52 results about "N-dodecane" patented technology

The invention discloses a soil body displacement field visualization testing device used in the pile sinking process and a using method. Transparent soil is formed by compounding the mixed liquid of n-dodecane and fifteenth white oil with baking silica sand; in the pile sinking testing process, the soil body around a pile is cut through a laser to form a bright internal soil body particle section, a CCD camera is used for shooting the section right opposite to the CCD camera, a series of images of the section is acquired, the continuous transformation characters of the interior of the soil body are obtained based on the particle image processing technology, and the un-embedding visualization measuring on the interior continuous transformation, caused in the pile sinking process, of the soil body around the pile is achieved. By means of the technical method, the problem of measuring on the interior continuous transformation of the soil body around the pile in the pile sinking process is solved. The soil body displacement field visualization testing device is high in operability, simple, portable, economical, practical and high in measuring precision.

The invention relates to a method for recycling bromine from bromine-containing wastewater of brominated butyl rubber, which comprises the following steps: pretreatment: feeding the bromine-containing wastewater of brominated butyl rubber into an air flotation device, adding a coagulant to remove large colloidal particle matters and organic pollutants, and filtering so that the turbidity of the output water is lower than the preset value; acidification: adding hydrochloric acid or sulfuric acid into the filtered bromine-containing wastewater to adjust the pH value to 3-5; oxidation: adding an oxidizing agent into the acidified bromine-containing wastewater for oxidation to generate bromine; extraction: adopting n-dodecane as an extraction agent, adding n-dodecane into the oxidized bromine-containing wastewater, and extracting bromine from an aqueous phase to an n-dodecane phase; liquid separation: performing liquid separation on the two-phase solution added with the extraction agent, wherein the upper layer is an oil phase, and the lower layer is an aqueous phase; separating the aqueous phase from the oil phase, recycling the oil phase, and discharging the aqueous phase. By adopting the method provided by the invention, the bromine recycling cost is greatly reduced, and better economic benefits are obtained.

The invention discloses a low-temperature phase change material used in drug cold-chain transportation. The low-temperature phase change material is prepared by mixing the following components in percentage by weight: 88.5-91.8% of n-tetradecane, 4-5% of n-dodecane, 2-3% of n-tridecane, 2-3% of n-pentadecane, and 0.2-0.5% of iso-tetradecane. According to the material, the melting point is 2-3 DEGC, so that the drug temperature can be kept within the valid range of 0-5 DEG C during transportation; in addition, the melting enthalpy of the material is high; the degree of supercooling is low; andthe circulating stability is high.

The present invention relates to a hard coat film having a hard coat layer on at least one side of a base film, wherein the surface of the hard coat layer has a water contact angle of 78 to 90° and an n-dodecane contact angle of 22° or less. The hard coat film has excellent fingerprint resistance when it is used in a finger input touch panel; has excellent adhesion and no defects which disturb optical inspection when it is used as a protective film for a capacitance touch panel; and preferably has high uniformity in film thickness.

The invention discloses a preparation method and application of a Pt/SAPO-11 dual-functional catalyst, wherein the method comprises the following steps of: 1, loading Pt on an SiO2 carrier, and obtaining Pt/SiO2 after being subjected to impregnating in room temperature, drying and sintering; 2, mixing and grinding the Pt/SiO2 with an aluminum source, a microporous template agent and a phosphorus source according to a certain proportion, and carrying out crystallization reaction at 140-220 DEG C; and 3, after the reaction product is subjected to separation and drying, roasting to remove the template agent to obtain the Pt/SAPO-11 dual-functional catalyst. According to the preparation method, the Pt/SAPO-11 double-functional catalyst is prepared by adopting a pre-loading process, the interaction between metal and a carrier is enhanced, and the hydroisomerization yield of long-chain alkane is improved; and the hydroisomerization isomer yield of SAPO-11 molecular sieve to n-dodecane prepared by the preparation method is as high as 84%, and the liquid yield is maintained 99% or more.

The invention discloses a method for separating lithium cobaltate and graphite in a waste electrode material. The method comprises the following steps: discharging a waste lithium ion battery, naturally air-drying the battery for 24 hours, manually disassembling and separating positive and negative plates, a diaphragm and a shell, crushing and screening the positive and negative plates to obtain an undersize material; uniformly mixing a collecting agent n-dodecane and ethyl alcohol in advance according to a certain proportion, and adding a certain amount of the mixed agent and the undersize material into ore grinding equipment together to obtain an ore grinding product; conducting flotation on the ore grinding product, wherein the floating matter is graphite tailings and the sediment is lithium cobaltate concentrate; after an obtained flotation product is filtered, dried and roasted, calculating the grade of lithium cobaltate; subjecting one part of the ore grinding product to direct ore-grinding (without adding chemicals) and flotation, and calculating the grade of lithium cobalt oxides for comparison. Compared with direct ore-grinding and flotation, the grade of lithium cobalt oxide concentrates separated in the ore-grinding and dosing-flotation mode is obviously higher than that of the lithium cobaltate concentrate separated in the direct ore-grinding and flotation mode. Theprocess of flotation separation and recovery of the lithium cobalt oxide is enhanced.

