Super-strong acid and alkali chemical corrosion resistant lubricating grease for photoelectric chip industry and preparation method of super-strong acid and alkali chemical corrosion resistant lubricating grease

Abstract

The invention relates to super-strong acid and alkali chemical corrosion resistant lubricating grease for the photoelectric chip industry. The super-strong acid and alkali chemical corrosion resistant lubricating grease is prepared from the following raw materials in parts by weight: 50-80 parts of refined perfluoropolyether base oil, 20-40 parts of a polytetrafluoroethylene micro powder thickening agent, 0.5-3 parts of a coupling agent, 0.1-3 parts of an anti-rust preservative and 1-5 parts of a dispersing agent. According to the super-strong acid and alkali chemical corrosion resistant lubricating grease composition for the photoelectric chip industry and the preparation method thereof, the blank of domestic lubricating grease for the photoelectric chip industry is filled, various functional auxiliaries are added into the lubricating grease, the mechanical stability of the product is improved, the structural stability of the product is enhanced, and the service life of the product is prolonged. And the production process is simple and the production period is short.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating grease, and in particular to a lubricating grease with super acid and alkali chemical corrosion resistance for the optoelectronic chip industry and a preparation method thereof. Background Art

[0002] With the development and improvement of science and technology and the continuous progress and upgrading of mechanical equipment, modern mechanical technology has begun to develop in the direction of high temperature, high speed, small size, environmental protection, long life and intelligence, especially in the optoelectronic semiconductor industry, chip manufacturing industry, aerospace field, the application environment has very demanding working conditions such as ultra-high vacuum, high and low temperature, cleanliness, radiation resistance, long life, etc.

[0003] At present, there is a blank period for lubricating grease with super acid and alkali chemical corrosion resistance in the chip industry. To fill this blank, the present invention provides a lubricating grease with super acid and alkali chemical corrosion resistance for the optoelectronic chip industry and a preparation method thereof. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a super acid and alkali chemical corrosion resistant grease for the optoelectronic chip industry and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] The present invention provides a super acid and alkali chemical corrosion resistant lubricating grease for the optoelectronic chip industry, comprising the following raw materials in parts by weight:

[0007] 50-80 parts of refined perfluoropolyether base oil, 20-40 parts of polytetrafluoroethylene micropowder thickener, 0.5-3 parts of coupling agent, 0.1-3 parts of rust and corrosion inhibitor, 1-5 parts of dispersant.

[0008] Preferably, the refined perfluoropolyether base oil comprises at least one of tetrafluorooxetane monomer (D-type polyether) or hexafluoropropylene oxide (K-type polyether) anionic polymerization method, tetrafluoroethylene (Z-type polyether) or hexafluoropropylene (Y-type polyether) photo-oxidative perfluoroolefin polymerization method.

[0009] Preferably, the molecular weight of the refined perfluoropolyether base oil is 500-15000; the kinematic viscosity of the refined perfluoropolyether base oil at 40° C. is 80-800 cst; and the mass percentage of the refined perfluoropolyether base oil is 50-80.

[0010] Preferably, the specific surface area of ​​the polytetrafluoroethylene micropowder thickener is 2-10 m2 / g; the mass percentage of the polytetrafluoroethylene micropowder thickener is 20-40.

[0011] Preferably, the rust and corrosion inhibitor comprises at least one of organic olefin fatty acid, benzotriazole and its derivatives;

[0012] The coupling agent includes at least one of fluorine-modified titanate, fluorine-modified aluminate, and fluorinated organic borate;

[0013] The dispersant includes at least one of a fluorinated acrylic resin, a fluorinated epoxy resin, and the like.

[0014] Preferably, 4-7 parts of a formulation agent and 1-3 parts of an auxiliary agent are added to the grease.

