46results about How to "High flash point" patented technology

The invention discloses an organic silicon cooling liquid and a preparation method thereof, the product has low viscosity and high flash point, and relates to the field of application of single-phase cooling liquid for heat dissipation of heating equipment, and the specific method comprises the following steps: uniformly mixing olefin and a catalyst at 20-30 DEG C, heating to 35-45 DEG C, dropwise adding hydrogen-containing siloxane, and controlling the temperature of the reaction liquid to be in a range of 60-130 DEG C; after adding, continuously stirring; cooling after the reaction is finished, and removing residual olefin to obtain a final product with a general formula of (CH3) 3SiO-[R1R2SiO] nSi (CH3) 3, wherein R1 is an alkyl group ranging from 8 to 16; r2 is a methyl group or a trimethylsiloxy group; n is equal to 1-2. The prepared single-phase organic silicon cooling liquid has the performance of high flash point and low viscosity, is low in surface tension, good in fluidity, more comprehensive in coverage, better in heat dissipation effect, good in compatibility with materials of a data center, free of swelling and other damage with related materials, and safe and long-acting.

The present invention belongs to the technical field of alkyd resin coatings, and discloses an alkyd external enamel and a preparation method thereof. The present invention adopts a bio-based high flash point alkyd resin as a base resin, adopts nano titanium dioxide, nano zinc oxide, nano aluminum oxide and micron aluminum oxide with different particle size distributions for compounding, and adds isocyanate silane and glycerol ether silane in the system. After grinding, the pigments and fillers can be modified to improve the filling and modification effect of the pigments and fillers. At the same time, the active groups such as isocyanate groups, epoxy groups, and hydroxyl groups in the coupling agent can interact with the alkyd resin to improve the compatibility of the pigments and fillers with the alkyd resin, and give the coating film excellent adhesion to the inorganic substrate. With a high flash point solvent, a bio-based coating with high flash point, high adhesion, high aging resistance and high wear resistance can be prepared to meet the use requirements of the external enamel. The alkyd external enamel is environmentally friendly and safe, and can be stored and transported according to general chemicals.

The invention relates to a preparation method and application of heat-resistant high-thermal-conductivity modified dimethyl silicone oil. Adding a certain proportion of phenylalkoxysilane into dimethyl silicone oil, blowing in water vapor, heating to 60-70 DEG C, stirring, adding zirconium caprylate, heating to 100-180 DEG C, continuously blowing in high-purity nitrogen, preserving heat, stirring and dispersing uniformly to obtain a heat-resistant additive; the preparation method comprises the following steps: adding a liquid metal composite material into dimethyl silicone oil while stirring, heating to 160-230 DEG C, dropwise adding a heat-resistant additive, continuously blowing high-purity nitrogen, and continuously stirring and homogenizing to obtain the metal bright-color modified dimethyl silicone oil. In the dimethyl silicone oil, the modified dimethyl silicone oil can be obtained by taking methyl phenyl alkoxy silane, zirconium octoate, a liquid metal composite material and the like as modifiers, the thermal conductivity can be improved to 4-8W / m.K, the weight loss mass fraction at 350 DEG C * 30min is less than 1.0%, and the heat-resistant stability and the thermal conductivity are greatly improved.

The invention discloses low-carbon multi-component mixed insulating oil resistant to high temperature and strong electric field action and application, and belongs to the field of liquid insulating dielectric media. 5 to 10 vol.% of soybean oil; %, 5 to 15 vol.% of PFAE; %, 10 to 25 vol.% of isooctyl stearate; and 0.2 to 5.0 wt% of an antioxidant. Main performance parameters of the electrical insulating liquid meet relevant parameter requirements of GB 2536-2011 unused mineral insulating oil for electrical fluid transformers and switches, and the electrical insulating liquid is particularly suitable for electrical insulating liquid for oil-immersed transformers. Compared with mineral oil, pure natural ester, synthetic ester and the like in the prior art, the multi-element mixed insulating oil disclosed by the invention is lower in acid value, kinematic viscosity and dielectric loss, higher in power frequency breakdown voltage, lightning impulse breakdown voltage and flash point, more excellent in environmental protection performance, lower in cost and beneficial to application.

