32 results about "Fluorine" patented technology

The invention discloses an apparatus and a method for determining high temperature wettability. The apparatus comprises a heater body, a heating portion, an extruding dripping portion, a sample supporting portion and an image acquisition and processing portion. The heater body is comprised of a stainless steel cavity, a furnace lid and a No. 3 fluorine rubber ring bolt connecting together. A shielding layer in the heating portion is arranged in the center of a furnace bottom in the heater body, and a heating member is placed at the center of the shielding layer. The extruding dripping portionis perpendicularly arranged on an upper end of the heater body, and a lower end of a thermocouple in the heating portion, a lower end of the extruding dripping portion and an upper end of a sample bench are placed in the heater body. A substrate is placed at top of the sample bench. Two sets of CCD digital cameras or CMOS high speed cameras in the image acquisition and processing portion and a light source are respectively placed at the front and rear and the left and right of the heater body, and are in a same horizontal line with a symmetric axis of a quartz glass observation window, a wallthrough hole on the shielding layer and a heating member through hole on the heating member. The invention also provides a method for determining high temperature wettability.

The invention provides a rubber composite used for rubber framework oil seal and a preparation method thereof. The rubber composite contains(based on weight portions) 100 portions of fluorubber26, 5-6 portions of acid absorber magnesia, 5-6 portions of calcium hydroxide, 9-1 portions of strengthening agent black carbon, 19-20 portions of barium sulphate, 17-19 portions of iron oxide red, 2-3 portions of process additive, 1.5-2 portions of curing ingredient bisphenol AF, and 0.6-0.8 portions of accelerant BPP. The rubber composite improves the tension strength, extensibility, tear resistance, self-lubricating effect, compressive deformation resistance and thermal aging resistance of the rubber framework, makes the rubber framework good in medium resistance and prolongs the service life of the rubber framework oil seal. Meanwhile, the method is simple in process, reasonable in mixture ratio and reduces preparation cost and defective index.

Treated water with good water quality which can be discharged or reused is obtained by efficiently removing SS, fluorine, cyanogen, selenium, ammonia, and COD components contained in coal gasification wastewater such as gas washing wastewater generated in a coal gasification step. A method of treating coal gasification wastewater comprising steps (1) to (4), wherein the step (1) is performed prior to the step (2): (1) a fluorine removal step in which fluorine is removed by coagulation sedimentation; (2) a cyanogen decomposition step in which cyanogen is decomposed by wet oxidation or thermal hydrolysis; (3) a selenium treatment step in which selenate ions are subjected to a reduction treatment with a metal reductant; and (4) a COD/ammonia removal step in which COD and/or ammonia are/is removed.

The invention discloses a lithium-sulfur battery electrolyte with high safety and high performance. The electrolyte is prepared from three components as follows: 0.1-10 mol/L of lithium salt, a fluoro cyclic and/or chain-like carbonate ester compound organic solvent and other functional additives. The electrolyte is quite stable for lithium polysulfide, and the problem about reaction of common carbonate ester solvents and lithium polysulfide is solved; meanwhile, the fluorine element has a good flame retardant property and the safety performance of the lithium-sulfur battery adopting the electrolyte can be remarkably improved.

The invention discloses a double-alkali neutralization treatment method of heavy metal-containing acidic wastewater. According to the double-alkali neutralization treatment method, sodium hydroxide is mainly used for adjusting a pH value so that metal ions in acidic wastewater form precipitates, the precipitates are recovered, the recovered metal sludge is treated and then can be used as metal oxides for next use, through lime use, fluorine ions in the wastewater form precipitates, and the precipitates do not contain heavy metals and can be treated by a common sludge treatment method. The sludge treated by the double-alkali neutralization treatment method is not used as dangerous waste or can be used as a fluorite-like accessory material, and the rest of the wastewater satisfies discharge standards by slight treatment.

