CN111363606A - Diester-nucleus-based lubricating oil composition for diesel engine and preparation method thereof - Google Patents
Diester-nucleus-based lubricating oil composition for diesel engine and preparation method thereof Download PDFInfo
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- CN111363606A CN111363606A CN202010267582.5A CN202010267582A CN111363606A CN 111363606 A CN111363606 A CN 111363606A CN 202010267582 A CN202010267582 A CN 202010267582A CN 111363606 A CN111363606 A CN 111363606A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
- C10M2205/0225—Ethene used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/024—Propene
- C10M2205/0245—Propene used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/042—Sulfate esters
Abstract
The invention relates to the technical field of lubricating oil, in particular to a lubricating oil composition for a diesel engine based on diester nucleus and a preparation method thereof, wherein the lubricating oil composition comprises the following components in percentage by weight: 250N to 70 percent of base oil, 500N to 20 percent of base oil, 2 to 3 percent of OCP, 12 to 20 percent of additive and 0.1 to 0.5 percent of pour point depressant, wherein the OCP is a composition of 100N base oil and ethylene propylene rubber with the mass ratio of 1 (0.20 to 0.25). The invention solves the problem of high-temperature oxidation of the existing lubricating oil composition for the diesel engine based on the diester nucleus, improves the high-temperature oxidation resistance by matching the base oil with the related additives, improves the lubricating performance of the lubricating oil composition by increasing the strength of an oil film, has good wear resistance, can reduce oil sludge and carbon deposit, effectively reduces the wear degree of the engine, and simultaneously can effectively reduce the exhaust emission.
Description
Technical Field
The invention relates to the technical field of lubricating oil, in particular to a lubricating oil composition for a diesel engine based on diester nucleus and a preparation method thereof.
Background
The diesel engine is used as a commercial vehicle and an engine configured for an engineering machinery vehicle, and is continuously updated in recent years, at present, the diesel engine widely uses a direct injection technology and a turbocharging technology to improve power, and adopts a delayed injection technology, an exhaust gas recirculation technology, piston optimization and the like to reduce engine emission. The application of the technologies puts higher requirements on dispersion, oxidation resistance, abrasion resistance and the like of diesel engine oil matched with the diesel engine.
As is well known, the internal temperature of an engine is high, and oxidation of lubricating oil inevitably occurs during use. For engines, the oxidation process produces acids, sludge, and deposits. Wherein, the acid causes corrosion and abrasion of metal parts; the oil sludge and the sediments thicken the lubricating oil, and cause the adhesion of piston rings and the blockage of oil passages, thereby reducing the power of the engine and increasing the oil consumption.
Therefore, the problem of high-temperature oxidation of engine lubricating oil is always a difficult problem in the heart of lubricating oil developers.
Based on this, in the chinese patent application no: 201711156093.7 (application date: 2017.11.20) discloses a lubricating oil for diesel engines, which is prepared from the following raw materials in parts by weight: 60-80 parts of base oil, 3-5 parts of sulfonate detergent, 5-7 parts of dispersant, 4-10 parts of antioxidant, 1-5 parts of antifoaming agent, 2-12 parts of oil-soluble polyether, 2-6 parts of tricresyl phosphate and 0.2-0.8 part of friction modifier. The antioxidant property of the lubricating oil is improved by mixing oil solubility and oil solubility additives. The technology is suitable for the use environment of a common diesel engine, and has poor oxidation resistance for a heavy-duty diesel engine.
In view of the problems of the prior art, the applicant has proposed, through a great deal of experiments and research, a lubricating oil composition for diesel engines based on diester core technology (diester core technology refers to a technology in which two base oils are mixed), which has good high-temperature oxidation resistance and which achieves a reduction in the degree of engine wear by reducing the friction system.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a lubricating oil composition for a diesel engine based on a diester nucleus and a preparation method thereof, solves the problem of high-temperature oxidation of the lubricating oil composition for the diesel engine based on the diester nucleus, improves the high-temperature oxidation resistance by matching base oil with related additives, improves the lubricating property of the lubricating oil composition by increasing the strength of an oil film, has good wear resistance, can reduce oil sludge and carbon deposit, and effectively reduces the wear degree of an engine.
In order to achieve the purpose of the invention, the invention provides the following technical scheme:
a lubricating oil composition for diesel engines based on diester nuclei comprises the following components in percentage by weight:
as a preferable scheme of the invention, the lubricating oil composition for the diesel engine based on the diester nucleus comprises the following components in percentage by weight:
in a preferred embodiment of the present invention, the OCP is a composition of 100N base oil and ethylene-propylene rubber in a mass ratio of 1 (0.20-0.25).
