273 results about "Oil soluble" patented technology

The invention relates to an oil-soluble viscosity reducer composition and a preparation method and application thereof.The oil-soluble viscosity reducer composition is formed by compounding alkyl pyridine and coker diesel oil and can rapidly permeate into thick oil, the viscosity of the thick oil is greatly reduced, and the fluidity of the thick oil is improved. When the oil-soluble viscosity reducer is used in heavy oil reservoir exploitation, storage and transportation processes, the use amount of thin oil for blending heavy oil with thin oil can be saved, the cost of the oil-soluble viscosity reducer is reduced, efficient exploitation, gathering and transportation of the heavy oil reservoir are guaranteed, cost-reducing and efficiency-increasing exploitation of the heavy oil reservoir is realized, and high-added-value comprehensive utilization of coker diesel oil is facilitated.

The invention relates to the technical field of battery negative electrode materials, in particular to irregular spherical porous carbon and a preparation method and application thereof, and a silicon-carbon composite material and a preparation method and application thereof. The liquid phenolic resin is emulsified, compounded, cross-linked and cured under the condition of an oil-soluble and water-soluble compound emulsifier, meanwhile, the shape of the obtained resin is changed in an ultrasonic-assisted mode under the combined action of ultrasonic disturbance and different interfacial tensions, spherical resin is adjusted into irregular spherical resin, and the spherical resin is prepared into the irregular spherical resin. And performing pyrolysis and gas activation to obtain the irregular porous spherical carbon. Compared with spherical carbon, the irregular spherical carbon prepared by the invention has the advantages that on the premise of keeping the strength of the spherical carbon, the irregular spherical carbon can increase the contact area between carbon particles and a binder, and the carbon particles and the binder are not easy to separate, so that the cycling stability of a battery (especially a lithium ion battery) is improved.

The invention discloses a method for preparing acid sophorolipid, and belongs to the technical field of biological fermentation. According to the method, candida is used as a fermentation strain, a composite carbon source culture medium containing a water-soluble carbon source and an oil-soluble carbon source is adopted, and the content of residual oil is monitored in real time in the fermentation process; when the residual oil content exceeds a threshold value of 5g / L, the emulsifying agent of 0.1 g / L-0. 5g / L is supplemented, and the stirring rotating speed is increased by 20-50rpm, so that the emulsification of an oil phase and the utilization of the thalli on the oil-soluble carbon source are promoted. By accurately controlling the residual oil content in the fermentation process, the proportion of the acidic sophorolipid and the carbon source conversion rate are remarkably increased, the proportion of the acidic sophorolipid is increased to 60% from 30% of a traditional process, the carbon source conversion rate is increased to 65% from 40%, the problems that the increasing means of the proportion of the acidic sophorolipid is single, and the carbon source is wasted are effectively solved, and the method is suitable for industrial production. The method has the advantages of simple process, low cost, environmental protection and the like.

The invention discloses conductive lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease materials, the conductive lubricating grease comprises the following components by mass: 50-80 parts of base oil, 5-15 parts of a thickening agent, 3-10 parts of an additive, 5-20 parts of an oil soluble ionic liquid, and 1-10 parts of nanoscale conductive solid particles; the oil-soluble ionic liquid is prepared from trioctylamine, bromohexadecane and sodium di-tert-butyl phosphate. According to the conductive lubricating grease provided by the invention, the oil-soluble ionic liquid and the nanoscale conductive solid particles synergistically conduct electricity, so that the conductive lubricating grease has a tunnel conductive effect and excellent conductivity; besides, due to synergistic conduction of the oil-soluble ionic liquid and the nanoscale conductive solid particles, the addition amount of the conductive solid particles can be reduced, the anti-attrition effect of the conductive lubricating grease is further improved, meanwhile, the nanoscale conductive solid particles have a good anti-attrition effect, the solid size and the oil film thickness are both in nanoscale sizes, and the conductive lubricating grease has a good anti-attrition effect. Therefore, the conductive lubricating grease is excellent in overall anti-wear effect.

The invention discloses an oil-soluble composition containing recombinant collagen. The composition comprises recombinant collagen, a polyhydroxy compound, grease, an emulsifier and water. The invention also provides a preparation method of the composition. The composition disclosed by the invention has the characteristics of good transparency, high drug loading capacity, good adaptability and good stability.