The invention discloses a coagulating agent for use in the treatment of wastewater containing fluorine and an application process thereof. The coagulating agent for use in the treatment of water containing fluorine is a composite coagulating agent prepared by adding a polymer organic additive during the synthesis of aluminium polychlorid; the polymer organic additive is a cationic polyacrylamide having a 10 to 30 percent amination degree and a 5 to 8 million molecular weight; and the mass of the added polymer organic additive is 1 to 10 percent of that of AlCl3.H20. The application process comprises: adding a modifier of lime milk into the wastewater containing fluorine to adjust the pH value of the wastewater containing fluorine to between 6 and 9; and adding the coagulating agent for use in the treatment of wastewater containing fluorine into the wastewater containing fluorine for coagulation in an amount of 900 to 1,500 milligrams of coagulating agent for use in the treatment of wastewater containing fluorine per liter of wastewater containing fluorine. The coagulating agent for use in the treatment of wastewater containing fluorine is low in raw material price and production cost, and the application process is simple, high in removal efficiency and low in investment cost and has the advantages of high efficiency and economy.

The invention discloses a formula of a fluororubber-ethylene propylene rubber mixing rubber compound, which comprises the following components in parts by weight: 50-70 of ethylene propylene rubber, 30-50 of fluororubber, 8-15 of nitrile buna rubber, 2.5-10 of magnesium oxide, 5-10 of zinc oxide, 0.1-0.5 of accelerant M, 0.2-1 of stearic acid, and 0.2-1 of sulphur. The fluororubber-ethylene propylene rubber mixing rubber compound obtained according to the invention is capable of simultaneously having high medium-resistant property and low-temperature-resistant property; simultaneously, proper elasticity can also be kept.

The invention relates to a fluorocarbon surfactant and a preparation method thereof, which reacts 10-50 parts by weight of perfluoroalkyl sulfonyl fluoride, 5-45 parts by weight of amine and 20-25 parts by weight of solvent at the temperature of ranging from 20 DEG C to 110 DEG C for 2 through 12 hours to acquire an intermediate product; mixing well the intermediate product with 10-30 parts by weight of an oxidant and stirring the mixture for reaction at the temperature of ranging from 20 DEG C to 80 DEG C for a plurality of hours; adding 0.1-2.5 parts by weight of an accessory ingredient and mixing well after the reaction is finished; in this way, the product is acquired when the filtrated product is stirred and mixed with 5-30 parts by weight of a de-ionized water at the temperature of ranging from 0 DEG C to 50 DEG C. Compared with the prior art, the product prepared by the invention is of short technical process of preparation, simple operation, high reaction efficiency, low production cost and is characterized by high surface activity, high thermal stability and high chemical stability. The surface tension of a water solution of 0.01 percent is lower than 16dyn/m, and the CMC value is lower.

The invention discloses a method of purifying perfluoromethyl cyclohexane. The method comprises the following steps of: (1) neutralizing a perfluoromethyl cyclohexane crude product prepared by an electrofluorination method with aqueous alkali till an upper water phase is neutral, standing for liquid separation, and transferring a lower layer organic phase to a distillation kettle, (2) performing simple distillation, (3) performing extraction, (4) performing deep fluorination: supplying fluorine and nitrogen gas mixture into components after extraction for reaction for 0.5-10h at -20-10 DEG C, supplying nitrogen to purge and replace the gas mixture, (5) performing alkali disliquid: transferring fluorinated perfluoromethyl cyclohexane into a reaction kettle, adding an alcohol-alkali-water solution at a mass ratio of 1:1:1 into the reaction kettle, performing reflux for 10h, taking and drying the lower layer organic phase, (6) performing rectification, and (7) performing multistage adsorption-desorption. The method is suitable for purifying the perfluoromethyl cyclohexane crude product prepared by the electrofluorination method, simple in flow and easy to operate; industrial production is easy to realize; the purity of a prepared product reaches 99.9% or above.

The present invention is to provide a photocurable fluorinated copolymer composition which is uniform and excellent in transparency, and a coating film layer obtainable by using it, is excellent in heat resistance and abrasion resistance and exhibits a particularly excellent weather resistance performance. The photocurable fluorinated copolymer composition comprises a specific fluorinated copolymer (A), a specific hydrolysable silane compound (B), an epoxy resin (C) having a cyclohexane ring structure, and a photoreaction initiator (D).

