135 results about "Metal alkoxide" patented technology

The purpose of the present invention is to provide a curing catalyst that is highly stable and has a practical curing speed. The present invention provides a curing catalyst [B] used for curing a polymer [A] that has a reactive hydrolyzable silicon-containing group. The curing catalyst [B] contains the reaction products of a metal alkoxide [B1] and an ammonium hydroxide [B2]. The metal alkoxide [B1] includes one or both of a titanium compound [B1a] that is represented by chemical formula (1), and another metal alkoxide [B1b]. The other metal alkoxide [B1b] is an alkoxide of a metal other than titanium, and the ammonium hydroxide [B2] is represented by chemical formula (2).

The invention relates to the technical field of vaccine adjuvants, and particularly discloses a preparation method of a nanoscale aluminum hydroxide adjuvant based on organic metal alkoxide hydrolysis. Aluminum isopropoxide is used as a precursor, and a hydrolysis interface is directionally regulated and controlled through a compound surfactant; a staged hydrolysis process is adopted, and a kinetic equation is met; and the surface is modified by a KH-550 coupling agent. According to the preparation method disclosed by the invention, boehmite phase crystallization, nanoscale uniformity and high antigen adsorption stability are synchronously realized at low temperature through alcoholate hydrolysis bond energy reconstruction, surface activity compounding interface regulation and control and staged kinetic control, and the bottlenecks of high temperature, high energy consumption and non-uniform particle size of a traditional process are overturned; and a novel industrial scheme with low consumption and high efficiency is provided for vaccine adjuvants.

When considering the prior art, the objective of the present invention is to provide a curing catalyst which is highly safe and has a curing rate suitable for practical use. According to the present invention, provided is a curing catalyst [B] which is used for curing a polymer [A] having a reactive hydrolyzable silicon-containing group, the curing catalyst [B] containing a metal alkoxide [B1] and an ammonium hydroxide [B2], wherein: the metal alkoxide [B1] includes one or both of a titanium compound [B1a] represented by chemical formula (1) and another metal alkoxide [B1b]; the another metal alkoxide [B1b] is an alkoxide of a metal other than titanium; and the ammonium hydroxide [B2] is represented by chemical formula (2).

The invention belongs to the technical field of batteries, and relates to an oxide protection layer for a lithium metal negative electrode and a preparation method and application of the oxide protection layer, a prepared composite electrode comprises a lithium foil substrate and the oxide protection layer covering the surface of the lithium foil substrate, and the oxide protection layer is prepared through a sol-gel method. Comprising the following steps: sol preparation: dissolving metal alkoxide or metal salt in an aprotic polar solvent, adding a stabilizer and / or a catalyst, and stirring; and coating the sol on the surface of the lithium foil, drying and annealing. The oxide protective layer prepared by the method has a uniform and compact structure, can effectively inhibit the growth of lithium dendrites, improve interface contact and improve the cycle performance and coulombic efficiency of the lithium metal negative electrode, and is simple in preparation method, low in cost and easy to realize large-scale production. The invention also discloses an all-solid-state lithium metal battery comprising the composite electrode.

The invention provides a high-corrosion-resistance environment-friendly coating material for an offshore wind power neodymium-iron-boron magnet and a preparation process of the high-corrosion-resistance environment-friendly coating material. The coating material comprises 35-45 parts of composite resin, 40-45 parts of a gradient filler system, 25-30 parts of an environment-friendly solvent and 1.0-1.5 parts of auxiliaries. A compact shielding layer is formed through a Si-O-Ti / Zr / Al inorganic framework interpenetrating network and a hydrophobic nanoparticle-high radius-thickness ratio micron lamellar labyrinth structure, the salt mist service life is larger than or equal to 1500 h, the adhesive force is larger than or equal to 15 MPa, the hardness is larger than or equal to 4 H, and VOC is smaller than 50 mg / m < 3 >; the coating is applied to an offshore wind power neodymium-iron-boron magnet coating process, the problems that a traditional coating is insufficient in corrosion resistance, weak in edge protection and high in pollution are solved, and the long-acting, stable and maintenance-free requirements of C5-M offshore wind power are met. The preparation process of the coating material comprises the following steps: preparing composite resin, treating gradient filler, compounding the coating material, performing one-step modification on epoxy / phenolic resin and metal alkoxide under the protection of inert gas, performing high-speed shearing on modified nano filler, performing gradient dispersion on the modified nano filler and flaky micron filler, performing three-roller grinding to be less than or equal to 15 microns, and performing vacuum defoaming to obtain a finished product of the coating material.

