Ultrahigh-temperature-stability lubricating grease for photoelectric chip industry

Abstract

The invention relates to ultrahigh-temperature-stability lubricating grease for the photoelectric chip industry. The lubricating grease is prepared from the following raw materials in parts by weight: 55-75 parts of base oil, 10-20 parts of a polyurea thickening agent, 0.1-3 parts of an antioxidant, 0.1-3 parts of an anti-rust preservative, 1-5 parts of an anti-wear reagent at extreme pressure, 5-15 parts of a filling agent, 1-5 parts of a dispersing agent and 1-5 parts of a flatting agent. The ultra-high-temperature-stability lubricating grease for the photoelectric chip industry fills the blank of domestic lubricating grease for the photoelectric chip industry, various functional auxiliaries are added into the lubricating grease, the performance of the product is improved, the high-temperature resistance of the product is enhanced, the service life of the product is prolonged, the cost is low, biodegradation is achieved, meanwhile, boron nitride is subjected to modification treatment, and the service life of the product is prolonged. Boron nitride treated by a specific modification treatment agent is better blended and coordinated in a system, and the product performance is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating grease, and in particular to an ultra-high temperature stable lubricating grease used in the optoelectronic chip industry. Background Art

[0002] A strong chip means a strong industry, and a prosperous chip means a prosperous economy. In order to fill the gap in high-temperature grease used in the domestic optoelectronic chip industry, it is urgent to develop a new ultra-high temperature stability grease for the optoelectronic chip industry to meet the needs of the optoelectronic chip market. Summary of the invention

[0003] In view of the defects of the prior art, the purpose of the present invention is to provide an ultra-high temperature stable grease for the optoelectronic chip industry to solve the problems raised in the above background technology.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] The present invention provides an ultra-high temperature stability lubricating grease for the optoelectronic chip industry, comprising the following raw materials in parts by weight:

[0006] 55-75 parts of base oil, 10-20 parts of polyurea thickener, 0.1-3 parts of antioxidant, 0.1-3 parts of rust and corrosion inhibitor, 1-5 parts of extreme pressure and anti-wear agent, 5-15 parts of filler, 1-5 parts of dispersant, and 1-5 parts of leveling agent.

[0007] Preferably, the base oil includes at least one of synthetic ester oil, polyether oil, and vegetable oil;

[0008] The polyurea thickener can be prepared by reacting at least one of fatty amines, aromatic amines, and cycloalkylamines with large and small molecular weights with at least one of MDI, TDI, and HDI;

[0009] Preferably, the antioxidant comprises at least one of amino ether derivatives, organic selenium, aniline or phenol and its derivatives;

[0010] Preferably, the rust and corrosion inhibitor comprises at least one of metal phosphate, organic olefin fatty acid, benzotriazole and derivatives thereof.

[0011] Preferably, the extreme pressure anti-wear agent includes at least one of alkyl thiophosphates, alkyl thiocarbamates, and organic borates.

[0012] Preferably, the filler includes at least one of boron nitride, MCA, MPP, metals and oxides thereof.

[0013] Preferably, the boron nitride is further modified, and the specific modification method is:

[0014] The nano-bentonite is heat treated at 210-230°C for 5-10 minutes, then cooled to 55°C at a rate of 2-5°C / min, and kept warm;

[0015] 5-7 parts of heat-insulated nano-bentonite, 2-5 parts of nano-wollastonite, 3-6 parts of 5% by mass citric acid solution and 2-4 parts of 2-5% by mass lanthanum nitrate solution are fully mixed to obtain a modified treatment agent;

[0016] Place boron nitride in a modification agent that is 3-5 times the total amount of boron nitride, stir and mix thoroughly, then wash with water and dry.

[0017] Nano-bentonite is heat-treated to optimize the interlayer spacing, and then needle-shaped wollastonite is used to blend sodium citrate solution and lanthanum nitrate solution to coordinate and cooperate with flake boron nitride. The flake structure is interspersed in the system to further enhance the system performance.

[0018] Preferably, the dispersant includes at least one of a polymer block copolymer containing an acidic group, a polyurethane block copolymer, a long-chain polyamide and a polar acid ester copolymer.

