CN103013627A - Degradable lubricating grease for locomotive wheel flange and preparation method - Google Patents
Degradable lubricating grease for locomotive wheel flange and preparation method Download PDFInfo
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- CN103013627A CN103013627A CN2012105663399A CN201210566339A CN103013627A CN 103013627 A CN103013627 A CN 103013627A CN 2012105663399 A CN2012105663399 A CN 2012105663399A CN 201210566339 A CN201210566339 A CN 201210566339A CN 103013627 A CN103013627 A CN 103013627A
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Abstract
The invention relates to degradable lubricating grease for a locomotive wheel flange, and a preparation method. The degradable lubricating grease for the locomotive wheel flange is characterized in that the degradable lubricating grease is prepared by the following raw materials by weight percent: 70%-86% of base oil, 10%-20% of thickening agent, 1%-5% of antioxygen, 1%-3% of antirust agent, 0.5%-3% of EP (extreme pressure) anti-wear reagent, 1%-4% of tackifier and 0.5%-2% of graphite. A one-step saponification method synthesis process is adopted. The dropping point of the lubricating grease is above 180 DEG C, the cone penetration is approximately 28mm, and the lubricating grease has excellent colloid stability, corrosion resistance and EP wear resistance, and is applicable to boundary lubrication of the railway locomotive wheel flange. The lubricating grease has excellent conventional physical and chemical properties and good ecological characteristics, enters a natural environment with the rotation of the wheel flange, and can be degraded into water and carbon dioxide naturally, thereby meeting environmental requirements.
Description
Technical field
The present invention relates to a kind of wheel rim of locomotive with degradable lubricating grease and preparation method, belong to chemical industry lubricant technical field.
Background technology
Along with the development of transportation by railroad, the requirement of train itself is further improved, especially aspect load-carrying and speed.And follow the raising of speed, also greatly aggravation of the increase of load-carrying, the wearing and tearing of train wheel rim meanwhile, also obviously increases the wearing and tearing of rail.The maintenance of wheel rim, change and to have caused huge waste, then larger to the waste of the replacing of rail.So lubricated at the contact surface of wheel rim of locomotive and rail and can be reduced frictional coefficient, reduced friction.And lubricating grease in lubricated owing to reasons such as permeate, reveal, overflow and deal with improperly, cause easily the pollution to soil, water and air, destruction ecotope and the eubiosis have become very important realistic problem.
The green lubrication agent research of " environmental friendliness ", " biodegradable " started from 20 century 70s abroad.Up to the present, the kind of external biodegradable lubricants and quantity all develop comparatively fast, mainly contain engine oil, hydraulic efficiency oil, lubricating oil and gear oil; Consumption also increases increasingly, and the shared market ratio of different biological degradability products is respectively hydraulic efficiency oil 22%, gear oil 1%, lubricating grease 4%, other kinds 8%.General main take vegetables oil, synthetic ester as base oil, take lithium soap, calcium soap, compound lithium soap, wilkinite as viscosifying agent, by adding the additive of various different purposes, but make the lubricating grease that adapts to various power lubrication needs.In China, the friendly lubricant of development environment is classified " 95 " brainstorm subject as, and domestic petrochemical industry is studied the research work that research institutions such as total institute, Lanzhou chemical physics institute of the Chinese Academy of Sciences etc. are carrying out environmental friendly lubricant.
