12results about How to "Good fluidity at low temperature" patented technology

This application belongs to the technical field of grouting materials for tunnel engineering, specifically relating to a grouting material suitable for tunnel rock strata reinforcement and its preparation method. It includes component A and component B; by weight, component A comprises: 75-85 parts of a first base material, 10-20 parts of a coupling agent, and 2-5 parts of a catalyst; component B comprises: 70-80 parts of a second base material and 15-25 parts of a modifying accelerator; wherein, the first base material is a water glass solution, and the physicochemical properties of the water glass solution meet the following conditions: modulus > 2.5, Baume degree < 40°Bé; the second base material is composed of isocyanate compounds and glycidyl etheroxypropyl cage-like polysilsesquioxane in a weight ratio of 100:(11-23); the modifying accelerator includes polyvinylpyrrolidone and dicarboxylic acid alkyl ester compounds. The two base materials synergistically cure at low temperature to form a highly cross-linked organic-inorganic composite network, thereby significantly improving the compressive strength of the solidified body.

The invention provides a random polymerized metallocene compound as well as a preparation method and application thereof. The random polymerized metallocene compound has a structure as shown in a formula I, wherein R is selected from H, benzene and derivatives thereof; x is selected from halogen, C1-C30 alkyl groups and derivatives thereof, C1-C6 alkoxy groups and derivatives thereof, C2-C30 dialkyl amino groups and derivatives thereof, and C2-C10 alkenyl groups and derivatives thereof; m is a transition metal element. The random polymerized metallocene compound is high in catalytic activity and is used for preparing high-viscosity mPAO base oil, and the prepared product has excellent low-temperature flowing property.

The present application relates to the technical field of lubricating oil, and particularly relates to a special lubricating oil composition for gear box of port machinery equipment and a preparation method thereof.The preparation method of the present application comprises the following steps: preparing a graphene oxide lubricating additive by using graphene oxide and part of base oil; stirring uniformly extreme pressure anti-wear agent, rust inhibitor, antioxidant, demulsifier, pour point depressant, viscosity index modifier and the remaining part of base oil, then adding the graphene oxide lubricating additive and anti-foaming agent, continuing to stir and mixing uniformly to obtain the special lubricating oil composition for gear box of port machinery equipment.The lubricating oil composition prepared by the preparation method of the present application has excellent load-carrying and anti-wear performance, unique anti-micro-pitting performance, excellent oxidation resistance, low-temperature fluidity and water separation performance and the like, and is suitable for gear box lubrication working under harsh working conditions such as heavy load, impact load and low-temperature environment.

The invention belongs to the technical field of engineering machinery hydraulic oil, and particularly relates to a hydraulic oil complexing agent, a preparation method and application, the hydraulic oil complexing agent comprises, by weight, 30-35% of an anti-oxidation, anti-corrosion and anti-wear additive, 15-18% of an antioxidant, 15-20% of an anti-wear agent, 20-25% of an anti-rust agent, 2-5% of a metal deactivator, 2-5% of a clearing agent and the balance diluent oil. The hydraulic oil complexing agent is used in excavator hydraulic oil with mineral oil content of less than 40%, and a proper amount of antioxidant, corrosion-resistant and wear-resistant additive and antioxidant are added into the hydraulic oil complexing agent, so that the oil change period of the hydraulic oil is prolonged, the phenomenon of over-wear of parts of a hydraulic system and a hydraulic oil pump of engineering mechanical equipment is avoided, and the service life of the hydraulic system is prolonged. The maintenance cost of the excavator is reduced, the problems of poor wear resistance, weak hydrolytic stability and short service life of hydraulic oil products for engineering machinery excavator customers are solved, the use efficiency of engineering machinery equipment is improved, and the service life of the engineering machinery equipment is prolonged.

The invention discloses a lubricating oil composition for a transmission system of a new energy electric vehicle. The lubricating oil composition comprises the following components in percentage by mass: 0.01-2% of an anti-wear agent; 0.01-2% of an antirust agent; 0.01-1% of a metal deactivator; 0-3% of a pour point depressant; the sum of the mass percentages of the components is 100%. The invention also discloses a preparation method of the lubricating oil composition, which specifically comprises the following steps: adding the anti-wear agent, the antirust agent, the metal deactivator and the pour point depressant into the base oil, and blending until the components are uniformly dissolved in the base oil. By expanding the side chain of BTTP, three siloxane structures are introduced, so that the BTTP has excellent solubility and better wear resistance in fluorine-containing silicone oil. Besides, the lubricating oil composition adopting a fluorosilicone oil base oil formula has good low-temperature fluidity, oxidation resistance and electrochemical performance, and can meet the requirements of lubrication and cooling of an oil-cooled motor reduction gearbox transmission system.

The invention discloses a preparation process of vegetable insulating oil with high oxidation stability, and belongs to the technical field of vegetable oil refining. The core of the process is as follows: firstly, taking palladium and nickel salts in a specific molar ratio as precursors, and combining with polyethylene glycol to prepare a palladium-nickel bimetallic catalyst loaded on alkaline carclazyte; then, vegetable oil is mixed with the catalyst and activated carbon, and hydrogen is introduced under mild vacuum and heating conditions for selective hydrogenation refining; and finally, adding an antioxidant and a pour point depressant into the refined oil to obtain a final product. Through the synergistic effect of the catalyst, extremely unstable linolenic acid in hydrogenated oil can be efficiently and selectively hydrogenated, by means of an integrated process and blending, the oxidation stability is remarkably improved, meanwhile, the excellent low-temperature fluidity of the product is kept, the refining yield is high, the process is simple and convenient, and the method is suitable for large-scale production of the environment-friendly high-performance vegetable insulating oil.