[0015] Preferably, the preparation method of the formulation is:

[0016] Stir and mix the boron nitride thoroughly in a sufficient amount of 5% potassium permanganate solution, then wash with water and dry;

[0017] 4-7 parts of dry boron nitride, 1-3 parts of wollastonite, 4-7 parts of chitosan solution with a mass fraction of 2-5% and 2-3 parts of nano-silica sol are mixed and ball-milled at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a formulation.

[0018] Preferably, the preparation method of the auxiliary agent is:

[0019] Mix kaolin and 2-5% sodium silicate solution in a weight ratio of 2:5 to obtain kaolin solution;

[0020] 5-8 parts of kaolin liquid, 1-3 parts of yttrium oxide and 2-5 parts of citric acid are mixed and stirred thoroughly, and finally washed with water, filtered and dried to obtain an auxiliary agent.

[0021] A super acid and alkali chemical corrosion resistant grease for the optoelectronic chip industry, the grease preparation method comprising the following steps:

[0022] Heat the perfluoropolyether base oil to 80-100°C, add polytetrafluoroethylene powder, anticorrosion and rust inhibitor, coupling agent, dispersant and blending agent, auxiliary agent, stir and mix evenly, cool to room temperature, and grind or homogenize.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The super acid-base chemical corrosion-resistant grease composition for the optoelectronic chip industry of the present invention and the preparation method thereof fill the gap of grease for the domestic optoelectronic chip industry. Various functional additives are added to the grease to improve the mechanical stability of the product while enhancing the structural stability and service life of the product. The production process is simple and the production cycle is short. By adding a blending agent to match the auxiliary blending agent, boron nitride is used as the base material in the preparation of the blending agent. The boron nitride is treated with potassium permanganate solution and then blended with wollastonite, chitosan solution with a mass fraction of 2-5% and nano-silica sol for ball milling. Through the synergistic effect between the raw materials and the boron nitride coordination system, the performance stability of the system is enhanced. The auxiliary blending agent uses kaolin treated with sodium silicate solution and is blended and stirred sufficiently with yttrium oxide and citric acid. Through the synergistic effect between the raw materials, the synergistic effect of the auxiliary blending agent and the blending agent is enhanced, and the performance of the product is further improved. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The super acid and alkali chemical corrosion resistant lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0027] 50-80 parts of refined perfluoropolyether base oil, 20-40 parts of polytetrafluoroethylene micropowder thickener, 0.5-3 parts of coupling agent, 0.1-3 parts of rust and corrosion inhibitor, 1-5 parts of dispersant.

[0028] The refined perfluoropolyether base oil of this embodiment comprises at least one of tetrafluorooxetane monomer (D-type polyether) or hexafluoropropylene oxide (K-type polyether) anionic polymerization method, tetrafluoroethylene (Z-type polyether) or hexafluoropropylene (Y-type polyether) photo-oxidation perfluoroolefin polymerization method.

[0029] The molecular weight of the refined perfluoropolyether base oil in this embodiment is 500-15000; the kinematic viscosity of the refined perfluoropolyether base oil at 40° C. is 80-800 cst; and the mass percentage of the refined perfluoropolyether base oil is 50-80.

[0030] The specific surface area of ​​the polytetrafluoroethylene micropowder thickener in this embodiment is 2-10 m2 / g; the mass percentage of the polytetrafluoroethylene micropowder thickener is 20-40.

[0031] The rust and corrosion inhibitor of this embodiment includes at least one of organic olefin fatty acid, benzotriazole and its derivatives;

[0032] The coupling agent includes at least one of fluorine-modified titanate, fluorine-modified aluminate, and fluorinated organic borate;

[0033] The dispersant includes at least one of a fluorinated acrylic resin, a fluorinated epoxy resin, and the like.

[0034] The grease of this embodiment is further added with 4-7 parts of a blending agent and 1-3 parts of an auxiliary agent.