The invention discloses a composite gel particle plugging agent for plugging steam channeling as well as preparation and application of the composite gel particle plugging agent. Belongs to the technical field of oilfield chemistry. The plugging agent disclosed by the invention has a triple combination structure of'rigid inorganic core-elastic gel shell-oil soluble surface layer ', and the elastic gel shell permeates through a cross-linked network and is chemically anchored in a porous structure of the core to form an organic-inorganic interpenetrating interface. The surface modifier is an oil soluble polymer. The plugging agent disclosed by the invention realizes cooperation of rigid support, elastic plugging and flexible selectivity, so that after the plugging agent is aged for 7 days in a steam environment with the temperature of 300 DEG C and the mineralization degree of 20 * 10 < 4 > mg / L, the volume retention rate is greater than or equal to 85%, the single-particle compressive strength is greater than or equal to 1.5 MPa, and the ratio (selectivity index) of the plugging rate to a water-phase channel to the damage rate to an oil-phase channel is greater than or equal to 7.0; the technical problems that an existing plugging agent is prone to failure under the extremely high temperature and high salt, the plugging strength is low, and flexible selectivity is lacked are effectively solved.

The invention belongs to the field of new daily chemical materials, and discloses a sunscreen microbead gel composition based on interfacial tension regulation, which comprises a gel-state water-based continuous phase and an oil-based dispersion phase containing an oil-soluble sunscreen agent, the oil-based dispersion phase is composed of a plurality of microbeads with the particle size of 0.5-2 mm; the surface tension of the water-based continuous phase is 40 to 65 dyn / cm; the weight of the oil-based dispersion phase is not less than 10% of the total weight of the sunscreen microbead gel composition. According to the scheme, an oil-based dispersion phase is dispersed into gel to form suspended bead gel, and by controlling the particle size, the surface tension and the volume content of the beads, all the beads can be synchronously broken after the gel is coated on the skin, so that the oil phases in the beads can be spread at the same time, and meanwhile, a good coating hand feeling is kept; the composition provided by the invention can realize relatively low ultraviolet transmittance. Meanwhile, the invention further provides application and cosmetics of the composition.

The invention relates to a method for manufacturing a super-hydrophobic PVC (polyvinyl chloride) pipe based on a phase separation pore-forming technology. According to the method, graded pores are constructed through compounding of a pore-forming agent system, water solubility and oil solubility in a synergistic manner; then ensuring that the pore-forming agent accurately positions the inner wall by utilizing an extrusion directional enrichment technology; a toxic solvent is replaced by aqueous medium phase separation; and finally, the coating is prevented from falling off through in-situ hydrophobization. A solution with high performance, low cost and zero pollution is provided for the super-hydrophobic pipe.

The invention discloses an intelligent tracer liquid production profile transient monitoring interpretation system and interpretation method, and relates to the technical field of oil and gas exploitation, the system comprises a tracer deployment module, a wellhead sampling module, a transient flow simulation module and an interpretation analysis module; according to the method, intelligent chemical tracer deployment and transient flow model analysis are combined, non-intervention type monitoring is achieved by pre-burying the oil-soluble / water-soluble inert tracer on the outer side of the horizontal well completion pipe string, and the limitation that traditional production logging needs downhole operation is broken through; a full-flow one-dimensional single-phase transient flow model covering a horizontal shaft, an inclined well section and a surface pipeline is established, pressure flow distribution is iteratively solved by adopting a discrete difference method, a tracer group flushing model and an arrival model are connected in parallel, and the liquid production speed and profile contribution of each production layer are accurately analyzed by inverting wellhead high-frequency sampling data. Real-time dynamic monitoring under complex well conditions can be achieved, production interference is avoided, and the inert tracer is resistant to high temperature and corrosion environments and wide in applicability.

The invention provides a gas engine lubricating oil composition and a preparation method thereof. The gas engine lubricating oil composition of the present invention comprises: (A) an alkyl phosphate compound; (B) alkylated diphenylamine; (C) a polyisobutylene succinic acid pentaerythritol ester dispersing agent; (D) a salicylate and / or sulfonate; (E) zinc dialkyl dithiophosphate; (F) an oil-soluble organic molybdenum friction modifier; (G) a metal corrosion inhibitor; (H) a pour point depressant; (I) a major amount of a lubricating base oil. The gas engine lubricating oil composition disclosed by the invention has excellent high-temperature oxidation resistance, cleaning performance, extreme pressure anti-wear performance and anti-corrosion performance.

