[go: up one dir, main page]

CN115058274B - Lubricating oil composition for methanol fuel engine and preparation method thereof - Google Patents

Lubricating oil composition for methanol fuel engine and preparation method thereof Download PDF

Info

Publication number
CN115058274B
CN115058274B CN202210621963.8A CN202210621963A CN115058274B CN 115058274 B CN115058274 B CN 115058274B CN 202210621963 A CN202210621963 A CN 202210621963A CN 115058274 B CN115058274 B CN 115058274B
Authority
CN
China
Prior art keywords
base oil
emulsifier
antioxidant
lubricating oil
viscosity index
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210621963.8A
Other languages
Chinese (zh)
Other versions
CN115058274A (en
Inventor
鄂红军
杜雪岭
阿合波塔·巴合提
雷凌
金佳佳
吴思
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Original Assignee
China Petroleum and Chemical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp filed Critical China Petroleum and Chemical Corp
Priority to CN202210621963.8A priority Critical patent/CN115058274B/en
Publication of CN115058274A publication Critical patent/CN115058274A/en
Application granted granted Critical
Publication of CN115058274B publication Critical patent/CN115058274B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/287—Partial esters
    • C10M2207/289—Partial esters containing free hydroxy groups
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/084—Acrylate; Methacrylate
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/24—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions having hydrocarbon substituents containing thirty or more carbon atoms, e.g. nitrogen derivatives of substituted succinic acid
    • C10M2215/28—Amides; Imides
    • 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
    • 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
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • 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
    • C10M2219/046—Overbased sulfonic acid salts
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • 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
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04—Detergent property or dispersant property
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/25—Internal-combustion engines
    • C10N2040/251—Alcohol-fuelled engines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The present disclosure relates to a lubricating oil composition for a methanol-fueled engine, the lubricating oil composition containing an additive and a balance of a base oil; the base oil contains API I base oil and ester base oil; the aromatic hydrocarbon content of the API I base oil is 1-5 wt%; the additive contains a viscosity index improver and an emulsifier; the viscosity index improver is an ester viscosity index improver. The disclosure also discloses a method of making the lubricating oil composition. The lubricating oil composition for methanol fuel engines provided by the present disclosure significantly improves the emulsifying properties, anti-wear properties, and anti-corrosion properties of the lubricating oil.

