CN108034480B - Dustproof grease composition for optical instrument and preparation method thereof - Google Patents
Dustproof grease composition for optical instrument and preparation method thereof Download PDFInfo
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- CN108034480B CN108034480B CN201711399166.5A CN201711399166A CN108034480B CN 108034480 B CN108034480 B CN 108034480B CN 201711399166 A CN201711399166 A CN 201711399166A CN 108034480 B CN108034480 B CN 108034480B
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- dustproof
- silicone oil
- dimethyl silicone
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- 230000003287 optical effect Effects 0.000 title claims abstract description 34
- 239000004519 grease Substances 0.000 title claims abstract description 32
- 239000000203 mixture Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 229920002545 silicone oil Polymers 0.000 claims abstract description 19
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 18
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 17
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 17
- 229910002011 hydrophilic fumed silica Inorganic materials 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 12
- YSIQDTZQRDDQNF-UHFFFAOYSA-L barium(2+);2,3-di(nonyl)naphthalene-1-sulfonate Chemical compound [Ba+2].C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1.C1=CC=C2C(S([O-])(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 YSIQDTZQRDDQNF-UHFFFAOYSA-L 0.000 claims description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 230000007935 neutral effect Effects 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 230000001007 puffing effect Effects 0.000 claims description 8
- WJUMWVJBOZKPPU-UHFFFAOYSA-N 2,3-bis(6-methylheptyl)-N-phenylaniline Chemical compound C(CCCCC(C)C)C=1C(=C(C=CC1)NC1=CC=CC=C1)CCCCCC(C)C WJUMWVJBOZKPPU-UHFFFAOYSA-N 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 7
- OLLFKUHHDPMQFR-UHFFFAOYSA-N dihydroxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](O)(O)C1=CC=CC=C1 OLLFKUHHDPMQFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 239000011733 molybdenum Substances 0.000 claims description 7
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims description 6
- 239000012990 dithiocarbamate Substances 0.000 claims description 6
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 239000000314 lubricant Substances 0.000 abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 6
- 239000003963 antioxidant agent Substances 0.000 abstract description 5
- 230000003078 antioxidant effect Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 5
- 239000006078 metal deactivator Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 5
- 239000013556 antirust agent Substances 0.000 abstract description 4
- 239000002199 base oil Substances 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 4
- 239000002562 thickening agent Substances 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 239000000084 colloidal system Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 230000008719 thickening Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- 239000012467 final product Substances 0.000 description 6
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 6
- 230000008961 swelling Effects 0.000 description 6
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 4
- 239000012964 benzotriazole Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910021485 fumed silica Inorganic materials 0.000 description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NMEPHPOFYLLFTK-UHFFFAOYSA-N trimethoxy(octyl)silane Chemical compound CCCCCCCC[Si](OC)(OC)OC NMEPHPOFYLLFTK-UHFFFAOYSA-N 0.000 description 2
- MZWDAEVXPZRJTQ-WUXMJOGZSA-N 4-[(e)-(4-fluorophenyl)methylideneamino]-3-methyl-1h-1,2,4-triazole-5-thione Chemical compound CC1=NNC(=S)N1\N=C\C1=CC=C(F)C=C1 MZWDAEVXPZRJTQ-WUXMJOGZSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
- C10M2215/065—Phenyl-Naphthyl amines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/04—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions having a silicon-to-carbon bond, e.g. organo-silanes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
- C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/08—Resistance to extreme temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/30—Anti-misting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/06—Instruments or other precision apparatus, e.g. damping fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
Abstract
The invention provides a dustproof grease composition for an optical instrument and a preparation method thereof, wherein the dustproof grease composition comprises the following components in parts by weight: 67-95.2 parts of base oil, 3-15 parts of thickening agent, 0.5-5 parts of structure improving agent, 1-8 parts of solid lubricant, 0.1-2 parts of metal deactivator, 0.1-2 parts of antioxidant and 0.1-1 part of antirust agent. The invention also provides a preparation method of the dustproof grease composition for the optical instrument. The invention adopts gas phase method silicon dioxide thickening dimethyl silicone oil, and adds structure improving agent, solid lubricant, metal deactivator, antioxidant and antirust agent to prepare the dustproof grease composition for optical instruments, which has excellent high and low temperature, colloid stability, thermal oxidation stability, wear-resistant extreme pressure property, sealing property, adhesion and protective property. It is suitable for long-term dust prevention and lubrication of rotating parts such as screw threads of various military and civil optical instruments (sighting telescope, periscope, etc.).
