1787results about "Additives" patented technology

The present invention provides a soluble cold rolling oil composition in which oil particles of approximately 0.1 μm or less are dispersed in water, and which has rolling properties (particularly anti-seizure properties) equal to or better than those of water-insoluble rolling oils and emulsion-type rolling oils, while enabling the gloss of products to be made uniform and enabling an improvement in unit consumption compared to emulsion-type rolling oils; and a cold rolling method using the composition. [Solution] A cold rolling oil composition containing (A) a base oil, (B) a specific fatty acid, (C) a specific sulfur-based extreme pressure agent, (D) a specific water-soluble polymer, and (E) a specific amine, and a cold rolling method using the same.

The invention provides high-temperature-resistant, mute and long-life bearing lubricating grease and a preparation method of the high-temperature-resistant, mute and long-life bearing lubricating grease, and belongs to the technical field of lubricating materials. The composite additive comprises a special antioxidant, a special anti-wear reagent at extreme pressure, an anti-rust preservative, a microencapsulation self-repairing agent and a noise inhibitor, and a rare earth organic complex can be further introduced as a high-temperature stabilizer according to needs, so that multi-performance synergy is realized. The comprehensive adaptability of the lubricating grease under the high-temperature-resistant condition is remarkably improved, the service life of a bearing is prolonged, energy consumption and noise are reduced, and the lubricating grease has outstanding technical advancement and application and popularization value.

The invention relates to the field of preparation of lubricating materials, in particular to a preparation method of composite phase change lubricating gel based on temperature-friction force synergistic response. The lubricating gel adopts a sandwich layered structure; the bottom layer is a porous ceramic layer formed by micro-arc oxidation, is filled with a disulfide bond dynamic network polymer and is anchored on a metal substrate; the middle layer comprises a microencapsulated phase change material which is dispersed in a polyurethane network containing dynamic disulfide bonds and is wetted with ionic liquid; the surface layer is an epoxy resin coating rich in boron nitride nanosheets, and a rapid heat conduction channel is constructed. Compared with the prior art, the lubricating state can be automatically adjusted in the friction process without external energy input, and the method has the advantages of being sensitive in multi-field coupling response, capable of achieving automatic antifriction protection, high in extreme working condition adaptability and the like.

The invention discloses hydrolysis-resistant liquid phosphite ester and a preparation method and application thereof.The hydrolysis-resistant liquid phosphite ester is prepared by the steps that 2, 2, 4-trimethyl-1, 3-pentanediol and phosphorus trichloride or phosphite triester serve as raw materials, a cyclization reaction is conducted firstly, and then the hydrolysis-resistant liquid phosphite ester is obtained; and then carrying out nucleophilic substitution on Cl or aryl and alkyl on the cyclized intermediate by using higher saturated monohydric alcohol with more than C8, wherein the molecular structure is as shown in formula I in the specification. The liquid phosphite ester is novel liquid phosphite ester, the main body of the liquid phosphite ester is of a six-membered ring structure, the basic structure of the phosphite ester is reserved to the maximum extent, and the anti-oxidation effect of the phosphite ester is guaranteed; hydrophobic aliphatic chain structures on phosphorus atoms and branched chains of the phosphorus atoms prevent water molecules from approaching P-O bonds, so that the phosphorus atoms and the branched chains are prevented from being attacked by the water molecules, and the hydrolysis resistance is improved under the conditions that any additional amine hydrolysis-resistant agent is not used and any steric hindrance group is not introduced; good practical value, economic value and market prospect are realized.

The present disclosure provides a drag reducing agent. In an embodiment, the drag reducing agent includes a polymer and a liquid carrier. The polymer is composed of one or more C6-C14 α-olefin monomers. The polymer includes a residual amount of zirconium. The polymer has an absolute weight average molecular weight (Mw(Abs)) greater than 1,300,000 g / mol and a (Mw(Abs) / Mn(Abs) from 1.3 to 3.0.