Description

Lubricating oil composition for methanol fuel engine and preparation method thereof
Technical Field
The present disclosure relates to a lubricating oil, and in particular, to a lubricating oil composition for a methanol fuel engine and a method of preparing the same.
Background
At present, the aim of improving the quality of the ambient air is mainly achieved by developing measures of using clean energy, using alternative fuels and the like, wherein alcohol fuels are the most commonly used alternative fuels. According to current research and application, most engines can use low-proportion methanol gasoline (< 15%) without or with minor adjustments, but for high-proportion methanol-fueled engines (using methanol fuel above 30%), improvements in engine components are needed, while lubricating oils need to have good corrosion protection, wear resistance, and emulsifying properties.
The corrosion protection, wear resistance and emulsification properties of the lubricating oils currently used in methanol-fueled engines remain low.
Disclosure of Invention
The purpose of the present disclosure is to provide a lubricating oil composition for a methanol fuel engine and a preparation method thereof, so as to solve the technical problems of insufficient corrosion resistance, abrasion resistance and emulsifying performance of the lubricating oil for the methanol fuel engine in the prior art.
In a first aspect of the present disclosure, there is provided a lubricating oil composition for a methanol-fueled engine, the lubricating oil composition comprising an additive and a balance of a base oil; the base oil contains API I base oil and ester base oil; the aromatic hydrocarbon content of the base oil is 1-5 wt%; the additive contains a viscosity index improver and an emulsifier; the viscosity index improver is an ester viscosity index improver.
Optionally, the base oil comprises an API group III base oil; the weight ratio of the API group I base oil, the ester base oil and the API group III base oil is 10-20.
Optionally, the emulsifier comprises an anionic emulsifier and/or a nonionic emulsifier; preferably, the emulsifier comprises the anionic emulsifier and the nonionic emulsifier; the weight ratio of the anionic emulsifier to the nonionic emulsifier is 0.5 to 5, preferably 2.
Optionally, the additive contains a friction reducer comprising zinc and/or molybdenum butyl octyl dialkyl dithiophosphate; preferably, the friction reducer comprises zinc and molybdenum butyl octyl dialkyl dithiophosphates; the weight ratio of the zinc butyl octyl dialkyl dithiophosphate to the molybdenum dialkyl dithiophosphate is 0.7-1.
Optionally, the additive comprises an antioxidant comprising a phenolic antioxidant and/or an ammonia antioxidant; preferably, the antioxidant comprises the phenolic antioxidant and the ammonia antioxidant, and the weight ratio of the phenolic antioxidant to the ammonia antioxidant is 1.7-2.2.
Optionally, the additive contains a detergent that is at least one of calcium sulfonate, calcium sulfurized alkylphenol, calcium alkyl salicylate, and magnesium alkyl salicylate; preferably, the detergent comprises calcium sulphonate.
Optionally, the additive contains a dispersant which is at least two of polyisobutylene succinimide ashless dispersant, boronized bis-polyisobutylene succinimide dispersant and mono-alkenyl polyisobutylene succinimide ashless dispersant; preferably, the dispersant comprises a polyisobutylene succinimide ashless dispersant and a boronated bis-polyisobutylene succinimide dispersant; the weight ratio of the polyisobutylene succinimide ashless dispersant to the boronized bis-polyisobutylene succinimide dispersant is 1.5-2.5.
Optionally, the additive comprises a detergent, a dispersant, an antioxidant, a friction reducer, a pour point depressant; based on the total weight of the lubricating oil composition, the content of the detergent is 2-5 wt%, the content of the dispersant is 2-5 wt%, the content of the antioxidant is 0.5-2.1 wt%, the content of the antifriction agent is 0.01-10 wt%, the content of the pour point depressant is 0.1-0.5 wt%, the content of the viscosity index improver is 0.1-50 wt%, and the content of the emulsifier is 0.05-3 wt%.
Optionally, the composition comprises 2.5 to 4.5 wt.% of a detergent, 0.8 to 2.2 wt.% of a polyisobutylene succinimide ashless dispersant, 0.6 to 2 wt.% of a borated bis-polyisobutylene succinimide dispersant, 0.7 to 1 wt.% of zinc butyloctyl dialkyldithiophosphate, 0.4 to 0.8 wt.% of molybdenum dialkyldithiophosphate, 1.4 to 2.1 wt.% of an antioxidant, 0.15 to 0.35 wt.% of a fumarate pour point depressant, 7 to 11 wt.% of a polymethacrylate viscosity index improver, 0.14 to 0.19 wt.% of an emulsifier, and the balance base oil, based on the total weight of the lubricating oil composition;
the antioxidant contains a phenolic antioxidant and an ammonia antioxidant, and the weight ratio of the phenolic antioxidant to the ammonia antioxidant is 0.45-0.75;