Description
Technical Field
The invention relates to the technical field of dustproof grease for optical instruments, in particular to a dustproof grease composition for an optical instrument and a preparation method thereof.
Background
The optical instrument is a special precision instrument for observation, measurement and photography, and mainly consists of an optical glass lens and a rotating and sliding adjusting mechanism.
The lubricating grease used by the optical instrument is generally added during assembly, has less requirement amount and long service cycle, is used for ensuring the normal lubrication of the optical instrument in the debugging and using processes, and is not supplemented or replaced until an instrument system is overhauled. Because of the wide application range of optical instruments, the grease not only needs to adapt to various special environmental conditions, but also needs to have high reliability and extremely long service life. Common greases generally fail to meet these demanding requirements and specialized synthetic greases must be employed.
The synthetic oil lubricating grease is prepared by using synthetic oil (including silicone oil, diester, poly-alpha-olefin and the like) as base oil and special thickening agents (including additives and fillers).
The synthetic oil lubricating grease for the optical instrument meets the following performance requirements:
(1) extremely low evaporation loss, if the evaporation degree is too high, oil vapor is condensed on the mirror surface to form oil mist, so that the observation effect is influenced;
(2) excellent colloidal stability, if the amount of oil is large, the separated oil flows to the mirror surface, contaminates the mirror surface and hinders the cleaning of the instrument in long-term use and storage.
(3) The grease itself does not produce mildew, and if the grease grows mildew, hyphae can extend to the mirror surface, which hinders the observation.
(4) Good adhesion and anti-flowing property, firmly attached to the friction surface without loss, playing a good role in sealing and isolating and effectively blocking the entering of impurities such as external dust and the like.
(5) The lubricating grease has excellent lubricating performance, and is required to have good anti-wear extreme pressure performance at certain rotating parts such as threads, and the threads are effectively prevented from being scratched in the rotating process.
(6) Good protective performance, effectively prevents metal corrosion, and prolongs the normal service life of the optical instrument.
(7) The wide application temperature range is between-50 and +150 ℃, and the product can be used for a long time.
Disclosure of Invention
The present invention provides a dust-proof grease composition for optical instruments and a preparation method thereof, which has excellent sealing dust-proof performance and lubricity and completely satisfies the lubrication of rotating parts such as threads of various optical instruments (such as a sighting device, a periscope, etc.).
The dustproof grease composition for the optical instrument comprises the following components in parts by weight:
further, the base oil is one or a mixture of two dimethyl silicone oils with the kinematic viscosity of 500-30000 cst at 25 ℃ in different viscosity grades.
Further, the thickening agent has a specific surface area of 100-400 m2One or two of the gas phase white carbon black per gram. Particularly preferably has a specific surface area of 200 to 400m2Hydrophobic white of/gMixing carbon black and hydrophilic white carbon black according to the ratio of 1: 1 or 2: 1.
Further, the structure improving agent adopts one of hexamethyldisilazane, octyltrimethoxysilane and diphenyldihydroxysilane, and as a further improvement of the invention, the structure improving agent adopts ethanol for dissolving pretreatment, so that the bad components in the structure improving agent can be removed.
Further, the solid lubricant is one or a mixture of more of Polytetrafluoroethylene (PTFE) ultrafine powder, Melamine Cyanurate (MCA) and molybdenum dialkyl dithiocarbamate (MoDTC). Particularly preferably, the particle diameter d50 is 5 μm and the specific surface area is 3m2The Polytetrafluoroethylene (PTFE) micropowder is mixed with molybdenum dialkyldithiocarbamate (MoDTC) in a ratio of 1: 1 to 3: 1.
Further, the metal deactivator is one of benzotriazole, alkylbenzene triazole and derivatives thereof, and particularly preferred is an alkylbenzene triazole derivative.
Further, the antioxidant is one of diisooctyl diphenylamine, N-phenyl alpha-naphthylamine and alkylated diphenylamine, and diisooctyl diphenylamine is particularly preferred.
Further, the rust inhibitor is neutral or alkaline barium dinonylnaphthalenesulfonate, preferably neutral barium dinonylnaphthalenesulfonate, which has a lower negative effect on the colloidal structure than alkaline barium dinonylnaphthalenesulfonate.