[0019] Preferably, the leveling agent includes at least one of an acrylate copolymer and a modified copolymer thereof, and a modified polyacrylic acid copolymer.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The ultra-high temperature stability grease for the optoelectronic chip industry of the present invention fills the gap in the grease for the domestic optoelectronic chip industry. Various functional additives are added to the grease to improve the performance of the product while enhancing the high temperature resistance and service life of the product. The grease is low in cost and biodegradable. At the same time, the boron nitride is modified and treated with a specific modification agent to better blend and coordinate in the system, and the product performance is further improved. DETAILED DESCRIPTION

[0022] 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.

[0023] The ultra-high temperature stability lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0024] 55-75 parts of base oil, 10-20 parts of polyurea thickener, 0.1-3 parts of antioxidant, 0.1-3 parts of rust and corrosion inhibitor, 1-5 parts of extreme pressure and anti-wear agent, 5-15 parts of filler, 1-5 parts of dispersant, and 1-5 parts of leveling agent.

[0025] The base oil of this embodiment includes at least one of synthetic ester oil, polyether oil, and vegetable oil;

[0026] The polyurea thickener can be prepared by reacting at least one of fatty amines, aromatic amines, and cycloalkylamines with large and small molecular weights with at least one of MDI, TDI, and HDI;

[0027] The antioxidant of this embodiment includes at least one of amino ether derivatives, organic selenium, aniline or phenol and its derivatives;

[0028] The rust and corrosion inhibitor of this embodiment includes at least one of metal phosphate, organic olefin fatty acid, benzotriazole and derivatives thereof.

[0029] The extreme pressure anti-wear agent of this embodiment includes at least one of alkyl thiophosphates, alkyl thiocarbamates, and organic borates.

[0030] The filler of this embodiment includes at least one of boron nitride, MCA, MPP, metal and oxides thereof.

[0031] The boron nitride of this embodiment is also modified, and the specific modification method is:

[0032] The nano-bentonite is heat treated at 210-230°C for 5-10 minutes, then cooled to 55°C at a rate of 2-5°C / min, and kept warm;

[0033] 5-7 parts of heat-insulated nano-bentonite, 2-5 parts of nano-wollastonite, 3-6 parts of 5% by mass citric acid solution and 2-4 parts of 2-5% by mass lanthanum nitrate solution are fully mixed to obtain a modified treatment agent;

[0034] Place boron nitride in a modification agent that is 3-5 times the total amount of boron nitride, stir and mix thoroughly, then wash with water and dry.

[0035] The dispersant of this embodiment includes at least one of a polymer block copolymer containing an acidic group, a polyurethane block copolymer, a long-chain polyamide and a polar acid ester copolymer.

[0036] The leveling agent of this embodiment includes at least one of an acrylate copolymer and a modified copolymer thereof, and a modified polyacrylic acid copolymer.

[0037] Example 1:

[0038] The ultra-high temperature stability lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0039] 55 parts of base oil, 10 parts of polyurea thickener, 0.1 parts of antioxidant, 0.1 parts of rust and corrosion inhibitor, 1 part of extreme pressure antiwear agent, 5 parts of filler, 1 part of dispersant, and 1 part of leveling agent.

[0040] The base oil of this embodiment includes synthetic ester oil;

[0041] The polyurea thickener can be prepared by reacting fatty amines of large and small molecular weights with MDI;

[0042] The antioxidant of this embodiment includes amino ether derivatives;

[0043] The rust and corrosion inhibitor of this embodiment includes a metal phosphate.

[0044] The extreme pressure anti-wear agent of this embodiment includes alkyl thiophosphate.

[0045] The filler of this embodiment includes boron nitride.

[0046] The boron nitride of this embodiment is also modified, and the specific modification method is:

[0047] The nano-bentonite was heat treated at 210°C for 5 min, then cooled to 55°C at a rate of 2°C / min and kept warm;

[0048] 5 parts of heat-insulated nano-bentonite, 2 parts of nano-wollastonite, 3 parts of 5% by mass citric acid solution and 2 parts of 2% by mass lanthanum nitrate solution are fully mixed to obtain a modified treatment agent;

[0049] Place boron nitride in a modification agent that is three times the total amount of boron nitride, stir and mix thoroughly, then wash with water and dry.

[0050] The dispersant of this embodiment includes a polymer block copolymer containing an acidic group.

[0051] The leveling agent of this embodiment includes acrylate copolymer and modified copolymer thereof.

