80 results about "Polyisobutylene succinimide" patented technology

The invention discloses high-performance anti-wear engine lubricating oil as well as a preparation method and application thereof. The high-performance anti-wear engine lubricating oil is prepared from the following raw materials: self-developed lubricating oil base oil, poly-alpha-olefin, zinc dialkyl dithiophosphate, calcium sulfonate, polyisobutylene succinimide, an antioxidant, polymethacrylate, an organic molybdenum complex, a de-foaming agent and a pour point depressant. The preparation method comprises the following steps: 1) synthesizing 9, 10-bis (2-tert-butyl-4-methylphenoxy) trimethylolethane stearate as base oil of the lubricating oil; and 2) mixing the base oil with other assistants to obtain the high-performance anti-wear engine lubricating oil. According to the preparation method, novel-like synthetic ester oil is firstly prepared, a phenol group and a large steric hindrance substituent group are introduced into a polymer, the anti-oxidation function is directly built in base oil molecules, meanwhile, super-strong heat resistance is achieved, and finally the high-performance anti-wear engine lubricating oil is obtained and can be applied to high-end application scenes such as aero-engines or gas turbines.

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine (HICE) during operation of the engine. The method includes the steps of: a) providing to the HICE a lubricating oil composition including or resulting from the admixing of: i) a base oil having a KV100 of less than or equal to 12 cSt and included at greater than 40 wt.% of the composition and comprising a Group I base oil, a Group II base oil, or combinations thereof; ii) at least one optionally borated polyisobutylene succinimide (PIBSA-PAM) dispersant at from 0.25 wt.% to 12.0 wt.% of the composition, wherein the optionally borated PIBSA-PAM dispersant is selected from the group consisting of lower molecular weight PIB SA-PAM dispersant (Mn less than 1600 g / mol), higher molecular weight PIBSA-PAM dispersant (Mn 1600 g / mol or more), and combinations thereof; iii) at least one overbased metal containing detergent with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition; and iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.5 wt.%, a total phosphorous level of less than or equal to 0.120 wt.%, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60; and b) providing a fuel comprising hydrogen to the hydrogen fueled internal combustion engine; and c) combusting the fuel in the hydrogen fueled internal combustion engine. Also provided are lubricating oil compositions for use in a HICE to reduce the propensity for abnormal combustion events.

The invention discloses a hydrogenation device scale inhibitor for heavy high-sulfur raw oil and a preparation method of the hydrogenation device scale inhibitor, and relates to the technical field of scale inhibitors. The scale inhibitor is prepared from a polyisobutylene succinimide dispersing agent, a high-temperature-resistant scale inhibition dispersing agent, an anti-rust agent, an imidazoline corrosion inhibitor, an antioxidant, a sulfide chelating agent, a clearing agent, cup carbazole alkylbenzene sulfonate and a solvent in specific parts by weight. The preparation method comprises the following steps: heating the solvent to 80-100 DEG C, sequentially adding the other components, and stirring for 30-40 minutes. Aiming at the characteristics of heavy high-sulfur raw oil, the scale inhibitor realizes high scale inhibition rate, excellent high-temperature stability and strong sulfur corrosion resistance through a multi-component synergistic effect, effectively solves the problems of scaling and corrosion of a hydrogenation device, prolongs the operation cycle of the device, and is suitable for a hydrogenation process of high-sulfur and high-asphaltene raw oil.

The invention belongs to the technical field of gearbox oil preparation, and particularly relates to gearbox oil and a preparation method thereof. The gearbox oil is prepared from the following raw materials: O, O '-diisoamyl dithiophosphate sodium salt, isooctyl acidic phosphate octadecylamine, 4, 4'-methylene bis (2, 2, 6-trimethyl-1, 3-pentanedione)-1, 2, 4-trimethyl-1, 3-pentanedione, 2, 4, 6-trimethyl-1, 3- The lubricating oil is prepared from 2, 6-di-tert-butylphenol), dialkyl dithiocarbamate, triethanolamine borate, methylbenzotriazole, a 2-butyl acrylate homopolymer, a hydrogenated styrene-diene copolymer, boronized polyisobutylene succinimide and the balance of base oil. The base oil is prepared from dipentaerythritol ester, poly-alpha-olefin, palm oil, 1-n-butyl naphthalene and dodecylphenol. According to the gearbox oil disclosed by the invention, the raw materials have a synergistic effect, so that the prepared gearbox oil has very good oxidation stability, corrosion resistance and wear resistance.