The invention relates to high-weatherability anti-corrosive paint, which is mainly applied to an iron tower assembly. Raw materials of the paint mainly comprise organic silicon resin and fluorine or fluorine surface active agents. The iron tower assembly comprises an assembly body, wherein a zinc-containing layer and a composite layer are arranged outside the body, and the composite layer comprises organic silicon resin mixed with the fluorine or the fluorine surface active agents, i.e. the composite layer is the high-weatherability anti-corrosive paint. The high-weatherability anti-corrosive paint and the iron tower assembly disclosed by the invention are characterized in that the paint is applied to the outer surface coating of steel (iron) materials, because the organic silicon rein and the fluorine or the fluorine surface active agents are adopted as major parts of the raw materials, the ultravioresistant capability is greatly improved, in addition, the attaching force is good, the waterproof capability is good, and the iron tower assembly is difficult to age and corrode and has strong impact-resistance capability in outdoor use environment for a long time.

An object of the present, invention is to provide a chemical conversion surface, treatment solution, that is capable of forming a chemical conversion film with excellent corrosion resistance and designability on articles having aluminum or aluminum alloy surfaces by using steps similar to those of known chemical conversion treatments without using hexavalent chromium, trivalent chromium, fluorine, or other components that create a significant burden on the environment. The present invention relates to a chemical conversion treatment solution for aluminum or aluminum alloys, comprising an alkaline aqueous solution containing a permanganic acid compound and at least one metal oxygen acid compound selected from the group consisting of vanadic acid compounds, molybdic acid compounds, tungstic acid compounds, zirconic acid compounds, and niobic acid compounds.

The invention discloses a preparation method of a filtering material for adsorbing fluorine ions in water, and a preparation method, wherein Al-PAM, NaOH, diethylenetriamine, carbon disulfide, (NH4)2CO3, AlCl3 and a monomer acrylamide are used main raw materials, an adsorbent uses a metal hydroxide colloid as a base material, and a large number of polyacrylamide polymer branch chains are grafted on the surface of nanoparticles to obtain an organic-inorganic hybrid flocculating agent. According to the present invention, the raw materials are simple, the preparation process and the treatment process are simple, the chemical stability is high, the method is easy to implement in practical applications, and the product has excellent adsorption effect on fluorine ions in water.

The invention relates to C-9 conjugated sialic acid and application thereof, and relates to sialic acid. The C-9 conjugated sialic acid (FOO-Sia) is prepared from fluorine (F)-oxygenous (O) fusion heterocyclic substitutional groups and sialic acid (Sia). The molecular formula of the C-9 conjugated sialic acid (FOO-Sia) is C23H25FN2O11; the molecular weight is 524.4544. The C-9 conjugated sialic acid (FOO-Sia) can be applied to cancer cell migration inhibition. The C-9 conjugated sialic acid (FOO-Sia) can be expressed onto the surface of the tumor cells in a covalent connection mode as a macrophage Siglec-1 combination ligand for mediating the tumor immunity killing and transferring inhibition.

The invention discloses preparation of a water-soluble metal-organic framework composite material and application thereof in detecting the concentration of fluorine ions in water. The preparation comprises the following steps of: preparing a urea solution; adding aluminum trichloride into ultrapure water, carrying out ultrasonic treatment until the aluminum trichloride is completely dissolved, adding 2-aminoterephthalic acid under a stirring condition, and stirring until the 2-aminoterephthalic acid is completely dissolved to obtain a mixed solution; slowly dropwise adding the urea solution into the mixed solution, and stirring to obtain a reaction solution; carrying out heat preservation after the reaction solution is heated, cooling, centrifuging, washing precipitates, and carrying out centrifugal separation to obtain a first product; and dispersing the first product into N, N-dimethylformamide, stirring, carrying out centrifugal separation to obtain a second product, dispersing thesecond product into methanol, stirring, carrying out centrifugal separation, and carrying out vacuum drying to obtain the water-soluble metal organic framework composite material. The composite material is used for detecting the fluorine ion concentration in water. The fluorescent probe prepared by the preparation method has a nanosheet microstructure, is easy to store, and has excellent solubility and good stability in water.

