CN1059226C - Thixotropic dry film lubricant - Google Patents
Thixotropic dry film lubricant Download PDFInfo
- Publication number
- CN1059226C CN1059226C CN96113482A CN96113482A CN1059226C CN 1059226 C CN1059226 C CN 1059226C CN 96113482 A CN96113482 A CN 96113482A CN 96113482 A CN96113482 A CN 96113482A CN 1059226 C CN1059226 C CN 1059226C
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- dry film
- thixotropic
- lubricant
- film lubricant
- high temperature
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Abstract
The present invention belongs to a high temperature resistance thixotropic dry film lubricant which is characterized in that silicon resin and epoxy resin are selected as a binding agent, butadiene is used as an elasticizer, and phenolic resin is used as a curing agent; the lubricant is composed of graphite and rare earth fluoride, a thixotropic agent is composed of vapor phase silicon dioxide or organic bentonite, a high temperature resistance filler is composed of boron nitride or diantimony trioxide, and a component solvent, etc. are added to form the high temperature resistance thixotropic dry film lubricant. The lubricant is sprayed or dipped on a workpiece surface to form a solid thin film, and the present invention can obtain the performance of resistance to high temperature of 600DEG C, sticking resistance and engagement resistance. The present invention is mainly used for being coated on the surfaces of components which have large curvature and complex shapes and are easily segregated or accumulated or sagged, and is particularly suitable for being used in environment with the requirement of high temperature resistance for a long time in a relatively motionless(state.
Description
The present invention is a kind of thixotropic dry film lubricant with antiseized, anti-interlock, high temperature resistant function, belongs to solid lubricant.It is mainly used in the fastener surface of novel aircraft engine inside, also is suitable for other fastening piece, and screw thread etc. need the antiseized workpiece surface of high temperature.
Aircraft engine is the heart of aircraft, in view of most positions in operational process are in high temperature and the corrosive environment, because fastening piece usually takes place because of corrosion in the continuous effect of high temperature and combustion exhaust, and sintering and killing.Fastener surface curvature is very big, and is complex-shaped, and common dry film is behind coating construction, because of the surface energy effect, be easy to generate phenomenons such as segregation or accumulation sagging, for addressing the above problem, under the general not wield operating mode of dry-film lubricant, thixotropic dry film lubricant has well solved the problems referred to above.
The objective of the invention is to overcome general dry-film lubricant deficiency of the prior art and provide a kind of high temperature resistant, antiseized, anti-ly kill, anti-segregation or pile up all good thixotropic dry film lubricant of sagging performance, and the preparation method of dry film is provided simultaneously.
Purpose of the present invention can realize by following measure:
Thixotropic dry film lubricant is by high temperature resistant binder, solid lubricant, solidifying agent, toughner, anticorrosive additive, compositions such as thixotropic agent.Binding agent is that silicone resin and Resins, epoxy, solid lubricant are graphite, and toughner is paracril, and rare earth fluoride and antimonous oxide are as anticorrosive additive, and boron nitride is as the high temperature filler, and thixotropic agent is aerosil or organic bentonite.The weight percent of each component is in the dry-film lubricant: silicone resin 20-50%, Resins, epoxy 10-25%, paracril 1-20%, resole 1-10%, graphite 15-35%, boron nitride 2-15%, rare earth fluoride 1-3%, antimonous oxide 3-10%.Aerosil 0-7%, bentonite 0-5%.
Select for use silicone resin, Resins, epoxy and paracril as binding agent, can make the cohesive strength of dry film, snappiness and wear resistance at high temperature with under the normal temperature are fully guaranteed.
Solid lubricant is a graphite, also added simultaneously with graphite and had good synergistic rare earth fluoride and antimonous oxide, improved wear resistance, the latter's adding has also improved the Corrosion Protection of coating, the adding of thixotropic agent makes that workpiece surface curvature is big, the surface of complex-shaped easy segregation or accumulation sagging has obtained solution, and the adding of high temperature resistant filler boron nitride makes dry film at high temperature play the effect of lubricating and preventing to kill.So dry-film lubricant of the present invention has the good heat-resistance ability, the low wear resistance of frictional coefficient is good, and has good thixotropic property.
The present invention is applicable to aircraft outer tunnel back segment fastener threads, and curvature is very big, and is complex-shaped, needs resistant to elevated temperatures parts surface in addition.