A method for preparing the above dustproof grease composition for optical instruments, comprising the steps of:
1) firstly, adding base oil into a reaction kettle, heating and stirring to raise the temperature to 90 +/-3 ℃, adding a structure improving agent, continuously raising the temperature to 150-155 ℃, slowly adding a thickening agent, and continuously raising the temperature to 160 +/-3 ℃ after the addition is finished;
2) puffing at 160 +/-3 ℃ for 1.5 hours, stirring for 3 minutes every 10 minutes in the puffing process, then sequentially adding the solid lubricant, the metal deactivator, the antioxidant and the antirust agent, vacuumizing to-0.05 MPa after the solid lubricant, the metal deactivator, the antioxidant and the antirust agent are added, dehydrating for 1 hour under constant temperature and vacuum, and discharging and putting into a barrel;
3) naturally cooling to room temperature, and grinding for 3 times by using a three-roll grinder to obtain the dustproof grease composition for the optical instrument.
The dustproof grease for the rotating parts such as the threads of military and civil optical instruments has excellent dustproof effect (excellent adhesion and effective prevention of impurities such as dust from entering), no mildew, extremely low evaporation loss, no fogging, excellent wear-resistant extreme pressure performance, wide application temperature range (minus 50 ℃ to plus 150 ℃), extremely long service life and capability of meeting long-term and even lifetime lubrication protection of the optical instruments.
Compared with the prior instrument grease, the invention has the following advantages:
1. the adhesive and the sealing performance are excellent, the invasion of external impurities such as dust and the like is effectively blocked, and the dustproof and antifogging effects are excellent;
2. the lubricating agent has excellent lubricating performance, is suitable for lubricating rotating parts such as threads and the like, and effectively prevents the threads from being scratched;
3. the mildew does not grow on the surface of the product, and the product does not contain a biological toxic bactericide;
4. excellent thermal oxidation stability, and can satisfy long-term and even lifetime lubrication of optical instruments.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments.
Example one
A dustproof grease composition for optical instruments is prepared by the following steps:
adding 86.3 parts of dimethyl silicone oil with 25 ℃ kinematic viscosity of 12500cst into a reaction kettle, heating to 90 ℃, adding 2 parts of diphenyl dihydroxy silane, heating to 150-155 ℃, and then adding 6 parts of dimethyl silicone oil with specific surface area of 250m while stirring2And the temperature is raised to 160 ℃ after the hydrophilic fumed silica is added, the swelling is carried out for 1.5 hours, and the hydrophilic fumed silica is stirred for 3 minutes every 10 minutes in the swelling process. Then 5 parts of polytetrafluoroethylene micro powder, 0.1 part of benzotriazole, 0.5 part of N-phenyl alpha naphthylamine and 0.1 part of alkaline barium dinonyl naphthalene sulfonate are added, the vacuum degree is pumped to-0.05 MPa after the addition is finished, and the constant temperature and constant vacuum dehydration is carried out for 1 hour. Discharging, naturally cooling to room temperature, grinding with three rollersGrinding on the machine for 3 times to obtain the final product.
Example two
A dustproof grease composition for optical instruments is prepared by the following steps:
adding 16 parts of 12500cst dimethyl silicone oil with 25 ℃ kinematic viscosity and 70.3 parts of 1000cst dimethyl silicone oil with 25 ℃ kinematic viscosity into a reaction kettle, heating to 90 ℃, adding 1 part of diphenyl dihydroxy silane, heating to 150-155 ℃, and then adding 3 parts of 250m specific surface area while stirring2Adding 3 parts of hydrophilic fumed silica with specific surface area of 260m after the hydrophilic fumed silica is added2And heating the hydrophobic fumed silica to 160 ℃, puffing for 1.5 hours, and stirring for 3 minutes every 10 minutes in the puffing process. Then adding 4 parts of Polytetrafluoroethylene (PTFE) micro powder, 2 parts of molybdenum dialkyl dithiocarbamate (MoDTC), 0.1 part of methylbenzotriazole, 0.5 part of diisooctyl diphenylamine and 0.1 part of neutral barium dinonyl naphthalene sulfonate, vacuumizing to-0.05 MPa after the addition is finished, and carrying out constant-temperature and constant-vacuum dehydration for 1 hour. Discharging, naturally cooling to room temperature, and grinding for 3 times on a three-roll grinder to obtain the final product.
