Automobile gear selecting and shifting inhaul cable lubricating grease and preparation method thereof

Abstract

The invention discloses lubricating grease for an automobile gear selecting and shifting inhaul cable. The lubricating grease comprises 5-20% of a thickening agent; 70-90% of base oil; 5-10% of an anti-wear reagent at extreme pressure; 0.5-2% of an antioxidant; the thickening agent comprises one or a mixture of more of lithium 12-hydroxystearate and lithium stearate, the base oil is synthetic oil which comprises one or a mixture of more of poly-alpha olefin, synthetic ester, polyether and methyl silicone oil, the anti-wear reagent at extreme pressure comprises polytetrafluoroethylene micro powder, MCA, T306 and T203, and the anti-wear agent at extreme pressure comprises polytetrafluoroethylene micro powder, polydimethylsiloxane, polydimethylsiloxane and polydimethylsiloxane. The antioxidant comprises one or a mixture of more of a phenol type antioxidant and an amine type antioxidant, and the antirust preservative comprises one or a mixture of more of benzotriazole, a thiadiazole derivative, sulfonate, carboxylic acid and a derivative thereof, organic phosphoric acid and salts thereof, organic amine and a heterocyclic compound. The friction coefficient is lower, the load efficiency and the stroke efficiency are higher, and the service life of the inhaul cable can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile gear selection and shift cable lubricating grease, and in particular to automobile gear selection and shift cable lubricating grease and a preparation method thereof. Background Art

[0002] The car's gear selection and shifting function is something that the driver can directly feel, and it is one of the indicators that affect customers' evaluation of car performance. The car's gear selection and shifting function is achieved by the coordinated use of three systems, namely the clutch system, the gear selection and shifting control system, and the transmission system. The key system is the gear selection and shifting control system, which mainly transmits the force of the driver's operating the shift handle to the transmission through the gear selection and shifting cable, and operates the transmission gear selection and shifting rocker arm to select and shift gears to achieve the speed shifting function. The gear selection and shifting cable is an important component that affects the handling performance. The gear selection and shifting cable is generally composed of a steel wire core and a plastic protective cover, and the gap is filled with grease to play a role in lubrication and sealing. Therefore, the selection of grease for the car's gear selection and shifting cable is very important.

[0003] At present, most of the shift cable greases used in the market are imported brands, which are not only expensive, but also need to be improved in terms of performance, especially load efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art mentioned in the background technology, and to propose an automobile shift cable grease, which can effectively improve the load efficiency of the shift cable, increase the service life of the cable, can completely replace imported products, and is relatively cheap.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lubricating grease for a shifting cable of an automobile comprises 5-20% of a thickener, 70-90% of a base oil, 5-10% of an extreme pressure anti-wear agent, 0.5-2% of an antioxidant, and 0.1-3% of an anti-rust and anti-corrosion agent.

[0007] As a further feature of the method of the present invention, the thickener includes one or a mixture of lithium dodecyl stearate and lithium stearate.

[0008] As a further feature of the method of the present invention, the base oil is a synthetic oil, including one or a mixture of polyalphaolefins, synthetic esters, polyethers, and methyl silicone oils.

[0009] As a further feature of the method of the present invention, the kinematic viscosity of the base oil at 40°C is 500-2000 mm2 / s.

[0010] As a further feature of the method of the present invention, the extreme pressure anti-wear agent includes polytetrafluoroethylene powder, MCA, T306, and T203.

[0011] As a further feature of the method of the present invention, the antioxidant comprises one or a mixture of phenolic antioxidants and amine antioxidants.

[0012] As a further feature of the method of the present invention, the rust and corrosion inhibitor includes one or a mixture of multiple of benzotriazole, thiadiazole derivatives, sulfonates, carboxylic acids and their derivatives, organic phosphoric acids and their salts, organic amines, and heterocyclic compounds.

[0013] As a further aspect of the method of the present invention, a method for preparing a lubricating grease for a vehicle shift cable comprises the following steps: S1, adding about 1 / 3 of base oil into a clean reactor and heating it to 70°C-80°C;

[0014] S2, add measured dodecyl hydroxystearic acid or stearic acid, stir to dissolve, then slowly add lithium hydroxide aqueous solution, and saponify at 90°C-110°C for 1-2h;

[0015] S3. After the saponification is completed, heat to 120℃-130℃ and dehydrate for 1-2h;

[0016] S4, add about 1 / 3 of the base oil, then raise the temperature of the reactor to 200℃-220℃, keep it warm for 10min-30min, and add the remaining oil for cooling;

[0017] S5. When the temperature drops to 80-100℃, add additives and grind 2-3 times to make grease.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The gear selection and shift cable grease provided by the present invention can effectively improve the load efficiency of the gear selection and shift cable, has a lower friction coefficient, and higher load efficiency and stroke efficiency, and is more conducive to extending the service life of the cable. DETAILED DESCRIPTION

[0020] The content of the present invention can be more easily understood by selecting the following detailed description of the preferred implementation method of the present invention and the embodiments included. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art to which the present invention belongs. When there is a conflict, the definition in this specification shall prevail.

[0021] As used herein, the term "prepared from" is synonymous with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variation thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0022] The conjunction "consisting of excludes any unspecified element, step, or component. If used in a claim, this phrase renders the claim closed-ended so that it does not include materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the body of a claim rather than immediately following the subject matter, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0023] When amount, concentration or other value or parameter is expressed as range, preferred range or a series of upper preferred value and lower preferred value limit range, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value and any range lower limit or preferred value, regardless of whether the range is disclosed separately. For example, when disclosing range "1 to 5", described range should be interpreted as including range "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5" etc. When numerical range is described in this article, unless otherwise stated, the range is intended to include its end value and all integers and fractions within the range.

[0024] Singular forms include plural references unless the context clearly indicates otherwise. "Optional" or "either" means that the subsequently described event or incident may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

[0025] Approximate terms in the specification and claims are used to modify quantities, indicating that the present invention is not limited to the specific quantity, but also includes acceptable and modified parts close to the quantity without causing changes in the relevant basic functions. Accordingly, the use of "about", "approximately", etc. to modify a numerical value means that the present invention is not limited to the exact numerical value. In some examples, the approximate terms may correspond to the accuracy of the instrument for measuring the numerical value. In the specification and claims of this application, range limitations can be combined and / or interchanged, and if not otherwise stated, these ranges include all subranges contained therein.

[0026] In addition, the indefinite articles "a" and "an" before the elements or components of the present invention have no restrictions on the quantity requirements (i.e. the number of occurrences) of the elements or components. Therefore, "a" or "an" should be interpreted as including one or at least one, and the elements or components in the singular form also include the plural form, unless the number is obviously intended to be in the singular form.

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Embodiment 1

[0029] A kind of automobile shift cable lubricating grease, comprising 5-20% thickener; 70-90% base oil; 5-10% extreme pressure anti-wear agent; 0.5-2% antioxidant; 0.1-3% rust and corrosion inhibitor, wherein the thickener comprises 12-hydroxy lithium stearate, lithium stearate and a mixture thereof; the base oil is a synthetic oil, including poly-alpha olefin, synthetic ester, polyether, methyl silicone oil and a mixed oil thereof, and the kinematic viscosity of the base oil at 40°C is 500-2000mm2 / s, preferably the viscosity is 800-1500mm2 / s; extreme pressure anti-wear agents include polytetrafluoroethylene powder, MCA, T306, T203, etc.; antioxidants include phenolic antioxidants and amine antioxidants or mixtures thereof, preferably diphenylamine and 2,6-di-tert-butyl-p-cresol in this method; rust and corrosion inhibitors include benzotriazole and thiadiazole derivatives, sulfonates, carboxylic acids and their derivatives, organic phosphoric acids and salts, organic amines and heterocyclic compounds.

[0030] Embodiment 2

[0031] A method for preparing a lubricating grease for a vehicle shift cable comprises the following steps:

[0032] 1) Add about 1 / 3 of base oil into a clean reactor, heat to 70°C-80°C, then add measured 12-hydroxystearic acid or stearic acid, stir to dissolve, then slowly add lithium hydroxide aqueous solution, and saponify at 90°C-110°C for 1-2h;

[0033] 2) After the saponification is completed, heat to 120℃-130℃ and dehydrate for 1-2h;

[0034] 3) Add about 1 / 3 of the base oil, then raise the temperature of the reactor to 200°C-220°C, keep it warm for 10min-30min, and add the remaining oil for cooling;

[0035] 4) When the temperature drops to 80-100°C, add additives and grind 2-3 times to form fat.

[0036] Embodiment 3

[0037] A method for preparing a lubricating grease for a vehicle shift cable comprises the following steps:

[0038] 1) Add 400g of PAO100 base oil to a clean reactor, heat to 80°C, then add 90g of 12-hydroxystearic acid, stir to dissolve, then slowly add 100g of an aqueous solution containing 13g of lithium hydroxide, and react at 105°C for 2h;

[0039] 2) After the saponification is completed, heat to 125°C and dehydrate for 1.5 hours;

[0040] 3) Add 400 g of PAO100 base oil, then raise the reactor temperature to 210° C., keep warm for 10 min, add 200 g of PAO100 base oil and cool;

[0041] 4) When the temperature drops to 100°C, add 30g polytetrafluoroethylene, 30g MCA, 20g T306, 5g diphenylamine, 3g 2,6-di-tert-butyl-p-cresol, and 5g benzotriazole, grind 2-3 times to form fat. Its properties are shown in Table 1.

