827 results about "Fluorine containing" patented technology

The application relates to an acetic acid-regulated sodium metaaluminate-doped calcium-aluminum-phosphorus defluorination material based on eggshell, a preparation method and application thereof, and belongs to the technical field of defluorination water treatment. The method is as follows: eggshell powder, a phosphorus source and sodium metaaluminate are added into a mixed solvent composed of acetic acid and water, mixed and dispersed to form a uniform reaction system; the pH of the reaction system is adjusted to be alkaline; the adjusted reaction system is transferred into a closed reaction container to perform a solvothermal reaction; after the reaction is completed, the obtained solid product is separated and washed; and the washed product is dried. In the application, acetic acid is used for regulating the dissolution and conversion of the eggshell calcium source and the material crystallization process, sodium metaaluminate is used for introducing aluminum components and adjusting the material structure, so as to construct an Al-Ca-P synergistic defluorination system. The obtained material can be used for removing fluorine ions in fluorine-containing water bodies. The application has the dual characteristics of resource utilization of waste eggshells and preparation of defluorination functional materials, and has the advantages of simple process, easily-obtained raw materials and high application value.

The application discloses a potassium fluorotantalate crystallization purification method, and relates to the technical field of tantalum hydrometallurgy and fluorotantalate crystallization purification. The method comprises the following steps: filtering a tantalum-containing fluorine acid solution, adding a potassium source and a tantalum-niobium separation type composite crystallization regulator, stirring and complexing, seed induction, controlled cooling crystallization, graded removal of the regulator, solid-liquid separation, and potassium fluoride containing fluorine acid washing to obtain primary purified potassium fluorotantalate crystals, and then redissolving the primary purified potassium fluorotantalate crystals in a fluorine-containing acid solution, correcting the K / Ta molar ratio, repeatedly regulating and crystallizing, graded removal of the regulator, washing, and drying to obtain high-purity potassium fluorotantalate. The regulator can reduce the entrainment of niobium impurities and reduce the residual amount of the regulator itself, thereby improving the purity of the product and the Ta yield.

The present application relates to the field of polyurethane, in particular to a kind of fluorine-free high-efficiency carbon-forming flame-retardant polyether polyurethane and preparation method thereof.Flame-retardant polyether polyurethane includes the following components by mass fraction: thermoplastic polyether polyurethane matrix 75-87 parts, halogen-free fluorine-free catalytic carbon composite flame retardant 13-18 parts, functional additive 0-5 parts.The present application realizes high-efficiency flame retardation under very low addition amount through synergistic effect of phosphorus-nitrogen flame-retardant system and catalytic carbon system, only 13-18 parts of flame retardant addition amount is needed, 0.5-3.0mm wall thickness product can reach UL1581 VW-1 highest flame-retardant grade, completely no dripping, solve the industry pain point of traditional halogen-free flame-retardant system high addition amount, thin-wall flame-retardant substandard, rely on fluorine-containing additive anti-dripping, perfect adaptation to the flame-retardant demand of thin-wall product such as electric wire and cable.

This invention relates to an air electrode material and its preparation method. The preparation method includes: using metal salts of Ce, Pr, La, Ba, and Sr, metal salts of Co, and a fluorine source as raw materials, and preparing a fluorine-containing perovskite precursor according to a stoichiometric ratio; pretreating the precursor and then sintering it to obtain a composite powder; the composite powder includes a fluorine-containing perovskite main phase and a fluorine-containing CeO2 nanophase; pulverizing and sieving the composite powder to obtain air electrode powder; the fluorine-containing perovskite main phase is an A-site high-entropy perovskite oxide; the fluorine-containing CeO2 nanophase is precipitated through the self-assembly of some Ce elements during sintering; the fluorine-containing CeO2 nanophase is dispersed inside the main phase grains or at grain boundaries, and forms a strongly coupled heterogeneous interface with the main phase. This invention solves the technical problems of poor surface exchange activity, bulk diffusion transport, and long-term stability of existing air electrodes.

