder 99, nanometer lanthanum trifluoride and mixed solvent are mixed, put into ball grinder and carry out obtaining coating behind the ball milling.
The coating method of slip coating of the present invention is with spray gun the coating for preparing to be sprayed on piece surface under pressurized air (not having oil, anhydrous) or compressed nitrogen.Piece surface needs surface treatments such as oil removing in advance, rust cleaning, phosphatization.Part room temperature in clean air that spray is good is placed a few hours, puts into baking oven again and solidifies.Condition of cure: 150 ℃ ± 5 ℃, constant temperature 60 minutes, 280 ℃ ± 5 ℃, constant temperature can use behind the furnace cooling in 60 minutes.
The present invention is a kind of low friction, long lifetime slip coating, the metallic compound of European standard forbiddings such as oxygen-free lead, Cadmium oxide and antimonous oxide in this coating.Coating with this coating preparation has high hardness, oil-proofness and anti-radiation performance, and low frictional coefficient and long performances such as friction durability.
Product main performance index of the present invention is as shown in table 1.
Embodiment
Embodiment 1:
Take by weighing polyimide resin, 0.95 gram nanometer lanthanum trifluoride, 27.1 gram molybdenumdisulphide, the 9.1 gram graphite of mixed organic solvents 300 grams, 100 grams, carry out ball milling and be slip coating (mixed organic solvents (volume percent): N in 48 hours, dinethylformamide 35%, toluene 65%).
Salient features sees Table 1.
The key technical indexes of table 1 invention product
Embodiment 2:(unit: gram)
Polyimide resin 100 molybdenumdisulphide 22.5
Graphite 11.3 nanometer lanthanum trifluorides 0.95
Mixed organic solvents 300g (wherein: N, dinethylformamide 40%, toluene 60%, (volume percent))
Embodiment 3:(unit: gram)
Polyimide resin 100 molybdenumdisulphide 30.33
Graphite 7.6 nanometer lanthanum trifluorides 0.95
Mixed organic solvents 300g (wherein: N, dinethylformamide 40%, toluene 60%, (volume percent))
Embodiment 4:(unit: gram)
Polyimide resin 100 molybdenumdisulphide 28.92
Meter lanthanum trifluoride 0.95 in the graphite 8.26
Mixed organic solvents 300g (wherein: N, dinethylformamide 36.4%, toluene 63.6%, (volume percent)).
Claims (4)
1. one kind is hanged down friction long lifetime slip coating, the quality percentage composition that it is characterized in that each component of coating is: PMR type thermoset polyimide resin 15～25%, molybdenum disulphide powder 3～8%, Graphite Powder 99 0.5～4%, nanometer lanthanum trifluoride 0.1～0.5%, the mixed solvent surplus; The mixed solvent volumn concentration consists of N, dinethylformamide 30～40%, toluene 60～70%.
2. coating as claimed in claim 1, the particle diameter that it is characterized in that molybdenumdisulphide is the 100-500 order.
3. coating as claimed in claim 1, the particle diameter that it is characterized in that graphite is the 100-500 order.
4. coating as claimed in claim 1, the particle diameter that it is characterized in that the nanometer lanthanum trifluoride is the 30-60 nanometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101767934A CN102250544A (en) | 2010-05-18 | 2010-05-18 | Lubricating coating with low friction and long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101767934A CN102250544A (en) | 2010-05-18 | 2010-05-18 | Lubricating coating with low friction and long service life |
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| Publication Number | Publication Date |
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| CN102250544A true CN102250544A (en) | 2011-11-23 |
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| CN2010101767934A Pending CN102250544A (en) | 2010-05-18 | 2010-05-18 | Lubricating coating with low friction and long service life |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013626A (en) * | 2012-12-06 | 2013-04-03 | 南通市华东润滑设备有限公司 | Cooling lubricant |
| CN103865610A (en) * | 2014-03-12 | 2014-06-18 | 合肥工业大学 | Friction catalyst capable of enhancing lubricating effect of carbon cigarette particle in biomass fuel of engine |
| CN109054625A (en) * | 2018-07-20 | 2018-12-21 | 中国科学院兰州化学物理研究所 | A kind of air-bearing compound polyimide film and preparation method thereof |
| CN111449608A (en) * | 2020-04-02 | 2020-07-28 | 重庆金山医疗技术研究院有限公司 | Endoscope body and method for improving lubricating performance of endoscope body |
| CN115260801A (en) * | 2022-07-29 | 2022-11-01 | 中国航发湖南动力机械研究所 | Graphite-based high-temperature lubricating coating, preparation method thereof and lubricating coating |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385487A (en) * | 2002-05-25 | 2002-12-18 | 中国科学院兰州化学物理研究所 | Polyimide base high temp.-resistant and radiation-resistant lubricating paint |
| CN1450139A (en) * | 2003-04-21 | 2003-10-22 | 上海高分子材料研究开发中心 | High-temp thixotropy resistant polyimide based corrosion-resisting lubricating coating |
-
2010
- 2010-05-18 CN CN2010101767934A patent/CN102250544A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1385487A (en) * | 2002-05-25 | 2002-12-18 | 中国科学院兰州化学物理研究所 | Polyimide base high temp.-resistant and radiation-resistant lubricating paint |
| CN1450139A (en) * | 2003-04-21 | 2003-10-22 | 上海高分子材料研究开发中心 | High-temp thixotropy resistant polyimide based corrosion-resisting lubricating coating |
Non-Patent Citations (1)
| Title |
|---|
| 周惠娣等: "纳米LaF3 微粒对聚酰亚胺粘结固体润滑涂层摩擦学性能及抗腐蚀性能的影响", 《摩擦学学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013626A (en) * | 2012-12-06 | 2013-04-03 | 南通市华东润滑设备有限公司 | Cooling lubricant |
| CN103865610A (en) * | 2014-03-12 | 2014-06-18 | 合肥工业大学 | Friction catalyst capable of enhancing lubricating effect of carbon cigarette particle in biomass fuel of engine |
| CN103865610B (en) * | 2014-03-12 | 2016-01-27 | 合肥工业大学 | A kind of friction catalyzer promoting engine biomass fuel carbon soot particles lubricating effect |
| CN109054625A (en) * | 2018-07-20 | 2018-12-21 | 中国科学院兰州化学物理研究所 | A kind of air-bearing compound polyimide film and preparation method thereof |
| CN109054625B (en) * | 2018-07-20 | 2020-09-08 | 中国科学院兰州化学物理研究所 | Composite polyimide film for air bearing and preparation method thereof |
| CN111449608A (en) * | 2020-04-02 | 2020-07-28 | 重庆金山医疗技术研究院有限公司 | Endoscope body and method for improving lubricating performance of endoscope body |
| CN115260801A (en) * | 2022-07-29 | 2022-11-01 | 中国航发湖南动力机械研究所 | Graphite-based high-temperature lubricating coating, preparation method thereof and lubricating coating |
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Application publication date: 20111123 |