The invention relates to the technical field of power cables, in particular to antirust cable accessory insulation lubricating grease and a preparation method thereof.The antirust cable accessory insulation lubricating grease is prepared from, by weight, 100 parts of base oil, 8-25 parts of modified fumed silica, 0.01-3 parts of extreme pressure anti-wear agent and 0.1-1 part of antioxidant. According to the invention, a benzotriazole corrosion inhibition group and a diphenyl silane insulation barrier are synchronously constructed on the surface of fumed silica, so that integration of dual functions is realized. A triazole ring of benzotriazole is directionally exposed on the surface of the filler, a compact passivation film is formed through coordination of lone pair electrons and metal atoms, and an electrochemical corrosion path is blocked from the molecular level; and a rigid aromatic ring of diphenyl silane inhibits electron migration through a steric hindrance effect to form a high-energy barrier insulating layer. The two are stably combined through siloxane covalent bonds, so that the performance conflict caused by phase separation of an antirust agent and an insulating agent in a traditional physical mixing process is solved, and the lubricating grease is endowed with long-acting synergistic protection capability.

The invention relates to the technical field of graphene modification, and particularly discloses a preparation method of zinc borate modified graphene, which comprises the following steps: ultrasonically dispersing graphene in water to obtain 0.5-1g / L graphene dispersion liquid; adding a dispersing agent, a 0.08-0.12 mol / L borax aqueous solution and ethanol into the graphene dispersion liquid, uniformly mixing, and then dropwise adding a 0.08-0.12 mol / L zinc sulfate aqueous solution under the stirring action; then carrying out a reaction through microwave heating at the temperature of 50-70 DEG C under the power of 100-300 W for 20-30 min; after the reaction is finished, filtering, washing and drying to obtain zinc borate modified graphene. According to the preparation method of the zinc borate modified graphene, provided by the invention, a uniform, complete and compact shell layer can be formed on the surface of the graphene through in-situ self-assembly, so that the surface of the graphene is textured, and the dispersion uniformity and dispersion stability of the graphene in an oil phase system are improved.

To provide a thermally conductive grease composition which has high thermal conductivity, has excellent coatability, and allows a temperature distribution to be visually recognized.SOLUTION: A thermally conductive grease composition containing a base oil, a thermally conductive filler, and a capsule pigment encapsulating a leuco dye, a developer, and a color change temperature regulator.SELECTED DRAWING: None

The invention relates to a bio-based sulfur-phosphorus-free nitrogen-containing borate organic molybdenum antifriction agent and a preparation method and application thereof.The preparation method comprises the following steps that A1, monoglyceride and boric acid are dissolved in methylbenzene and subjected to a heating reaction, triethanolamine is added, the reaction continues, and OBN is obtained; a2, OBN and MoO3 obtained in the step A1 are dissolved in methylbenzene, a heating reaction is conducted in the inert atmosphere, and OBN-Mo is obtained; or B1, dissolving monoglyceride and boric acid in toluene, carrying out a heating reaction, adding triethanolamine, and continuing the reaction to obtain OBN; b2, the OBN obtained in the step B1 and molybdenum acetylacetonate are subjected to a heating reaction in ethyl alcohol, and OBN-Mo-OBN is obtained. Compared with the prior art, the two bio-based sulfur and phosphorus-free nitrogen-containing borate organic molybdenum antifriction agents OBN-Mo and OBN-Mo-OBN can be compounded with ZDDP to prepare lubricating oil, so that the wear resistance of the lubricating oil has a synergistic interaction effect.

There has been a need for a novel lubricating oil composition which has characteristics (for example, scuffing resistance and copper corrosion resistance) that are suitable for lubrication of various mechanisms that are incorporated in a device. The present invention provides a lubricating oil composition which contains (A) a base oil and (B) a phosphite ester that has at least one sulfur atom-containing group having 2 to 20 carbon atoms, the group having at least one —(S) x- group (wherein x is an integer of 1 or more) between two adjacent carbon atoms in the structure of an alkyl group, wherein: the content of a thiadiazole compound is less than 0.05% by mass based on the total amount of the lubricating oil composition; and the kinematic viscosity of the lubricating oil composition at 100° C. is 4.2 mm2 / s or more.