the emulsifier contains an anionic emulsifier and a nonionic emulsifier, and the weight ratio of the anionic emulsifier to the nonionic emulsifier is 0.09-0.13;
the weight ratio of the API group I base oil, the ester base oil and the API group III base oil is 10-18.
In a second aspect of the present disclosure, there is provided a method of preparing a lubricating oil composition of the first aspect, the method comprising the steps of: carrying out first mixing on the base oil and the viscosity index improver, and then adding the emulsifier for second mixing;
preferably, the temperature of the first mixing is 40-55 ℃, and the time is 30-60 min; the temperature of the second mixing is 55-62 ℃, and the time is 30-60 min.
According to the scheme disclosed by the invention, the API I base oil and the ester base oil are used, the aromatic hydrocarbon content in the base oil is controlled, and the emulsifier is used, so that the corrosion resistance, wear resistance and emulsifying performance of the lubricating oil can be obviously improved.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic illustration of the emulsification of composition 1, composition 2 and a common commercially available product SN 5W-30.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
A first aspect of the present disclosure provides a lubricating oil composition for a methanol-fueled engine, the lubricating oil composition containing an additive and a balance of a base oil;
the base oil contains API I base oil and ester base oil; the aromatic hydrocarbon content of the base oil is 1-5 wt%; the additive contains a viscosity index improver and an emulsifier; the viscosity index improver is an ester viscosity index improver.
The methanol fuel reacts with oxygen in the combustion process to generate carbon dioxide and a large amount of water, and when a water layer exists on the surface of the engine, abnormal abrasion can be caused, so that cylinder scuffing and tile holding are caused, a water-in-oil emulsified state needs to be formed, and the water layer is prevented from directly contacting the surface of the engine.
The water molecules are polar molecules, in order to form a water-in-oil emulsified state, the I-type base oil and the ester base oil with high aromatic hydrocarbon content are selected, the ester viscosity index improver with high polarity is selected, and in order to promote interaction of water with the I-type base oil and the ester viscosity index improver and promote emulsification, the lubricating oil composition disclosed by the invention contains a certain emulsifier.
According to the lubricating oil, the API I base oil, the ester base oil and the ester viscosity index improver are interacted with water under the action of the emulsifier to form a water-in-oil emulsified state, so that the emulsifying property of the lubricating oil is improved, the direct contact of a water layer and the surface of an engine is avoided, and the abrasion resistance and the corrosion resistance of the lubricating oil are improved.
When a methanol engine is used, methanol is easy to leak into lubricating oil from a crankcase when incompletely combusted, the methanol has strong solubility, and the lubricating oil on the cylinder wall is easy to clean, so that a lubricating oil film on a friction surface is diluted or seriously aged, the lubricating function is lost, and the abrasion is increased. Meanwhile, after absorbing water, methanol is easy to react with the antioxidant antiwear agent in the lubricating oil, so that the corrosion resistance and the abrasion resistance of the lubricating oil are weakened.
When the lubricating oil is used for a long time and contains methanol, the methanol and the water can be emulsified by using the lubricating oil composition disclosed by the invention, and the lubricating oil has better corrosion resistance and abrasion resistance.
Preferably, the ester viscosity index improver is a methacrylate viscosity index improver.
Preferably, the base oil comprises an API group III base oil; the weight ratio of the API group I base oil, the ester base oil and the API group III base oil is 10-20. By controlling the content of the API I base oil and the ester base oil, the corrosion resistance and the abrasion resistance of the lubricating oil can be further improved by promoting emulsification.
Group I base oils include, but are not limited to, ia500, ib150, IC 500, AP/E150, AP/E600; group III basestocks include, but are not limited to, HVI III4, HVI III6, S4, S6, S8, yu4, yu6; ester base oils include, but are not limited to, pentaerythritol ester, sebacic acid ester, azelaic acid ester under the designation 3970.
Preferably, the viscosity index of the base oil is 120 to 140.