US6429175 discloses a kind of grease composition, base oil wherein is vegetables oil, viscosifying agent is take wilkinite as main, it can also be lithium soap, selected anti-wear agent bismuth carboxylate salt is sebacic acid bismuth, 2 ethyl hexanoic acid bismuth, bismuth naphthenate or its mixture, can also add the additives such as calcium carbonate, tetrafluoroethylene.This lubricating grease has high extreme pressure property, good water resisting property and the feature of environmental protection.CN1120577 discloses a kind of special lubricating grease for automotive hydraulic brake leather cup, is by 12-oxystearic acid 10%, stearic acid 1%, and lithium hydroxide 4%, refined caster oil 85% and pentanoic are formulated.This preparation of greases process using be the Directly saponification method.US4115282 discloses a kind of composition of biodegradable Lubricating Grease, the water by 10%-95%, the plant viscosifying agents such as the amine that 0.2%-10% is soluble in water and basic metal, the plant of 1%-50% or animal tallow, oil or corresponding glyceryl ester, 0.05%-5% sodium, potassium, oleate, stearate, glycerol etc. are that emulsifying agent is formulated.WO03/018729A1 discloses the not virose biodegradable Lubricating Grease of tool, to be base oil by cotton seed oil, soya-bean oil, glyceride oil, palmolive oil, linseed oil wet goods, take lithium stearate, magnesium, calcium or zinc metal-salt as viscosifying agent, and antioxidant is formulated.
Summary of the invention
The purpose of this invention is to provide a kind of wheel rim of locomotive degradable lubricating grease and preparation method, the lubricating grease of the method preparation has the good characteristics of biological degradability.
For achieving the above object, the technical solution used in the present invention is: a kind of wheel rim of locomotive degradable lubricating grease, it is characterized in that it is prepared from by base oil, viscosifying agent, oxidation inhibitor, rust-preventive agent, extreme pressure anti-wear additives, tackifier and graphite, the shared weight percentage of each raw material (take the lubricating grease gross weight as benchmark) as:
Base oil 70%-86%; (manufacturer is: beach, Shanghai City chemical industry company limited)
Viscosifying agent 10%-20%;
Oxidation inhibitor 1%-5%; (manufacturer is: Chemical Reagent Co., Ltd., Sinopharm Group)
Rust-preventive agent 1%-3%; (manufacturer is: Nanjing thousand is chemical industry company limited more)
Extreme pressure anti-wear additives 0.5%-3%; (manufacturer is: the beautiful Chemical Industry Science Co., Ltd of Guangzhou platinum)
Tackifier 1%-4%; (manufacturer is: Guangzhou Jia Lin Chemical Industry Science Co., Ltd)
Graphite 0.5%-2%.(manufacturer is: Qingdao shines graphite company limited)
The shared weight percentage the best of each raw material is:
Base oil 81%;
Viscosifying agent 13%;
Oxidation inhibitor 1.5%;
Rust-preventive agent 2%;
Extreme pressure anti-wear additives 1%;
Tackifier 1%;
Graphite 0.5%.
Described base oil is ester class oil, or is that ester class oil is pressed the composite mixing oil of any proportioning with vegetables oil.Ester class oil is di-isooctyladinpate, and vegetables oil is epoxy soybean oil.
Said viscosifying agent is by C
16-C
20Organic acid, form C with calcium hydroxide aqueous solution or lithium hydroxide aqueous solution
16-C
20Organic acid and the preparation that is 2:1 or 1:1(viscosifying agent of the mol ratio of calcium hydroxide or lithium hydroxide be included in the step saponification method of lubricating grease preparation).Said C
16-C
20Organic acid is stearic acid or 12-oxystearic acid; The concentration of calcium hydroxide aqueous solution or lithium hydroxide aqueous solution is 10-20wt%.
Described oxidation inhibitor is amine antioxidants or phenolic antioxidant, perhaps is phenolic antioxidant and the mix oxidation inhibitor of amine antioxidants by any proportioning.Phenolic antioxidant is 2,6-toluene di-tert-butyl phenol, naphthyl alcohol or four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (also claiming antioxidant 1010) etc.; Amine antioxidants is pentanoic.
Described rust-preventive agent is organic acid metal salt rust-preventive agent, and organic acid metal salt rust-preventive agent is one or both in Lanolin Calcium Soap and the sulfonated petro-leum, and the weight ratio of lanolin metal-salt and sulfonated petro-leum is 1:1-1:1.2 when being two kinds.Sulfonated petro-leum is barium mahogany sulfonate.