The application relates to the technical field of fluorine-containing wastewater treatment equipment, and discloses a fluorine-containing wastewater treatment device for praseodymium neodymium fluoride rare earth processing, which comprises a wastewater treatment tank, the top of the wastewater treatment tank is provided with a water inlet valve; a filtering and cleaning device comprises a water conveying pipeline vertically penetrating through the middle part of the top end of the wastewater treatment tank, the top end of the water conveying pipeline is communicated with the water inlet valve, the bottom of the water conveying pipeline is circular, uniform and horizontally provided with a plurality of water filtering channels, the bottom of each water filtering channel and the side far away from a water receiving disc are provided in an open mode, the bottom of the water filtering channel is covered with a first filter membrane, and the side far away from the water receiving disc of the water filtering channel is covered with a second filter membrane; when fluorine ions in fluorine-containing wastewater are separated and filtered through a filter membrane assembly, the filter time is effectively prolonged, the separation effect of the fluorine ions is improved, the surface of the filter membrane assembly is cleaned, and the effect of rare earth impurities on the membrane holes of the filter membrane is avoided.

This invention relates to the field of coating technology, specifically to a protective coating for stone surfaces with good waterproof performance and its preparation method, comprising the following steps: S1. Treating microcrystalline cellulose to obtain product 1 for later use; S2. Reacting product 1 from step S1 with titanium tetrachloride to obtain nano-titanium dioxide for later use; S3. Mixing the nano-titanium dioxide from step S2 with sodium oleate and adjusting the pH to 6.5-7.5 to obtain product 2 for later use; S4. Performing surface synergistic hydrophobic modification treatment on product 2 to obtain functional filler. This invention discloses a protective coating for stone surfaces with good waterproof performance, using fluorinated acrylic resin as the base resin, incorporating functional filler, and combining it with a curing agent, mixed solvent, defoamer, and leveling agent. Through the synergistic effect between the components, this protective coating for stone surfaces possesses good waterproof performance as well as good resistance to ultraviolet aging and acid corrosion.

This invention relates to the field of solar cell technology, and in particular to a self-assembled monolayer based on a fluorinated alcohol solvent, its preparation method, and a solar cell. The method involves adding a fluorinated alcohol as a co-solvent to a solution of the self-assembled monolayer material, which is then deposited onto the surface of a metal oxide electrode to construct a hole transport layer. The hydroxyl groups of the fluorinated alcohol can form hydrogen bonds with the phosphorus-oxygen double bonds in the phosphonic acid groups, reducing the electron density of the phosphorus atoms and thus weakening the chemisorption barrier of the self-assembled monolayer on the electrode surface, promoting the formation of a uniform and dense monolayer film. The resulting interface layer effectively suppresses interface defects and promotes hole extraction. Organic solar cells prepared using this method exhibit excellent performance in terms of energy conversion efficiency, stability, and large-area processing adaptability. This invention features a simple process, low cost, and good reproducibility, and has promising prospects for industrial application.

This application relates to the technical field of reactive dyes, specifically to a photochromic red fluorine-containing reactive dye, its preparation method, and its application. The general structural formula of this photochromic red fluorine-containing reactive dye is as follows: [Formula omitted for brevity]. Wherein, R1 and R2 are -H, -SO3M, -CH3, -COOM, -NO2, or -NHCONH; R3 is -Cl or -SO3M; and M is Na, K, or Li. The reactive dye provided in this application exhibits good wash fastness, rubbing fastness, chlorine fastness, and good solubility on cotton fabrics, while also possessing excellent light fastness and superior fixation rate on cotton fabrics during medium-temperature dyeing.

The present invention aims to provide polyimides and molded articles such as films that are environmentally safe, soluble in organic solvents, and have excellent transparency. [Solution] The above problem can be solved by a polyimide having a tetracarboxylic dianhydride component and a diamine component, wherein the diamine component includes a fluorine atom-containing diamine having a CF3-O- structure selected from 2,2'-bis(trifluoromethoxy)benzidine, 3,3'-bis(trifluoromethoxy)benzidine, and / or 2,3'-bis(trifluoromethoxy)benzidine, and the tetracarboxylic dianhydride component includes a tetracarboxylic dianhydride having a fluorene structure and an alicyclic tetracarboxylic dianhydride.