As a preferred embodiment of the present invention, the preparation method of the OCP comprises: firstly putting 100N of base oil into a blending tank according to a certain weight, heating the temperature of the blending tank to 90-100 ℃, then putting ethylene propylene rubber into the blending tank according to a certain weight, heating the temperature of the blending tank to 110 ℃, stopping heating, starting stirring for 3h, then heating the temperature of the blending tank to 130 ℃, stopping heating, and continuing stirring for 3h to obtain the OCP.
As a preferred embodiment of the present invention, the additive is an additive 12210.
As a preferable scheme of the invention, the pour point depressant is 1-248.
Another object of the present invention is to provide a method for preparing the above lubricating oil composition for diesel engines based on diester nuclei, comprising the steps of:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and uniformly stirring;
(2) weighing the additives according to the weight ratio, putting the additives into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing OCP according to the weight ratio, heating the OCP to 100 ℃, and putting the OCP into a blending tank;
(4) weighing pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 55-60 ℃, and stirring for 1.8-2.2h at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
As a preferable embodiment of the present invention, the stirring condition in the step (1) is: the stirring speed is 150-.
Compared with the prior art, the invention has the following beneficial effects:
the lubricating oil composition solves the problem of high-temperature oxidation of the existing lubricating oil composition for the diesel engine based on the diester nucleus, improves the high-temperature oxidation resistance by matching the base oil with the related additives, improves the lubricating performance of the lubricating oil composition by increasing the strength of an oil film, has good wear resistance, can reduce oil sludge and carbon deposit, effectively reduces the wear degree of the engine, and simultaneously can effectively reduce the exhaust emission;
the base oil 250N is matched with the base oil 500N for use, so that the heat stability and the oxidation stability of the lubricating oil composition can be improved, the preparation of lubricating oil with a wider range of viscosity can be realized, and the lubricating oil composition prepared by matching the lubricating oil composition with the additive 12210 for the heavy-duty diesel engine has better oxidation resistance and corrosion resistance;
the lubricating oil composition is added with OCP, namely a mixture of the base oil 100N and the ethylene propylene rubber, and the OCP and the ethylene propylene rubber are cooperatively matched, so that the effect of reducing friction and wear can be effectively achieved, the ethylene propylene rubber has better elasticity, the friction among friction pairs of an engine can be effectively reduced, the wear degree of the engine can be effectively reduced, the addition of the ethylene propylene rubber can ensure the oxidation stability of an oil product, and meanwhile, the addition of the OCP can ensure the viscosity of the lubricating oil and protect the shear value of the oil product under the high-temperature condition;
according to the invention, the base oil 250N, the base oil 500 and the OCP are matched, so that the corrosion resistance of an oil product and the low consumption of engine oil can be ensured, and the exhaust emission is ensured to meet the standard;
the invention aims to ensure that each functional additive not only fully exerts the performance advantages of the functional additive, but also ensures that each functional additive component generates better 'synergistic effect' as much as possible, thereby ensuring that each performance of the composition reaches the best.
Detailed Description
The foregoing aspects of the present invention are described in further detail below by way of examples, but it should not be construed that the scope of the subject matter of the present invention is limited to the following examples, and that all the technologies that can be realized based on the above aspects of the present invention are within the scope of the present invention.
Example 1
The lubricating oil composition for diesel engine based on diester nucleus of the embodiment comprises the following components by weight percent:
the preparation method of the lubricating oil composition for diesel engine based on diester nucleus of the embodiment is as follows:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and stirring for 35min at a stirring speed of 180 rpm;
(2) weighing the additive 12210 according to the weight ratio, putting the additive into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing 100N of base oil and ethylene propylene rubber according to the weight ratio, heating to 100 ℃, and putting into a blending tank;
(4) weighing 1-248 parts of pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 56 ℃, and stirring for 2 hours at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
The preparation method of the OCP comprises the following steps: firstly putting 100N of base oil into a blending tank according to a certain weight, heating the temperature of the blending tank to 90 ℃, then putting ethylene propylene rubber into the blending tank according to a certain weight, heating the temperature of the blending tank to 110 ℃, stopping heating, starting stirring for 3h, then heating the temperature of the blending tank to 130 ℃, stopping heating, and continuing stirring for 3h to obtain the OCP.
Example 2
The lubricating oil composition for diesel engine based on diester nucleus of the embodiment comprises the following components by weight percent:
the preparation method of the lubricating oil composition for diesel engine based on diester nucleus of the embodiment is as follows:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and stirring for 35min at a stirring speed of 180 rpm;
(2) weighing the additive 12210 according to the weight ratio, putting the additive into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing 100N of base oil and ethylene propylene rubber according to the weight ratio, heating to 100 ℃, and putting into a blending tank;
(4) weighing 1-248 parts of pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 58 ℃, and stirring for 1.8 hours at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
The preparation method of the OCP comprises the following steps: firstly putting 100N of base oil into a blending tank according to the weight ratio, heating the temperature of the blending tank to 100 ℃, then putting ethylene propylene rubber into the blending tank according to the weight ratio, heating the temperature of the blending tank to 110 ℃, stopping heating, starting stirring for 3 hours, then heating the temperature of the blending tank to 130 ℃, stopping heating, and continuing stirring for 3 hours to obtain the OCP.