The invention discloses an epoxy modified room-temperature self-crosslinking water-based acrylate dispersion as well as a preparation method and application thereof, and belongs to the field of water-based acrylic resin. The dispersoid is obtained by extracting an organic solvent from an acrylate polymer, adjusting the pH value to 7.5-8.5, mixing with ionized water and binary hydrazide, dispersing and filtering. The acrylate polymer is obtained by carrying out solution polymerization on a mixed solution of a part of initiator, a hard monomer, a soft monomer, a first type of hydrophilic monomer, a second type of hydrophilic monomer, epoxy resin and a combined cross-linking monomer and a residual initiator dissolved in an organic solvent at 80-83 DEG C, wherein the mixed solution is prepared from the initiator, the hard monomer, the soft monomer, the first type of hydrophilic monomer, the second type of hydrophilic monomer, epoxy resin and the combined cross-linking monomer. The main solvent of the dispersion is water, the viscosity is low, and the content of the organic solvent is 1t; the water-based ink has the advantages of low content of VOCs (volatile organic compounds), multiple cross-linked network structure, high cross-linking degree (78-83%), excellent resolubility after being prepared into ink, good adhesive force on a plastic film, good water resistance, good storage stability and high glossiness.

The invention relates to hydroxyl composite water fuel and a preparation method thereof, and relates to the technical field of fuel. The hydroxyl composite water fuel is prepared from the following raw materials: hydroxyl water, glycerol, Tween 80, diethylene glycol monobutyl ether, lignin and ethylene glycol. When the hydroxyl composite water fuel is prepared, the method comprises the following steps: (1) adding hydroxyl water into wood essence, uniformly stirring, standing and emulsifying to obtain a mixture A; (2) stirring and mixing glycerol, Tween 80 and diethylene glycol monobutyl ether, standing and emulsifying to obtain a mixture B; (3) adding the mixture A into the mixture B, stirring and mixing, and standing and emulsifying to obtain a mixture C; and (4) adding ethylene glycol into the mixture C, stirring, standing and emulsifying to obtain the hydroxyl composite water fuel. The hydroxyl composite water fuel prepared by the method is high in flash point, the calorific value can reach 5000 kal, the hydroxyl composite water fuel cannot be ignited by open fire in a liquid state, and safe use of the fuel can be guaranteed.

The invention belongs to the technical field of OCA optical cement, and discloses optical cement and a preparation method thereof. The optical adhesive is prepared from the following raw materials in parts by weight: 75 to 100 parts of acrylate prepolymer, 15 to 30 parts of diluent, 5 to 8 parts of acrylic acid, 10 to 20 parts of isobornyl methacrylate, 10 to 20 parts of silica sol, 2 to 3 parts of initiator, 0.5 to 3 parts of cross-linking agent and 0.5 to 3 parts of antioxidant. The acrylic resin is formed by polymerizing a hard monomer, a soft monomer and a functional monomer under the action of a photoinitiator. The optical adhesive prepared by the invention has good viscidity, is not easy to remain on a laminated display material, has high elongation and relatively good stripping property, meanwhile, the light transmittance and stability of the optical adhesive are improved by polymerization of the raw materials, and the optical adhesive is high in transparency, low in haze, free of shrinkage during curing and good in weather resistance.

The invention provides photocuring 3D printing silicone rubber ink and a preparation method and a printing method thereof. The photocuring 3D printing silicone rubber ink comprises the following components in parts by mass: 100 parts of vinyl polysiloxane; 4 to 29 parts of sulfydryl grafted polysiloxane; 10 to 50 parts of surface modified fumed silica; 0.1 to 0.5 part of a photoinitiator; 1-5 parts of a light absorber; and 10-220 parts of a diluent. According to the photocuring 3D printing silicone rubber ink, firstly, sulfydryl grafted polysiloxane serves as a cross-linking agent and is cross-linked with vinyl terminated polysiloxane to form a silicone rubber elastomer, secondly, the mechanical property of the silicone rubber elastomer is enhanced through surface modified fumed silica, and then the viscosity of the silicone rubber elastomer is adjusted through the diluent; and finally, the curing depth of the silicone rubber elastomer is adjusted through the light absorber, so that the ink suitable for photocuring 3D printing is obtained, and the contradiction that high mechanical property and low viscosity of traditional photocuring 3D printing silicone rubber cannot be achieved at the same time is overcome.