The invention discloses a vehicle shock absorber lubricating oil composition, and also discloses a preparation method of the vehicle shock absorber lubricating oil, the composition comprises the following components by mass: 83.37-88.69% of base oil, 11%-16% of a viscosity index improver, 0.3-0.6% of a gear oil composite additive, and 0.01-0.03% of an anti-foaming agent, and the sum of the mass percentages of the components is 100%. The vehicle shock absorber lubricating oil composition has the advantages of few types of raw materials, simple production process, easy operation and excellent cost performance, has excellent viscosity-temperature performance and low-temperature fluidity, excellent extreme pressure wear resistance and shear stability, excellent anti-oxidation stability, excellent rubber compatibility and anti-foaming property, and can be used as a vehicle shock absorber lubricating oil composition. The shock absorber can be used for various high-grade motorcycles, cars, wagons, new energy vehicles, railway locomotives and other vehicles, and provides a stable and long-lasting shock absorption effect for vehicle shock absorbers.

The invention provides an immersed single-phase cooling liquid. The immersed single-phase cooling liquid comprises the following components: 50-70 parts of base oil, 30-50 parts of a flame retardant and 10-20 parts of an antioxidant, the flame retardant is one or more of an organic silicon flame retardant, an inorganic silicon flame retardant or an organic silicon nano composite material. The obtained immersed single-phase cooling liquid has good flame retardance, high insulativity, low-temperature fluidity, heat conductivity and material compatibility. And the method can be widely applied to the fields of industrial production, electronic equipment cooling, power equipment cooling and the like.

The present invention relates to the technical field of gasoline, particularly to a sustainable lead-free aviation gasoline fuel composition, which comprises the following components by volume: 5-20 parts of toluene; 10 to 25 parts of xylene; 5 to 10 parts of aniline; 20-55 parts of an alkane mixture; 5-15 parts of sustainable aviation fuel; and 2-5 parts of fuel ethanol. The method for preparing the sustainable lead-free aviation gasoline fuel composition comprises the following steps: firstly mixing a mixture of toluene, xylene and alkane and sustainable aviation fuel, then adding aniline and fuel ethanol, and stirring for 1 hour to complete mixing of the lead-free aviation gasoline fuel composition. The lead-free aviation gasoline fuel composition has the characteristics of high octane number, low sulfur content, low oxygen content and the like, and all the components are generated in a sustainable production mode, so that the burden of wastes on the environment is reduced, and the influence of carbon emission on the environment is reduced.

This invention relates to the field of lubricating oil technology, and discloses an 80W-90 locomotive gear oil, its preparation method, and its application. Based on the total weight of the 80W-90 locomotive gear oil, it contains 50wt%~90wt% coal-based base oil, 5wt%~20wt% synthetic ester, 2wt%~7wt% extreme pressure anti-wear agent, 0.5wt%~3wt% antioxidant, 0.1wt%~0.7wt% pour point depressant, 0.001wt%~0.04wt% antifoaming agent, 0.05wt%~10wt% metal deactivator, 1wt%~8wt% viscosity index improver, 0.5wt%~1wt% rust inhibitor, and 0.02wt%~0.3wt% demulsifier. The 80W-90 locomotive gear oil exhibits excellent extreme pressure anti-wear properties, load-bearing capacity, pitting corrosion resistance, low-temperature fluidity, and thermal oxidation stability.

The invention provides a hydraulic oil composition as well as a preparation method and application thereof, and belongs to the technical field of industrial oil for an engineering machinery hydraulic system. The hydraulic oil composition comprises base oil, a viscosity index improver, an antioxidant, an anti-wear agent, an anti-rust agent, a metal deactivator, a pour point depressant, an anti-foaming agent and a demulsifier, the base oil is selected from hydrofined base oil; the viscosity index improver is polymethacrylate; the pour point depressant is polymethacrylate. According to the composition disclosed by the invention, the base oil, the viscosity index improver and the pour point depressant are improved, and other additives are matched, so that the prepared hydraulic oil composition has excellent low-temperature fluidity, anti-rust property, wear resistance, high-temperature oxidation resistance and the like, and the oil product can meet all requirements of quality indexes.

The application relates to the technical field of electrical insulation materials, and discloses a natural ester insulating oil and a preparation method thereof, the preparation method of the natural ester insulating oil comprising the following steps: preparing a composite pour point depressant mother liquor containing polymethyl acrylate and an intermolecular spacer; atomizing and injecting the composite pour point depressant mother liquor into a base oil flow for online mixing, and controlling the momentum flux ratio to be 5-20; gradient quenching the mixed oil flow, and controlling the cooling rate to be 6-15 DEG C / min. According to the application, fluid mechanics control and thermodynamics locking are adopted, so that the polymethyl acrylate pour point depressant is in a non-equilibrium state solvated dispersion structure in the base oil. The obtained insulating oil has a filter blocking tendency value less than 1.05, the application has excellent low-temperature fluidity and micro cleanliness, solves the problems of uneven dispersion and easy agglomeration of the polymer pour point depressant in the natural ester, and is suitable for high-voltage power equipment.