The application provides a formula system and a preparation method for improving the solubility and stability of ceramide NP, and belongs to the cosmetic field.The formula system comprises: an active ingredient, an emulsifier, a thickening agent and a solvent; the active ingredient is ceramide NP; the emulsifier comprises at least one of an anionic emulsifier, a natural polymer emulsifier, a non-ionic emulsifier and a phospholipid emulsifier; and the solvent comprises water, a polyhydric alcohol and an oil-soluble solvent.The formula system has an unexpected technical effect of greatly improving the stability of an oil-in-water cosmetic containing more ceramide NP by selecting suitable emulsifiers, thickening agents and solvents.

The invention provides a semi-interpenetrating network polymer plugging agent for drilling fluid and a preparation method and application thereof, and the preparation method comprises the following steps: 1) mixing an oil-soluble monomer A and an oil-soluble polymer B, and completely dissolving the oil-soluble polymer B to obtain an oil phase; 2) mixing an emulsifier A, an emulsifier B, a water-soluble organic monomer C and water to obtain a water phase; 3) mixing 65-70% of the oil phase and the water phase, and emulsifying to obtain an emulsion reaction mixed solution; (4) carrying out heat-preservation polymerization on the emulsion reaction mixed solution and a section of initiator to obtain a polymerized emulsion; and 5) continuously carrying out heat preservation polymerization on the polymerized emulsion, 30-35% of the remaining oil phase, a cross-linking agent and a second-stage initiator to obtain the semi-interpenetrating network polymer plugging agent. The plugging agent has temperature resistance, elastic deformability and cohesiveness, the temperature resistance can reach 180 DEG C, the plugging agent is good in compatibility with oil-based drilling fluid and water-based drilling fluid, the filtration loss reduction and plugging effects are obvious, and the plugging agent can be used for plugging high-temperature strata; and the adhesive wall protection effect is also achieved.

The present application belongs to the technical field of biological oil catalytic hydrogenation, and particularly relates to a bio-based oil-soluble molybdenum catalyst, a preparation method and application thereof. The preparation method of the bio-based oil-soluble molybdenum catalyst provided by the present application comprises: mixing a molybdenum source, a bio-based linear organic acid with a carbon atom number of 16 or more and an additive, heating and reacting, and separating to obtain the bio-based oil-soluble molybdenum catalyst; the additive is selected from at least one of tetrahydro naphthalene and decahydro naphthalene. The bio-based oil-soluble molybdenum catalyst green material obtained by the present application has optimal activity and high dispersibility when used, can realize more sufficient mixing with raw materials, forms nano high-dispersed molybdenum sulfide through sulfuration, and realizes high-efficiency hydrogenation refining of oil products through the joint action of hydrogen and sulfur, while reducing the sulfur, oxygen and metal residues in the product oil.

A wellbore fluid includes an aqueous base fluid, and a fluid loss material formulated and configured to form a filtercake on surfaces of an earth formation responsive to exposure to a wellbore pressure. The fluid loss material includes at least one polymer, and a bridging material including a fatty acid salt of at least one of an alkali metal, an alkaline metal, ammonium, quaternary ammonium, a Group IIIA element, a Group IVA element, a Group VA element, a Group IB element, a Group IIB element, or a Group VIIB element of the periodic table, the bridging material comprising an oil-soluble material formulated and configured to dissolve out of the filtercake to form channels in the filtercake. Related methods and wellbore fluids are disclosed.

The invention relates to an oil-soluble temporary plugging agent with multiple layers of microcapsules and a preparation method of the oil-soluble temporary plugging agent, and belongs to the technical field of oilfield chemical engineering and underground construction. The microcapsule comprises a microcapsule core and a hydrophilic protective film coated on the surface of the microcapsule core, the microcapsule core is composed of modified low-melting-point polypropylene, an oil-soluble auxiliary agent and a capsule type triggering agent, and the hydrophilic protective film is obtained by drying and curing sodium carboxymethyl cellulose / polyvinyl alcohol coating liquid. Degradation of the temporary plugging agent is promoted through the embedded oil-soluble additive and the capsule type triggering agent, the capsule type triggering agent slowly releases degradation-promoting components, timed automatic degradation is achieved, it is ensured that a plugging layer completely disappears according to preset time while effectively plugging downhole fluid, and therefore stratum permeability is restored, subsequent downhole operation and production are guaranteed, and the temporary plugging agent is safe and reliable. The dual requirements of stability of the temporary plugging agent and automatic plug removal at preset time are met, and the problems in the background technology are solved.