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine (HICE) during operation of the engine. The method includes the steps of: a) providing to the HICE a lubricating oil composition including or resulting from the admixing of: i) a base oil having a KV100 of less than or equal to 12 cSt and included at greater than 50 wt.% of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; ii) at least one borated polyisobutylene succinimide (PIBSA-PAM) dispersant at from 0.25 wt.% to 8.0 wt.% of the composition to deliver from 30 to 1000 ppm by weight of total boron to the composition, wherein the borated PIBSA-PAM dispersant is selected from the group consisting of lower molecular weight PIBSA-PAM dispersant (Mn less than 1600 g / mol), higher molecular weight PIBSA-PAM dispersant (Mn 1600 g / mol or more), and combinations thereof; iii) at least one overbased metal containing detergent with a Total Base Number (KOH / g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition; and iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.5 wt.%, a total phosphorous level of less than or equal to 0.120 wt.%, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60; b) providing a fuel comprising hydrogen to the HICE; and c) combusting the fuel in the HICE. Also provided are lubricating oil compositions and concentrates for use in a HICE to reduce the propensity for abnormal combustion events.

The application belongs to the technical field of lubricating oil additives, and particularly relates to a polyisobutylene succinimide dispersant as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing polyisobutylene maleic anhydride, base oil and aromatic hydrocarbon solvent, then adding aminobenzene boronic acid, and performing reaction by increasing temperature to reflux temperature, and obtaining the polyisobutylene succinimide dispersant after filtration. The polyisobutylene succinimide dispersant is prepared by using polyisobutylene maleic anhydride and aminobenzene boronic acid, the molecular structure of the polyisobutylene succinimide dispersant contains not only an aromatic ring but also an oxygen-containing benzene boronic acid group, the aromatic ring and the benzene boronic acid group both have a good adsorption effect on soot particles, and the ability of the polyisobutylene succinimide dispersant to disperse soot is improved. The performance test results show that the oil product prepared by using the polyisobutylene succinimide dispersant of the application not only improves the soot dispersion performance of the oil product, but also improves the high-temperature detergency of the oil product, and the preparation process is simple and easy to implement.

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 technical field of emulsion explosives, and particularly discloses a formula and a preparation method of an underground mine blasting mixed emulsion explosive. The underground mine blasting mixed emulsion explosive comprises the following components in percentage by mass: 73-78% of ammonium nitrate, 3-5% of sodium nitrate, 0.2-0.4% of thiourea, 2-5% of an oil phase component, 1-3% of a compound emulsifier, 0.3-0.5% of a sensitizer, 0.8-1.5% of hollow glass balls and the balance of water, the compound emulsifier is composed of sorbitan monooleate, polyisobutylene succinimide and soya bean lecithin, and the sensitizer is composed of ethanolamine nitrate and phosphoric acid; according to the invention, by optimizing the proportion of each component, adopting an efficient emulsification process under a mild condition and synergistically optimizing each component, the product has good explosion performance and safety and can adapt to different mine environments, meanwhile, the stability of the emulsion explosive in a low-temperature environment is ensured, and the problem of miss-fire explosion in winter is effectively overcome.

This invention belongs to the field of coolant technology, specifically relating to a coolant and its application in an immersion liquid-cooled energy storage system. The coolant, by weight, comprises 80-95 parts base oil, 1-5 parts thermally conductive nanoparticles, 0.5-2 parts composite dispersant, 0.3-1 part composite corrosion inhibitor, 0.1-0.5 parts antioxidant, 0.2-0.5 parts pour point depressant, and 0.01-0.05 parts defoamer. The base oil is a mixture of polyalphaolefin and synthetic ester, and the composite dispersant is a compound of polyisobutylene succinimide and Mannich base dispersant. Aging tests show that this coolant exhibits high thermal conductivity retention, low acid value increase, and low corrosion rate. The coolant of this invention can effectively maintain the dispersion stability of nanoparticles in the environment of precipitates from sealing materials, extending the fluid change cycle.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