The invention discloses Ectropis obliqua sex pheromone, comprising in percent by weight: 18-72% of Z3, Z6, Z9-octadecatriene; 15-60% of Z3,Z9-6,7-epoxy-octadecadiene; 0.01-3% of an antioxidant; 0.01-5% of a photostabilizer; 1-5% of leaf alcohol; 1-5% of n-heptanal; 1-5% of tea polyphenols. The invention also provides a preparation method and lure core of the Ectropis obliqua sex pheromone; the preparation method incudes: dissolving the Ectropis obliqua sex pheromone with n-dodecane to obtain a solution; the lure core is made by placing 10 MuL to 100 MuL of the Ectropis obliqua sex pheromone in a release unit. The Ectropis obliqua sex pheromone is synergic to the luring of Ectropis obliqua, enables mass male insects to be lured and killed and mating to be interfered, thereby comprehensively treating Ectropis obliqua, and is significant to the prevention and treatment and prediction of Ectropis obliqua.

The invention belongs to the technical field of petrochemical engineering, and discloses a representation method and a representation system of tight sandstone oil-water relative permeability information. Effective connection with a core holding unit device is realized through a nuclear magnetic resonance device, and a tight sandstone displacement of oil by water process under nuclear magnetic resonance device is completed; and heavy water is used for displacement of oil; an oil and water relative permeability curve is solved and drawn through signals in a T2 spectrum of detected n-dodecane and port discharged liquid quantity; then, the displacement of oil by water process in a stratum is analyzed comprehensively in combination with geological conditions. In the method provided by the invention, oil content and water content in the core are solved through the T2 spectrum, and the finally drawn oil and water relative permeability curve is more accurate than that drawn by other methods;in an experiment process, a nuclear magnetic resonance test can be executed at any stage, the core is free from being taken out, and an experiment result obtained meets actual conditions better; the method is more convenient to operate, the whole process of the displacement of oil by water can be highly represented through the nuclear magnetic resonance test, so the method has actual significancein development of tight oil.

The invention discloses a preparation method for a large-size 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-PEN) thin crystal. The preparation method is characterized by blending a 6,13-bis(triisopropylsilylethynyl)pentacene solution by simply taking chlorobenzene and n-dodecane as a mixed solvent according to a certain volume ratio, placing the solution in a closed petri dish in the growth process of the thin film for regulating the growth conditions, and growing the organic thin crystal with the size up to millimeters. The organic large-size TIPS-PEN thin crystal prepared by the preparation method has good application potential on the aspect of producing low-cost and high-performance integrated electronic devices.

The invention discloses a composite crude oil demulsifying agent. The composite crude oil demulsifying agent consists of a polyether compound, n-dodecyl carboxylic acid and a solvent, wherein the part ratio of the total mass of the polyether compound and the n-dodecyl carboxylic acid to the mass of the solvent is (2-3):(2-3); the mass part ratio of the polyether compound to the n-dodecyl carboxylic acid is (1-6):(1-4); the polyether compound is at least one of the compounds which are shown as a formula (I), a formula (II) and a formula (III); a wavelike mark in the formula (I), the formula (II) and the formula (III) represents -CH2CH2CONHCH2CH2-; PO represents isopropoxy; EO represents ethyoxyl; x is a number of between 10 and 100; and y is a number of between 5 and 50. The composite crude oil demulsifying agent has high demulsification performance for crude oil emulsion and can be applied to the field of demulsification and dehydration of crude oil.