The invention belongs to the technical field of functional nano porous materials, and particularly discloses highly-ordered layered double ceramic fiber aerogel and a preparation method thereof. The invention aims to consider the structural stability and application efficiency of the material, so that the material has unique advantages in the field of heat preservation and heat insulation. According to the main scheme, the preparation method comprises the following steps: dissolving metal alkoxide and a thickening agent to prepare a spinning solution, preparing two ceramic nanofibers through electrostatic spinning, and carrying out vacuum filtration on the ceramic nanofibers subjected to heat treatment to form a fiber membrane, then immersing the fiber membrane into an aqueous solution, promoting self-assembly of fibers to form a porous structure by utilizing a capillary water absorption effect of tiny holes in a fiber skeleton, and finally performing freeze drying and high-temperature calcination to obtain the highly-ordered layered double-ceramic fiber aerogel. The aerogel is composed of a highly ordered layered fiber skeleton, and has excellent mechanical properties and ultralow heat conductivity coefficient. The method is widely applied to the heat-insulating field.

The present disclosure relates to methods and apparatuses for depositing metal-containing material on a substrate by a selective deposition process. The method comprises providing a substrate in a reaction chamber, providing a metal alkoxide precursor into the reaction chamber in a vapor phase; and providing a second precursor into the reaction chamber in a vapor phase to form metal-containing material on the substrate. The second precursor according to the disclosure comprises a borane compound and the substrate comprising a first surface and a second surface.

A laminate of the present disclosure has a substrate and a barrier layer containing a barrier composition. The barrier composition contains a water-soluble polymer, an inorganic layered compound, and at least one of a metal alkoxide and a hydrolysate thereof. The mass ratio of the water-soluble polymer to the inorganic layered compound in the barrier composition is from 0.3 to 3.0 (inclusive).

A method of anodizing an aluminum alloy, comprising the steps of: providing an anodizing bath containing tert-butoxide, primarily oxalic acid; aging the anodic oxidation bath to condense the metal alkoxide to form metal oxide particles and an acid ester; heating the bath to 40 DEG C to 80 DEG C; stirring the bath at a speed of 200 to 700 rpm (revolutions per minute); immersing the workpiece in a bath and anodizing at a constant current density of 1 A / dm2 to 4 A / dm2 for 1 to 20 minutes or until the bath voltage reaches a threshold value of 100 to 200 V; the workpiece is then anodized at a constant voltage for 20 minutes to 200 minutes to produce an anodized surface having a thickness of 5 microns to 100 microns, the anodized surface comprising an optically discontinuous pore structure that produces a white or near-white appearance.

Metal-organic thermoset polymers are provided. The metal-organic thermoset polymers can be formed from a mixture including at least one epoxy resin and at least one metal alkoxide. Articles including the metal-organic thermoset polymers and processes for manufacturing the metal-organic thermoset polymers are also provided.

A method for preparing a transparent nanoporous glass ink and a method for additive manufacturing a transparent nanoporous glass material. By hydrolyzing metal alkoxide and introducing a photocurable monomer and an initiator, a highly transparent and low-viscosity prepolymer photocurable transparent nanoporous glass ink is prepared. According to the usage scenario, a 3D model of the device is freely designed using computer-aided design software, and after slicing processing, a data set is formed and transferred to the printer, and then printing is carried out. By precisely controlling the ink ratio, printing parameters, and heat treatment process, a transparent nanoporous glass with excellent optical properties and a high specific surface area can be printed. The preparation of a multifunctional material platform based on the printed transparent nanoporous glass is realized, which greatly saves the preparation cost of the transparent nanoporous glass and improves the production efficiency. It solves the problems of the existing manufacturing methods, such as the forming relying on molds, long preparation cycle, low efficiency, and difficulty in forming transparent nanoporous glass devices.

To provide a curable composition that yields a cured product having a high refractive index, intra-system uniformity, and transparency in combination.SOLUTION: A curable composition contains an oligomer complex. The oligomer complex is formed by coordinating a ligand to a metal alkoxide oligomer, and the number average molecular weight of the metal alkoxide oligomer is 500 or more.SELECTED DRAWING: None

The invention relates to the technical field of metal alkoxide preparation, and particularly provides a method for rapidly solidifying aluminum isopropoxide, which comprises the following steps: concentrating liquid aluminum isopropoxide in vacuum at 80-90 DEG C until the concentration is greater than or equal to 95%; sequentially adding 0.1 to 0.2 percent of a crystallization assisting solvent TXIB, 0.05 to 0.1 percent of a nanoscale aluminum isopropoxide seed crystal and 0.01 to 0.1 percent of a magnesium isopropoxide eutectic seed crystal; crystallization is completed through gradient cooling, and the whole process is less than or equal to 24 hours; and finally, carrying out solid-liquid separation, washing and drying to obtain the high-purity aluminum isopropoxide crystal. Through the synergistic effect of the bifunctional seed crystal and the TXIB, the crystallization period is remarkably shortened, the crystal quality is improved, and the method is suitable for industrial production.