The device comprises a positive electrode layer (14), a negative electrode layer (12), and an electrolyte layer (15) that conducts lithium ions between the positive and negative electrode layers. The positive electrode layer is provided with a positive electrode active material (14a) containing Mn in its composition and an oxide-based ion conductor (14b) having lithium ion conductivity. The electrolyte layer contains a fluorine-containing lithium salt containing fluorine atoms and a solvent capable of dissolving the fluorine-containing lithium salt. The ion conductor is a dielectric that can promote the dissociation of lithium ions from the fluorine-containing lithium salt.

This invention discloses a green synthesis method for acid-base bifunctional molecular sieves and its application. The method constructs acid-base sites in a one-step synthesis, yielding a molecular sieve catalyst containing acid-base bifunctional sites. This molecular sieve exhibits high activity and stable performance, and can be used as a catalyst to catalyze the isomerization of glucose to fructose. It significantly improves conversion efficiency in reactions catalyzing the isomerization of high-concentration glucose to fructose or its conversion to methyl lactate. Furthermore, this synthesis method avoids the use of environmentally harmful fluorinated mineralizers and inorganic acids, solving the problems of complex, time-consuming, and environmentally unfriendly synthesis processes of existing acid-base bifunctional molecular sieves. It also addresses the issues of low reaction efficiency and low selectivity of existing catalysts in reactions catalyzing the conversion of high-concentration glucose.

The application discloses a fluorine-containing polymer modified single-layer graphene oxide and a preparation method thereof. The graphene oxide is exfoliated into single layers in an organic solvent under ultrasonic assistance and nitrogen protection; meanwhile, a fluorine-containing polymer or a perfluoro acid anhydride containing active reaction end groups is used as a modifier to react with oxygen-containing groups such as hydroxyl groups on the surface of the graphene oxide, so that the fluorine-containing polymer modified single-layer graphene oxide is prepared. The preparation method of the fluorine-containing polymer modified single-layer graphene oxide has the advantages of simple process, complete reaction, mild conditions, controllable product structure and the like. The obtained fluorine-containing polymer modified single-layer graphene oxide can be highly dispersed in various solvents and matrices and keep a good single-layer state, effectively overcomes the problems of easy agglomeration and difficult dispersion of existing (modified) graphene oxides, and can be widely applied to the fields of design and preparation of graphene oxide-based high-performance composite materials and the like.

This utility model discloses an energy-saving device for treating fluoride-containing wastewater, including a sedimentation tank, a mixing tank on the side of the sedimentation tank, and a mixing component on the inner side of the mixing tank. The mixing component includes a support frame, which is rotatably mounted inside the mixing tank. Multiple spiral mixing frames are rotatably connected to the support frame, and a main mixing shaft is fixedly connected to the inner side of the support frame. A mixing fan blade is installed at the bottom of the main mixing shaft. A packing layer is installed inside the sedimentation tank, and a sludge pump is installed at the bottom of the sedimentation tank. An effluent tank is located on the side of the sedimentation tank away from the mixing tank. This design allows the mixing tank to occupy a small area. The rotation of the support frame drives the multiple spiral mixing frames to move in a circular motion, while the mixing fan blade at the bottom of the main mixing shaft also participates in the mixing. This multi-dimensional mixing method can quickly and thoroughly mix the fluoride-containing wastewater with the treatment agent, significantly shortening the mixing time and helping to more effectively remove fluoride ions from the wastewater.

A cured coating film having an excellent water and oil repellency, an excellent slipperiness, and excellent chucking properties can be formed by a surface treatment agent that contains: a fluoropolyether group-containing polymer having at least one group represented by formula (1) at at least one terminal of the molecule (In the formula, Y is a divalent organic group containing an o-, m-, or p-phenylene group; R is a C1-4 alkyl group or a phenyl group; each X is independently a hydroxyl group or hydrolyzable group; and a is 2 or 3.), and / or a partial (hydrolysis) condensate of this polymer.