[0052] Example 2:

[0053] The ultra-high temperature stability lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0054] 75 parts of base oil, 20 parts of polyurea thickener, 3 parts of antioxidant, 3 parts of rust and corrosion inhibitor, 5 parts of extreme pressure and anti-wear agent, 15 parts of filler, 5 parts of dispersant, and 5 parts of leveling agent.

[0055] The base oil of this embodiment includes synthetic ester oil;

[0056] The polyurea thickener can be prepared by reacting fatty amines of large and small molecular weights with MDI;

[0057] The antioxidant of this embodiment includes amino ether derivatives;

[0058] The rust and corrosion inhibitor of this embodiment includes a metal phosphate.

[0059] The extreme pressure anti-wear agent of this embodiment includes alkyl thiophosphate.

[0060] The filler of this embodiment includes boron nitride.

[0061] The boron nitride of this embodiment is also modified, and the specific modification method is:

[0062] The nano-bentonite was heat treated at 230°C for 10 min, then cooled to 55°C at a rate of 5°C / min and kept warm;

[0063] 7 parts of heat-insulated nano-bentonite, 5 parts of nano-wollastonite, 6 parts of 5% by mass citric acid solution and 4 parts of 5% by mass lanthanum nitrate solution are fully mixed to obtain a modified treatment agent;

[0064] Place boron nitride in a modification agent that is 5 times the total amount of boron nitride, stir and mix thoroughly, then wash with water and dry.

[0065] The dispersant of this embodiment includes a polymer block copolymer containing an acidic group.

[0066] The leveling agent of this embodiment includes acrylate copolymer and modified copolymer thereof.

[0067] Example 3:

[0068] The ultra-high temperature stability lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0069] 60 parts of base oil, 15 parts of polyurea thickener, 2 parts of antioxidant, 2 parts of rust and corrosion inhibitor, 3 parts of extreme pressure and anti-wear agent, 10 parts of filler, 3 parts of dispersant, and 3 parts of leveling agent.

[0070] The base oil of this embodiment includes synthetic ester oil;

[0071] The polyurea thickener can be prepared by reacting fatty amines of large and small molecular weights with MDI;

[0072] The antioxidant of this embodiment includes amino ether derivatives;

[0073] The rust and corrosion inhibitor of this embodiment includes a metal phosphate.

[0074] The extreme pressure anti-wear agent of this embodiment includes alkyl thiophosphate.

[0075] The filler of this embodiment includes boron nitride.

[0076] The boron nitride of this embodiment is also modified, and the specific modification method is:

[0077] The nano-bentonite was heat treated at 220°C for 7 min, then cooled to 55°C at a rate of 3.5°C / min and kept warm;

[0078] 6 parts of heat-insulated nano-bentonite, 3.5 parts of nano-wollastonite, 4.5 parts of 5% by mass citric acid solution and 3 parts of 3.5% by mass lanthanum nitrate solution are fully mixed to obtain a modified treatment agent;

[0079] Place boron nitride in a modification agent that is three times the total amount of boron nitride, stir and mix thoroughly, then wash with water and dry.

[0080] The dispersant of this embodiment includes a polymer block copolymer containing an acidic group.

[0081] The leveling agent of this embodiment includes acrylate copolymer and modified copolymer thereof.

[0082] Example 4:

[0083] The ultra-high temperature stability lubricating grease for the optoelectronic chip industry of this embodiment includes the following raw materials in parts by weight:

[0084] 58 parts of base oil, 12 parts of polyurea thickener, 1 part of antioxidant, 1 part of rust and corrosion inhibitor, 2 parts of extreme pressure and anti-wear agent, 8 parts of filler, 2 parts of dispersant, and 2 parts of leveling agent.

[0085] The base oil of this embodiment includes synthetic ester oil;

[0086] The polyurea thickener can be prepared by reacting fatty amines of large and small molecular weights with MDI;

[0087] The antioxidant of this embodiment includes amino ether derivatives;

[0088] The rust and corrosion inhibitor of this embodiment includes a metal phosphate.

[0089] The extreme pressure anti-wear agent of this embodiment includes alkyl thiophosphate.

[0090] The filler of this embodiment includes boron nitride.