The present invention relates to a preparation method of a high-entropy ceramic-supported composite conductor material, which specifically comprises the following steps: using a plurality of metal alkoxides as raw materials, obtaining gel precursor microspheres through a sol-gel reaction and spray drying, and forming a three-dimensional ceramic skeleton structure of high-entropy nitride hollow microspheres through high-temperature nitriding treatment; subsequently, using pulsed ultrasound and air pressure circulation to infiltrate and fill a low-melting-point gallium-based liquid metal alloy into the ceramic skeleton to construct a closed and continuous conductive channel; achieving interfacial bonding between the metal and the ceramic through vacuum heat treatment; further, forming silver nanocatalytic sites in situ by spraying a silver nitrate aqueous solution and performing microwave reduction, and finally inducing the growth of uniformly oriented boron nitride nanotubes in a borane ammonia atmosphere to form a protective layer with a heat diffusion function; the obtained composite conductor has good electrical conductivity, thermal stability and structural integrity, and is suitable for the field of high current density power transmission.

A metal oxide-coated aerogel has an aerogel structure comprising yttria-stabilized zirconia (YSZ) and a coating on the aerogel structure. The YSZ includes at least about 20 mol. % yttria (YO1.5) in zirconia (ZrO2) and the coating comprises a metal oxide selected from the group consisting of silica, alumina, zirconia, and titania. An aerogel composite includes a fibrous material and an aerogel on surfaces and within interstices of the fibrous material, where the aerogel has an aerogel structure comprising yttria-stabilized zirconia (YSZ) and a coating on the aerogel structure that comprises a metal oxide. A method of forming a thermally stable aerogel comprises: forming a gel comprising yttria-stabilized zirconia (YSZ) including at least about 20 mol. % yttria (YO1.5) in zirconia (ZrO2); immersing the gel in a coating solution comprising a metal alkoxide and ethanol; and after the immersion, supercritically drying the gel, thereby forming a metal oxide-coated aerogel.

The present disclosure relates to a method for reactivating a co-cured film layer disposed on a composite structure, the method comprising applying a reactivation treatment composition to the co-cured film layer and allowing the reactivation treatment composition to produce a reactivated co-cured film layer, the reactivation treatment composition comprising at least two solvents and a surface exchange agent comprising a metal alkoxide or a chelate thereof, wherein the co-cured film layer is pre-cured at a cure temperature greater than about 50° C. Also provided are a reactivated co-cured film layer and an aircraft component having the reactivated co-cured film layer.

A method for controlling a reactive distillation column for effecting a transalcoholisation reaction, comprising feeding a metal methoxide into the reactive distillation column via a side feed; feeding a reactant alcohol into a lower part of the reactive distillation column; withdrawing methanol from the top of the reactive distillation column; and withdrawing a solution of a product metal alkoxide in the reactant alcohol from the bottom of the reactive distillation column; wherein the method comprises a process control scheme selected from: Scheme A: establishing a signal S1 which is responsive to a temperature in the rectifying section disposed above the feed of the metal methoxide; and manipulating in response to the signal S1 the feed amount of the reactant alcohol; Scheme B: establishing a signal S1 which is responsive to a temperature in the rectifying section disposed above the feed of the metal methoxide; and manipulating in response to the signal S1 the heat supplied to the bottom of the reactive distillation column. The invention also relates to a method for controlling a reactive distillation column for effecting a transalcoholisation reaction, comprising feeding a metal methoxide into the reactive distillation column via a side feed; feeding a reactant alcohol into a lower part of the reactive distillation column; causing an auxiliary alcohol to be present in the reactive distillation column; and optionally replenishing the auxiliary alcohol via a side feed located above the feed of the reactant alcohol and below the top of the column; withdrawing methanol from the top of the reactive distillation column; and withdrawing a solution of a product metal alkoxide in the reactant alcohol from the bottom of the reactive distillation column; wherein the method comprises a process control scheme selected from: Scheme C: establishing a signal S2 which is responsive to a temperature at a point located between the feed of the metal methoxide and the bottom of the reactive distillation column; and manipulating in response to the signal S2 the feed amount of the reactant alcohol; Scheme D: establishing a signal S2 which is responsive to a temperature at a point located between the feed of the metal methoxide and the bottom of the reactive distillation column; and manipulating in response to the signal S2 the heat supplied to the bottom of the reactive distillation column. The methods of the invention allow for improved controlling of a reactive distillation column for effecting a transalcoholisation reaction.