The invention discloses an extreme pressure anti-wear gear oil composite additive and a processing method thereof, and relates to the technical field of gear oil composite additives, and the extreme pressure anti-wear gear oil composite additive comprises the following components: 15-25% of sulfurized isobutylene, 10-20% of zinc dialkyl dithiophosphate, 8-15% of polyisobutylene succinimide, 5-12% of mahogany petroleum sulfonate, 5-12% of 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate, 5-12% of 2, 3, 5-trimethyl-1, 3- According to the invention, through scientific compounding of core functional components, synergistic interaction of extreme pressure and anti-wear performance is realized, the defect that performance of a single additive is poor is effectively overcome, the anti-wear performance of the lubricating oil is greatly improved, the service life of the lubricating oil is prolonged, and the service life of the lubricating oil is prolonged. The product can be precisely adapted to different application scenes such as heavy-load engineering machinery, high-speed precise gear transmission systems and mining machinery, can form a stable lubricating protective film under harsh working conditions, resists the failure problems such as abrasion, scratch and sintering of a gear contact surface, is high in adaptability, does not need to additionally adjust a formula according to the working conditions, and is low in cost. The lubricating protection requirements of various gear transmission devices can be met, and the application range is wide.

The application relates to the technical field of light-adjusting films, and particularly discloses a low-voltage-driven intelligent dynamic light-adjusting film and a preparation method thereof. The low-voltage-driven intelligent dynamic light-adjusting film comprises a transparent substrate, a transparent electrode and an electrophoretic medium layer, the transparent electrode is plated on one side of the transparent substrate, the transparent electrode is bonded with the electrophoretic medium layer through an adhesive, and the components of the electrophoretic medium layer include electrophoretic particle microcapsules and a binder. The electrophoretic particle microcapsules are used for storing an internal phase, the components of the internal phase include electrophoretic particles, a charge control agent, a stabilizer and a dispersed mobile phase, and the components of the stabilizer include polyisobutylene succinimide. The polyisobutylene succinimide is used for increasing the steric hindrance of the inner surface of the capsule wall, hindering the agglomeration of the electrophoretic particles on the inner surface of the capsule wall, and increasing the light transmittance adjustment range of the light-adjusting film under low-voltage driving.

The present invention provides a gasoline engine lubricating oil composition comprising the following components: (A) an organophosphorus compound, accounting for 0.05% to 10% of the total mass of the composition; (B) an alkyldiphenylamine, accounting for 0.05% to 5% of the total mass of the composition; (C) polyisobutylene succinimide, accounting for 2% to 30% of the total mass of the composition; (D) a sulfonate and / or a sulfurized alkylphenol, accounting for 0.2% to 10% of the total mass of the composition; (E) a zinc dialkyl dithiophosphate, accounting for 0.2% to 10% of the total mass of the composition; (F) an organomolybdenum, accounting for 0.05% to 5% of the total mass of the composition; (G) an ethylene-propylene copolymer, accounting for 2% to 30% of the total mass of the composition; and (H) a major amount of a lubricating oil base oil. The structure of the organophosphorus compound is described in the specification. The gasoline engine lubricating oil composition of the present invention has excellent anti-wear, friction-reducing, antioxidant, and detergency properties, and can inhibit the formation of deposits in turbochargers.

The invention discloses a cooling liquid, which is prepared from the following ingredients in percentage by mass: 89 to 98 percent of low-viscosity poly-alpha olefin, 1 to 8 percent of high-viscosity poly-alpha olefin, 0.01 to 0.5 percent of modified nanometer insulating heat-conducting fluid, 0.2 to 2.5 percent of alkyl naphthalene, 0.01 to 0.5 percent of antioxidants and 0.03 to 0.06 percent of anti-foaming agents. The preparation method of the modified nano insulating heat-conducting fluid comprises the following steps: S1, uniformly stirring the polyisobutylene succinimide dispersing agent, the sulfurized alkylphenate and the antioxidant to obtain a mixture; and S2, adding nano solid particles into the mixture, and carrying out ultrasonic dispersion. According to the cooling liquid and the preparation method and application thereof, the modified nano insulating heat-conducting fluid, the antioxidant, the anti-foaming agent and the like are added into the poly-alpha-olefin, so that the immersed cooling liquid which is good in stability and capable of prolonging the service life and improving the heat transfer and heat conduction performance is formed.