Example 3
The lubricating oil composition for diesel engine based on diester nucleus of the embodiment comprises the following components by weight percent:
the preparation method of the lubricating oil composition for diesel engine based on diester nucleus of the embodiment is as follows:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and stirring for 35min at a stirring speed of 180 rpm;
(2) weighing the additive 12210 according to the weight ratio, putting the additive into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing 100N of base oil and ethylene propylene rubber according to the weight ratio, heating to 100 ℃, and putting into a blending tank;
(4) weighing 1-248 parts of pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 55 ℃, and stirring for 2.2 hours at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
The preparation method of the OCP comprises the following steps: firstly putting 100N of base oil into a blending tank according to a certain weight, heating the blending tank to 95 ℃, then putting ethylene propylene rubber into the blending tank according to a certain weight, heating the blending tank to 110 ℃, stopping heating, starting stirring for 3h, then heating the blending tank to 130 ℃, stopping heating, and continuing stirring for 3h to obtain the OCP.
Example 4
The lubricating oil composition for diesel engine based on diester nucleus of the embodiment comprises the following components by weight percent:
the preparation method of the lubricating oil composition for diesel engine based on diester nucleus of the embodiment is as follows:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and stirring for 35min at a stirring speed of 180 rpm;
(2) weighing the additive 12210 according to the weight ratio, putting the additive into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing 100N of base oil and ethylene propylene rubber according to the weight ratio, heating to 100 ℃, and putting into a blending tank;
(4) weighing 1-248 parts of pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 57 ℃, and stirring for 2.1 hours at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
The preparation method of the OCP comprises the following steps: firstly putting 100N of base oil into a blending tank according to a certain weight, heating the blending tank to 93 ℃, then putting ethylene propylene rubber into the blending tank according to a certain weight, heating the blending tank to 110 ℃, stopping heating, starting stirring for 3h, then heating the blending tank to 130 ℃, stopping heating, and continuing stirring for 3h to obtain the OCP.
Example 5
The lubricating oil composition for diesel engine based on diester nucleus of the embodiment comprises the following components by weight percent:
the preparation method of the lubricating oil composition for diesel engine based on diester nucleus of the embodiment is as follows:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and stirring for 35min at a stirring speed of 180 rpm;
(2) weighing the additive 12210 according to the weight ratio, putting the additive into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing 100N of base oil and ethylene propylene rubber according to the weight ratio, heating to 100 ℃, and putting into a blending tank;
(4) weighing 1-248 parts of pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 60 ℃, and stirring for 1.8 hours at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
The preparation method of the OCP comprises the following steps: firstly putting 100N of base oil into a blending tank according to a certain weight, heating the blending tank to 98 ℃, then putting ethylene propylene rubber into the blending tank according to a certain weight, heating the blending tank to 110 ℃, stopping heating, starting stirring for 3h, then heating the blending tank to 130 ℃, stopping heating, and continuing stirring for 3h to obtain the OCP.
Comparative example 1
A lubricating oil for diesel engines, having the name of 201711156093.7, was selected as a comparative example.
Comparative example 2
A commercial eni super aggressive 15W-40 engine oil was chosen as a comparative example.
Experimental example 1
The lubricating oils obtained in examples 1 to 5 and comparative examples 1 to 2 were subjected to kinematic viscosity, ash value and pour point tests, with specific reference to the following criteria:
kinematic viscosity: GB/T265-1988 petroleum products kinematic viscometry and kinetic viscometry;
ash value: GB/T2433-2001 lubricating oil sulfated ash assay;
pour point: GB/T3535-2006 Petroleum products pour point determination.
Table 1 performance test results for lubricating oils:
as can be seen from Table 1, the kinematic viscosity, the ash value and the pour point of the lubricating oil prepared in the examples 1 to 5 of the present invention are superior to those of the comparative examples 1 and 2, wherein the kinematic viscosity is at the upper limit of the standard, which ensures the thickness of the oil film of the lubricating oil in a high temperature working state, thereby achieving a better lubricating effect, while the ash value at the lower limit of the standard ensures that the lubricating oil of the present invention burns sufficiently, reduces the generation of deposits and carbon deposits, and plays a good role in protecting the wear of engine accessories, while the pour point is much higher than the temperature required by the standard, thereby ensuring that the vehicle can start smoothly even in a cold working condition.