EXAMPLE III
A dustproof grease composition for optical instruments is prepared by the following steps:
adding 20 parts of 12500cst dimethyl silicone oil with 25 ℃ kinematic viscosity and 66.8 parts of 1000cst dimethyl silicone oil with 25 ℃ kinematic viscosity into a reaction kettle, heating to 90 ℃, adding 0.5 part of diphenyl dihydroxy silane, heating to 150-155 ℃, and then adding 2 parts of 380m specific surface area while stirring2Adding 4 parts of hydrophilic fumed silica with specific surface area of 260m after the hydrophilic fumed silica is added2And heating the hydrophobic fumed silica to 160 ℃, puffing for 1.5 hours, and stirring for 3 minutes every 10 minutes in the puffing process. Then adding 3 parts of Polytetrafluoroethylene (PTFE) micro powder, 3 parts of molybdenum dialkyl dithiocarbamate (MoDTC), 0.1 part of benzotriazole, 0.5 part of diisooctyl diphenylamine and 0.1 part of neutral barium dinonyl naphthalene sulfonate, vacuumizing to-0.05 MPa after the addition is finished, and carrying out constant-temperature and constant-vacuum dehydration for 1 hour. Discharging, naturally cooling to room temperature, grinding for 3 times with a three-roller grinder to obtain the final product。
Example four
A dustproof grease composition for optical instruments is prepared by the following steps:
adding 10 parts of 12500cst dimethyl silicone oil with 25 ℃ kinematic viscosity and 72.8 parts of 1000cst dimethyl silicone oil with 25 ℃ kinematic viscosity into a reaction kettle, heating to 90 ℃, adding 1.5 parts of octyl trimethoxy silane, heating to 150-155 ℃, and then adding 5 parts of 200m specific surface area while stirring2Adding 2 parts of hydrophilic fumed silica with specific surface area of 260m after the hydrophilic fumed silica is added2The hydrophobic fumed silica/g is heated to 160 ℃ and expanded for 1.5 hours, and the hydrophobic fumed silica is stirred for 3 minutes every 10 minutes in the expansion process. Then 3 parts of Polytetrafluoroethylene (PTFE) micro powder, 5 parts of Melamine Cyanurate (MCA), 0.1 part of methylbenzotriazole, 0.5 part of alkylated diphenylamine and 0.1 part of neutral barium dinonylnaphthalene sulfonate are added, after the addition, the vacuum degree is pumped to-0.05 MPa, and constant-temperature and constant-vacuum dehydration is carried out for 1 hour. Discharging, naturally cooling to room temperature, and grinding for 3 times on a three-roll grinder to obtain the final product.
EXAMPLE five
A dustproof grease composition for optical instruments is prepared by the following steps:
adding 83.8 parts of dimethyl silicone oil with 25 ℃ kinematic viscosity of 1000cst into a reaction kettle, heating to 90 ℃, adding 2 parts of hexamethyldisilazane, heating to 150-155 ℃, and then adding 6.5 parts of dimethyl silicone oil with specific surface area of 200m while stirring2And the temperature is raised to 160 ℃ after the hydrophilic fumed silica is added, the swelling is carried out for 1.5 hours, and the hydrophilic fumed silica is stirred for 3 minutes every 10 minutes in the swelling process. Then adding 3 parts of Polytetrafluoroethylene (PTFE) micro powder, 4 parts of Melamine Cyanurate (MCA), 0.1 part of benzotriazole, 0.5 part of alkylated diphenylamine and 0.1 part of neutral barium dinonylnaphthalene sulfonate, vacuumizing to-0.05 MPa after the addition, and carrying out constant-temperature and constant-vacuum dehydration for 1 hour. Discharging, naturally cooling to room temperature, and grinding for 3 times on a three-roll grinder to obtain the final product.