The application provides a hybrid vehicle engine lubricating oil composition and a preparation method thereof.The hybrid vehicle engine lubricating oil composition comprises the following components: (A) a benzotriazole derivative; (B) a composite antioxidant comprising an alkylated diphenylamine antioxidant and a sulfide phenolic antioxidant; (C) a polyisobutylene succinimide ashless dispersant; (D) a sulfonate and / or a sulfated alkyl phenate; (E) a zinc dialkyldithiophosphate; (F) a composite friction modifier comprising an oil-soluble organic molybdenum friction modifier and an ashless friction modifier; (G) a phosphite type extreme pressure antiwear agent; and (H) a major amount of a lubricating oil base oil; wherein the structure of the benzotriazole derivative is shown in formula (I): wherein the definitions of the groups are shown in the specification.The hybrid vehicle engine lubricating oil composition has excellent antioxidant performance, corrosion resistance and rust resistance, and good emulsion retention performance and wear resistance.

The invention relates to the field of refrigerating systems, and discloses an ionic liquid additive, a preparation method of the ionic liquid additive, refrigerating machine oil and a working fluid composition for a refrigerating machine. The ionic liquid additive has a structure as shown in a formula 1, wherein R1 and R2 are independently selected from C1-C10 alkyl groups. The invention provides a novel ionic liquid additive, the ionic liquid additive comprises BF4-anions and cations optimized and improved based on a guanidine structure, the BF4-anions and the cations are synergistically used for refrigerating machine oil, excellent wear resistance and metal stability can be shown, the friction coefficient of a friction pair can be remarkably reduced, and the ionic liquid additive has excellent thermal stability; the ionic liquid additive has the non-volatile characteristic, almost has no vapor pressure, has the characteristics of odorlessness, non-combustibility and the like, is environment-friendly, has good oil solubility in the base oil, and is suitable for being used as an anti-wear additive of the refrigerating machine oil; formula 1.

The present invention relates to a UV filter concentrate comprising at least one oil-soluble organic UV filter UV1 that is liquid at room temperature, and at least two different oil-soluble organic UV filters UV2 and UV3 that are crystalline at room temperature, and at least one diol. The UV filter concentrate is processed into a sunscreen composition or a cosmetic composition or a home care composition.

The invention discloses an oil-soluble temporary plugging agent for protecting a broad-spectrum drilling oil and gas reservoir and a preparation method, and belongs to the technical field of temporary plugging agents, the oil-soluble temporary plugging agent comprises the following components by weight: 1.2-6.8 parts of a flexible resin material; 1.9 to 7.5 parts of a rigid resin material; 0.3 to 0.7 part of a particle size regulator; 0.2 part to 0.6 part of a particle nucleating agent; and 0.1 to 0.3 part of an interface modifier. The oil-soluble temporary plugging agent has the advantages that the softening point is adjustable in the range of 60-120 DEG C, the particle size is controllable in the range of 0.01-2.0 mm, and due to the flexible structural characteristic of the oil-soluble temporary plugging agent, the oil-soluble temporary plugging agent has wide universality and can be perfectly matched with pore structures of different oil and gas reservoirs, and the problems that softening points of a traditional oil-soluble temporary plugging agent are intensively distributed, and the particle size is not matched with the pore structures of the reservoirs are effectively solved.

The invention discloses an oil-soluble Mo-functionalized graphene composite material as well as a preparation method and application thereof, and belongs to the field of lubricating oil additives. The preparation method comprises the following steps: (1) mixing a Mo-functionalized graphene composite material with an organic solvent, and performing ultrasonic treatment to form a solution A; (2) adding an amine reducing agent into the solution A, carrying out reduction reaction, filtering and washing to obtain a filter cake; and (3) mixing a long-chain organic compound, a coupling agent and a surfactant, performing ultrasonic treatment to form a mixed solution B, performing ultrasonic dispersion on the filter cake into the mixed solution B, and performing heating treatment, cooling, filtering, washing and drying to obtain the oil-soluble Mo-functionalized graphene composite material. Through partial reduction and chemical grafting processes, the Mo-functionalized graphene composite material is subjected to selective reduction firstly, then a coupling agent is utilized to graft a long-chain organic compound to the surface of the composite material, and an oil-soluble group is introduced, so that the dispersion stability and the anti-wear and anti-friction performance in lubricating oil are remarkably improved.