The invention discloses a wafer cutting protection liquid composition, and belongs to the field of wet electronic chemicals. The composition comprises the following components in percentage by mass: 0.1-5% of a wetting agent, 0.1-2% of a penetrating agent, 0.1-2% of a dispersing agent, 0.1-2% of a pH regulator, 0.1-2% of a nonionic Gemini surfactant and the balance of water, wherein the sum of the mass percentages is 100%. The nonionic Gemini surfactant used in the invention has excellent wettability and permeability, can effectively reduce surface tension at low concentration, does not introduce foreign ions, is easy to rinse, has no residue, and can improve the cleaning ability to particles. The composition prepared from the cutting fluid has good cooling and lubricating effects, has no obvious foam, does not corrode metal to damage an electrode, can protect a wafer from being damaged during cutting, prevents fragments and pollution, is low in irritation and environment-friendly, and meets the environment-friendly requirement.

The invention discloses a synthetic method of a lubricating oil detergent. The synthesis method is characterized by comprising the following steps: mixing sulfurized alkylphenate with a solvent to form a uniform mixture; a peroxide is added to the uniform mixture, and the addition amount of the peroxide is 0.005-0.20 parts by mass relative to 1 part by mass of the sulfurized alkylphenate; reacting for 3-8 hours at the temperature of 50-200 DEG C; and after the reaction is finished, filtering and distilling to remove the solvent to obtain the sulfurized alkylphenol salt with reduced content of free alkylphenol. The lubricating oil detergent obtained by the synthetic method of the lubricating oil detergent is low in free alkylphenol content, and the product performance is improved.

The invention discloses an ionic liquid modified conductive two-dimensional material (at) MoS2 lubricating additive and a preparation method and application thereof.The lubricating additive is characterized in that after amination modification is conducted on a conductive two-dimensional material with a few nanosheet layer surfaces containing hydroxyl, the conductive two-dimensional material reacts with a Mo source, MoS2 nanosheets evenly grow on the surface of the conductive two-dimensional material, and a core-shell composite structure is formed; the-S-S-bond of the lipoic acid ionic liquid is combined with the S vacancy in the MoS2 to obtain the MoS2 / S composite material. The ionic liquid modified Ti3C2Tx and MoS2 conductive polyurea lubricating grease prepared from the lubricating additive shows good antifriction and antiwear effects, and compared with a contrast, the friction coefficient is reduced by 51.0%, and the wear volume is reduced by 99.1%. Moreover, in a bearing electric corrosion test, the SSIL-Ti < 3 > C < 2 > T < x > (at) MoS2 nano additive shows a good electric corrosion inhibition effect.

The invention provides a nitrogen-containing boric acid ester-nano hybrid composite anti-wear additive as well as a preparation method and application thereof, and belongs to the technical field of lubricating oil additives. The nitrogen-containing boric acid ester, the functionalized nanoparticles, the ionic liquid, the auxiliary anti-wear agent and the dispersion stabilizer are subjected to nano-scale hybrid compounding, and the nitrogen-containing boric acid ester, the functionalized nanoparticles, the ionic liquid, the auxiliary anti-wear agent and the dispersion stabilizer have a synergistic effect on four aspects of physical bearing, chemical adsorption, interface modification and extreme pressure enhancement; a multi-synergistic lubrication and protection system of an adsorption film, a physical isolation layer, an extreme pressure reaction layer and rolling lubrication microspheres is constructed, efficient wear resistance, friction reduction, bearing and stability improvement are jointly achieved, and the lubricating oil is suitable for insoluble base oil.

The present invention provides a grease composition and an axle bearing in which the grease composition is sealed.SOLUTION: The grease composition of the present invention contains a base oil, a thickener, and an additive, the additive contains an organic metal salt of a divalent metal and an inorganic metal salt of a divalent metal, the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 1.00% by mass or more based on the grease composition, and the metal content of the organic metal salt with respect to the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 0.20 or more on a mass basis.SELECTED DRAWING: None