[0035] The preparation method of the formulation of this embodiment is:

[0036] Stir and mix the boron nitride thoroughly in a sufficient amount of 5% potassium permanganate solution, then wash with water and dry;

[0037] 4-7 parts of dry boron nitride, 1-3 parts of wollastonite, 4-7 parts of chitosan solution with a mass fraction of 2-5% and 2-3 parts of nano-silica sol are mixed and ball-milled at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a formulation.

[0038] The preparation method of the auxiliary agent of this embodiment is:

[0039] Mix kaolin and 2-5% sodium silicate solution in a weight ratio of 2:5 to obtain kaolin solution;

[0040] 5-8 parts of kaolin liquid, 1-3 parts of yttrium oxide and 2-5 parts of citric acid are mixed and stirred thoroughly, and finally washed with water, filtered and dried to obtain an auxiliary agent.

[0041] The present embodiment provides a super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry, and the grease preparation method comprises the following steps:

[0042] Heat the perfluoropolyether base oil to 80-100°C, add polytetrafluoroethylene powder, anticorrosion and rust inhibitor, coupling agent, dispersant and blending agent, auxiliary agent, stir and mix evenly, cool to room temperature, and grind or homogenize.

[0043] Example 1:

[0044] The super acid and alkali chemical corrosion resistant lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0045] 50 parts of refined perfluoropolyether base oil, 20 parts of polytetrafluoroethylene micropowder thickener, 0.5 parts of coupling agent, 0.1 parts of rust and corrosion inhibitor, and 1 part of dispersant.

[0046] The refined perfluoropolyether base oil of this embodiment includes tetrafluoroethylene oxide monomer (D-type polyether) or hexafluoropropylene oxide (K-type polyether) anionic polymerization method.

[0047] The molecular weight of the refined perfluoropolyether base oil of this embodiment is 500; the kinematic viscosity of the refined perfluoropolyether base oil at 40° C. is 80 cst; and the mass percentage of the refined perfluoropolyether base oil is 50.

[0048] The specific surface area of ​​the polytetrafluoroethylene micropowder thickener in this embodiment is 2m2 / g; the mass percentage of the polytetrafluoroethylene micropowder thickener is 20.

[0049] The rust and corrosion inhibitor of this embodiment includes organic olefin fatty acid;

[0050] The coupling agent includes a fluorine-modified titanate;

[0051] Dispersants include fluorinated acrylic resins.

[0052] In the grease of this embodiment, 4 parts of a blending agent and 1 part of an auxiliary agent are also added.

[0053] The preparation method of the formulation of this embodiment is:

[0054] Stir and mix the boron nitride thoroughly in a sufficient amount of 5% potassium permanganate solution, then wash with water and dry;

[0055] 4 parts of dry boron nitride, 1 part of wollastonite, 4 parts of chitosan solution with a mass fraction of 2% and 2 parts of nano-silica sol are mixed and ball-milled at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a formulation.

[0056] The preparation method of the auxiliary agent of this embodiment is:

[0057] Mix kaolin and 2% sodium silicate solution in a weight ratio of 2:5 to obtain kaolin solution;

[0058] 5 parts of kaolin liquid, 1 part of yttrium oxide and 2 parts of citric acid were mixed and stirred thoroughly, and finally washed with water, filtered and dried to obtain an auxiliary agent.

[0059] The present embodiment provides a super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry, and the grease preparation method comprises the following steps:

[0060] Heat the perfluoropolyether base oil to 80°C, add polytetrafluoroethylene powder, anticorrosion and rust inhibitor, coupling agent, dispersant, blending agent and auxiliary agent, stir and mix evenly, cool to room temperature, and grind or homogenize.

[0061] Example 2:

[0062] The super acid and alkali chemical corrosion resistant lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0063] 80 parts of refined perfluoropolyether base oil, 40 parts of polytetrafluoroethylene micropowder thickener, 3 parts of coupling agent, 3 parts of rust and corrosion inhibitor, and 5 parts of dispersant.