Described herein is an aqueous composition and a method of making a sol-gel coating. The aqueous composition comprises (a) an organometallic salt, wherein the organometallic salt comprises an acid-stable metal alkoxide, a metal carboxylate, or a mixture thereof; and (b) an aminosilane, wherein the aqueous composition has a pH less than or equal to 7. Such sol-gel coating compositions can be used to adhere an organic resin to a metal substrate.

A gas barrier laminate including a gas barrier layer and a sealing layer laminated on a substrate in this order, wherein the gas barrier layer is a layer formed by applying and heat-drying a coating solution containing a water-soluble polymer and at least one of a metal alkoxide represented by a general formula M(OR1)n(where M is a metal element, R1 is an alkyl group, and n is the oxidation number of the metal element) and a hydrolyzate of the metal alkoxide, a content of the water-soluble polymer is 50 wt % or more relative to a total mass of a solid content in the coating solution, a total content of the metal alkoxide and the hydrolyzate thereof is 5 to 50 wt % relative to the total mass of the solid content in the coating solution, and the sealing layer contains an aqueous heat seal varnish.

The present invention relates to a formulation for preparing an optical layer containing a metal oxide. The formulation may exhibit at least one of properties as an advanced material or as a high performance material. The formulation may be used in the nanotechnology process to make semiconductor device / display device application, for example semiconductor chip, or a liquid crystal, quantum dot, OLED display fabricated on a substrate controlled by semiconductors.

The invention provides Sc2O3 porous aerogel as well as a preparation method and application thereof. According to the method, ScCl3. 6H2O is selected as a scandium source and is non-toxic, and the reaction activity of the ScCl3. 6H2O is controllable compared with that of organic metal alkoxide. In addition, compared with supercritical drying and freeze drying, the normal-pressure drying method for graded drying is lower in cost and higher in safety, and graded drying can effectively protect the nano structure and reduce cracking and collapse of the sample as much as possible. In addition, the scandium oxide aerogel is synthesized for the first time, and the product is high in porosity, large in specific surface area and good in heat insulation performance and has positive significance in application of aerogel materials in various fields.

The present invention is directed to a monomer for chain growth polymerization, in particular anionic polymerization, said monomer having the general formula (EFL)wherein: Ra is a C1-C30 alkyl, C3-C30 cycloalkyl, C6-C18 aryl or C2-C12 alkenyl group. The present invention is further directed to a process for the anionic polymerization of at least one compound (EFL) as defined above, wherein said anionic polymerization is conducted in the presence of an initiator selected from the group consisting of: alkali metal organyls; alkali metal alkoxides; alkali metal thiolate; alkali metal amides; and compounds of an element of group 3a of the Periodic Table of the Elements. The process of anionic polymerization yields a homo- or co-polymer (p-EFL) having pendant lactone functional groups in its repeating units.

The present invention discloses a method for preparing a composite gel electrolyte, as well as its preparation method and application. The method comprises the following steps: preparing a polymer solution: mixing a high molecular weight polymer matrix with an organic solvent, stirring and dissolving the mixture at room temperature to obtain a transparent and uniform polymer solution; preparing a composite gel film: adding a metal alkoxide additive to the polymer solution, stirring the mixture evenly, and then standing the mixture to solidify. After the solvent evaporates, a smooth and flexible polymer film is obtained, and the polymer film is then dried; and preparing a composite gel electrolyte: immersing the polymer film in an electrolyte solution, and obtaining a gel polymer electrolyte after the polymer film swells. The composite gel electrolyte prepared by this method can have excellent ionic conductivity, high energy density, and stability, good compatibility with the positive and negative electrodes of lithium batteries, and can exhibit excellent electrochemical performance when applied to lithium metal batteries.