[0091] The boron nitride of this embodiment is also modified, and the specific modification method is:

[0092] The nano-bentonite was heat treated at 216°C for 6 min, then cooled to 55°C at a rate of 3°C / min and kept warm;

[0093] 6 parts of heat-insulated nano-bentonite, 3 parts of nano-wollastonite, 4 parts of 5% by mass citric acid solution and 3 parts of 2-5% by mass lanthanum nitrate solution are fully mixed to obtain a modified treatment agent;

[0094] Place boron nitride in a modifying agent that is 4 times the total amount of boron nitride, stir and mix thoroughly, then wash with water and dry.

[0095] The dispersant of this embodiment includes a polymer block copolymer containing an acidic group.

[0096] The leveling agent of this embodiment includes acrylate copolymer and modified copolymer thereof.

[0097] The innovation of the present invention is that the interlamellar spacing of nano-bentonite is optimized by heat treatment, and the sodium citrate solution and lanthanum nitrate solution are coordinated and formulated by needle-shaped wollastonite, and flake boron nitride is used together. The flake structure is interspersed in the system to further enhance the performance of the system. The performance stability of the product is significantly improved by the coordination and synergy between boron nitride and nano-bentonite.

[0098] Various functional additives are added to the grease, which improves the performance of the product while enhancing the high temperature resistance and service life of the product. It is low-cost and biodegradable. At the same time, the boron nitride is modified and treated with a specific modifying agent to better blend and coordinate in the system, and the product performance is further improved.

[0099] 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.

[0100] 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. An ultra-high temperature stable grease for the optoelectronic chip industry, characterized in that: It includes the following raw materials in parts by weight: 55-75 parts of base oil, 10-20 parts of polyurea thickener, 0.1-3 parts of antioxidant, 0.1-3 parts of rust and corrosion inhibitor, 1-5 parts of extreme pressure and anti-wear agent, 5-15 parts of filler, 1-5 parts of dispersant, and 1-5 parts of leveling agent.

2. The ultra-high temperature stability grease for the optoelectronic chip industry according to claim 1, characterized in that: The base oil includes at least one of synthetic ester oil, polyether oil and vegetable oil. The polyurea thickener can be prepared by reacting at least one of fatty amines, aromatic amines, and cycloalkylamines with large and small molecular weights with at least one of MDI, TDI, and HDI.

3. The ultra-high temperature stability grease for the optoelectronic chip industry according to claim 1, characterized in that: The antioxidant includes at least one of amino ether derivatives, organic selenium, aniline or phenol and derivatives thereof.

4. The ultra-high temperature stability grease for the optoelectronic chip industry according to claim 1, characterized in that: The rust and corrosion inhibitor comprises at least one of metal phosphate, organic olefin fatty acid, benzotriazole and derivatives thereof.

5. The ultra-high temperature stable grease for the optoelectronic chip industry according to claim 1, characterized in that: The extreme pressure anti-wear agent includes at least one of alkyl thiophosphates, alkyl thiocarbamates, and organic borates.

6. The ultra-high temperature stability grease for the optoelectronic chip industry according to claim 1, characterized in that: The filler includes at least one of boron nitride, MCA, MPP, metal and oxides thereof.

7. The ultra-high temperature stability lubricating grease for the optoelectronic chip industry according to claim 6, characterized in that: The boron nitride is also modified, and the specific modification method is: The nano-bentonite is heat treated at 210-230°C for 5-10 minutes, then cooled to 55°C at a rate of 2-5°C / min, and kept warm; 5-7 parts of heat-insulated nano-bentonite, 2-5 parts of nano-wollastonite, 3-6 parts of 5% by mass citric acid solution and 2-4 parts of 2-5% by mass lanthanum nitrate solution are mixed to obtain a modified treatment agent; Place the boron nitride in a modification agent that is 3-5 times the total amount of the boron nitride, stir and mix thoroughly, then wash with water and dry.

8. The ultra-high temperature stable grease for the optoelectronic chip industry according to claim 1, characterized in that: The dispersant includes at least one of a polymer block copolymer containing an acidic group, a polyurethane block copolymer, a long-chain polyamide and a polar acid ester copolymer.

9. The ultra-high temperature stable grease for the optoelectronic chip industry according to claim 1, characterized in that: The leveling agent comprises at least one of an acrylate copolymer and a modified copolymer thereof and a modified polyacrylic acid copolymer.