The present invention relates to the use of a fuel composition for reducing deposits in internal parts of a spark ignition engine, the fuel composition comprising at least three additives: a quaternary ammonium salt, a non-quaternary polyisobutylene succinimide, and a Mannich base different from the other additives. The composition is such that the mass ratio of the amount of the first additive to the amount of the second additive is in the range of 0.2:1 to 2.5:1.

This application relates to the field of protective films. More specifically, it relates to a nylon moisture retention film and a preparation method thereof. It is composed of the following raw materials in percentage by weight: 40-63% of nylon, 10-30% of PP, 10-20% of PHA, 0.5-2% of cooling masterbatch, 3-8% of maleic anhydride grafted product, 0.3-1% of polyisobutylene succinimide, 1-8% of nano-inorganic filler, and the balance is processing aids. In this application, the combination of nylon, PP, and PHA can integrate their properties, resulting in better mechanical properties and barrier properties against water vapor and the like. In addition, through the interaction of the maleic anhydride grafted product, polyisobutylene succinimide, and cooling masterbatch, the mixing uniformity between nylon, PP, and PHA is further improved. Moreover, the maleic anhydride grafted product and polyisobutylene succinimide promote the compatibility of the nano-inorganic filler in the raw material system, further improving the moisture retention performance and mechanical properties.

The present invention provides a diesel engine oil composition comprising an organophosphorus compound, a boronated polyisobutylene succinimide dispersant, an amine antioxidant, a detergent, a zinc dialkyl dithiophosphate, a viscosity index improver, and a major amount of a lubricating base oil. The organophosphorus compound has a structure as shown in Formula (I): #imgabs0# In Formula (I), at least one A group is selected from the group represented by Formula (II), the group represented by Formula (III), or the group represented by Formula (IV); #imgabs1# where the definitions of each group are as described in the specification. The diesel engine oil composition of the present invention exhibits excellent high-temperature antioxidant properties, high-temperature detergency, anti-wear properties, and anti-corrosion properties, meeting the requirements of high-performance diesel engine lubricants.

The invention relates to the technical field of polymer materials, and discloses a dustproof and sweatproof functional material for a Bluetooth headset shell and a preparation method thereof. The functional material consists of polypropylene, maleic anhydride grafted polypropylene, a composite modifier, an inorganic modified additive, an antioxidant, a lubricant, and a colorant; wherein the composite modifier contains a large amount of C-F bonds and siloxane bonds in its structure, so that the prepared functional material has extremely low surface energy, and can effectively improve the sweatproof performance of the Bluetooth headset shell; the inorganic modified additive is prepared by grafting polyisobutylene succinimide onto the surface of carbon fiber, and can interact with a matrix to improve the antistatic performance and mechanical properties of the material, and the improvement of these properties not only improves the protective performance of the Bluetooth headset, but also brings a better use experience to users.

The invention discloses an ashless dispersant as well as a preparation method and application thereof. The ashless dispersant is a compound prepared by carrying out Mannich reaction on a multifunctional polar cross-linking agent A containing multiple reaction sites, the single-hanging aliphatic amine type polyisobutylene succinimide B and / or the single-hanging polyether amine type polyisobutylene succinimide C and a paraformaldehyde compound D. The preparation method comprises the following steps: carrying out Mannich reaction on the multifunctional polar cross-linking agent A, the single-hanging aliphatic amine type polyisobutylene succinimide B and / or the single-hanging polyether amine type polyisobutylene succinimide C and the paraformaldehyde compound D to obtain the ashless dispersant. The ashless dispersant prepared by the preparation method disclosed by the invention is integrally of a star-shaped structure, and the dispersant has stronger suspension capacity in an oil product due to a multi-point-position grafted polyisobutene olefin chain; in addition, the ashless dispersant prepared by the invention has excellent dispersing performance, oxidation resistance and high-temperature detergency, and has excellent storage stability after being blended into an oil product.