Described extreme pressure anti-wear additives is dithio dialkyl amido salt.Be specially dibutyl dithiocaarbamate lead or dibutyl dithiocaarbamate molybdenum, perhaps and extreme pressure anti-wear additives dibutyl dithiocaarbamate molybdenum plumbous by the extreme pressure anti-wear additives dibutyl dithiocaarbamate mixes, and the plumbous weight part ratio that mixes with extreme pressure anti-wear additives dibutyl dithiocaarbamate molybdenum of described extreme pressure anti-wear additives dibutyl dithiocaarbamate is (1-1.5): (1-1.5).
Described tackifier are one or both in polyisobutene, the polymethacrylate, and the weight ratio of polyisobutene and polymethacrylate is 1:1-2:1 when being two kinds.
Described graphite (solid additive) specification is 1000 orders.
Above-mentioned a kind of wheel rim of locomotive is characterized in that with degradable preparation of greases method it comprises the steps:
1) choosing of raw material: by the shared weight percentage of each raw material be: base oil 70%-86%; Viscosifying agent 10%-20%; Oxidation inhibitor 1%-5%; Rust-preventive agent 1%-3%; Extreme pressure anti-wear additives 0.5%-3%; Tackifier 1%4%; Graphite 0.5%-2%; Choose base oil, viscosifying agent, oxidation inhibitor, rust-preventive agent, extreme pressure anti-wear additives, tackifier and graphite;
Said viscosifying agent is by C
16-C
20Organic acid, form C with calcium hydroxide aqueous solution or lithium hydroxide aqueous solution
16-C
20Organic acid and the mol ratio of calcium hydroxide or lithium hydroxide be 2:1 or 1:1;
2) with C
16-C
20Organic acid, rust-preventive agent, tackifier add (base oil that namely adds base oil gross weight 1/3) in 1/3 base oil, are warming up to 80-85 ℃ of dissolving; Add afterwards calcium hydroxide aqueous solution or lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction, the saponification reaction time is the generation that the effect in this step of 2.5h(is the viscosifying agent metallic soap); After finishing, saponification adds oxidation inhibitor and 1/3 base oil (base oil that namely adds base oil gross weight 1/3), be warming up to 145-200 ℃, the high temperature refining, the high temperature refining time is 5-10 minute, then add 1/3 base oil as quenching oil (base oil that namely adds base oil gross weight 1/3), and constantly stir; Be cooled to 80 ℃, add successively extreme pressure anti-wear additives and graphite, be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease.
Lubricating grease provided by the invention is applicable to the boundary lubrication of high-speed heavy loading locomotive wheel rim.
The existing good conventional physico-chemical properties of Biodegradable Lubricating Greases provided by the invention, the incomparable ecological characteristics of common lubricating grease is arranged again, even in use reveal in physical environment, can natural degradation be water and carbonic acid gas also as time goes by, for example, in 21 days, degradation rate can reach more than 80%, therefore do not pollute the environment and destroy the eubiosis, meet environmental requirement.
Embodiment
In order to understand better the present invention, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.The equalization of namely generally doing according to the present patent application claim changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Embodiment 1
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 83wt% as base oil, (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12-oxystearic acid and concentration to the viscosifying agent of 11wt%, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.5wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 2wt% (sulfonated petro-leum), the polyisobutene of 1wt%, the dibutyl dithiocaarbamate molybdenum of 1wt%, the graphite of 0.5wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 8085 ℃ of dissolvings; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 1.
Embodiment 2
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 84wt% as base oil, (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12 oxystearic acids and concentration to the viscosifying agent of 10wt%, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.5wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 2wt%, the polyisobutene of 1wt%, the dibutyl dithiocaarbamate molybdenum of 1wt%, the graphite of 0.5wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 1.
Embodiment 3
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 82wt% as base oil, (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12-oxystearic acid and concentration to the viscosifying agent of 12wt%, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.5wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 2wt%, the polyisobutene of 1wt%, the dibutyl dithiocaarbamate molybdenum of 1wt%, the graphite of 0.5wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 1.