Preferably, the emulsifier comprises an anionic emulsifier and/or a nonionic emulsifier; preferably, the emulsifier comprises the anionic emulsifier and the nonionic emulsifier; the weight ratio of the anionic emulsifier to the nonionic emulsifier is 0.5 to 5, preferably 2. The lubricating oil is usually alkalescent, the use of the anionic emulsifier and the nonionic emulsifier is beneficial to improving the emulsifying property and the emulsifying stability, and the lubricating oil can have positive influence on the anti-wear property after being emulsified.
Preferably, the additive comprises a friction reducer comprising zinc and/or molybdenum dioctyldithiophosphates; preferably, the friction reducer comprises zinc and molybdenum butyl octyl dialkyl dithiophosphates; the weight ratio of the zinc butyl octyl dialkyl dithiophosphate to the molybdenum dialkyl dithiophosphate is 0.7-1.
Preferably, the additive contains an antioxidant, and the antioxidant contains a phenolic antioxidant and/or an ammonia antioxidant; preferably, the antioxidant comprises the phenolic antioxidant and the ammonia antioxidant, and the weight ratio of the phenolic antioxidant to the ammonia antioxidant is 1.7-2.2.
Preferably, the additive contains a detergent which is at least one of calcium sulfonate, calcium sulfurized alkylphenol, calcium alkyl salicylate and magnesium alkyl salicylate; preferably, the detergent comprises calcium sulphonate.
Preferably, the additive contains a dispersant which is at least two of polyisobutylene succinimide ashless dispersant, boronized bis-polyisobutylene succinimide dispersant and mono-alkenyl polyisobutylene succinimide ashless dispersant; preferably, the dispersant comprises a polyisobutylene succinimide ashless dispersant and a boronated bis-polyisobutylene succinimide dispersant; the weight ratio of the polyisobutylene succinimide ashless dispersant to the boronized bis-polyisobutylene succinimide dispersant is 1.5-2.5.
Preferably, the additive contains a detergent, a dispersant, an antioxidant, a friction reducer, and a pour point depressant;
based on the total weight of the lubricating oil composition, the content of the detergent is 2-5 wt%, the content of the dispersant is 2-5 wt%, the content of the antioxidant is 0.5-2.1 wt%, the content of the antifriction agent is 0.01-10 wt%, the content of the pour point depressant is 0.1-0.5 wt%, the content of the viscosity index improver is 0.1-50 wt%, and the content of the emulsifier is 0.05-3 wt%.
Preferably, the pour point depressant is at least one of polymethacrylate, polyalpha-olefin and fumarate.
Besides the cleaning function, the detergent disclosed by the invention has a certain influence on the emulsifying property of an oil product, and when the content of the detergent is more than 5wt%, the abrasion resistance and the corrosion resistance of the lubricating oil are weakened. The dispersant is mainly used for dispersing, and when the content of the dispersant is more than 5%, the antiwear performance of the lubricating oil is weakened.
Preferably, the composition comprises, based on the total weight of the lubricating oil composition, 2.5 to 4.5 wt.% of a detergent, 0.8 to 2.2 wt.% of a polyisobutylene succinimide ashless dispersant, 0.6 to 2 wt.% of a borated bis-polyisobutylene succinimide dispersant, 0.7 to 1 wt.% of zinc butyloctyl dialkyldithiophosphate, 0.4 to 0.8 wt.% of molybdenum dialkyldithiophosphate, 1.4 to 2.1 wt.% of an antioxidant, 0.15 to 0.35 wt.% of a fumarate pour point depressant, 7 to 11 wt.% of a polymethacrylate viscosity index improver, 0.14 to 0.19 wt.% of an emulsifier, and the balance a base oil;
the antioxidant contains a phenolic antioxidant and an ammonia antioxidant, and the weight ratio of the phenolic antioxidant to the ammonia antioxidant is 0.45-0.75;
the emulsifier contains an anionic emulsifier and a nonionic emulsifier, and the weight ratio of the anionic emulsifier to the nonionic emulsifier is 0.09-0.13;
the weight ratio of the API group I base oil, the ester base oil and the API group III base oil is 10-18.
In a second aspect of the present disclosure, there is provided a method of preparing a lubricating oil composition of the first aspect, the method comprising the steps of: carrying out first mixing on the base oil and the viscosity index improver, and then adding the emulsifier for second mixing;
preferably, the temperature of the first mixing is 40-55 ℃, and the time is 30-60 min; the temperature of the second mixing is 55-62 ℃, and the time is 30-60 min. By using the method disclosed by the invention to prepare the lubricating oil, the dispersion of the viscosity index improver and the like in the base oil can be promoted, and the generation of precipitates can be avoided.
Preferably, the base oil, the viscosity index improver and the pour point depressant are first mixed, and then the dispersant, the detergent, the friction reducer, the antioxidant and the emulsifier are added for second mixing.
The present disclosure is further illustrated by the following examples. The raw materials used in the examples are all available from commercial sources.
Example 1