This lubricating oil composition contains a lubricating oil base oil (X), a diphenylamine-based antioxidant (A), a naphthylamine-based antioxidant (B), and a phosphorus-containing phenol-based antioxidant (C). The lubricating oil base oil (X) satisfies requirements (1)-(4). · Requirement (1): Having a viscosity index of 120 or more. · Requirement (2): Having a %CP of 85 or more as determined through ring analysis (n-d-M method). · Requirement (3): Having a density, at 15°C, of 0.835 g / cm3 or less. · Requirement (4): Having a kinematic viscosity, at 40°C, of 28.8 mm2 / s or more.　The content ratio [(B) / (A)] of the naphthylamine-based antioxidant (B) to the diphenylamine-based antioxidant (A) is 2.0 or more in mass ratio. The content ratio [(C) / (B)] of the phosphorus-containing phenol-based antioxidant (C) to the naphthylamine-based antioxidant (B) is 0.15 or less in mass ratio.

Electrosurgical lubricants, sterilized kits including the lubricants, methods for using the lubricants, and methods for preparing sterilized kits having the lubricants therein. Electrosurgical devices utilize a high frequency electrical current to cut and to coagulate tissue during surgery. A problem of the electrosurgical devices is that the heat thereof causes tissue, such as that of a human being, to remain on the device and is generally difficult to remove, even with repeated washings. The electrosurgical lubricants have been found to considerably reduce the amount of eschar that builds up on electrosurgical devices, decrease the tendency of electrodes to stick to tissues at the surgical site, and prevent damage to the surface of the electrosurgical device.

The invention discloses a water-resistant molybdenum disulfide additive for lubricating grease, and belongs to the technical field of lubricating materials. The water-resistant molybdenum disulfide additive for the lubricating grease is hydrophobic mesoporous silica composite molybdenum disulfide, and a preparation method of the water-resistant molybdenum disulfide additive comprises the following steps: firstly, generating nano mesoporous silica on the surface of a molybdenum disulfide nanosheet in situ through a sol-gel method, namely, forming mesoporous silica composite molybdenum disulfide; then carrying out oleic acid modification on the mesoporous silica composite molybdenum disulfide to obtain hydrophobic mesoporous silica composite molybdenum disulfide; compared with a mixture of molybdenum disulfide, mesoporous silica and molybdenum disulfide, the hydrophobic mesoporous silica composite molybdenum disulfide is added into the composite calcium sulfonate-based lubricating grease, so that the temperature resistance, water spray resistance, extreme pressure property and lubricating property of the composite calcium sulfonate-based lubricating grease can be remarkably improved.

The object of the invention is a method for the production of lithium complex soap lubricating greases or lithium-calcium complex soap lubricating greases and corresponding lubricating greases produced by this process and their use in slide and rolling bearings.

Provided herein is a lubricant composition suitable for use in electric vehicles that includes a traction coefficient additive. The lubricant composition provides utility as an electric vehicle gear oil, particularly an electric vehicle transmission fluid. The lubricant composition provides improved traction coefficient properties in use compared to a comparable lubricant composition that does not include the traction coefficient additive.

Provided is a grease composition containing a base oil (A), hydrophilic nanofibers (B) having a roughness (d) of 1 nm to 500 nm, and particles (C) having a structure in which the hydrophilic nanofibers (B) are one or more types selected from the group consisting of cellulose nanofibers (B1) and modified cellulose nanofibers (B2), the particles (C) having a hydrophobic group on the outermost surface of the hydrophilic matrix structure, and having a hydrophobic group on the outermost surface of the hydrophilic matrix structure. In the grease composition, the average particle diameter of the particles (C) is 1 nm to 500 nm, and the grease composition has an appropriate oil separation degree and excellent water resistance despite the use of hydrophilic nanofibers.

Bicycle chain lubricant comprising base oil, a tackifier, and an anti-wear additive being either zinc dialkyl dithiophosphates (ZnDTP), molybdenum dithiocarbamates (MoDTC), or a mixture of both. The b

A water-based rust inhibiting agent according to the present disclosure contains a carboxylate, a sorbitan-based surfactant, a silane coupling agent having an epoxy group or a glycol group, and an aqueous medium.