A process for preparing the hydrocatalyst with high pore volume and specific surface area includes such steps as codepositing of the solution of metallic compounds, dewatering, pulverizing to obtain the main body of catalyst, sufficiently contacting with the ammonium compound of fluorine to make the fluorine to be combined with said main body of catalyst and adsorb the released ammonia by the millipores of catalyst powder, adding acidic solution or acidic adhesive, shaping, drying and calcining.

The invention discloses bis-fluoroquinolone thiadiazole urea N-methyl enoxacin derivatives as well as a preparation method and an application thereof. The general chemical structure formula of the derivatives is shown in the formula I as follows in the description. In the formula I, R is ethyl, cyclopropyl, fluoroethyl, an oxazine ring consisting of C-8 or a thiazine ring consisting of C-8; L is an independent Cl or F atom, 1-piperazinyl or substituted piperazine-1-yl or a nitrogen fused heterocyclic ring; X is CH, N or F-substituted C atom (F-C) or a methoxy substituted C atom (CH3O-C). The bis-fluoroquinolone thiadiazole urea N-methyl enoxacin derivatives realize organic combination of a bis-fluoroquinolone skeleton and the thiadiazole heterocyclic ring with functional urea pharmacophores, so that transition and superposition of different pharmacophores are realized, anti-tumor activity and selectivity of fluoroquinolone are increased, toxic and side effects on normal cells are reduced, and the derivatives can be taken as an anti-tumor active substance for developing anti-tumor drugs with novel structures.

A low-friction sliding material wherein 60% or more of the sliding surface of a sliding member is covered with fluorine fibers or composite fibers containing fluorine fibers, said fibers being arranged in parallel on at least the outermost surface of the sliding surface in a direction that is almost the same as the sliding direction. The present invention provides a low-friction sliding material which is free from the occurrence of fabric separation or the like extremely simply in comparison to conventional low-friction sliding materials.

The invention provides a method for simultaneously measuring the content of phosphorus and arsenic in gas mud and gas ash, and relates to the field of chemistry and chemical engineering. The method for simultaneously measuring the contents of phosphorus and arsenic in the gas mud and the gas ash comprises the following steps: (1) pretreating silicon dioxide, monatomic silicon and reductive metal elementary substances in a sample; (2) after stirring, oxidizing free carbon in the sample, decomposing the sample and removing fluorine; (3) filtering the mixed solution and fixing the volume; (4) preparing a mixed standard solution containing phosphorus and arsenic; (5) determining and calculating the content of phosphorus and arsenic; the method provided by the invention solves the problems of high difficulty in measuring the content of phosphorus and arsenic in the gas mud and the gas ash, large test result deviation and complicated operation, is convenient and quick, is easy to operate, is high in accuracy of the measured content of phosphorus and arsenic, and is suitable for measuring the content of phosphorus and arsenic in the substances in production and scientific research.

The invention discloses a method for preparing rutile type titanium dioxide powder from ammonium tetrafluorooxytitanate. The invention discloses a preparation method of a titanium dioxide photocatalyst, which belongs to the technical field of inorganic chemical industry, and comprises the following steps: S1, hydrolyzing (NH4) 2TiOF4 in strong ammonia water, filtering the hydrolyzed slurry to obtain metatitanic acid precipitate mixed with ammonia water, taking the metatitanic acid precipitate as a rutile type TiO2 precursor, concentrating the filtrate, and recovering ammonia in the concentrated filtrate; S2, adding zinc oxide into the metatitanic acid precipitate mingled with the ammonia water, and uniformly stirring and mixing the mixture; S3, carrying out first-stage calcination on the metatitanic acid precipitate mixed with zinc oxide at a set temperature to remove ammonia water and part of crystal water in the metatitanic acid precipitate; and S4, carrying out second-stage calcination transformation on the first-stage calcination product at a preset temperature to prepare the rutile type titanium dioxide powder. According to the method, the technical problems of ammonium removal, fluorine removal and calcination transformation are effectively solved; the method is reasonable in technological process design and simple to operate, and reagents can be recycled.