Composition 1 contained 3.0g of detergent (1.8 g of high and 1.2g of medium calcium sulphonate), 2.0g of ashless polyisobutylene succinimide dispersant, 0.8g of boronated bis-polyisobutylene succinimide dispersant, 0.75g of zinc butyl octyl dialkyl dithiophosphate, 0.7g of molybdenum dialkyl dithiophosphate, 0.5g of phenolic antioxidant (L135, basf), 1g of ammonia antioxidant (L67, basf), 0.3g of fumarate pour point depressant, 0.1g of anionic emulsifier (sodium lauryl sulphate), 0.05g of nonionic emulsifier (Span 80), 8g of polymethacrylate viscosity index improver, 15g of group I base oil (150 Ib), 10g of ester base oil (3970) and 64.8g of group III base oil (S8), based on the total weight of lubricating oil composition 1.
First mixing the 0.3g of fumarate pour point depressant, 8g of polymethacrylate viscosity index improver, 15g of group I base oil (Ib 150), 10g of ester base oil (3970) and 64.8g of group III base oil (S8), and then second mixing by adding 3.0g of detergent, 2.0g of polyisobutylene succinimide ashless dispersant, 0.8g of boronated bis-polyisobutylene succinimide dispersant, 0.75g of zinc butyloctyldialkyldithiophosphate, 0.7g of molybdenum dialkyldithiophosphate, 0.5g of phenolic antioxidant, 1g of ammonia antioxidant, 0.1g of anionic emulsifier (sodium lauryl sulfate) and 0.05g of nonionic emulsifier (Span 80); further, composition 1 was obtained.
The temperature of the first mixing is 50 ℃ and the time is 45min; the temperature of the second mixing was 59 ℃ for 50min.
Example 2
Composition 2 contained 4.0g of detergent (2 g of high base calcium sulfonate, 2g of medium base calcium sulfonate), 1.0g of ashless polyisobutylene succinimide dispersant, 1.8g of boronated bis-polyisobutylene succinimide dispersant, 0.95g of zinc butyloctyldialkyldithiophosphate, 0.5g of molybdenum dialkyldithiophosphate, 0.7g of phenolic antioxidant (L135, basf), 1.4g of ammonia antioxidant (L67, basf), 0.2g of fumarate pour point depressant, 0.12g of anionic emulsifier (sodium dodecylbenzenesulfonate), 0.06g of nonionic emulsifier (Tween 80), 10g of polymethacrylate viscosity index improver, 12g of group I base oil (Ib 150), 15g of ester base oil (3970), and 60.4g of group III base oil (HVI III 6), based on the total weight of lubricating oil composition 2.
First mixing the 0.2g fumarate pour point depressant, 10g polymethacrylate viscosity index improver, 12g group I base oil (Ib 150), 15g ester base oil (3970) and 60.4g group III base oil (HVI III 6), and then adding 4.0g detergent, 1.0g polyisobutylene succinimide ashless dispersant, 1.8g boronized bis-isobutylene succinimide dispersant, 0.95g zinc butyl octyl dialkyl dithiophosphate, 0.5g molybdenum dialkyl dithiophosphate, 0.7g phenolic antioxidant, 1.4g ammonia antioxidant, 0.12g anionic emulsifier (sodium dodecyl benzene sulfonate) and 0.06g nonionic emulsifier (Tween 80) for second mixing; further, composition 2 was obtained.
The temperature of the first mixing is 50 ℃, and the time is 30min; the temperature of the second mixing was 62 ℃ for 30min.
Example 3
Composition 3 contained 2.0g of detergent (0.8 g of high base calcium sulfonate, 1.2g of medium base calcium sulfonate), 1.0g of ashless polyisobutylene succinimide dispersant, 1.0g of boronated bis-polyisobutylene succinimide dispersant, 0.01g of zinc butyloctyl dialkyldithiophosphate, 0.2g of phenol type antioxidant (L135, basf), 0.3g of ammonia type antioxidant (L67, basf), 0.1g of fumarate pour point depressant, 0.03g of anionic emulsifier (sodium didodecylphenyl ether disulfonate), 0.02g of nonionic emulsifier (sorbitan fatty acid), 50g of polymethacrylate viscosity index improver, 6.31g of group I base oil (Ia 500), 3.22g of ester base oil (azelaic acid ester), and 34.81g of group III base oil (Yu 6), based on the total weight of lubricating oil composition 3.
First mixing the 0.1g fumarate pour point depressant, 50g polymethacrylate viscosity index improver, 6.31g group I base oil (Ia 500), 3.22g ester base oil (azelaic acid ester) and 34.81g group III base oil (Yu 6), and then second mixing with 2.0g detergent, 1.0g polyisobutylene succinimide ashless dispersant, 1.0g boronized bis-polyisobutylene succinimide dispersant, 0.01g zinc octyldialkyl dithiophosphate, 0.2g phenol type antioxidant, 0.3g ammonia type antioxidant, 0.03g anionic emulsifier (sodium didodecylphenyl ether disulfonate) and 0.02g nonionic emulsifier (fatty acid sorbitol ester); further, composition No. 3 was obtained.
The temperature of the first mixing is 55 ℃ and the time is 30min; the temperature of the second mixing is 62 ℃ and the time is 30min.
Example 4
Composition 4 contained 5.0g of detergent (2 g of high base calcium sulfonate, 3g of medium base calcium sulfonate), 2.5g of polyisobutylene succinimide ashless dispersant, 2.5g of boronated bis-polyisobutylene succinimide dispersant, 9g of zinc octyldialkyldithiophosphate, 1g of molybdenum dialkyldithiophosphate, 1g of phenol antioxidant (L135, basf), 1.1g of ammonia antioxidant (L67, basf), 0.5g of fumarate pour point depressant, 2g of anionic emulsifier (sodium didodecyl phenyl ether disulfonate), 1g of nonionic emulsifier (Tween 80), 0.1g of polymethacrylate viscosity index improver, 14.16g of group I base oil (Ia 900), 10.61g of ester base oil (sebacic ester), and 49.53g of group III base oil (S8), based on the total weight of lubricating oil composition 4.