The invention provides a preparation method of acrylate modified block silicone oil. The preparation method comprises the following steps: carrying out hydrosilylation reaction on tetramethylcyclotetrasiloxane (D4H) and acrylate to obtain an intermediate, carrying out equilibrium copolymerization on the intermediate, amino double-end-socket and dimethyl mixed ring (DMC) to prepare methacrylate modified alpha, omega-double-end amino silicon oil, then adding a certain amount of double-end epoxy polyether and isopropanol to carry out ternary polymerization, and carrying out high-temperature polymerization to obtain the high-temperature-resistant epoxy silicone oil. And after the reaction is finished, distilling out part of isopropanol through reduced pressure distillation to obtain the high-content block silicone oil. Compared with the traditional block silicone oil, the block silicone oil prepared by the method has the advantages of high flash point, low cost, stable quality, strong adsorbability with fabrics, almost colorless and transparent crude oil and the like. By adjusting the length of a siloxane chain segment, the number of ester groups in the siloxane chain segment, the length of a polyether chain segment and the variability of the amination process, the prepared crude oil can be finished into similar styles for different fabrics or finished into different styles for the same fabric, and corresponding hand feeling styles can be effectively prepared according to customer requirements.

The invention discloses a preparation method of environment-friendly plant-based transformer oil, and belongs to the technical field of high-temperature transformer oil. The lubricating oil comprises the following raw materials in percentage by mass: 1-8% of a viscosity index improver, 2-5% of an antioxidant, 0.05-0.2% of a demulsifying agent, 0.1-0.3% of an acid capturing agent and the balance of improved castor oil base oil. Various additives are added, so that the viscosity index and the oil-water separation capacity of the transformer oil can be improved, and hydrolysis can be inhibited; the castor oil is used as base oil, the transformer oil is endowed with degradability, and the castor oil base oil is improved, so that the flash point and breakdown voltage of the transformer oil can be improved; wherein the antioxidant and various groups in molecules can achieve a synergistic effect, so that the oxidation resistance of the transformer oil is remarkably enhanced; therefore, the prepared transformer oil is excellent in comprehensive performance, good in flash point, breakdown voltage and oxidation resistance and degradable, and has important application value in the technical field of high-temperature transformer oil.

The engine cleaning oil composition disclosed in the present invention is composed of a metal detergent, an ash-free dispersant, a viscosity index agent, a pour point depressant, an antifoaming agent and a base oil. The present invention also discloses a preparation method of the above-mentioned engine cleaning oil composition. The engine cleaning oil composition has a good cleaning effect, can remove most of the impurities in the internal lubrication system of the engine, and disperse and remove carbon deposits, sludge, etc., to restore a cleaner environment inside the engine, and has good compatibility with high-end lubricating oils, and will not affect the performance of new engine oil. The pour point of the composition is not higher than ‑35°C, the flash point is not lower than 200°C, the evaporation loss is not more than 10.0%, and the base value is 5.0-7.0 mgKOH / g.

The invention relates to a renewable energy technology, in particular to a catalyst applied to a preparation method of biological ship fuel, and the catalyst is a sulfonated carbon catalyst. The sulfonated carbon catalyst is prepared by the following steps: S1, soaking biodiesel waste in n-hexane, standing overnight, and dissolving grease; s2, filtering the dissolved biodiesel waste to obtain an oil-solvent mixture and residues; s3, separating and recovering the solvent and oil from the oil-solvent mixture through a rotary evaporator, and pyrolyzing residues in a tubular rotating bed reactor to obtain a carbonized product and pyrolysis gas; and S4, mixing the carbonized product with concentrated sulfuric acid for reaction to generate the sulfonated carbon catalyst. According to the method, efficient resource utilization of waste is achieved, the produced recycled oil is used for preparing the biological ship fuel, a high-performance catalyst with high adaptability is provided for sustainable biological ship fuel production, the cost is low, the conversion efficiency is high, and the economic benefit is good.