The invention provides a preparation method for a phase-change heat storage capsule used for thermal adjusting of a power lithium battery, and belongs to the technical field of power batteries. Mixedsalt comprising 20-35wt% of lithium nitrate, 1.5-5wt% of sodium nitrate, 2.5-10wt% of potassium nitrate, 2-10wt% of calcium nitrate, 5-15wt% of sodium nitrite, 15-35wt% of sodium chloride, 1-6wt% of potassium carbonate and 1-8wt% of potassium sulphate is ground into fine powder, and after sieving adopting a 120-mesh sieve, fine fused salt powder with the uniform particle size is formed; 4 grams ofthe fine fused salt powder after sieving and a butyl ether solution (the mass fraction is 30%) of 3 grams of perhydropolysilazane (PHPS) are placed in a round-bottom flask for uniform mixing, 150 grams of n-dodecane is added, the mixture is stirred for 10 minutes, and then standing is conducted for 30 minutes. The preparation method has the advantages that the phase-change temperature is 50-55 DEG C, and the cost is lower.

The invention discloses an isoquinoline ionic liquid, synthesis and applications thereof. The synthesis method comprises the following steps: rapidly adding isoquinoline and bromo n-alkane into a reactor in the absence of water and oxygen under the protection of nitrogen gas, heating under stirring to carry out reflux reactions so as to obtain a crude product after the reflux reactions; cooling the crude product to the room temperature, dissolving the crude product then, subjecting crude product to column chromatography to remove the color and impurities, carrying out rotary evaporation to obtain a sticky liquid; subjecting the sticky liquid to multiple times of washing and recrystallization, and finally removing the residual solvent to obtain the isoquinoline ionic liquid; wherein the bromo n-alkane can be bromo n-butane, bromo n-octane, or bromo n-dodecane. The isoquinoline ionic liquid can be used as a bacteriostatic agent to kill escherichia coli and plant pathogenic bacteria.

The invention discloses a method for preparation of surface active onion-like carbon nanospheres based on vapor deposition. The method includes: taking liquid small organic molecule alkane n-dodecane as the carbon source, carrying out chemical vapor deposition reaction at a high temperature of 650-700DEG C in an inert carrier gas environment with the existence of a ferrocene catalyst to directly prepare the high surface activity onion-like carbon nanospheres composed of onion-like graphitized shell coated ferroferric oxide nanoparticles. The onion-like carbon nanosphere product prepared by the method provided by the invention has good surface activity, thermal stability and wide practicability, and can be applied to adsorption materials, energy storage materials, catalytic materials, medical materials, and other fields.

A method for synthesizing copper-zinc-tin-sulfur quantum dots by utilizing ultrasonic cavitation comprises the following steps: mixing cupric sulfate pentahydrate crystals, zinc sulphate heptahydrate crystals, stannic sulfate dihydrate crystals and thiocarbamide crystals, adding the mixture into ethylene alcohol, and mixing uniformly to obtain a solution A; immersing the probe of an ultrasonic treatment instrument into the solution A, and then separating powder from the solution subjected to treatment by the ultrasonic treatment instrument; finally, washing the powder with n-dodecyl mercaptan so as to remove excessive sulfur ions. With adoption of the method disclosed by the invention, the copper-zinc-tin-sulfur quantum dots are synthesized by utilizing ultrasonic cavitation. The method has the advantages of simple and convenient operation, high repeatability, low cost, controllability of granular size of the copper-zinc-tin-sulfur quantum dots and the like. In addition, no highly toxic chemical substances are used during the whole process, the preparation process is fast, the environmentally friendliness is achieved, and the prepared copper-zinc-tin-sulfur material is pure in phase.

The invention provides a production method of milbemycin. The production method comprises the following steps: (S1) dissolving a milbemycin extract by virtue of a first solvent, so as to obtain a first milbemycin dissolving solution; (S2) adding a second solvent into the first milbemycin dissolving solution obtained in the step (S1), stirring to crystallize, so as to obtain coarse crystallization powder; (S3) dissolving the coarse crystallization powder obtained in the step (S2) with the first solvent, so as to obtain a second milbemycin dissolving solution; and (S4) adding the second solvent into the second milbemycin dissolving solution obtained in the step (S3), stirring to recrystallize, so as to obtain milbemycin recrystallization powder, wherein the first solvent is any one of ethanol, acetone, ethyl acetate or isopropyl-ketone, and the second solvent is any one of n-hexane, n-heptane, n-octane, n-nonane, n-decane, n-undecane or n-dodecane. The production method provided by the invention has the advantages that the process is simple, the production cycle is short, the recycling amounts of the solvents are low, and the prepared milbemycin has high purity.