First mixing the 0.5g fumarate pour point depressant, 0.1g polymethacrylate viscosity index improver, 14.16g group I base oil (Ia 900), 10.61g ester base oil (sebacic ester) and 59.53g group III base oil (S8), and then second mixing with 5.0g detergent, 2.5g polyisobutylene succinimide ashless dispersant, 2.5g boronized bis-polyisobutylene succinimide dispersant, 9g butyl octyl dialkyl zinc dithiophosphate, 1g molybdenum dialkyl dithiophosphate, 1g phenolic antioxidant, 1.1g ammonia antioxidant, 2g anionic emulsifier (sodium didodecyl phenyl ether disulfonate) and 1g nonionic emulsifier (Tween 80); further, composition 4 was obtained.
The temperature of the first mixing is 40 ℃, and the time is 60min; the temperature of the second mixing was 55 ℃ and the time was 60min.
Comparative example
Ordinary commercially available SN 5W-30, SP 0W-12, CI-4 20W-50 and SP 0W-20.
Test example 1
Composition 1, composition 2 and a common commercially available SN 5W-30 were placed in an incubator (H was added at a volume ratio of 1 2 O), the temperature was set at 54 ℃ for 0.5 hour, and then composition 1, composition 2 and ordinary commercially available SN 5W-30 were stirred simultaneously for 5 minutes, and then composition 1, composition 2 and ordinary commercially available SN 5W-30 were left to stand in the same environment for 48 hours, and the delamination of composition 1, composition 2 and ordinary commercially available SN 5W-30 was observed. The results are shown in FIG. 1 and Table 1.
TABLE 1
Figure BDA0003674978330000101
Figure BDA0003674978330000111
The addition of water to compositions 1 and 2 resulted in less oil and no water rich layer and a uniform emulsion layer, compared to the common commercial product SN 5W-30, indicating that compositions 1 and 2 had better emulsification with water than the commercial lubricating oil.
Test example 2
Composition 3, composition 4 and ordinary commercially available SP 0W-12, CI-4 20W-50 were placed in an incubator (0.1 to 1 2 O and methanol) was set at 54 ℃ for 0.5 hour, then composition 3, composition 4 and ordinary commercially available SP 0W-12 and CI-4 20W-50 were stirred simultaneously for 5 minutes, and then composition 3, composition 4 and ordinary commercially available SP 0W-12 and CI-4 20W-50 were left to stand in the same environment for 48 hours, 240 hours, 480 hours and 720 hours, and the delamination of composition 3, composition 4 and ordinary commercially available SP 0W-12 and CI-4 20W-50 was observed. The results are shown in Table 2.
TABLE 2
Figure BDA0003674978330000112
Figure BDA0003674978330000121
In contrast to the conventional commercial products SP 0W-12 and CI-4 20w-50, no water layer was formed after addition of water and methanol to compositions 3 and 4, indicating that methanol and water were both emulsified by compositions 3 and 4 when the lubricating oil contained methanol.
Test example 3
The friction wear test was carried out on composition 1, composition 2, composition 4, and comparative oils SP 0W-20, SN 5W-30, SP 0W-12 using HFRR (high frequency reciprocating rig). The test conditions are that the contact load is 100g, the stroke is 1mm, the reciprocating frequency is 50Hz, the temperature is 50 ℃, and the test duration is 60min. The results are shown in Table 3.
TABLE 3
Figure BDA0003674978330000122
Figure BDA0003674978330000131
Compositions 1, 2 and 4 had excellent frictional wear properties as compared with the conventional commercial products SP 0W-12, SP 0W-12 and SN 5W-30.
Test example 4
The composition 2 and the ordinary SN 5W-30 engine oil on the market were subjected to an engine durability test (400 h alternating load test) on a 100% methanol engine, and after the completion of the test, the old oils of the composition 2 and the SN 5W-30 engine oil were sampled and analyzed, and the results are shown in Table 4:
TABLE 4
Figure BDA0003674978330000132
Composition 2 was used in a 100% methanol engine run for 400 hours with no engine abnormalities. The commercially available SN 5W-30 engine oil is used for an engine using 100% methanol, and when the engine runs for 100 hours, the engine is normal; when the running time reaches 200h, the engine begins to generate abnormal noise, and the test is immediately terminated. The metal content of composition 2 (after 400h of operation) is significantly lower than the metal content of the commercially available SN 5W-30 (after 200h of operation). The lubricating oil of the present disclosure for a 100% methanol-using engine has excellent anti-friction wear properties while increasing the service life of the engine compared to commercially available SN 5W-30 engine oils.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (3)