[0064] The refined perfluoropolyether base oil of this embodiment includes tetrafluoroethylene oxide monomer (D-type polyether) or hexafluoropropylene oxide (K-type polyether) anionic polymerization method.

[0065] The molecular weight of the refined perfluoropolyether base oil in this embodiment is 15000; the kinematic viscosity of the refined perfluoropolyether base oil at 40° C. is 800 cst; and the mass percentage of the refined perfluoropolyether base oil is 80.

[0066] The specific surface area of ​​the polytetrafluoroethylene micropowder thickener in this embodiment is 10m2 / g; the mass percentage of the polytetrafluoroethylene micropowder thickener is 0.

[0067] The rust and corrosion inhibitor of this embodiment includes organic olefin fatty acid;

[0068] The coupling agent includes a fluorine-modified titanate;

[0069] Dispersants include fluorinated acrylic resins.

[0070] 5.5 parts of a blending agent and 2 parts of an auxiliary blending agent are also added to the grease of this embodiment.

[0071] The preparation method of the formulation of this embodiment is:

[0072] Stir and mix the boron nitride thoroughly in a sufficient amount of 5% potassium permanganate solution, then wash with water and dry;

[0073] 5.5 parts of dry boron nitride, 2 parts of wollastonite, 5.5 parts of chitosan solution with a mass fraction of 3.5% and 2.5 parts of nano-silica sol were mixed and ball-milled at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling was completed, the mixture was washed with water and dried to obtain a formulation.

[0074] The preparation method of the auxiliary agent of this embodiment is:

[0075] Mix kaolin and 3.5% sodium silicate solution in a weight ratio of 2:5 to obtain kaolin solution;

[0076] 6.5 parts of kaolin liquid, 2 parts of yttrium oxide and 3.5 parts of citric acid were mixed and stirred thoroughly, and finally washed with water, filtered and dried to obtain an auxiliary agent.

[0077] The present embodiment provides a super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry, and the grease preparation method comprises the following steps:

[0078] Heat the perfluoropolyether base oil to 90°C, add polytetrafluoroethylene powder, anticorrosion and rust inhibitor, coupling agent, dispersant, blending agent and auxiliary agent, stir and mix evenly, cool to room temperature, and grind or homogenize.

[0079] Example 3:

[0080] The super acid and alkali chemical corrosion resistant lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0081] 65 parts of refined perfluoropolyether base oil, 30 parts of polytetrafluoroethylene micropowder thickener, 2 parts of coupling agent, 2 parts of rust and corrosion inhibitor, and 3 parts of dispersant.

[0082] The refined perfluoropolyether base oil of this embodiment includes tetrafluoroethylene (Z-type polyether).

[0083] The molecular weight of the refined perfluoropolyether base oil in this embodiment is 10,000; the kinematic viscosity of the refined perfluoropolyether base oil at 40° C. is 500 cst; and the mass percentage of the refined perfluoropolyether base oil is 65.

[0084] The specific surface area of ​​the polytetrafluoroethylene micropowder thickener in this embodiment is 6m2 / g; the mass percentage of the polytetrafluoroethylene micropowder thickener is 30.

[0085] The rust and corrosion inhibitors of this embodiment include benzotriazole and its derivatives;

[0086] Coupling agents include fluorinated organoborates;

[0087] Dispersants include fluorinated epoxy resins.

[0088] 5.5 parts of a blending agent and 2 parts of an auxiliary blending agent are also added to the grease of this embodiment.

[0089] The preparation method of the formulation of this embodiment is:

[0090] Stir and mix the boron nitride thoroughly in a sufficient amount of 5% potassium permanganate solution, then wash with water and dry;

[0091] 5 parts of dry boron nitride, 2 parts of wollastonite, 5.5 parts of chitosan solution with a mass fraction of 3.5% and 2-3 parts of nano-silica sol are mixed and ball-milled at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a formulation.