Binding agent in the above-mentioned prescription of the present invention, solid lubricant, thixotropic agent, anticorrosive agent etc. all are powdery solid or thick liquid before not making dry film.Therefore when the preparation dry film, need be made into the dry film spray and spray, exactly the solid particulate in the prescription is scattered in the dispersion medium.By prescription of the present invention, the powdered material is added in the dispersion medium, after abundant grinding, make thixotropic soup compound spray.Dispersion medium is selected organic solvent for use, i.e. toluene, pine tar, acetone, propyl carbinol mixed solution, and add-on is the equivalent weight of prescription material.Consisting of of dispersion medium: toluene 20-45%, pine tar 5-20%, propyl carbinol 10-30%, acetone surplus (weight percentage).Why selecting this four kinds of solvents for use, is to have taken into full account factors such as film formation time, temperature, outward appearance.
The rare earth fluoride that the present invention selects for use can be a lanthanum fluoride, cerium fluoride, but preferably select cerium fluoride for use.
The used solidifying agent of the present invention is a Tetra hydro Phthalic anhydride, dicyanamide, and resoles etc. are preferably selected resole for use.
The silicone resin structural formula that the present invention selects for use is represented as (I)
Me:-CH
3Et:-C
2H
5M: non-metallic element
(I)
Resins, epoxy, softening temperature are 12-20 ℃, oxirane value 0.41-0.47; Acrylonitrile content is between 37.2-38.5% in the paracril, and molecular weight is 3000-10000.First rank phenol-formaldehyde resin, hydroxyl, the percentage composition of methylol are 12-20%.
The used graphite purity of the present invention is greater than 98%, and granularity is below 5 microns, antimonous oxide, and rare earth fluoride is all by 300 orders (2 μ m) sieve aperture.
Dry-film lubricant of the present invention is listed in the table below by the product the key technical indexes that most preferred embodiment makes:
| Test item | Unit | Technological standard | The result |
| (600 ℃/100h) friction durability of viscosity (being coated with～4 glasss 20 ℃) thickness coatings drying property (190 ± 5 ℃) pliability impact strength dry film adhesive force dry film hot propertys | S μm h mm kg·cm / / min/μm | Actual measurement is not more than that 20 2 GB1731-79 GB1732-79 tape method do not take place that sintering is killed and smooth demolition Timken testing machine 2.5 meter per seconds, 32 kilograms | 12 15 22 50 qualified 1～2 |
Dry-film lubricant of the present invention is fit to be sprayed on the machining surface and the lapped face of materials such as various carbon steels, stainless steel, steel alloy, cast iron.
The present invention can implement by following measure:
Take by weighing graphite by prescription of the present invention, rare earth fluoride, boron nitride, antimonous oxide, be ground to required granularity, join thorough mixing in the part dispersion medium then, take by weighing silicone resin, Resins, epoxy, paracril adds the part dispersion medium and dissolves, take by weighing resole again, and the dispersion medium that adds remainder dissolves, the silicone resin that has dissolved, Resins, epoxy, paracril and solid material be mixed grinding about 15 minutes mutually, add lysed resole at last, stir and be the dry film lubrication spray, the spray that makes, according to a conventional method it is sprayed on the workpiece, after treating organic solvent volatilization (dispersion medium), solidify half an hour down at 105 ℃ ± 3 ℃, solidify 1 hour (nail rank resol is solidifying agent) down at 195 ℃ ± 5 ℃ then, promptly on workpiece, form dry film.
The embodiment of the invention is as follows: example 1: organic siliconresin 30% graphite 25% epoxy resin 15% boron nitride 4% acrylonitrile-butadiene rubber 7% cerium fluoride 3% resol 5% antimony oxide 11% example 2: organic siliconresin 28% graphite 23% epoxy resin 20% boron nitride 4% acrylonitrile-butadiene rubber 10% lanthanum fluoride 2% resol 7% antimony oxide 6% example 3: organic siliconresin 35% graphite 25% epoxy resin 18% boron nitride 7% acrylonitrile-butadiene rubber 12% cerium fluoride 3% resol 6% antimony oxide 4% example 4: organic siliconresin 25% graphite 26% epoxy resin 15% boron nitride 5% acrylonitrile-butadiene rubber 10% cerium fluoride 1% resol 5% antimony oxide 8%
Aerosil 5% example 5: silicone resin 40% graphite 24% Resins, epoxy 10% boron nitride 15% paracril 5% cerium fluoride 2% resole 6% antimonous oxide 5%
Organic bentonite 3% example 6: silicone resin 30% graphite 21% Resins, epoxy 18% boron nitride 6% paracril 5% cerium fluoride 3% resole 6% antimonous oxide 7%
Mixed solvent was 1: 1 with the prescription material during aerosil was implemented more than 4% to fill a prescription.