1. A lubricating oil composition for a methanol-fueled engine, comprising an additive and a balance of a base oil; the base oil contains API group I base oil, ester base oil and API group III base oil; the aromatic hydrocarbon content of the base oil is 1 to 5wt%;
the additive contains a viscosity index improver and an emulsifier; the viscosity index improver is an ester viscosity index improver;
based on the total weight of the lubricating oil composition, the composition contains 2.5 to 4.5 wt% of a detergent, 0.8 to 2.2wt% of an ashless polyisobutylene succinimide dispersant, 0.6 to 2wt% of a boronized bis-polyisobutylene succinimide dispersant, 0.7 to 1wt% of zinc butyl octyl dialkyl dithiophosphate, 0.4 to 0.8wt% of molybdenum dialkyl dithiophosphate, 1.4 to 2.1wt% of an antioxidant, 0.15 to 0.35wt% of a fumarate pour point depressant, 7 to 111wt% of a polymethacrylate viscosity index improver, 0.14 to 0.19wt% of an emulsifier and the balance of base oil;
the antioxidant comprises a phenolic antioxidant and an ammonia antioxidant, and the weight ratio of the phenolic antioxidant to the ammonia antioxidant is 0.45 to 0.75;
the emulsifier contains an anionic emulsifier and a nonionic emulsifier, and the weight ratio of the anionic emulsifier to the nonionic emulsifier is 0.09 to 0.13;
the weight ratio of the API group I base oil to the ester base oil to the API group III base oil is 10 to 18.
2. A method of making the lubricating oil composition of claim 1, comprising the steps of: firstly mixing base oil, a viscosity index improver and a pour point depressant, and then adding a dispersant, a detergent, an anti-friction agent, an antioxidant and an emulsifier for second mixing; the friction reducing agent is zinc butyl octyl dialkyl dithiophosphate and molybdenum dialkyl dithiophosphate.
3. The process according to claim 2, wherein the first mixing is carried out at a temperature of 40 to 55 ℃ for a time of 30 to 60min; the temperature of the second mixing is 55 to 62 ℃, and the time is 30 to 60min.
CN202210621963.8A 2022-06-01 2022-06-01 Lubricating oil composition for methanol fuel engine and preparation method thereof Active CN115058274B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210621963.8A CN115058274B (en) 2022-06-01 2022-06-01 Lubricating oil composition for methanol fuel engine and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210621963.8A CN115058274B (en) 2022-06-01 2022-06-01 Lubricating oil composition for methanol fuel engine and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115058274A CN115058274A (en) 2022-09-16
CN115058274B true CN115058274B (en) 2023-01-31