A method for preparing alkyl containing carbon nano tube nano-fluid is characterized by comprising the components based on volume ratio: 0.1-1.0% of carbon nano tube with surface hydroxylation, 94-97.9% of alkane and 2-5% of dispersant; first, the alkane is directly mixed together with the dispersant according to the proportion; then, after being treated by strong base ball milling, the carbon nano tube with surface hydroxylation is added into the mixture according to the proportion; after that, supersonic vibration is carried out, and alkyl nano-fluid which can stably suspend as well as effectively transfer heat and cool. The dispersant is lipophilic dispersant which is selected from oleyl amine or Tween. The alkane is normal octane or n-dodecane. Compared with the prior art, the method has the advantages of even dispersion of the nano-fluid, long stable time and high coefficient of heat conductivity. Especially, when the volume ratio of the carbon nano tube in the nano-fluid is 1.0%, the coefficient of heat conductivity of the nano-fluid is over 15% more than that of the alkane.

The invention discloses a bone black automobile clutch friction material. The bone black automobile clutch friction material comprises, by weight, 1-2 parts of propylene glycol alginate, 1-2 parts of diphenylsilanediol, 2-3 parts of ammonium aluminum sulfate, 6-10 parts of acrylonitrile-styrene copolymer, 3-5 parts of bone black, 0.3-1 part of acetylacetone, 3-4 parts of polytetrafluoroethylene fibers, 3-5 parts of vinyltrimethoxy silane, 50-60 parts of acetone, 20-30 parts of dimethyl sulfoxide, 6-8 parts of anhydrous ethanol, 50-60 parts of methyl methacrylate, 20-26 parts of butyl acrylate, 0.3-1 part of 1-dodecanethiol, 20-34 parts of titanium sulfate, 16-20 parts of glucose, 60-70 parts of nanometer carbon powder, 200-300 parts of isopropanol, 80-100 parts of nylon66 and 0.04-0.06 parts of azodiisobutyronitrile. The automobile friction material has the advantages of good wear resistance, long service life, good oil resistance, good weatherability and superior comprehensive performances.

A cross-linking system which includes at least; one organic peroxide having a half-life of one hour at any temperature selected in the range from 80 DEG C. to 115 DEG C., and a cross-linking coagent, the half-life of said peroxide being measured by dissolving the peroxide in n-dodecane having a concentration of 0.2 mol/l. Said system enables, when added to a polymer, quick cross-linking of said polymer. The system is in particular suitable for encapsulating photovoltaic modules; in particular, the system can be used to improve the productivity of the method for manufacturing said modules.

The invention relates to a production method of a printing rubber roller cleaner. The method is characterized in that the cleaner comprises alkyl polyglucoside, mono-butyl polyether, N-dodecane alanine, limonene and isopropyl. The cleaner is strong in degreasing force and has a particularly strong cleaning effect on oil stains and ink dirt of printing rubber rollers, and clear water can be adopted for after-treatment washing of the printing rubber rollers. The cleaner is a colorless, transparent and low-viscosity liquid in appearance, has the pH value ranging from 6 to 8, has the pleasant aroma and is non-irritating to human skin. After automobile engines are cleaned with the cleaner, hands of cleaning workers are not stained with oil.

The invention discloses an anti-impact automobile clutch friction material. The anti-impact automobile clutch friction material is composed of, by weight, 20-34 parts of titanium sulfate, 3-5 parts of vinyl trimethoxy silane, 50-60 parts of acetone, 20-30 parts of dimethyl sulfoxide, 6-8 parts of absolute ethyl alcohol, 50-60 parts of methyl methacrylate, 0.3-1 part of 1-dodecanethiol, 16-20 parts of glucose, 60-70 parts of nanometer carbon powder, 200-300 parts of isopropanol, 80-100 parts of nylon 66, 0.04-0.06 part of azodiisobutyronitrile, 20-26 parts of butyl acrylate, 2-3 parts of sodium silicate, 10-15 parts of polytef wax, 1-3 parts of methyl cellulose, 2-3 parts of calcium acetylacetonate, 1-2 parts of octadecanoic acid, 1.8-3 parts of quick lime, 2-4 parts of dioctyl sebacate and 0.3-1 part of sp80. According to the anti-impact automobile clutch friction material, a friction plate is high in strength, capable of bearing impacts, not prone to cracking and peeling at a high speed, large in friction coefficient, stable, long in service life and not prone to damage.

The invention provides ethirimol emulsion in water and a preparation method thereof. The emulsion in water comprises the following components by weight percent: 1-50% of ethirimol, 1-20% of a solvent,1-8% of an emulsifier, 3-8% of an antifreeze agent and the balance water, wherein, the solvent is one or more than one of N-octyl pyrrolidone, N-dodecyl pyrrolidone, Solvesso 100, Solvesso 150 and Solvesso 200. The ethirimol emulsion in water of the invention has average particle size which is more than that of a suspension agent, thus having better stability and better effect and reducing environmental pollution.