To provide an oily cosmetic which does not discolor during production, is excellent in defoaming properties, has an appearance color and a coating color different from each other, has a bright color when applied, and is reduced in stickiness.SOLUTION: An oil-based cosmetic comprising (A) nonporous spherical silica having a mean particle size of 2 to 20 μm and an oil absorption of 30mL / 100g or less, (B) an oil-soluble dye, (C) a colorant other than the ingredient (B), (D) a non-volatile liquid oil, and (E) a solid wax, wherein the content of the ingredient (A) is 12% by mass or more.SELECTED DRAWING: None

The invention relates to the field of lubricating materials, and discloses a boron-molybdenum ricinoleic acid lubricating oil anti-wear agent and a preparation method thereof.The preparation method comprises the steps that ricinoleic acid serves as a raw material, an active functional group is introduced through epoxidation and amidation reaction, then esterification reaction with boric acid / molybdic acid is conducted, and a modified product with a boric acid ester and molybdate ester composite structure is prepared; a boron-molybdenum synergistic lubricating system is constructed, and a multi-scale composite lubricating film is formed by utilizing the chemical film-forming property of boron and the layered antifriction property of molybdenum; the oil solubility and the metal surface adsorption capacity are enhanced through polar modification of an epoxy group and an amide group; the obtained additive keeps stable at high temperature, can significantly reduce the friction coefficient and the wear scar diameter, is suitable for lubrication protection under high-load and wide-temperature-range working conditions, and has good biodegradability and industrial compatibility.

An electric motor lubricating fluid for an electric motor system includes a lubricating base oil, a tolyltriazole resist, an oil-soluble phosphorus antiwear additive, and a sulfonate detergent in an amount such that effective performance in terms of copper leaching and extreme pressure wear is facilitated when tolyltriazole is present.

The present application belongs to the technical field of tribology, and provides a kind of lubricating oil system and its preparation method and application, oil-based super-slippery system.The lubricating oil system provided by the present application includes base oil and oil-soluble copper-based nanoparticle;The mass content of oil-soluble copper-based nanoparticle in the lubricating oil system is 0.01-5.0%.The oil-soluble copper-based nanoparticle in the lubricating oil system provided by the present application can improve the load capacity and anti-wear and friction-reducing performance of base oil as an additive;At the same time, under the action of frictional shear, the oil-soluble copper-based nanoparticle in the lubricating oil system provided by the present application can play a role in friction catalysis, promote the formation of high-performance carbon-based material, i.e., "the third body", in the friction interface and lubricating oil, thereby reducing the friction coefficient between polymer-metal pair to 10 ‑3 order of magnitude, and super-slippery phenomenon occurs, and the wear rate is at 10 ‑8 -10 ‑9 mm 3 / Nm level, reaching near-zero wear state.

The application provides a gas-phase rust-proof oil and a preparation method and a rust-proof method thereof, and is characterized in that the gas-phase rust-proof oil comprises 60-80 parts by weight of base oil, 5-20 parts by weight of an oil-soluble sulfonate rust-proof agent and 3-15 parts by weight of a gas-phase corrosion inhibitor; wherein the gas-phase corrosion inhibitor comprises a first gas-phase corrosion inhibitor and a second gas-phase corrosion inhibitor; the weight ratio of the first gas-phase corrosion inhibitor and the second gas-phase corrosion inhibitor is 1-6:1; the first gas-phase corrosion inhibitor is selected from an amine with a morpholine structure; the second gas-phase corrosion inhibitor is different from the first gas-phase corrosion inhibitor and is selected from at least one of an amine with a benzene ring structure, an amine with a nitrous acid structure and an amine with a carboxylic acid structure; the gas-phase rust-proof oil of the application not only has excellent salt spray rust-proof performance and gas-phase rust-proof performance, but also does not separate for a long time, and the appearance is transparent and turbid; in the method for preparing the gas-phase rust-proof oil, the process temperature is lower than 50 DEG C, the energy consumption is low, the production process is simple, and the time consumption is less.