This invention relates to the field of lubricant technology, specifically to a lubricant for agricultural machinery and its preparation method. This agricultural machinery lubricant, by weight, comprises the following components: 85-93 parts of a first base oil, 2.0-3.0 parts of 1,3-bis(3-phenoxyphenoxy)benzene, 0.2-0.3 parts of zinc dialkyl dithiophosphate, 0.5-1.0 parts of a graphene-based anti-wear additive, 2.0-4.0 parts of polyisobutylene succinimide, 0.5-1.5 parts of a hindered phenolic antioxidant, 1.5-3.0 parts of hydrogenated styrene-isoprene copolymer, and 0.2-0.6 parts of polymethacrylate; wherein the first base oil comprises poly(α-olefin) PAO4 and paraffin oil in a weight ratio of 2-3:1. The agricultural machinery lubricant provided by this invention improves the anti-wear and friction-reducing properties of the graphene-based anti-wear additive, and enhances the stable dispersibility of functionalized graphene in the oil phase and its interfacial properties with the oil phase.

The invention provides a four-stroke unmanned aerial vehicle engine lubricating oil composition. The four-stroke unmanned aerial vehicle engine lubricating oil composition comprises phosphate salt, polyisobutylene succinimide, sulfonate, alkyl diphenylamine, a hydrogenated styrene-isoprene copolymer and a main amount of lubricating oil base oil. Wherein the structure of the phosphate salt is shown in the specification. The four-stroke unmanned aerial vehicle engine lubricating oil composition provided by the invention has excellent wear resistance and oxidation resistance.

The invention relates to the technical field of photovoltaic devices, in particular to a method for preparing a perovskite solar cell based on an ex-situ method. According to the invention, the prepared MAPbI3 microcrystals are dispersed in an anti-solvent anisole by using a ball milling method, and a dispersion system is more uniform under the action of a dispersant T151 (polyisobutylene succinimide), so that the compactness of the film is improved. On the basis, the microcrystal film is subjected to different post-treatment methods such as a precursor solution and hot pressing to improve the film quality. Wherein the precursor solution post-treatment is mainly characterized in that under the action of a solvent, microcrystals on the surface are dissolved and recrystallized to fill gaps among crystal grains, so that the compactness of the thin film is improved. And the hot-pressing post-treatment can further improve the roughness of the film and reduce the thickness of the film, so that the transmission of carriers is promoted, and the efficiency of the device is obviously improved.

The invention discloses wear-resistant modified graphene lubricating oil and a preparation method thereof, and belongs to the technical field of lubricating oil, the wear-resistant modified graphene lubricating oil comprises the following raw materials: alkyl naphthalene base oil, sodium stearate, an antioxidant 5057, an organic silicon defoamer, polyisobutylene succinimide and a wear-resistant modified graphene additive; gamma-glycidyl ether oxypropyl trimethoxy silane is used for modifying graphene oxide in advance, accumulation between graphene sheet layers can be effectively prevented, agglomeration is avoided, then reduction is performed through vitamin C, residual oxygen-containing functional groups are removed, a conjugated structure is recovered, epoxy groups are reserved, and different from traditional hydrothermal synthesis, the preparation method has the advantages that the preparation method is simple, and the preparation cost is low. The graphene oxide and the carbon quantum dots only have physical adsorption, so that the graphene oxide and the carbon quantum dots can be prevented from falling off in high-pressure, strong-shearing-force and local high-temperature environments in the friction process, and the antifriction effect can be stably exerted for a long time.

The present invention provides a heavy-duty gas engine lubricating oil composition comprising an organophosphorus compound, a polyisobutylene succinimide ashless dispersant, an amine antioxidant, a detergent, a zinc dialkyl dithiophosphate, a viscosity index improver, a pour point depressant, and a major amount of a lubricating base oil. The organophosphorus compound has a structure as shown in Formula (I): #imgabs0# In Formula (I), at least one A group is selected from the group represented by Formula (II), the group represented by Formula (III), or the group represented by Formula (IV); #imgabs1# where the definitions of each group are as described in the specification. The gas engine lubricating oil composition of the present invention exhibits excellent high-temperature antioxidant, high-temperature detergency, anti-wear, and dispersancy properties, meeting the requirements of high-performance gas engine lubricants.