EXAMPLE six
A dustproof grease composition for optical instruments is prepared by the following steps:
adding 40 parts of 12500cst dimethyl silicone oil with 25 ℃ kinematic viscosity and 43.8 parts of 1000cst dimethyl silicone oil with 25 ℃ kinematic viscosity into a reaction kettle, heating to 90 ℃, adding 2 parts of diphenyl dihydroxy silane, heating to 150-155 ℃, and then adding 6.5 parts of 200m specific surface area while stirring2And the temperature is raised to 160 ℃ after the hydrophilic fumed silica is added, the swelling is carried out for 1.5 hours, and the hydrophilic fumed silica is stirred for 3 minutes every 10 minutes in the swelling process. Then adding 5 parts of Polytetrafluoroethylene (PTFE) micro powder, 2 parts of molybdenum dialkyl dithiocarbamate (MoDTC), 0.1 part of methylbenzotriazole, 0.5 part of diisooctyl diphenylamine and 0.1 part of neutral barium dinonyl naphthalene sulfonate, vacuumizing to-0.05 MPa after the addition is finished, and carrying out constant-temperature and constant-vacuum dehydration for 1 hour. Discharging, naturally cooling to room temperature, and grinding for 3 times on a three-roll grinder to obtain the final product.
The performance test data of the optical instrument dust-proof grease obtained in the first to sixth examples are as follows:
as can be seen from the above table, the optical instrument dustproof grease of the present invention not only has excellent sealing dustproof performance, wear-resistant extreme pressure performance, low evaporation loss and oil separation rate, but also has a wide use temperature range (-50 to +150 ℃) and extremely long service life (excellent thermal oxidation stability), and meets the requirements of long-term and lifetime dustproof lubrication of rotating parts such as threads of various optical instruments.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (2)
1. The dustproof grease composition for the optical instrument is characterized by comprising the following components in parts by weight: 40 parts of dimethyl silicone oil with 25 ℃ kinematic viscosity of 12500cSt, 43.8 parts of dimethyl silicone oil with 25 ℃ kinematic viscosity of 1000cSt, 2 parts of diphenyl dihydroxy silane and 6.5 parts ofSurface area of 200m2The coating comprises, by weight, 5 parts of hydrophilic fumed silica, 5 parts of polytetrafluoroethylene micro powder, 2 parts of molybdenum dialkyl dithiocarbamate, 0.1 part of methylbenzotriazole, 0.5 part of diisooctyl diphenylamine and 0.1 part of neutral barium dinonyl naphthalene sulfonate.
2. A method for preparing the dustproof grease composition for optical instruments as claimed in claim 1, comprising the steps of:
adding 40 parts of 12500cSt dimethyl silicone oil with 25 ℃ kinematic viscosity and 43.8 parts of 1000cSt dimethyl silicone oil with 25 ℃ kinematic viscosity into a reaction kettle, heating to 90 ℃, adding 2 parts of diphenyl dihydroxy silane, heating to 150-155 ℃, and then adding 6.5 parts of 200m specific surface area while stirring2Heating to 160 ℃ after adding the hydrophilic fumed silica per gram, puffing for 1.5 hours, stirring for 3 minutes every 10 minutes in the puffing process, then adding 5 parts of polytetrafluoroethylene micro powder, 2 parts of molybdenum dialkyl dithiocarbamate, 0.1 part of methylbenzotriazole, 0.5 part of diisooctyl diphenylamine and 0.1 part of neutral barium dinonyl naphthalene sulfonate, vacuumizing to-0.05 MPa after adding, dehydrating for 1 hour at constant temperature and vacuum, discharging, putting into a barrel, naturally cooling to room temperature, and grinding for 3 times on a three-roll grinder to obtain the dustproof grease composition for the optical instrument.
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| CN109054964A (en) * | 2018-10-25 | 2018-12-21 | 钱建平 | A kind of lubricating oil for Precision Machinery Elements |
| CN109679733A (en) * | 2018-12-19 | 2019-04-26 | 无锡飞天润滑油科技股份有限公司 | A kind of optical instrument lubricating grease and preparation method thereof |
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| CN111423921B (en) * | 2020-05-09 | 2022-07-12 | 中山市特好德润滑科技有限公司 | Lubricating grease for automobile safety airbag and preparation method thereof |
| CN112552985B (en) * | 2020-12-14 | 2022-07-19 | 武汉博达特种润滑技术有限公司 | Low-temperature rod-shaped valve rod sealing grease composition and preparation method thereof |
| CN115074169B (en) * | 2021-03-16 | 2023-11-17 | 克鲁勃润滑产品（上海）有限公司 | Lubricating grease, speed reducer comprising lubricating grease and robot |
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