The invention provides a bifunctional ionic liquid monomer, an ionic multifunctional viscosity index improver as well as a preparation method and application of the ionic multifunctional viscosity index improver, and belongs to the technical field of lubricating additives. A series of bifunctional ionic liquid monomers are synthesized through molecular design and have the functions of antifriction, wear resistance and cross-linking agents, then the monomers are copolymerized with long-chain alkyl methacrylate, and the ionic multifunctional viscosity index improver is prepared. The molecular structure of the viscosity index agent simultaneously contains an oleophylic alkyl chain, a rigid benzene ring structure and an ionic functional group, so that the solubility, the viscosity increasing performance and the viscosity-temperature performance of the viscosity index agent in base oil are remarkably improved; a biquaternary ammonium salt structure is introduced into a main chain to realize crosslinking of the polyion liquid, so that the tackifying performance of the polyion liquid is improved, phosphorus, sulfur and nitrogen heteroatoms are introduced, physical and chemical adsorption films can be formed on the metal surface, the friction coefficient and the abrasion volume are effectively reduced in the friction process, and the boundary lubricating performance is enhanced.

A lithium-based grease and the preparation method thereof are provided. The raw materials for preparing the lithium-based grease include in parts by weight: 75-88 parts of base oil, 0.5-2.5 parts of antiwear agent, 0.1-1.5 parts of antirust agent, 0.1-1.5 parts of antioxidant, 5-25 parts of lubricant, 5-15 parts of thickening agent, and 0.6-2.0 parts of saponifying agent. The raw materials also include hydroxyl compound-containing modified graphene containing quaternary ammonium salt or aromatic ring. The grease has good colloid stability and mechanical stability, can greatly improve the antiwear property. More than that, the grease has excellent oxidation resistance, and can significantly shorten the reaction time of the saponification, reduce the reaction temperature of the saponification.

A lubricating oil composition is disclosed. The composition includes a major amount of an oil of lubricating viscosity and one or more dispersant friction modifiers given by Structure A, (I). R1, and R3 are independently a linear or branched-chain monovalent hydrocarbyl radical of 4 to 100 carbon atoms; x is from 1 to 3; and y is from 1 to 3; R2 is a linear or branched-chain monovalent hydrocarbyl radical of 4 to 100 carbon atoms or hydrogen; and at least one of R1, R2, and R3 is a polyisobutenyl group having a molecular weight of 500 or greater.

Provided is an antifoaming agent that exhibits excellent defoaming properties even in a high-temperature environment. -[OSi(R)2] x -(R is independently an alkyl group having 1 to 6 carbon atoms each. x is the number of repetitions.) A polymerizable monomer (a1) having a polysiloxane structure represented by and / or -Si[OSi(R)3] n [R’] 3-n (n is an integer from 1 to 3. R is independently an alkyl group having 1 to 6 carbon atoms each. R’ is independently an alkyl group having 1 to 6 carbon atoms each) An antifoaming agent containing a polymer having at least a polymerizable monomer (A) as a polymerizable component, which is a polymerizable monomer (a2) having a functional group represented by and having two or more polymerizable unsaturated groups.

Disclosed are an additive for a thermal management fluid, the additive including a phosphate-based compound wherein the phosphate-based compound satisfies Chemical Formula 1, wherein the R groups in Chemical Formula 1 are each independently hydrogen or a functional group comprising 1 to 10 carbon atoms, and a thermal management fluid composition including the same.

To provide a lubricating composition that can improve wear resistance in sliding parts of drive units or the like.SOLUTION: The present invention is a lubricating composition comprising P, wherein an analysis spectrum of 31P-NMR obtained in 1H complete decoupling mode satisfies the following conditions. Specifically, peaks are present in the vicinity of 3.5 ppm where the chemical shift value is 3.1 to 3.7 ppm and in the vicinity of 0 ppm where the chemical shift value is 0 to 0.3 ppm. A first peak area ratio (A2 / A1), which is the ratio of the peak area (A2) in the vicinity of 0 ppm to the peak area (A1) in the vicinity of 3.5 ppm, is 0.18 to 0.8. A peak that may appear in the vicinity of 7 ppm where the chemical shift value is 6.5 to 7.5 ppm has a height of 0.1 times or less relative to the peak in the vicinity of 3.5 ppm.SELECTED DRAWING: Figure 5A