Family

ID=83198636

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210621963.8A Active CN115058274B (en) 2022-06-01 2022-06-01 Lubricating oil composition for methanol fuel engine and preparation method thereof

Country Status (1)

Country Link
CN (1) CN115058274B (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7413583B2 (en) * 2003-08-22 2008-08-19 The Lubrizol Corporation Emulsified fuels and engine oil synergy
CN101298579A (en) * 2007-05-01 2008-11-05 雅富顿公司 Lubricating oil composition for marine applications
WO2012048931A1 (en) * 2010-10-14 2012-04-19 Evonik Rohmax Additives Gmbh A motor having improved properties
CN102851102B (en) * 2012-08-27 2014-04-02 贵州龙和能源有限责任公司 Lubricating oil special for methanol gasoline engine and preparation method thereof
CN104830433A (en) * 2015-05-29 2015-08-12 马健 Lubricating oil for diesel engines
CN114426896B (en) * 2020-10-29 2023-03-10 中国石油化工股份有限公司 Lubricating oil composition for diesel engine and preparation method thereof
CN113174285B (en) * 2021-04-27 2022-08-30 中国石油化工股份有限公司 Engine oil composition, preparation method thereof and method for improving energy saving performance and/or bearing abrasion resistance of engine
CN113862064A (en) * 2021-10-13 2021-12-31 中国石油化工股份有限公司 Engine oil composition

Also Published As

Publication number Publication date
CN115058274A (en) 2022-09-16

Similar Documents

Publication Publication Date Title
CN115125053B (en) Lubricating oil composition for hydrogen-fuelled internal combustion engine, method of use and process for preparing the same
US6649576B2 (en) Lubricating oil compositions
CN105087113A (en) Lubricating oil composition for electric vehicle transmission system
US20130102509A1 (en) Lubricating composition for use in diesel engines compatible with biofuel
CN1314785C (en) High alkali cleaning additive
WO2016086858A1 (en) Marine cylinder oil composition, preparation method and use thereof
CN106566617A (en) Preparation method for energy-saving and environment-friendly diesel engine oil
CN108003991A (en) A kind of plant based lubricating oil and its application
CN107699320A (en) A kind of gas engine Special lubricating fluid composition
JP2019089938A (en) Lubricant composition
CN107892978A (en) A kind of long-life energy-saving diesel engine oil composition and preparation method thereof
CN115058274B (en) Lubricating oil composition for methanol fuel engine and preparation method thereof
JP2005002341A (en) Lubricant composition
CN113862064A (en) Engine oil composition
CN103184091B (en) A kind of marine general-purpose diesel engine lubricating oil composition
CN112159697A (en) Marine medium-speed engine oil composition, preparation method and application thereof
CN102703185A (en) Compound calcium sulfonate base lubricating grease and preparation method thereof
CN103361148B (en) Lubricating oil composition for motorcycle
CA2405650C (en) A gas engine lubricating oil composition
CN107892980A (en) Marine diesel fluid composition and application thereof
CN110862856A (en) Diesel engine oil
CN112646648A (en) Marine medium-speed engine oil composition and application thereof
CN112029560A (en) Water-resistant marine medium-speed engine oil composition, preparation method and application thereof
CN105567387A (en) Stationary gas engine oil composition
CN107502411B (en) Universal diesel engine oil for ships

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant