65 results about "Silver fluoride" patented technology

The invention discloses a magnetic adsorbent, a preparation method and an application of the magnetic adsorbent in desulfurization of fuel oil. The adsorbent is low in operation cost, good in adsorption effect and easy to regenerate, and the loss of the adsorbent is reduced. The magnetic adsorbent comprises a carrier and an adsorption ingredient, wherein the carrier is a core-shell composite microsphere; an inner core of the core-shell composite microsphere is made of ferroferric oxide; a shell is made of porous silicon dioxide; the size of the core-shell composite microsphere is 400-1000nm; the specific surface of the core-shell composite microsphere is 1000m<2> / g; the pore volume of the core-shell composite microsphere is 0.2-0.8cm<3> / g; the mesoporous diameter is 2-6nm; the adsorption ingredient is one or more of silver nitrate, silver fluoride and silver perchlorate; and the mole ratio of silver to silicon in the shell is 0.018-0.13.

The invention discloses a trifluoromethylthiolation reagent and its preparation method and use in an asymmetric trifluoromethylthiolation reaction. The trifluoromethylthiolation reagent is prepared from commercial silver fluoride, dibenzenesulfonimide and t-butyl hypochlorite as basic raw materials through mixing. The preparation method has short reaction steps, operation easiness and high yield. The novel trifluoromethylthiolation reagent has stable chemical properties, is environmentally friendly and is convenient for storage. The trifluoromethylthiolation reagent has high activity in an asymmetric trifluoromethylthiolation reaction and has a wide application prospect in many organic reactions.

The invention discloses a synthesis method of a disubstituted-fluoride imidazole ionic liquid. The method comprises the following steps; taking equal molar ratio of halogenated imidazole and silver fluoride, completely dissolving halogenated imidazole and silver fluoride into water, and mixing water solutions; carrying out replacement reaction so as to generate disubstituted-fluoride imidazole and a silver halide precipitate; fully and completely reacting with silver ions in a reaction solution for twice; filtering, precipitating and drying in vacuum, so as to obtain a pure final product. An AlCl3 electrochemical experiment proves that the disubstituted-fluoride imidazole ionic liquid obtained by the method can carry out electrolytic deposition on an aluminum coating, and no silver is separated out. The synthesis method of the disubstituted-fluoride imidazole ionic liquid is simple in technology, free of organic solvent, environment-friendly, high in final product quality, and free of waste.

The invention discloses an organic electroluminescent device comprising a conductive anode, a hole injection layer, a hole transport layer, a luminescent layer, an electron transport layer, an electron injection layer and a cathode. The electron injection layer comprises a first doped layer, a second doped layer, a third doped layer, a fourth doped layer and a fifth doped layer stacked in order. The first doped layer, the second doped layer, the third doped layer, the fourth doped layer and the fifth doped layer are made of mixture made by doping a doped material to a base material; the doped material comprises a silver compound and an alkali metal compound; the silver compound is silver iodide, silver sulfide, silver chloride, silver fluoride or silver bromide; the alkali metal compound is lithium fluoride, lithium azide, lithium nitride, cesium fluoride, cesium azide or cesium nitride. The invention further provides a production method of the organic electroluminescent device.

The invention belongs to the technical field of synthesis of organic compounds, and relates to a synthesis method of silver(I) trifluoromethanethiolate. According to the synthesis method of silver(I) trifluoromethanethiolate (CAS number: 811-68-7) in the invention, silver fluoride is used as a raw material and trifluoromethylthioester is used as a trifluoromethylthio source so as to synthesize silver(I) trifluoromethanethiolate. According to the method, trifluoromethylthioester is used as the trifluoromethylthio source and reacts with the silver fluoride in a solvent to generate silver(I) trifluoromethanethiolate, and a finished silver(I) trifluoromethanethiolate product is obtained after separation and purification. According to the synthesis method of silver(I) trifluoromethanethiolate, raw materials are easy to obtain, reaction reagents are easy to prepare and low in price, the synthesis cost of silver(I) trifluoromethanethiolate is remarkably reduced, synthesis conditions are mild, operation is easy, convenient and safe, industrial production is facilitated, the utilization rate of silver atoms is high, and environmental protection is realized.

The invention discloses a synthesis method of bis-heterocyclic molecules and a series of fluorescence functional molecules with a novel bis-heterocyclic structure. Under the action of a catalyst silver fluoride, an additive copper acetate and an additive silver fluoride, oxazole, thiazole, imidazole, or a derivative of them can undergo a cross-coupling reaction so as to obtain new bis-heterocyclic molecules. The compounds have significant fluorescence activity. The synthesis reaction involved in the invention has the characteristics of easily available raw materials, and simple and efficient operation.

A production method of high purity silver tetrafluoroborate, capable of producing silver tetrafluoroborate (AgBF4) at purity higher than the conventional, without using an organic solvent. The production method of the present invention is characterized in that the method comprises the step of: reacting silver fluoride with boron trifluoride in the presence of anhydrous hydrofluoric acid. Boron trifluoride is delivered into a solution obtained by dissolving or suspending silver fluoride in an anhydrous hydrofluoric acid solution.

The invention relates to a preparation method of silver tetrafluoroborate, which comprises the steps of mixing and reacting a fluoboric acid source and silver salt in a reaction medium to obtain the silver tetrafluoroborate, wherein the fluoboric acid source is selected from at least one of tetrafluoroborate and tetrafluoroboric acid; and the reaction medium is a mixed solvent of a first organic solvent and water or water, and the first organic solvent is selected from at least one of diethyl ether, nitromethane and methylbenzene. The preparation method is wide in raw material applicability, the raw materials are low in toxicity and easy to obtain, the problem that the toxicity is too high when silver fluoride and boron trifluoride serve as reaction raw materials is solved, the reaction can be carried out at the room temperature, the reaction condition is mild, the reaction is easy to operate, the needed time is short, the requirement for equipment is low, and the production safety problem is guaranteed.

The invention discloses a titanium alloy plate and a processing method thereof, and belongs to the technical field of alloys. The titanium alloy plate comprises the following raw materials: Ti, Al, V,Fe, silver fluoride, zirconia fiber and silicone, and the proportion of silver fluoride to silicone to zirconia fiber is (0.04-0.06): (0.02-0.04): (0.01-0.03). The titanium alloy plate processing method comprises melting, hot rolling, cold rolling and other steps. According to the titanium alloy plate and the processing method thereof, silver fluoride, silicone and zirconia fiber are used as a reinforcing system, and the mechanical properties and corrosion resistance of the titanium alloy plate are improved.

The invention discloses a diammine silver fluoride modified aluminum alloy anode oxide film nickel-free sealant. The sealant is prepared from, by weight, 8-8.5 parts of magnesium acetate, 19-20 parts of triethanolamine, 3-3.2 parts of ammonium acetate, a defined amount of deionized water, 0.3-0.5 part of sodium oleate, 0.6-0.7 part of salicylic acid, 0.4-0.5 part of polyvinylpyrrolidone, 0.7-0.9 part of diammine silver fluoride, 0.4-0.5 part of lithium silicate, 2.6-2.8 parts of dodecafluoroheptyl-propyl-trimethoxysilane, 1-1.2 parts of tetrabutyl titanate, 45-48 parts of ethanol, 8.6-9 parts of ammonium hydroxide and 0.3-0.4 part of fluorine-containing surfactant. According to the sealant, by using sodium oleate, salicylic acid, polyvinylpyrrolidone and diammine silver fluoride for conducting further modification, the sealant is good in penetrability, high in hole sealing efficiency and good in sealing effect, thereby the acid and alkali resistance of an oxide film are greatly improved, and meanwhile the abrasion resistance is improved.

The invention discloses a titanium-carbide-coated straw-based activated carbon composite electrode material. The composite electrode material is characterized by being prepared from raw materials in parts by weight as follows: 2-3 parts of nitric acid, 1-2 parts of silicon dioxide, 2-3 parts of lithium acetate, 1-2 parts of ammonium hexachloroiridate, 1-2 parts of chromium trifluoride, 1-2 parts of silver fluoride, 1-2 parts of a silane coupling agent KH-550, 3-5 parts of titanium carbide, 3-5 parts of a PAN (polyaniline) composite material, 1000-1200 parts of straw, 3-5 parts of anhydrous potassium hydroxide and 5-10 parts of deionized water. The PAN composite material has the advantages of low price, high charge density and the like and can improve electrical conductivity and electrical storage performance after added to the electrode material; the titanium carbide has high hardness, wear resistance and conductivity and effectively increases the surface utilization rate, reduces the resistance and improve the specific capacity of the electrode material after added to the electrode material.

The invention discloses an antibacterial natural silk fiber product and a preparation method thereof; the preparation method comprise the steps of preparing a formic acid solution, wherein the mass concentration of the formic acid is 60-90%; then adding silver salt and inorganic titanium salt water into the formic acid solution, wherein the silver salt is one or more of silver nitrate, silver chloride, silver bromide and silver fluoride, and the inorganic titanium salt water is titanium tetrachloride; and slowly stirring to obtain a treatment solution, wherein in the treatment liquid, the massconcentration of the silver salt is 0.5-15%, and the mass concentration of the inorganic titanium salt water is 0.5-15%; cleaning natural silk fibers; then soaking the natural silk fibers in warm water for a period of time before airing; then soaking the natural silk fibers in a surfactant for a period of time, wherein the surfactant is a quaternary ammonium salt solution; soaking the treated natural silk fiber product in the treatment solution, and allowing to stand in the dark for 1-2 days; and then washing and drying the natural silk fiber product to obtain the antibacterial natural silk fiber product.

The invention discloses a preparation method of a high-performance carboxyl-terminated low-molecular-weight fluorine-containing polymer, belonging to a polymer preparation method. According to the invention, a carboxyl-terminated low-molecular-weight fluorine-containing polymer containing double bonds in a chain and prepared by an oxidative degradation method is used as a raw material, a fluorinated addition reaction system and method for the fluorine-containing polymer are created, N-fluoro-N'-(chloromethyl)triethylenediamine bis(tetrafluoroborate) or a hydrogen fluoride complex and the likeare used as fluorinating reagents, lithium aluminum hydride or borohydride is used as a hydrogenation reagent, silver fluoride and the like are used as nucleophilic reagents, and N-bromosuccinimide and the like are used as electrophilic reagents, so a fluorine content is increased while saturation of double bonds in a chain is realized, and the thermal stability of the polymer is greatly improved.The method is simple in process, mild in reaction conditions and high in efficiency; a saturation rate reaches 80% or above, the fluorine content of the produced polymer is higher than 66%, and the polymer can serve as a fluorine-containing precursor of a functional polymer and an additive manufacturing (3D printing) raw material and can also be applied as a high-performance adhesive, a joint mixture, a coating, a processing compounding agent and the like.

A medical device or solution for treating dental discomfort by at least partially occluding dental tubules is disclosed. The medical device or solution contains a polysaccharide or other biocompatible polymer with an antimicrobial metal, antimicrobial metal compound, or antimicrobial metal ion bound to a biopolymer. The medical device or solution further comprises at least one soluble antimicrobial. The soluble antimicrobial may be a water soluble metal iodide, water soluble metal fluoride, or a water soluble metal chloride encompassed with the nanogel. The medical device may be a solution of a chitosan with a nanoparticle of silver fluoride on the chitosan and at least one of a sodium fluoride or silver fluoride. The solution may be water based solution. Methods of applying the medical device or solution are also disclosed.

The invention discloses A method for treating lithium iron phosphate, a cathode material of power lithium battery which is characterized in that that surface of the lithium iron phosphate is coated with carbon, and comprises the following step of: S1, selecting lithium iron phosphate particles, and selecting 3000-3600 mesh; S2, putting the selected lithium iron phosphate particles into a magneticseparator to remove the iron element in the lithium iron phosphate particles; S3, passing the magnetically separated lithium iron phosphate particles into a mixed solution of silver fluoride and hydrogen fluoride, replacing the active metal impurities, acidifying the metal oxides, filtering, and drying to obtain an intermediate product; S4, separating the intermediate product obtained in S3 by a color sorter; S5, pre-sintering the obtained lithium iron phosphate particles in S4; S6. Sintering the S5 pre-sintered lithium iron phosphate particles and graphene under non-oxidation conditions, andcooling to obtain carbon-coated lithium iron phosphate material. Reduce the impurity content of LiFePO4 cathode material, improve the quality of lithium battery.

The invention relates to a preparation method of fluorocarbon polyether compound, which comprises the following steps that: fluorocarbon polyether carboxylic acid and metal fluoride are added into a reaction kettle, after vacuum and nitrogen replacement, excess fluorine or excess mixed gas of fluorine and inert gases are introduced into the reaction kettle, then the temperature is raised to 80-260 DEG C, after the reaction is finished, the metal fluoride is filtered and the unreacted fluorine and a small quantity of low-boiling-point impurities are removed by distillation, so that the fluorocarbon polyether compound is obtained, wherein the metal fluoride is selected from one or more of antimony trifluoride, silver fluoride and cobalt fluoride, and the feed mole ratio of the fluorocarbon polyether carboxylic acid to the metal fluoride to the fluorine is 1.0: (0.005-1): (1.1-5). Through the adoption of the preparation method, the final product can be obtained through a simple one-step reaction, no fluorocarbon polyether with hydrogen atoms is detected in the final product, and the product has excellent high-temperature stability. Compared with the prior art, on the condition that the obtained products have same high-temperature stability, the preparation method provided by the invention is simpler and is much lower in cost.

The invention relates to a titanium alloy composite welding process based on small hole TIG and activated TIG, and an active agent. The active agent belongs to fluoride components and comprises analytically pure calcium fluoride, sodium fluoride, aluminum fluoride and silver fluoride. According to the titanium alloy composite welding process based on the small hole TIG and the activated TIG, the developed active agent is used for coating or being sprayed to welding surfaces before welding, the arc stiffness can be increased in the welding process, the arc penetration can be improved, and the effects that the melting width is reduced, the volume of a welding seam and a heat affected zone is reduced and the welding deformation effect is reduced are achieved, and meanwhile, welding air holescan be inhibited to a certain extent.

The invention belongs to the technical field of conductive ink and discloses silver nanowire transparent conductive ink as well as a preparation method and application thereof. The conductive ink is composed of the following components in parts by mass: 50-75 parts of a polymer, 1-2 parts of a defoaming agent, 0.5-1 part of a leveling agent, 0.5-1 part of a dispersant and 23-49 parts of silver nanowires. The silver nanowires are prepared by the following steps: (1) dispersing a silver-containing compound and a dispersant into water so as to obtain a mixed solution, wherein the silver-containing compound is more than one of sliver diammonium hydroxide, silver fluoride and silver perchlorate; (2) heating the mixed solution, adding silver-containing precipitate, dropping a reducing agent solution, heating to carry out reactions after dropping is completed, centrifuging, and washing, thereby obtaining the silver nanowires. The conductive ink disclosed by the invention is a transparent conductive system, is free of solvent volatilization, is environmental-friendly, is high in drying efficiency, low in resource consumption, low in sheet resistance and meanwhile high in conductivity, flexibility and adhesion property, and the light transmittance of the conductive ink is greater than 85%.

A conductive silver paste used in the preparation process of solar cells, comprising an organic carrier, a conductive material, a glass medium and a silver precursor, the conductive material, the glass medium and the silver precursor are respectively dispersed in the organic In the carrier, the weight percentage of the silver precursor in the conductive silver paste is between 0.01wt.% and 10wt.% and is selected from silver monoxide, silver oxide, silver nitrate, silver iodide, silver bromide, chlorine The group consisting of silver chloride and silver fluoride. Through the matching of the silver precursor, the organic carrier, the conductive material and the glass medium and the adjustment of the weight percentage, the shrinkage rate during electrode formation can be adjusted, the diffusion of the conductive silver paste can be avoided, and the preparation process is improved. Rate.

The invention provides a needle-shaped aluminum oxide carrier. Porous silicon is adopted as a template, the surface is coated with aluminum oxide and roasted, and the silicone template is removed withfluorine gas to obtain the needle-shaped aluminum oxide carrier. The needle distribution of the needle-shaped aluminum oxide is 20-40 pieces / [mu]m<2>; the needle tips are 15-25 nm, the distance between every two adjacent needle tips is 130-150 nm, the aluminum oxide needle height is 5-8 [mu]m, the specific surface area is 10-13 m<2> / g, the aluminum oxide carrier is prepared by a template method,and silver or silver fluoride particles are attached to the vicinity of the tips of the aluminum oxide.

The invention discloses a finishing process of a wool hat. The finishing process comprises the following steps: soaking the wool hat into water and performing ultrasound treatment, so as to obtain a primarily treated wool hat; after allyl diethyl ester is emulsified, adding zinc oxide modified by a silane coupling agent KH-570 into the emulsified allyl diethyl ester, regulating the pH value, adding benzoyl peroxide after temperature rise to obtain mixed solution, and soaking the primarily treated wool hat into the mixed solution, so as to obtain a secondarily treated wool hat; mixing ethanol and acetic acid, adding butyl titanate and silver fluoride and tetrabutylammonium fluoride into the mixed solution, and placing the mixed solution at room temperature, so as to obtain a material A; adding salicylic acid and arginine into water, adding the material A into the water, and soaking the material A at room temperature, so as to obtain modified nanometer titanium dioxide; adding phosphorous doped silica sol, glutamine transaminase, chitosan, sodium silicate, sodium lauryl sulfate, hexa(4-aminophenoxy)cyclotriphosphazene, the modified nanometer titanium dioxide, catechin, sulfo-beta-cyclodextrin and a coupling agent into the water and performing ultrasound treatment, so as to obtain a finishing agent; soaking the secondarily treated wool hat into the finishing agent for padding, andwashing, drying and baking the wool hat.

The invention discloses a 6-series aluminum alloy used for a structural part of an automobile and a preparation method, which belong to the technical field of alloys. The 6-series aluminum alloy usedfor the structural part of the automobile comprises the following raw materials: silicon, iron, copper, manganese, magnesium, chromium, zinc, titanium, lead, sodium, gallium, aluminum, silver fluoride, phosphorus and sulfur. A preparation method of a sheet metal part of the automobile comprises the following steps: melting, hot rolling, cold rolling, solid solution, cutting and so on. In the invention, silver fluoride, phosphorus and sulfur are adopted as a reinforcing system, so that the mechanical property and the corrosion resistance of the 6-series aluminum alloy used for the structural part of the automobile are improved.

The invention discloses an anti-bacterial and anti-felting finishing method for a woolen cap. The method comprises steps as follows: the woolen cap is soaked in an aqueous solution of a penetrating agent JFC and subjected to ultrasonic treatment and drying, then the woolen cap is added to hydrogen peroxide and subjected to soaking, washing and drying, and a pretreated woolen cap is obtained; ethanol and acetic acid are mixed, butyl titanate is added, silver fluoride and tetrabutylammonium fluoride are added, the mixture is placed at the room temperature and then washed to be neutral, filteringand drying are performed, and a material A is obtained; salicylic acid and arginine are added to water, the material A is added, the mixture is soaked at the room temperature, filtered, washed and dried, and modified nano titanium dioxide is obtained; organosilicon quaternary ammonium salt, protease, chitosan, sodium silicate, lauryl sodium sulfate, modified nano titanium dioxide, polycarbamouylsulfonate esters, catechin, sulfonic-beta-cyclodextrin and a coupling agent are added to water, a mixed solution is subjected to ultrasonic treatment, and a finishing agent is obtained; the pretreatedwoolen cap is soaked in the finishing agent to be subjected to padding, cleaning, drying and braking, and the anti-bacterial and anti-felting finished woolen cap is obtained.