The present invention relates to the technical field of lubrication of extremely low temperature equipment, and specifically to an extremely low temperature energy-saving and environment-friendly hydraulic circulating oil and a preparation method thereof. The hydraulic circulating oil comprises, by weight, 5-20 parts of alkyl naphthalene; 64-80 parts of a functional fluid containing a low-viscosity, low-volatility poly-alpha olefin base material; 10-15 parts of a hydrocarbon polymer fluid containing an ester functional group; 0.8-1.5 parts of a composite additive; 0.03-0.1 parts of a demulsifier; and 0.01-0.05 parts of a defoamer. The hydraulic circulating oil greatly improves the flash point of the oil while ensuring low-temperature starting performance and low-temperature fluidity, effectively reduces the evaporation loss of the oil, effectively balances the low-temperature and high-temperature performances of the oil, expands the application field and lubrication reliability of the extremely low-temperature oil, can meet the lubrication requirements in an extremely low-temperature working environment, and has a good energy-saving effect.

The utility model discloses a device for producing industrial white oil by hydrocracking diesel oil. Comprising a hydrocracking device and a fractionating tower, the hydrocracking device comprises a hydrofining reactor and a cracking reactor which are sequentially connected in series, the outlet of the cracking reactor is communicated with the inlet of a stripping tower, the bottom of the stripping tower is connected with the inlet of the fractionating tower, the number of tower plates of the fractionating tower is 50-60, and the inlet is formed in the 30th-32th tower plates of the fractionating tower. A cooling device is arranged at the top of the fractionating tower, a reboiling device is arranged at the bottom of the fractionating tower, and the side wall of the 27th-29th layer of the fractionating tower is communicated with the cracking reactor through a pipeline; a white oil outlet is formed in the bottom of the fractionating tower. The purposes of increasing the flash point, reducing the aromatic hydrocarbon content and improving the viscosity of the tail oil of the diesel oil hydrocracking device are achieved, the tail oil can serve as a 5 # white oil blending component, the product variety is increased, the product additional value is high, and the product income of enterprises is increased.

The invention relates to the technical field of fuel oil, in particular to fuel oil for ships and warships, which comprises the following components: mineral oil, animal and vegetable oil, a mutual solvent, a combustion improver and a preservative, the mineral oil is used as a base oil material and accounts for 77-80% of the total amount, and the animal and vegetable oil accounts for 18.5-20% of the total amount; the mutual solvent is used for improving the compatibility between the mineral oil and the animal and vegetable oil and accounts for 1-1.5% of the total amount; the combustion improver is used for improving the combustion efficiency of the fuel and accounts for 0.1-0.15% of the total amount; the preservative is used for preventing the fuel from being oxidized and deteriorated in the storage and use processes, and accounts for 0.03-0.05% of the total amount; the fuel oil for the ship is low in viscosity and can be directly injected into a ship engine to be used after being slightly preheated, meanwhile, the flash point of the fuel oil is high, the fuel oil is not prone to being ignited when accidental leakage occurs, and the sailing safety of the ship is effectively improved.

This invention belongs to the field of metal rope technology, and provides a high-oil-content coated metal rope, its preparation method, and its application. The coated metal rope includes a metal rope and a plastic outer layer coated on the outer surface of the metal rope. The metal rope includes a core wire containing a first lubricating oil and side wires containing a second lubricating oil, with the side wires wound around the outer surface of the core wire. The flash point of the first lubricating oil is 20°C to 30°C higher than the melting temperature of the plastic outer layer; the flash point of the second lubricating oil is more than 50°C higher than the melting temperature of the plastic outer layer. The method of this invention can significantly reduce oil evaporation during the coating process of the plastic outer layer, avoiding bulging, air bubbles, and coating failure. The prepared high-oil-content coated metal rope has good self-lubricating properties, which can significantly reduce internal friction and breakage of the metal rope. It can be applied to the drive mechanism of vehicle sliding doors.

The invention relates to the technical field of electrochemical energy storage, in particular to a mineral type energy storage cooling liquid composition and a preparation method thereof.The mineral type energy storage cooling liquid composition is prepared from base oil and additives, the base oil is prepared from, by mass, 80%-100% of paraffin-based mineral oil and 0-20% of naphthenic mineral oil, and the additives comprise an antioxidant, a light stabilizer and an anti-foaming agent; the addition amount of the additive is 0-1% of the total mass of the base oil. The invention relates to a mineral type energy storage cooling liquid composition. According to the mineral type cooling liquid composition and the preparation method thereof provided by the invention, the mineral type cooling liquid composition is prepared by adding trace amounts of the antioxidant, the light stabilizer and the defoaming agent into the mineral type base oil, the mineral type cooling liquid composition has relatively high flash point and breakdown voltage and relatively good low-temperature fluidity, and the cooling performance is effectively improved; and the cable also has good insulativity, fireproof safety and stability.