A photoresist composition comprising one or more non-solvent base-insoluble base materials present in a combined amount greater than 50 wt% based on the total solids of the photoresist composition; a non-polymeric ionic photoacid generator compound comprising an anion and an iodonium or sulfonium cation, wherein the anion is represented by formula (1); a photodecomposable quencher, a basic quencher, or a combination thereof; and a solvent, wherein Ar 1 is a monocyclic or polycyclic C 3‑60 aromatic group; L 1 is a single bond or one or more divalent linking groups, wherein L 1 contains no fluorine; Z 1 comprises an anion stabilizing group, wherein Z 1 is configured to form an intramolecular non-covalent bond with a sulfonate anion group to form a ring having 5 to 8 atoms; and the remaining substituents are as defined herein. (1)

Provided herein are a monomolecular compound for self-assembly, a self-assembled monolayer using same, a current collector using same, an all-solid-state battery using same, and a manufacturing method therefor, wherein the monomolecular compound comprises: a functional group containing fluorine (F); a spacer including CxF2x (6≤x≤12) or CxF2x−4H4 (6≤x≤12); and a reactive group containing phosphorus (P) or silicon (Si).

This invention discloses a green synthesis process for 2-chloropyranose-1-yl)-4'-ethoxydiphenylmethane, belonging to the field of pharmaceutical intermediate preparation. The method involves forming a mixture of a substrate in the protected state of Formula I and a reducing agent containing siloxane bonds, which is continuously fed into a microreactor loaded with a confined-domain MOF (Metal-Oxide-Fractions) supported catalyst for room-temperature reduction. The MOF catalyst has a rigid pore size of 1.2~2.5 nm and internally coordinates and anchors metal trifluoromethanesulfonate. This invention utilizes the limiting confinement effect of rigid channels to lock the substrate conformation, blocking the surface attack of reactants and achieving extremely high configuration selectivity. Simultaneously, the efficient mass transfer of the continuous flow microchannel and the online infrared spectroscopy closed-loop control system completely eliminate the need for traditional cryogenic conditions, remove highly corrosive fluorine-containing waste liquid, significantly reduce synthesis costs, and achieve efficient, green, and stable continuous industrial production of this core intermediate.

The application relates to the technical field of batteries, in particular to a pole piece, a battery containing the pole piece, a battery preparation method and electronic equipment. The pole piece comprises a current collector and an electrode active material layer arranged on at least one surface of the current collector, the electrode active material layer has a porous structure, the electrode active material layer comprises an electrode active material, a binder and an interface modifier, the interface modifier comprises a fluorine-containing chain segment and an anchoring group used for anchoring on the surface of the electrode active material. The pole piece can improve electrode-electrolyte interface wettability and reduce interface impedance.

This invention relates to the field of semiconductor process chamber cleaning technology, specifically to a semiconductor process chamber cleaning gas composition based on HFO-1447fz, a remote plasma cleaning method, and a closed-loop control method. The main cleaning gas is HFO-1447fz (CAS134190-34-8), accounting for 30% to 70% of the total molar fraction of the composition; the co-gas is selected from one or two of CF3I and C2F5I, accounting for 5% to 25% of the total molar fraction of the composition; the auxiliary regulating gas is selected from one or more of He, Ne, and Kr, accounting for 15% to 55% of the total molar fraction of the composition; the content of fluorine-containing unsaturated impurity compounds containing C=C or C≡C bonds in the cleaning gas composition is ≤0.08 mol. This invention uses HFO-1447fz as the main cleaning gas, combined with CF3I, C2F5I synergistic gases and rare gases for auxiliary regulation, to form a highly efficient cleaning system. The special molecular structure of HFO-1447fz can generate highly active fluorine radicals after plasma activation, which, together with the catalytic effect of iodine radicals, improves the removal rate of silicon-based dielectric deposits.

This invention belongs to the field of organic electroluminescence technology, specifically relating to a luminescent crystal material, its preparation method and application, and laser-prefabricated luminescent devices. The preparation method of the luminescent crystal material includes the following steps: a first reaction is carried out with an amino-containing spirodifluorene monomer, a halogenated nitrogen heterocyclic compound, and a fluorinated organic acid to obtain a first intermediate; the first intermediate undergoes a second reaction with a gallium halide to obtain a second intermediate; a third reaction is carried out with a carbazole derivative, a naphthenic acid derivative, a luminescent bandgap modulating organic compound, and the second intermediate to obtain a third intermediate; the third intermediate is dissolved in an organic solvent for a fourth reaction, followed by multi-directional condensation separation; the material is collected in a pre-designed receiving dish in a 90-110°C condensation zone, and then subjected to a fourth post-processing to obtain the luminescent crystal material. The prepared luminescent crystal material exhibits high quantum efficiency, excellent thermal stability, and achieves balanced red, green, and blue performance.