To provide a method for searching for a sol-gel film which is a coating film including metal alkoxide, a computer, and a program.SOLUTION: A method for searching for a sol-gel film including metal alkoxide, executed by a computer, includes the steps of: generating a plurality of prediction models corresponding to a plurality of objective variables using result data relevant to a sol-gel film; and searching for a sol-gel film having a desired physical property balance by reverse analysis using a plurality of prediction models. The result data includes at least type and ratio of the metal alkoxide and synthesis information of the sol-gel film. The objective variables include at least one of the numerical values representing optical property, mechanical property, superficial, and chemical property.SELECTED DRAWING: Figure 4

The present invention discloses a high-boiling silicone oil and its preparation method and application, which belongs to the field of high-boiling organosilicon products. The preparation method of the high-boiling silicone oil provided by the present invention comprises the following steps: (1) mixing a high-boiling organosilicon product, a high-boiling organosilicon product treatment agent and water for reaction, adding an alkaline neutralizing agent for neutralization to obtain an intermediate product; the boiling point of the high-boiling organosilicon product is above 180°C; the high-boiling organosilicon product treatment agent comprises at least one of trimethylchlorosilane, dimethyldichlorosilane or ethanol; (2) adding an alkali metal alcohol salt to the intermediate product obtained in step (1), mixing and reacting, then adding an acidic neutralizing agent for neutralization, removing low-boiling products with a boiling point below 150°C, and obtaining the high-boiling silicone oil. The high-boiling silicone oil prepared by the present invention has the characteristics of low volatility, low acid value, and is not easy to return to acid, and has excellent insulation performance. It can be used as a diluent for sealants and lubricating oil for electronic appliances.

In order to produce core-shell particles and hollow particles having a sharp particle size distribution by suppressing the generation of solid particles and also suppressing particle aggregation and coalescence, this method for producing core-shell particles according to one embodiment of the present disclosure involves mixing an oil phase containing a hydrophobic organic solvent and a metal alkoxide into an aqueous phase comprising water and / or a hydrophilic organic solvent while in the presence of a surfactant, forming an O / W emulsion, and producing core-shell particles having a solvent as a core and a metal oxide as a shell.

Provided are magnetic particles used in the manufacture of a compacted powder magnetic core having a sufficiently high relative magnetic permeability and specific resistance. A magnetic particle 1 has a core 2 of a metallic magnetic material and a film 3 covering the surface of the core 2. The film 3 contains a reaction product obtained by using a first metal alkoxide that does not contain a metal atom-carbon atom bond in one molecule; and a second metal alkoxide that contains two or more metal atom-carbon atom bonds in one molecule.

A method of manufacturing an inorganic oxide nanofiber of an embodiment of the disclosure includes: preparing a mixture solution by dissolving water, a metal alkoxide, a catalyst, and a surfactant in an aprotic or protic polar solvent; removing the polar solvent from the mixture solution and synthesizing a nanostructure having a reverse two-dimensional hexagonal structure; and thereafter decomposing the nanostructure.

This invention provides a multi-surface modified O2-type lithium-rich manganese-based material and its preparation method, belonging to the field of O2-type lithium-rich manganese-based cathode materials. This invention first coats a Na-based P2-type precursor with fluoride, followed by ion exchange to obtain an O2 structure. This improves the rate performance of the O2-type lithium-rich manganese-based material and avoids the phase transition (O2 to O3). An oxide coating layer is prepared on the surface of the fluorine and lithium compound-containing O2-type lithium-rich manganese-based material using metal alkoxides. This allows for low-temperature preparation of the oxide coating layer, preventing the O2 structure from transforming into the O3 structure and improving cycle stability. The multi-coating process suppresses the release of reactive oxygen species during charging, improving the first-cycle coulombic efficiency. The multi-surface modified O2-type lithium-rich manganese-based material prepared by this invention exhibits high first-cycle coulombic efficiency and cycle stability.

The invention discloses a preparation method of an anti-sticking slag coating for a laser cutting machine and the anti-sticking slag coating, and relates to the field of high-end equipment manufacturing and surface modification. The method comprises the following steps: treating an h-BN nano-material with a silane coupling agent alcohol-water solution to obtain h-BN-OH, preparing a ceramic sol by using metal alkoxide / silicate as a ceramic precursor, dispersing the h-BN-OH in the ceramic sol to form a covalent bond connected nano-composite sol, coating a base material with the nano-composite sol through a dip-coating / spin-coating method, and carrying out heat treatment in an inert / vacuum environment at 400-800 DEG C for 1-5 hours to form a coating, and the ratio of h-BN-OH in the coating is 5%-30%. In the coating, h-BN and a ceramic matrix are chemically bonded, a working adhesion work calculation model is also established, and quantitative prediction and optimization of the coating performance are realized. The coating is good in wetting resistance and durability, capable of effectively preventing adhesion of molten metal slag, high in process adaptability, controllable in cost and suitable for components such as laser cutting machine nozzles and supporting grilles, and the service life of the components can be remarkably prolonged.