The present application relates to the technical field of oilfield exploitation, and discloses a styrene-methyl acrylate alkyl ester-maleic acid alkyl ester terpolymer, a preparation method and application thereof, and a wax removal and inhibition agent and application thereof.The terpolymer comprises structural unit A, structural unit B and structural unit C, can adsorb paraffin wax crystals or form a co-crystal with paraffin wax molecules to inhibit the aggregation and crystal growth of paraffin wax molecules, and can effectively inhibit the deposition of paraffin wax molecules.The wax removal and inhibition agent prepared by using the terpolymer has good wax removal and inhibition performance, can dissolve the crystallized paraffin wax, inhibit the aggregation and growth of paraffin wax crystals, and has the characteristics of high flash point and low freezing point, so that the wax removal and inhibition agent can be applied to severe cold and low temperature conditions and has a wide application range.

The invention relates to the technical field of organic silicon cooling liquid, and discloses poly (trialkyl silicon) substituted siloxane, a preparation method thereof and application of the poly (trialkyl silicon) substituted siloxane in immersion cooling liquid, the preparation method comprises the following steps: trialkyl silicon acetate and alkoxy silane are subjected to transesterification under the action of a catalyst, and the poly (trialkyl silicon) substituted siloxane is obtained. The poly (trialkyl silicon) substituted siloxane is obtained. The prepared poly (trialkylsilane) substituted siloxane is low in viscosity, high in boiling point, high in flash point, low in freezing point and good in stability, does not need to be compounded with a fluorinated liquid, can be independently used as an immersion cooling liquid and is applied to immersed heat dissipation of a chipset, and the preparation method is simple, efficient and suitable for large-scale production.

The invention provides a high-temperature-resistant electrolyte for a lithium-manganese battery and a preparation method and application of the high-temperature-resistant electrolyte, and belongs to the technical field of battery electrolytes.The high-temperature-resistant electrolyte comprises lithium salt, an organic solvent, a high-temperature-resistant additive and a flame retardant, and the high-temperature-resistant additive is polydimethylsiloxane, hexamethyldisilazane, fluoroethylene carbonate and 1, 2-propylene glycol; and one or more of 1, 3-propane sultone. Aiming at the defects of the existing electrolyte, the invention develops the electrolyte with high thermal stability and strong compatibility with the lithium elementary substance, and the electrolyte can still keep stable performance under the condition of long-time storage at 80 DEG C, and has good performance on parameters such as differential pressure, internal resistance after storage, electrolyte loss rate after storage and the like. The decomposition of the electrolyte under a high-temperature condition is reduced, the electrolyte is better matched with the system characteristics and the use environment of the lithium-manganese battery, and the application range and field of the lithium-manganese battery are widened.

The invention relates to the technical field of electric appliance cleaning agents, in particular to a high-voltage electric appliance cleaning agent and a preparation method thereof. The cleaning agent is prepared from the following components in parts by weight: 18-25 parts of tetrachloroethylene, 25-35 parts of dichloromethane, 1-5 parts of fluoroheptane, 15-20 parts of kerosene, 10-15 parts of a surfactant, 20-25 parts of a solvent, 1-3 parts of silicone oil, 1-3 parts of a penetrant and 0.2-0.8 part of an antistatic agent. The electrical equipment cleaning agent is safe and environment-friendly to use, on the premise that the electrical equipment is cleaned, the insulation and voltage resistance performance of the product is improved, the cleaning effect is guaranteed, meanwhile, the safety of construction personnel and the electrical equipment is guaranteed, especially for cleaning of the electrical equipment which cannot be shut down, the highest voltage resistance of the product can reach 10 KV or above, and the electrical equipment cleaning agent is suitable for being used for cleaning electrical equipment which cannot be shut down. And the cleaning requirements of most electrical equipment are met, shutdown is not needed, and the production efficiency of enterprises is improved.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a catalytic synthesis method of functional special polyether with narrow molecular weight distribution. The method comprises the following steps: by taking C1-C12 alcohol as an initiator, carrying out polymerization reaction with epoxide under the action of an organic catalyst, so as to prepare the functional special polyether with narrow molecular weight distribution. According to the invention, by designing an organic catalyst with a molecular structure containing phosphorus-boron (P-B) double active centers, not only is efficient catalytic ring-opening polymerization of alkylene oxide realized under a low-temperature condition, but also a special polyether product with high molecular weight and narrow molecular weight distribution is prepared. Meanwhile, by using the organic catalyst, the problems that a commercial DMC system is prone to inactivation, complex in mechanism and metal residues exist in ethylene oxide polymerization can be solved, and the application range of PAG in the fields of cosmetics, medicine and food-grade oil is widened.