The invention discloses a stabilizer for fuel oil containing ethylene tar and a preparation process of the stabilizer, and belongs to the technical field of energy and chemical industry. The stabilizer is composed of 8-20% of a composite antioxidant, 20-25% of a nano-scale dispersant, 5-8% of a metal deactivator, 10-15% of a viscosity modifier and 20-50% of a solvent, the composite antioxidant is compounded by alkylated diphenylamine and D-tocopherol according to a ratio of 3: 1, the nano-scale dispersant is prepared by loading polyisobutylene succinimide on a silane coupling agent modified nano-silica carrier, and the viscosity modifier is a silane coupling agent modified nano-silica carrier. The metal passivator is selected from six specific benzotriazole derivatives. According to the preparation method, the synergistic interaction of the components is realized through the processes of nano-carrier surface modification, dispersing agent in-situ loading, antioxidant system compounding, high-pressure homogenization treatment and the like. Through innovative formula design and process optimization, the problems of storage deterioration, metal catalytic deterioration and viscosity regulation of ethylene tar fuel oil are solved, and the method has important industrial application value.

The invention discloses polyisobutylene succinimide betaine, a fuel additive and a preparation method of the polyisobutylene succinimide betaine and the fuel additive. The structural formula of the polyisobutylene succinimide betaine is as follows: # imgabs0 #, PIB is a polyisobutylene group, and the molecular weight of the PIB is 400-4900; m is equal to 1-18, preferably, m is equal to 1-10; n = 2-5, preferably n = 2 or 3. The fuel additive disclosed by the invention is good in solubility, not only has good dispersity and an effect of reducing the accumulation amount of carbon deposition of a vehicle engine, but also can effectively reduce the balance point temperature, solve the problem of passive regeneration failure of a diesel engine particulate filter (DPF), reduce the number of active regeneration times and prolong the regeneration mileage.

The invention relates to the field of metal heat treatment quenching oil, and discloses cooling speed stable type overspeed quenching oil and a preparation method thereof. The cooling speed stable type overspeed quenching oil is prepared from the following raw materials in parts by weight: 85-95 parts of base oil, 2-4 parts of a cooling accelerant, 2-3 parts of a stabilizer, 1-3 parts of a dispersing agent, 0.5-1.5 parts of an antioxidant and 0.5-1 part of a brightener, the stabilizer is composed of ricinoleic acid polyester and polyalkyl methacrylate, and the dispersing agent is composed of stearoyl methacrylate and polyisobutylene succinimide. The overspeed quenching oil is used under the conditions of long-term high temperature and the like, has better quenching cooling stability, is not easy to deteriorate, and is suitable for industrial continuous heat treatment operation.

The present invention belongs to the technical field of gearbox oil preparation, and specifically relates to a gearbox oil and a preparation method thereof. The gearbox oil is composed of the following raw materials: sodium O,O'-diisopentyl dithiophosphate, octyl acidic phosphate octadecylamine, 4,4'-methylenebis(2,6-di-tert-butylphenol), dialkyldithiocarbamate, triethanolamine borate ester, methylbenzotriazole, 2-butyl acrylate homopolymer, hydrogenated styrene diene copolymer, borated polyisobutylene succinimide, and the balance is base oil. The base oil is composed of ditrimethylolpropane tetraester, poly-α-olefin, palm oil, 1-n-butylnaphthalene, and dodecylphenol. For the gearbox oil of the present invention, the raw materials act synergistically, so that the prepared gearbox oil has good oxidation stability, corrosion resistance, and anti-wear properties.

The invention belongs to the technical field of lubricating grease, and discloses a lubricating grease composition and a preparation method thereof, the lubricating grease composition contains base oil, modified graphene and a thickening agent; the modified graphene is prepared by carrying out ball milling on graphene and polyisobutylene succinimide in the presence of supercritical carbon dioxide; relative to 100 parts by weight of the base oil, the content of the modified graphene is 0.005-5 parts by weight. The lubricating grease composition provided by the invention has good stability, lubricity and extreme pressure property.

This invention discloses a high-temperature resistant and sun-protective coating for tea trays. The coating technology field includes the coating body and fillers. The coating body comprises the following components: water-based epoxy resin, methyl hexahydrophthalic anhydride, anhydrous sodium sulfate, polyisobutylene succinimide, and allyl polyoxyethylene ether. The fillers comprise the following components: nano-aluminum hydroxide, nano-titanium dioxide, spiral carbon nanotubes, nano-zirconium powder, pyroxene, and potassium hexatitanate whiskers. Tea trays coated with this coating form a high-strength coating on their surface, exhibiting high-temperature and sun-resistant properties.