Experimental example 2
The PB-maximum no-seizure load, and the PD-sintering load were determined by a lubricant load capacity determination method (four-ball method) -GB/T-3142. The wear resistance performance measuring method (long grinding) SH/T-0189 of the lubricant is adopted to measure the size of the grinding spot, the friction coefficient and the self-repairing performance.
The results of the anti-wear extreme pressure tests of the lubricating oils of examples 1 to 5 and comparative examples 1 to 2 are shown in Table 2.
TABLE 2 lubricating oil antiwear extreme pressure test results
As can be seen from Table 2, the lubricating oils obtained in examples 1 to 5 of the present invention have the maximum seizure load (PB) and the maximum sintering load (PD) superior to those of comparative examples 1 to 2, indicating that the lubricating oils obtained in the present invention have the better anti-wear properties.
In summary, the main innovation points of the lubricating oil composition for diesel engine based on diester nucleus of the invention are as follows:
1. the lubricating oil composition solves the problem of high-temperature oxidation of the existing lubricating oil composition for the diesel engine based on the diester nucleus, improves the high-temperature oxidation resistance by matching the base oil with the related additives, improves the lubricating performance of the lubricating oil composition by increasing the strength of an oil film, has good wear resistance, can reduce oil sludge and carbon deposit, effectively reduces the wear degree of the engine, and simultaneously can effectively reduce the exhaust emission;
2. the base oil 250N is matched with the base oil 500N for use, so that the heat stability and the oxidation stability of the lubricating oil composition can be improved, the preparation of lubricating oil with a wider range of viscosity can be realized, and the lubricating oil composition prepared by matching the lubricating oil composition with the additive 12210 for the heavy-duty diesel engine has better oxidation resistance and corrosion resistance;
3. the lubricating oil composition is added with OCP (oil soluble phosphate), namely a mixture of the base oil 100N and the ethylene propylene rubber, and the OCP and the mixture are cooperatively matched, so that the effect of reducing friction and wear can be effectively achieved, and the ethylene propylene rubber has better elasticity, so that the friction among friction pairs of an engine can be effectively reduced, and the wear degree of the engine can be effectively reduced;
4. the invention aims to ensure that each functional additive not only fully exerts the performance advantages of the functional additive, but also ensures that each functional additive component generates better 'synergistic effect' as much as possible, thereby ensuring that each performance of the composition reaches the best. .
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. The lubricating oil composition for the diesel engine based on the diester nucleus is characterized by comprising the following components in percentage by weight:
2. the lubricating oil composition for diesel engines based on diester nuclei of claim 1, comprising the following components in weight percent:
3. the lubricating oil composition for diesel engines based on diester nuclei as claimed in claim 1, wherein the OCP is a composition of 100N base oil and ethylene-propylene rubber in a mass ratio of 1 (0.20-0.25).
4. The diester core-based lubricating oil composition for diesel engines according to claim 3, wherein said OCP is prepared by a process comprising: firstly putting 100N of base oil into a blending tank according to a certain weight, heating the temperature of the blending tank to 90-100 ℃, then putting ethylene propylene rubber into the blending tank according to a certain weight, heating the temperature of the blending tank to 110 ℃, stopping heating, starting stirring for 3h, then heating the temperature of the blending tank to 130 ℃, stopping heating, and continuing stirring for 3h to obtain the OCP.
5. The diester core based lubricating oil composition for diesel engines according to claim 1 wherein the additive is additive 12210.
6. The diester nucleus based lubricating oil composition for diesel engines according to claim 1, wherein the pour point depressant is pour point depressant 1 to 248.
7. Process for the preparation of a lubricating oil composition for diesel engines based on diester nuclei according to any one of claims 1 to 6, characterized in that it comprises the following steps:
(1) respectively weighing 250N of base oil and 500N of base oil according to the weight ratio, putting into a blending tank, and uniformly stirring;
(2) weighing the additives according to the weight ratio, putting the additives into a blending tank, and heating the temperature of the blending tank to 45 ℃;
(3) weighing OCP according to the weight ratio, heating the OCP to 100 ℃, and putting the OCP into a blending tank;
(4) weighing pour point depressant according to the weight ratio, putting the pour point depressant into a blending tank, heating the blending tank to 55-60 ℃, and stirring for 1.8-2.2h at the temperature;
(5) and after stirring is finished, sampling and inspecting, and putting the qualified mixture into a finished product tank through a filtering system to obtain the diester core-based lubricating oil composition for the diesel engine.
8. The method for preparing a lubricating oil composition for a diesel engine based on a diester nucleus according to claim 7, wherein the stirring-homogenizing condition in the step (1): the stirring speed is 150-.
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Application publication date: 20200703 |