The present invention relates to a phenyl dimethyl end-capped or triphenyl end-capped methylphenyl silicone oil and a preparation method thereof. The methylphenyl silicone oil of the present invention comprises: (i) an end-capping group represented by formula (1) or formula (2), (ii) a structural unit represented by formula (3), and (iii) one or two structural units selected from the structural units represented by formula (4) and formula (5). The methylphenyl silicone oil of the present invention has the advantages of high refractive index, suitable viscosity, high flash point, high transparency, and excellent heat resistance, aging resistance and radiation resistance, and can be easily prepared by a simple and safe method. Formula (1), formula (2), formula (3), formula (4), formula (5).

The invention relates to an electrolyte of a whole-chlorine solvent and an electrochemical device, the electrolyte of the whole-chlorine solvent comprises electrolyte salt and the whole-chlorine solvent, and the whole-chlorine solvent is composed of chlorinated ether and chlorinated carbonic ester. The electrolyte of the whole-chlorine solvent provided by the invention adopts the chlorinated ether and the chlorinated carbonate as the solvent of the electrolyte, does not contain flash point components, and has low volatility, low inflammability, flame retardance and compatibility with positive and negative electrodes, so that the battery shows good electrochemical performance and relatively high safety.

The present invention belongs to the technical field of cleaning agents, and in particular, relates to a combined solvent and its application. The Kb value of the combined solvent of perfluorohexene, γ-valerolactone and trans-1,2-dichloroethylene provided by the present invention is between 50-100, which indicates that the solvent not only has good solubility and removal capabilities for organic pollutants such as mineral oil, synthetic oil, rosin flux and silicone oil, but also has good compatibility with rubber and plastic materials, and will not produce swelling effect on the material matrix, affecting the normal use of electronic devices. When the combined solvent is a certain amount of perfluorohexene, γ-valerolactone and trans-1,2-dichloroethylene, its core parameters are flash point>45°C, acid value<0.1ppm, kinematic viscosity<0.5mm 2 / s (40℃), the kauri resin butanol value (KB value) is between 50‑100.

The application discloses a kind of high flash point low-loss engine oil preparation process, and the product belongs to the field of lubricant production.The engine oil is formed by high flash point base oil, additive compound after removal of low flash point volatile component by heating vacuum, removal of light component again and filling, and the base oil flash point is greater than or equal to 220 DEG C, NOACK evaporation loss is less than or equal to 8%.The preparation process includes: screening high flash point low-volatile base oil, heating to 50-150 DEG C and removing light component under negative pressure vacuum.The light component is removed from the additive under negative pressure vacuum.The treated base oil is mixed with the additive in proportion, and then vacuum light removal and degassing are carried out at 50-150 DEG C, and the finished product is filled into the pipeline of the displacement filling machine after full replacement.The application significantly improves the flash point of engine oil and reduces volatile loss by the whole-process light removal process, which can greatly reduce the load of engine oil gas separator, improve separation efficiency, solve the problems of high engine oil consumption, poor high-temperature resistance, easy oxidation and deterioration, and high oil sludge and carbon deposition.