The invention belongs to the technical field of concrete admixtures, and provides a slump-retaining anti-mud agent based on artificial sand mud powder encapsulation in-situ solid sealing and application of the slump-retaining anti-mud agent. The slump-retaining anti-mud agent comprises a component A and a component B, the component A comprises a water-soluble polyfunctional amine compound; the component B comprises an oil-soluble polyfunctional acyl chloride or sulfonyl chloride compound; the molar ratio of the amido group in the component A to the acyl chloride group or the sulfonyl chloride group in the component B is 1: (0.7-1.2). After water-soluble components in the anti-mud agent are adsorbed on the surface of mud powder, small molecules of oil-soluble components are rapidly diffused to a water-oil interface on the surface of the mud powder, an irreversible interfacial polymerization reaction is generated, a compact and waterproof polymer shell is formed, and the mud powder is separated from external slurry, so that the mud powder cannot adsorb water and additives again; therefore, the problem that the slump loss of the mud-containing aggregate concrete is too fast is solved, and meanwhile, the unit water consumption and the cementing material consumption of the concrete are greatly reduced on the premise that the mechanical property and the durability are not reduced.

This invention belongs to the field of oilfield chemical technology and discloses a surface-modified ultrafine graphite-based drilling fluid extreme pressure lubricant and its preparation method. The extreme pressure lubricant comprises a base oil, a long-chain fatty acid ester oiliness agent, a liquid extreme pressure agent, a surface-modified solid extreme pressure agent, a rheology modifier, and an emulsifier. The surface-modified solid extreme pressure agent is prepared by using ultrafine graphite powder as a matrix, undergoing a first modification with sulfurized oleic acid polyethylene glycol ester, and a second modification with an oil-soluble dispersant. This invention utilizes the non-degradable nature of modified graphite at high temperatures, combined with a liquid extreme pressure agent, to form a high-strength composite reactive film at the high-temperature friction interface through a carbon-sulfur-boron synergistic effect. Under the triple synergistic lubrication mechanism of the oil film, the chemically reactive extreme pressure film, and the solid lubricating film, the technical problem of easy demulsification and lubrication failure of traditional lubricants in environments with 200℃ high temperature and 36% saturated salt water is effectively solved.

The invention discloses an alfacalcidol emulsion and a preparation method thereof, the pH value of the alfacalcidol emulsion is 6.5-8.0, and each 1000 ml of the alfacalcidol emulsion comprises 1-30 g of alfacalcidol, 100-300 g of oil for injection, 6-20 g of a phospholipid emulsifier, 0-20 g of poloxamer 188, 20-30 g of an osmotic pressure regulator and a proper amount of water. The preparation method of the drug-loaded fat emulsion injection comprises the following steps: preparing an oil phase; preparing a water phase; preparing a primary emulsion; performing high-pressure homogenization; adjusting the pH value; and sterilizing and storing. The alfacalcidol serves as an oil-soluble substance, can be dissolved in small oil drops (emulsion particles) of the emulsion or on an interfacial film, and can keep stable physicochemical properties and enhance the slow release performance in the storage process under certain conditions, so that the drug effect time is prolonged.

The invention relates to the technical field of graphene modification, and particularly discloses a preparation method of modified graphene for lubricating oil, which comprises the following steps: ultrasonically dispersing graphene in water to obtain a graphene dispersion liquid; potassium octadecyl benzene sulfonate is added into the graphene dispersion liquid, and a stirring reaction is performed for 10-20 min; then adding ammonium molybdate and sodium sulfide into the system, adjusting the pH value of the reaction system to 4.5-6, and reacting for 1-2 hours under the reflux stirring action at 60-110 DEG C; adding hydroxylamine hydrochloride into the reaction system, and continuously stirring to react for 2-4 hours; and finally, carrying out centrifugal separation on the reaction liquid, washing with ethanol and distilled water for multiple times, and carrying out centrifugal separation to obtain the modified graphene. According to the preparation method of the modified graphene provided by the invention, a stable and uniform lubrication enhancement layer can be constructed on the surface of the graphene in situ, so that the graphene is endowed with excellent oil solubility and oil phase dispersion stability.