[0042] Embodiment 4

[0043] A method for preparing a lubricating grease for a vehicle shift cable comprises the following steps:

[0044] 1) Add 500g of methyl silicone base oil to a clean reactor, heat to 75°C, then add 100g of stearic acid, stir to dissolve, then slowly add 100g of an aqueous solution containing 12g of lithium hydroxide, and react at 100°C for 2h;

[0045] 2) After the saponification is completed, heat to 125°C and dehydrate for 2 hours;

[0046] 3) Add 300 g of methyl silicone oil, then raise the temperature of the reactor to 210°C, keep warm for 20 min, add 200 g of methyl silicone oil and cool;

[0047] 4) When the temperature drops to 90°C, add 40g of organic molybdenum, 20g of MCA, 20g of T203, 6g of 2,6-di-tert-butyl-p-cresol, and 5g of a thiadiazole derivative, grind 2-3 times to form a fat. The properties are shown in Table 1.

[0048] Embodiment 5

[0049] A method for preparing a lubricating grease for a vehicle shift cable comprises the following steps:

[0050] 1) The base oil is a mixture of PAO100 and methyl silicone oil in a ratio of 1:1. Add 500g of base oil to a clean reactor, heat to 75°C, then add 100g of 12-hydroxystearic acid, stir to dissolve, then slowly add 100g of an aqueous solution containing 13g of lithium hydroxide, and react at 110°C for 1.5h;

[0051] 2) After the saponification is completed, heat to 120°C and dehydrate for 2 hours;

[0052] 3) Add 300g of base oil, then raise the temperature of the reactor to 200°C, keep it warm for 30min, add 200g of base oil and cool it down;

[0053] 4) When the temperature drops to 80°C, add 40g polytetrafluoroethylene powder, 20g MCA, 30g T203, 8g 2,6-di-tert-butyl-p-cresol, and 6g thiadiazole derivative, grind 2-3 times to form fat. Its properties are shown in Table 1.

[0054]

[0055]

[0056] The examples referred to herein are merely illustrative and are used to explain some features of the method of the present invention. The appended claims are intended to claim the widest possible range that can be imagined, and the embodiments presented herein are only illustrations of selected implementations according to the combination of all possible embodiments. Therefore, it is the applicant's intention that the appended claims are not limited by the selection of examples that illustrate the features of the present invention. Some numerical ranges used in the claims also include sub-ranges within them, and changes in these ranges should also be interpreted as being covered by the appended claims where possible.

Claims

1. A grease for a car shift cable, characterized in that: It includes 5-20% thickener, 70-90% base oil, 5-10% extreme pressure anti-wear agent, 0.5-2% antioxidant, and 0.1-3% anti-rust and anti-corrosion agent.

2. The automotive gear selector and shift cable lubricating grease according to claim 1, characterized in that: The thickener includes one or a mixture of lithium dodecyl stearate and lithium stearate.

3. The automotive shift cable grease according to claim 1, characterized in that: The base oil is a synthetic oil, including one or a mixture of polyalphaolefin, synthetic ester, polyether, and methyl silicone oil.

4. The automotive shift cable grease according to claim 3, characterized in that: The kinematic viscosity of the base oil at 40°C is 500-2000mm2 / s.

5. The automotive shift cable grease according to claim 1, characterized in that: The extreme pressure anti-wear agent includes polytetrafluoroethylene powder, MCA, T306 and T203.

6. The automotive shift cable grease according to claim 1, characterized in that: The antioxidant includes one or a mixture of phenolic antioxidants and amine antioxidants.

7. The automotive shift cable grease according to claim 1, characterized in that: The rust and corrosion inhibitors include one or a mixture of multiple of benzotriazole, thiadiazole derivatives, sulfonates, carboxylic acids and their derivatives, organic phosphoric acids and their salts, organic amines, and heterocyclic compounds.

8. A method for preparing a lubricating grease for a vehicle shift cable according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1, adding about 1 / 3 of base oil into a clean reactor and heating it to 70°C-80°C; S2, add measured dodecyl hydroxystearic acid or stearic acid, stir to dissolve, then slowly add lithium hydroxide aqueous solution, and saponify at 90°C-110°C for 1-2h; S3. After the saponification is completed, heat to 120℃-130℃ and dehydrate for 1-2h; S4, add about 1 / 3 of the base oil, then raise the temperature of the reactor to 200℃-220℃, keep it warm for 10min-30min, and add the remaining oil for cooling; S5. When the temperature drops to 80-100℃, add additives and grind 2-3 times to make grease.

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