The invention discloses high-flash-point mineral insulating oil and a preparation method thereof, and belongs to the technical field of electric insulating oil. The high-flash-point mineral insulating oil comprises the following components in percentage by weight: 94-95% of mineral transformer oil, 2% of cresyl diphenyl phosphate, 1-2% of triphenyl phosphate, 1-2% of triphenyl phosphate and 1-2% of tributyl phosphate. The high-flash-point mineral insulating oil provided by the invention has the beneficial effects that the selected flame retardant is a harmless liquid substance, halogen compounds harmful to the environment are completely avoided, and the final high-flash-point mineral insulating oil can be quickly formed by directly mixing the flame retardant and the mineral oil without the help of any solubilizer and by utilizing a mechanical stirring mode.

The present application belongs to the technical field of temperature control, and particularly relates to a temperature control liquid for coal-based Fischer-Tropsch synthesis hydrocarbon as well as a preparation method and application thereof. The temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon, or the temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon and liquid polyolefin. The distillation range of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 350 DEG C. The main component of the coal-based Fischer-Tropsch synthesis hydrocarbon is isomeric alkanes and normal alkanes with carbon number of 12-24, wherein the isomeric alkanes account for less than 90% of the total mass, and the normal alkanes account for more than 10% of the total mass. The kinematic viscosity of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 2.5 mm 2 / s at 100 DEG C, and 2.0-6.0 mm 2 / s at 40 DEG C. The kinematic viscosity of the liquid polyolefin is less than or equal to 8.0 mm 2 / s at 100 DEG C, and 2.0-20.0 mm 2 / s at 40 DEG C. The temperature control liquid has the characteristics of low density, low electrical conductivity, low kinematic viscosity and high heat conduction efficiency.

The invention discloses a vegetable oil-in-water type working solution for electric spark milling. The working fluid comprises the following main components: deionized water, olive oil, a surfactant, an antioxidant, an anti-wear agent, an anti-rust agent and a dispersing additive. Wherein the surfactant is composed of Span80 and Tween 80, the antioxidant is selected from sodium sulfite, the anti-wear agent is selected from vulcanized lard oil, the anti-rust agent is selected from oleic acid octadecane amine, and the dispersing additive is selected from styrene sulfonic acid. The preparation method comprises the following steps: firstly, dropwise adding the Tween 80 into the deionized water, stirring for 5 minutes, dropwise adding the Span80, stirring for 5 minutes, and dropwise adding the vegetable oil, the sodium sulfite and the styrene sulfonic acid into the liquid at a constant speed while stirring, so as to obtain a crude solution A; heating the crude solution A in a water bath manner to obtain an emulsion B; putting the emulsion B, vulcanized lard oil and octadecylamine oleate into a reaction kettle, and controlling the pressure of the reaction kettle to be 2MPa and the temperature to be 65 DEG C, so as to obtain the vegetable oil-in-water type crude emulsion. And stirring in a water bath kettle to room temperature to obtain the vegetable oil-in-water type working fluid for electric spark milling. The vegetable oil-in-water type working solution for electric spark milling has the advantages of being environmentally friendly, high in flash point, low in conductivity, safe to use and the like, effectively solves the problem that an oil-based working solution pollutes the environment, and meets the requirements of green manufacturing and sustainable development.

The invention provides a 2-methylcyclopentadienyl manganese tricarbonyl diluent and a preparation process thereof, and relates to the field of petrochemical industry. The 2-methyl cyclopentadienyl manganese tricarbonyl diluent disclosed by the invention is prepared from the following raw materials in parts by weight: 70 to 80 parts of 2-methyl cyclopentadienyl manganese tricarbonyl, 20 to 30 parts of dimethyl octanoate, 0.1 to 0.3 part of 2, 6-butylated hydroxytoluene, 0.4 to 0.6 part of a compound light stabilizer, 0.3 to 0.5 part of alkylphenol polyoxyethylene ether and 0.08 to 0.12 part of benzotriazole. According to the invention, 2-methylcyclopentadienyl manganese tricarbonyl is taken as a basic raw material, dimethyl octanoate is taken as a solvent, and 2, 6-butylated hydroxytoluene, a composite light stabilizer, alkylphenol polyoxyethylene and benzotriazole are added, so that a diluent system is effectively optimized, and the prepared 2-methylcyclopentadienyl manganese tricarbonyl diluent has better light stability, and is suitable for industrial production. Moreover, the freezing point is lower, and the method is suitable for a wider application range.