A compound having a molecular weight of 500 to 5,000, the compound being composed of hydrogen atoms, carbon atoms, and heteroatoms, the heteroatoms being at least one selected from the group consisting of oxygen atoms, sulfur atoms, fluorine atoms, and silicon atoms, the compound having: one or more alicyclic structures, one or more aromatic ring structures directly bonded to the alicyclic structures, and one or more monovalent substituents Ms directly bonded to the aromatic ring structures, the monovalent substituents Ms being at least one selected from the group consisting of monovalent fluorine-containing aliphatic groups, monovalent fluorine-containing sulfur-containing groups, monovalent siloxane groups, and monovalent saturated hydrocarbon groups.

One embodiment of the present invention provides a photodetector comprising a light-absorbing layer that is formed between an upper electrode and a lower electrode and contains a fluorine-based organic polymer and colloidal quantum dots. According to the embodiment, using the newly proposed light-absorbing layer enables reducing surface defects of the quantum dots in the photodetector while simultaneously improving operational stability.

This invention discloses a microtexturing treatment and lamination process for the copper foil surface of a low-thermal-expansion high-frequency copper-clad laminate (CCL). Belonging to the field of CCL manufacturing technology, it solves problems in existing CCL technologies, such as the difficulty in balancing peel strength and high-frequency transmission performance, excessively high coefficient of thermal expansion, easy delamination between layers, and patent conflicts. This invention employs a combined plasma etching and chemical micro-etching process to prepare a honeycomb-like pit-column-protrusion composite microtexture on the resin-coated surface of the substrate copper foil. After modification with a fluorine-containing and aminosilane coupling agent and mixed passivation treatment, a surface-modified copper foil is obtained. This foil is then laminated with a low-thermal-expansion high-frequency prepreg containing linear polyarylamide through a segmented preheating, gradual pressure curing, and slow cooling and depressurization process to prepare the CCL. This invention features a simple process, conforms to industrial practice, exhibits excellent overall performance, effectively avoids patent conflicts, and is suitable for high-end fields such as 5G communication and AI servers.

Provided is a method for producing a fluoropolymer aqueous dispersion, the method comprising: polymerizing a fluoromonomer in the presence of a fluorine-containing surfactant, a polymerization initiator, and an aqueous medium, thereby preparing an aqueous dispersion containing a fluoropolymer; and bubbling a gas containing oxygen into the aqueous dispersion, or bringing the aqueous dispersion into contact with an oxidizing agent, or bringing the aqueous dispersion into contact with an alcohol, thereby obtaining a fluoropolymer aqueous dispersion.

Provided is a catalyst layer-forming composition capable of forming a catalyst layer in which the occurrence of cracks is suppressed. This composition for forming a catalyst layer contains a fluorine-containing polymer having a unit containing a cyclic ether structure and having an ion exchange group, a catalyst, and a solvent, the solvent containing water and an alcohol, the alcohol containing propanol, the content of water being 50% by mass or more with respect to the total mass of the solvent, and the content of ethanol being 50% by mass or more with respect to the total mass of the solvent. The content of propanol is 50% by mass or more with respect to the total mass of the alcohol.

This utility model discloses a fluorinated alumina screening device, relating to the technical field of fluorinated alumina. It includes a hopper plate arranged inclined along the inflow direction of the fluorinated alumina, with a flow-blocking plate and a flow-diverting plate sequentially arranged on the hopper plate along the inflow direction. The fluorinated alumina is screened using baffles on the hopper plate. Fluorinated alumina that has clumped into blocks or flakes is blocked and filtered out by the baffles, while fluorinated alumina that has not yet clumped into blocks or flakes passes through the baffles and enters the hopper. This allows the fluorinated alumina that has not yet clumped into blocks or flakes to re-enter the system and react with the fluorinated flue gas, increasing the fluorine content of the fluorinated alumina. This allows the fluorinated alumina that has not yet clumped into blocks or flakes to enter the secondary circulation pipe independently, avoiding the blockage of the secondary circulation pipe by fluorinated alumina that has clumped into blocks or flakes. This solves the existing technical problem that fluorinated alumina that has not yet clumped into blocks or flakes cannot enter the secondary circulation pipe independently.