The invention discloses a technology of producing sulfur hexafluoride by adopting a sulfur tetrafluoride oxidation method. The technology comprises the following steps of: firstly, reacting cupric fluoride, silver fluoride or mercuric fluoride or mixture of the cupric fluoride, the silver fluoride or the mercuric fluoride with molten sulfur to obtain sulfur tetrafluoride and converting metal fluoride into sulphide; secondly, oxidizing the sulfur tetrafluoride with oxygen or air at about 500DEG C to obtain the sulfur hexafluoride and a byproduct of sulfur dioxide; and finally, reacting the metal fluoride fluorine hydride in the presence of oxygen and converting the mixture into fluoride for recycling; and absorbing the byproduct of sulfur dioxide by using a sodium hydroxide solution and converting the mixed solution into sodium sulfite for recycling. The process is reasonable, simple in production and is a most simple and convenient ideal technology for preparing the sulfur hexafluoride.

he invention provides compositions and methods that comprise encapsulated silver diamine fluoride or other antimicrobial materials for use in treatment of dental caries, for example.

The invention relates to a preparation method of fluorocarbon polyether compound, which comprises the following steps that: fluorocarbon polyether carboxylic acid and metal fluoride are added into a reaction kettle, after vacuum and nitrogen replacement, excess fluorine or excess mixed gas of fluorine and inert gases are introduced into the reaction kettle, then the temperature is raised to 80-260 DEG C, after the reaction is finished, the metal fluoride is filtered and the unreacted fluorine and a small quantity of low-boiling-point impurities are removed by distillation, so that the fluorocarbon polyether compound is obtained, wherein the metal fluoride is selected from one or more of antimony trifluoride, silver fluoride and cobalt fluoride, and the feed mole ratio of the fluorocarbon polyether carboxylic acid to the metal fluoride to the fluorine is 1.0: (0.005-1): (1.1-5). Through the adoption of the preparation method, the final product can be obtained through a simple one-step reaction, no fluorocarbon polyether with hydrogen atoms is detected in the final product, and the product has excellent high-temperature stability. Compared with the prior art, on the condition that the obtained products have same high-temperature stability, the preparation method provided by the invention is simpler and is much lower in cost.

The invention discloses an energy bone china vacuum cup and a preparation process thereof. The raw materials of the energy bone china vacuum cup comprise the following components in parts by weight: 50-60 parts of clay, 20-25 parts of bovine bone meal, 8-10 parts of hexacyclic stone powder, 8-10 parts of medical stone powder, 6-10 parts of titanium dioxide, 1.5-2 parts of lanthanide rare earth composite salt and 1.5-2 parts of nano-silver ion materials, wherein the lanthanide series rare earth composite salt is one or a combination of two of lanthanide series rare earth magnesium phosphate orlanthanide series rare earth silver fluoride, and the nano-silver ion material is a nano-silver ion-containing material obtained by mixing nano-silver powder into a fiber material and carrying out drying treatment, and the invention relates to the technical field of bone china vacuum cups. According to the energy bone china vacuum cup and the preparation process thereof, the manufactured bone china vacuum cup contains the hexacyclic stone powder and the medical stone powder, negative ions can be generated, the negative ion concentration detection numerical value can reach 800-1000 / cm < 3 >, blood circulation is promoted, water quality is activated, silver ions have the sterilization and disinfection effects, escherichia coli and staphylococcus aureus can be effectively killed, and the goodantibacterial effect is achieved.

The invention discloses an antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment. The antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment is prepared from, by weight, 2 to 2.3 parts of an aluminum pigment, 3 to 3.5 parts of TEOS, 4.5 to 5 parts of ammonium hydroxide, an appropriate amount of absolute ethyl alcohol, 5 to 5.5 parts of distilled water, 0.4 to 0.5 part of diammine silver fluoride, 0.6 to 0.8 part of lanthanum itaconic acid, 0.2 to 0.3 part of guanidine carbonate, 0.3 to 0.4 part of nano ZnWO4, 0.4 to 0.5 part of trifluoroethyl acrylate, and 0.03 to 0.04 part of dicumyl peroxide. According to a preparation method, diammine silver fluoride, lanthanum itaconic acid, and guanidine carbonate are subjected to mixing modification, and the surface of diammine silver fluoride is grafted with lanthanum itaconic acid, so that the compatibility of diammine silver fluoride with aluminum powder coating is increased, water resistance of aluminum powder is improved, corrosion resistance is improved, the antibacterial water-resistant nano silicon dioxide-coated modified thin-sheet aluminum powder pigment is provided with excellent antibacterial performance, and heat resistance of the aluminum powder coating is improved by lanthanum itaconic acid.