Embodiment 4
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 81wt% as base oil, (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12 oxystearic acids and concentration to the viscosifying agent of 13wt%, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.5wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 2wt%, the polyisobutene of 1wt%, the dibutyl dithiocaarbamate molybdenum of 1wt%, the graphite of 0.5wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 1.
Embodiment 5
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 80wt% as base oil, the 12-oxystearic acid lithium soap of 14wt% is that (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12-oxystearic acid and concentration to viscosifying agent, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.5wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 2wt%, the polyisobutene of 1wt%, the dibutyl dithiocaarbamate molybdenum of 1wt%, the graphite of 0.5wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 1.
Embodiment 6
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 86wt% as base oil, (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12-oxystearic acid and concentration to the viscosifying agent of 10wt%, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.0wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 1wt% (sulfonated petro-leum), the polyisobutene of 1wt%, the dibutyl dithiocaarbamate molybdenum of 0.5wt%, the graphite of 0.5wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 2.
Embodiment 7
A kind of wheel rim of locomotive of present embodiment is with lithium soap grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 70wt% as base oil, (it is that the lithium hydroxide aqueous solution of 15wt% forms by 12-oxystearic acid and concentration to the viscosifying agent of 18wt%, and the mol ratio of 12-oxystearic acid and lithium hydroxide is 1:1; Saponification reaction makes 12-oxystearic acid lithium soap), add the four [β-(3 of 1.5wt%, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010), the barium mahogany sulfonate of 3wt% (sulfonated petro-leum), the polyisobutene of 4wt%, the dibutyl dithiocaarbamate molybdenum of 3wt%, the graphite of 2.0wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) 12-oxystearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; Add afterwards concentration and be 15% lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction; The saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 190-200 ℃, then high temperature (190-200 ℃) refining 5-10 minute adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to about 80 ℃, add successively extreme pressure additive and graphite (solid additive), be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease (required product).Its performance sees Table 2.
Embodiment 8
A kind of wheel rim of locomotive of present embodiment is with quicklime grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 70wt% and epoxy soybean oil as base oil (weight of di-isooctyladinpate and epoxy soybean oil respectively accounts for 1/2), (it is that the calcium hydroxide aqueous solution of 10wt% forms by stearic acid and concentration to the viscosifying agent of 20wt%, the mol ratio of stearic acid and calcium hydroxide is 2:1), add 2 of 5.0wt%, the 6-toluene di-tert-butyl phenol, the Lanolin Calcium Soap of 2wt%, the polyisobutene of 1wt%, the dibutyl dithiocaarbamate of 1.0wt% is plumbous, the graphite of 1.0wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) stearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80 ℃ of dissolvings; The calcium hydroxide aqueous solution that adds afterwards 10wt%; Be warming up to 100 ℃, carry out saponification reaction, the saponification reaction time is the generation that the effect in this step of 2.5h(is the viscosifying agent metallic soap); Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 145 ℃, high temperature (145 ℃) refining, the high temperature refining time is 5 minutes, then adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to 80 ℃, add successively extreme pressure anti-wear additives and graphite, be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease.
Embodiment 9
A kind of wheel rim of locomotive of present embodiment is with quicklime grease (being wheel rim of locomotive degradable lubricating grease), raw material by following weight percent is prepared from: take the di-isooctyladinpate of 72wt% and epoxy soybean oil as base oil (weight of di-isooctyladinpate and epoxy soybean oil respectively accounts for 1/2), (it is that the calcium hydroxide aqueous solution of 20wt% forms by stearic acid and concentration to the viscosifying agent of 20wt%, the mol ratio of stearic acid and calcium hydroxide is 2:1), add 2 of 3.0wt%, 6-toluene di-tert-butyl phenol and pentanoic (2, the weight of 6-toluene di-tert-butyl phenol and pentanoic respectively accounts for 1/2), the Lanolin Calcium Soap of 2wt% and barium mahogany sulfonate (weight ratio of Lanolin Calcium Soap and barium mahogany sulfonate is 1:1), the polyisobutene of 1wt% and polymethacrylate (weight of polyisobutene and polymethacrylate respectively accounts for 1/2), plumbous and the dibutyl dithiocaarbamate molybdenum (dibutyl dithiocaarbamate weight plumbous and the dibutyl dithiocaarbamate molybdenum respectively accounts for 1/2) of the dibutyl dithiocaarbamate of 1.0wt%, the graphite of 1.0wt%.