[0092] The preparation method of the auxiliary agent of this embodiment is:

[0093] Mix kaolin and 3.5% sodium silicate solution in a weight ratio of 2:5 to obtain kaolin solution;

[0094] 6.5 parts of kaolin liquid, 2 parts of yttrium oxide and 3.5 parts of citric acid were mixed and stirred thoroughly, and finally washed with water, filtered and dried to obtain an auxiliary agent.

[0095] The present embodiment provides a super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry, and the grease preparation method comprises the following steps:

[0096] Heat the perfluoropolyether base oil to 90°C, add polytetrafluoroethylene powder, anticorrosion and rust inhibitor, coupling agent, dispersant, blending agent and auxiliary agent, stir and mix evenly, cool to room temperature, and grind or homogenize.

[0097] The evaporation amount of the product of Example 3 (GB / T7325, 200°C, 22H) can reach a minimum of 0.03, while the evaporation amount of the product without adding auxiliary agents is 0.12, and the evaporation amount of the product without adding a formulation is 0.14.

[0098] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0099] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry, characterized in that: It includes the following raw materials in parts by weight: 50-80 parts of refined perfluoropolyether base oil, 20-40 parts of polytetrafluoroethylene micropowder thickener, 0.5-3 parts of coupling agent, 0.1-3 parts of rust and corrosion inhibitor, 1-5 parts of dispersant.

2. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 1, characterized in that: The refined perfluoropolyether base oil comprises at least one of tetrafluorooxetane monomer (D-type polyether) or hexafluoropropylene oxide (K-type polyether) anionic polymerization method, tetrafluoroethylene (Z-type polyether) or hexafluoropropylene (Y-type polyether) photo-oxidation perfluoroolefin polymerization method.

3. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 2, characterized in that: The molecular weight of the refined perfluoropolyether base oil is 500-15000; the kinematic viscosity of the refined perfluoropolyether base oil at 40° C. is 80-800 cst; and the mass percentage of the refined perfluoropolyether base oil is 50-80.

4. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 2, characterized in that: The specific surface area of ​​the polytetrafluoroethylene micropowder thickener is 2-10m2 / g; the mass percentage of the polytetrafluoroethylene micropowder thickener is 20-40.

5. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 2, characterized in that: The rust and corrosion inhibitor comprises at least one of organic olefin fatty acid, benzotriazole and its derivatives; The coupling agent includes at least one of fluorine-modified titanate, fluorine-modified aluminate, and fluorinated organic borate; The dispersant includes at least one of a fluorinated acrylic resin, a fluorinated epoxy resin, and the like.

6. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 2, characterized in that: 4-7 parts of a formulation agent and 1-3 parts of an auxiliary agent are also added to the grease.

7. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 6, characterized in that: The preparation method of the formulation is: Stir and mix the boron nitride thoroughly in a sufficient amount of 5% potassium permanganate solution, then wash with water and dry; 4-7 parts of dry boron nitride, 1-3 parts of wollastonite, 4-7 parts of chitosan solution with a mass fraction of 2-5% and 2-3 parts of nano-silica sol are mixed and ball-milled at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a formulation.

8. The super acid and alkali resistant chemical corrosion grease for the optoelectronic chip industry according to claim 7, characterized in that: The preparation method of the auxiliary agent is: Mix kaolin and 2-5% sodium silicate solution in a weight ratio of 2:5 to obtain kaolin solution; 5-8 parts of kaolin liquid, 1-3 parts of yttrium oxide and 2-5 parts of citric acid are mixed and stirred thoroughly, and finally washed with water, filtered and dried to obtain an auxiliary agent.

9. The super acid and alkali chemical corrosion resistant grease for the optoelectronic chip industry according to claim 8, characterized in that: The grease preparation method comprises the following steps: Heat the perfluoropolyether base oil to 80-100°C, add polytetrafluoroethylene powder, anticorrosion and rust inhibitor, coupling agent, dispersant and blending agent, auxiliary agent, stir and mix evenly, cool to room temperature, and grind or homogenize.