Claims (7)
1, a kind of thixotropic dry film lubricant, it is characterized in that by
Silicone resin 20～50%
Resins, epoxy 10～25%
Paracril 1～20%
Resole 1～10%
Graphite 15～35%
Boron nitride 2～15%
Rare earth fluoride 1～3%
Antimonous oxide 3～10%
Aerosil 0～7%
Organic bentonite 0～5%
Weight percentage is formed.
2, thixotropic dry film lubricant as claimed in claim 1 is characterized in that rare earth fluoride is lanthanum fluoride, cerium fluoride.
3, thixotropic dry film lubricant as claimed in claim 1 is characterized in that 12～20 ℃ of the softening temperatures of Resins, epoxy, and oxirane value is 0.41～0.47.
4, thixotropic dry film lubricant as claimed in claim 1 is characterized in that acrylonitrile content is between 37.2～38.5% in the paracril, and molecular weight is 3000～10000.
5, thixotropic dry film lubricant as claimed in claim 1 is characterized in that silicone resin, and structural formula is represented as (I):
Me:-CH
3Et:-C
2H
5M: non-metallic element
(I)
6, thixotropic dry film lubricant as claimed in claim 1 is characterized in that graphite purity greater than 98%, and granularity is below 5 microns, antimonous oxide, the equal 2 μ m of rare earth fluoride.
7, the preparation method of dry-film lubricant according to claim 1, adding dispersion medium in the dry film powder material makes spray and sprays, it is characterized in that dispersion medium and dry film powdered material's proportion are 1: 1, dispersion medium is: the mixed solution of toluene, pine tar, acetone, propyl carbinol, and its composition weight percentage is:
Toluene 20～45%, pine tar 5～20%, propyl carbinol 10～30%, acetone surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96113482A CN1059226C (en) | 1996-12-29 | 1996-12-29 | Thixotropic dry film lubricant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96113482A CN1059226C (en) | 1996-12-29 | 1996-12-29 | Thixotropic dry film lubricant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1186847A CN1186847A (en) | 1998-07-08 |
| CN1059226C true CN1059226C (en) | 2000-12-06 |
Family
ID=5121871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96113482A Expired - Fee Related CN1059226C (en) | 1996-12-29 | 1996-12-29 | Thixotropic dry film lubricant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059226C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4692744B2 (en) * | 2004-08-02 | 2011-06-01 | 信越化学工業株式会社 | Epoxy resin composition for semiconductor encapsulation and semiconductor device |
| CN102051258B (en) * | 2009-11-02 | 2013-04-10 | 中国科学院兰州化学物理研究所 | Aqueous epoxy adhering solid lubricant |
| CN102010773A (en) * | 2010-08-19 | 2011-04-13 | 柴德国 | Compound high-performance and high-temperature seizure resistance agent |
| CN106318544A (en) * | 2016-08-15 | 2017-01-11 | 谢光玉 | High-temperature-resistant dry film lubricating agent |
| CN109580380A (en) * | 2018-12-25 | 2019-04-05 | 江苏隆达超合金航材有限公司 | The method glutinous for fixture resistance in high temperature endurance performance experiment |
| CN112521836B (en) * | 2020-12-25 | 2022-02-11 | 中国科学院兰州化学物理研究所 | Quick-drying type lubricating/wear-resistant anti-corrosion function integrated aluminum coating for fasteners |
| CN113717776B (en) * | 2021-08-04 | 2023-07-14 | 上海海联润滑材料科技有限公司 | Film-fixing tungsten disulfide lubrication spray and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262074A (en) * | 1979-11-19 | 1981-04-14 | A. B. Dick Company | Photographic copy method and materials |
| CN1038832A (en) * | 1988-06-02 | 1990-01-17 | 纳幕尔杜邦公司 | Low pour crude oil compositions |
| US5356545A (en) * | 1991-01-15 | 1994-10-18 | General Electric Company | Curable dry film lubricant for titanium alloys |
| CN1120579A (en) * | 1994-10-08 | 1996-04-17 | 中国科学院兰州化学物理研究所 | Single component long-acting dry film lubricant |
-
1996
- 1996-12-29 CN CN96113482A patent/CN1059226C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4262074A (en) * | 1979-11-19 | 1981-04-14 | A. B. Dick Company | Photographic copy method and materials |
| CN1038832A (en) * | 1988-06-02 | 1990-01-17 | 纳幕尔杜邦公司 | Low pour crude oil compositions |
| US5356545A (en) * | 1991-01-15 | 1994-10-18 | General Electric Company | Curable dry film lubricant for titanium alloys |
| CN1120579A (en) * | 1994-10-08 | 1996-04-17 | 中国科学院兰州化学物理研究所 | Single component long-acting dry film lubricant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1186847A (en) | 1998-07-08 |
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