Above-mentioned a kind of wheel rim of locomotive is with degradable preparation of greases method, employing be a step saponification method, comprise the steps:
1) by the above-mentioned raw material of choosing;
2) stearic acid, rust-preventive agent, tackifier are added in 1/3 base oil, be warming up to 80-85 ℃ of dissolving; The calcium hydroxide aqueous solution that adds afterwards 20wt%; Be warming up to 110 ℃, carry out saponification reaction, the saponification reaction time is the generation that the effect in this step of 2.5h(is the viscosifying agent metallic soap); Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 150 ℃, high temperature (150 ℃) refining, the high temperature refining time is 10 minutes, then adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to 80 ℃, add successively extreme pressure anti-wear additives and graphite, be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease.
Following table has been listed prepared five kinds of this performance of grease base indexs and biological degradation rate.
Table 1 embodiment 1-5 performance summary sheet
Table 2 embodiment 6-9 performance summary sheet
The weighting method of biological degradability:
Present method is with reference to CEC L-33-A-90 method, supernatant liquid by selecting active sludge in the sewage work is as bacterial classification, in the mineral salt liquid nutrient medium of 100ml, add the bacterium liquid of 5ml and the lubricating grease of about 1g, in 25 ℃ of lower constant-temperature tables, cultivated 21 days, characterize the biological degradability of lubricating grease with the consumption of lubricating grease in biodegradation process.Wherein the mineral salt liquid nutrient medium forms:
Na
2HPO
4·3H
2O： 2.0g/L； KH
2PO
4： 0.6g/L；
MgSO
4·7H
2O： 0.1g/L； NH
4NO
3： 0.3g/L；
(NH
4)
2·SO
4： 0.4g/L； CaCl
2： 0.1g/L；
Trace element: trace; PH:7.0-7.2.
Claims (13)
1. a wheel rim of locomotive degradable lubricating grease is characterized in that it is prepared from by base oil, viscosifying agent, oxidation inhibitor, rust-preventive agent, extreme pressure anti-wear additives, tackifier and graphite, and the shared weight percentage of each raw material is:
Base oil 70%-86%;
Viscosifying agent 10%-20%;
Oxidation inhibitor 1%-5%;
Rust-preventive agent 1%-3%;
Extreme pressure anti-wear additives 0.5%-3%;
Tackifier 1%-4%;
Graphite 0.5%-2%.
2. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1, it is characterized in that: the shared weight percentage the best of each raw material is:
Base oil 81%;
Viscosifying agent 13%;
Oxidation inhibitor 1.5%;
Rust-preventive agent 2%;
Extreme pressure anti-wear additives 1%;
Tackifier 1%;
Graphite 0.5%.
3. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1 is characterized in that: described base oil is ester class oil, or be that ester class oil is pressed the composite mixing oil of any proportioning with vegetables oil.
4. a kind of wheel rim of locomotive degradable lubricating grease according to claim 3 is characterized in that: ester class oil is di-isooctyladinpate, and vegetables oil is epoxy soybean oil.
5. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1, it is characterized in that: said viscosifying agent is by C
16-C
20Organic acid, form C with calcium hydroxide aqueous solution or lithium hydroxide aqueous solution
16-C
20Organic acid and the mol ratio of calcium hydroxide or lithium hydroxide be 2:1 or 1:1.
6. a kind of wheel rim of locomotive degradable lubricating grease according to claim 5 is characterized in that: said C
16-C
20Organic acid is stearic acid or 12-oxystearic acid; The concentration of calcium hydroxide aqueous solution or lithium hydroxide aqueous solution is 10-20wt%.
7. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1, it is characterized in that: described oxidation inhibitor is amine antioxidants or phenolic antioxidant, perhaps is phenolic antioxidant and the mix oxidation inhibitor of amine antioxidants by any proportioning.
8. a kind of wheel rim of locomotive degradable lubricating grease according to claim 7, it is characterized in that: phenolic antioxidant is 2,6-toluene di-tert-butyl phenol, naphthyl alcohol or four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (also claiming antioxidant 1010); Amine antioxidants is pentanoic.
9. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1, it is characterized in that: described rust-preventive agent is organic acid metal salt rust-preventive agent, organic acid metal salt rust-preventive agent is one or both in Lanolin Calcium Soap and the sulfonated petro-leum, and the weight ratio of lanolin metal-salt and sulfonated petro-leum is 1:1-1:1.2 when being two kinds.
10. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1, it is characterized in that: described extreme pressure anti-wear additives is dithio dialkyl amido salt.
11. a kind of wheel rim of locomotive degradable lubricating grease according to claim 10, it is characterized in that: dithio dialkyl amido salt is dibutyl dithiocaarbamate lead or dibutyl dithiocaarbamate molybdenum, perhaps and dibutyl dithiocaarbamate molybdenum plumbous by dibutyl dithiocaarbamate mixes, and the plumbous weight part ratio that mixes with the dibutyl dithiocaarbamate molybdenum of described dibutyl dithiocaarbamate is (1-1.5): (1-1.5).
12. a kind of wheel rim of locomotive degradable lubricating grease according to claim 1, it is characterized in that: described tackifier are one or both in polyisobutene, the polymethacrylate, and the weight ratio of polyisobutene and polymethacrylate is 1:1-2:1 when being two kinds.
13. a kind of wheel rim of locomotive as claimed in claim 1 is characterized in that with degradable preparation of greases method it comprises the steps:
1) choosing of raw material: by the shared weight percentage of each raw material be: base oil 70%-86%; Viscosifying agent 10%-20%; Oxidation inhibitor 1%-5%; Rust-preventive agent 1%-3%; Extreme pressure anti-wear additives 0.5%-3%; Tackifier 1%-4%; Graphite 0.5%-2%; Choose base oil, viscosifying agent, oxidation inhibitor, rust-preventive agent, extreme pressure anti-wear additives, tackifier and graphite;
Said viscosifying agent is by C
16-C
20Organic acid, form C with calcium hydroxide aqueous solution or lithium hydroxide aqueous solution
16-C
20Organic acid and the mol ratio of calcium hydroxide or lithium hydroxide be 2:1 or 1:1;
2) with C
16-C
20Organic acid, rust-preventive agent, tackifier add in 1/3 base oil, are warming up to 80-85 ℃ of dissolving; Add afterwards calcium hydroxide aqueous solution or lithium hydroxide aqueous solution; Be warming up to 100-110 ℃, carry out saponification reaction, the saponification reaction time is 2.5h; Add oxidation inhibitor and 1/3 base oil after saponification finishes, be warming up to 145-200 ℃, the high temperature refining, the high temperature refining time is 5-10 minute, then adds 1/3 base oil as quenching oil, and constantly stirs; Be cooled to 80 ℃, add successively extreme pressure anti-wear additives and graphite, be cooled to grinding at room temperature, obtain wheel rim of locomotive degradable lubricating grease.
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| CN201210566339.9A CN103013627B (en) | 2012-12-24 | 2012-12-24 | Degradable lubricating grease for locomotive wheel flange and preparation method |
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| CN201210566339.9A CN103013627B (en) | 2012-12-24 | 2012-12-24 | Degradable lubricating grease for locomotive wheel flange and preparation method |
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| CN105695064A (en) * | 2016-03-27 | 2016-06-22 | 东北电力大学 | Dry-type solid lubricating block for rim of railway locomotive and making method of dry-type solid lubricating block |
| CN105907448A (en) * | 2016-04-29 | 2016-08-31 | 江苏龙蟠科技股份有限公司 | Lubricating grease for rims of locomotives and method for preparing lubricating grease |
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