370 results about "Metal hydroxide" patented technology

The invention belongs to the technical field of cement concrete application, and particularly discloses a repairing material suitable for repairing hydraulic concrete at negative temperature and a preparation method thereof.The repairing material is prepared from, by mass, 530-690 parts of ordinary Portland cement, 60-170 parts of sulphoaluminate cement, 250-350 parts of mineral powder, 30-40 parts of expanding agent and 5-20 parts of multi-element layered metal hydroxide; the concrete comprises the following components in parts by weight: 60-80 parts of water, 3.0-4.6 parts of a water reducing agent, 0.9-1.8 parts of a defoaming agent, 6.2-8.2 parts of chopped fibers and 800-1000 parts of quartz sand. The repairing material can be used at negative temperature, meets the requirements of different hydraulic concrete repairing parts and construction processes, can effectively delay corrosion of corrosive ions in the environment to steel bars in hydraulic concrete, is particularly suitable for repairing damaged concrete in ocean engineering and water conservancy and hydropower engineering, and is large in market space and high in practicability.

The invention relates to the technical field of sewage treatment, in particular to an urban sewage treatment plant sludge deep dehydration conditioner and an application method thereof, and the urban sewage treatment plant sludge deep dehydration conditioner comprises the following raw materials: functional layered composite powder, cationic polyacrylamide, diatomite and sodium carbonate. After the functionalized layered composite powder and the bentonite are organically modified by the lauryl trimethyl ammonium bromide, the interlayer spacing is obviously increased, the hydrophobic property and the cation exchange capacity are excellent, negative charges on the surface of sludge colloid can be efficiently neutralized, a double-electrode-layer structure can be destroyed, and part of bound water can be released; ferric hydroxide deposited on the surface serves as amphoteric metal hydroxide, further compresses double electric layers through electric neutralization, forms an amorphous net structure and serves as a high-efficiency adsorption flocculation net to capture fine sludge particles; under the synergistic effect of the powder and cationic polyacrylamide, efficient removal of water combined with sludge and water in cells is achieved, and the dual purposes of deep dehydration and mud cake volume reduction are achieved.

The invention discloses a preparation method of a composite phase change material, a thermal-insulation and antibacterial fabric and a preparation method thereof, and belongs to the field of functional textile fabrics and preparation thereof. The composite phase change material provided by the invention can be applied as a coating finishing component, and the preparation method comprises the following steps: taking polystyrene microspheres as a core, and forming a composite precursor through dopamine self-polymerization coating; and compounding the composite precursor with a layered double-metal hydroxide, and calcining to obtain the carbon microsphere supported layered double-metal oxide material with a hollow structure, and mixing the carbon microsphere supported layered bimetal oxide material with paraffin, and loading to obtain the carbon microsphere supported layered bimetal oxide material. The textile fiber fabric provided by the invention has excellent thermal insulation and antibacterial characteristics, is good in comfort, and has wide application prospects in industrial production and clothing application.

The invention relates to the technical field of membrane material preparation, and particularly discloses an oil-water separation membrane and a preparation method thereof.The oil-water separation membrane is characterized in that polyethyleneimine is grafted to zeolite powder under the action of a cross-linking agent epichlorohydrin, and a large number of amido groups on a polyethyleneimine chain can serve as effective chelating coordination sites of metal ions in subsequent steps; meanwhile, polyethyleneimine has excellent hydrophilic performance and is grafted on the zeolite powder, so that the hydrophilic performance of the zeolite powder is improved; then, three metal salts of magnesium, aluminum and cerium are compounded with urea on the surface of the PEI grafted zeolite through a hydrothermal reaction to generate a composite metal hydroxide structure, Mg and Al form a basic framework of a layered double-metal hydroxide structure, oxygen vacancy defects can be easily formed by doping Ce, and the defects can adsorb water molecules, so that a stable hydration layer is formed on the surface of the material, and the surface of the material is protected; the excellent super-hydrophilicity is shown.

The polyester based polymer composition includes a polyester, a metal oxide, and a metal hydroxide. The polymer composites contains the metal oxide and a metal hydroxide made from melting blending has good mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The reinforced polymer composites with glass fibers, and the metal oxide and metal hydroxide made from melting blending has higher mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The polymer composites made from melting blending have the required mechanical properties and the degradability so that the polymer composites can be used for degradable or dissolvable component of a downhole tool.

The invention provides a nitrogen-doped hierarchical pore carbon material as well as a preparation method and application thereof, and the preparation method comprises the following steps: sequentially dissolving urea, alkali metal hydroxide and / or a pore-forming agent in water to obtain a mixed solution, cooling the mixed solution, adding cellulose-based biomass, and dissolving the cellulose-based biomass to obtain transparent sol; freezing the transparent sol into a solid, and performing vacuum freeze drying to obtain a white loose solid; mixing and grinding the liquid polymeric monomer and the white loose solid, and performing heat treatment to obtain a solid product; and carbonizing the solid product in an inert atmosphere, and then pickling and washing the carbonized product. According to the preparation method, chain-shaped arrangement in cellulose-based biomass molecules is converted into three-dimensional net-shaped arrangement through dissolution, macropores are formed, a macropore framework is kept stable and does not collapse in the carbonization process through polymerization reaction, and the formed hierarchical pore carbon material has a micropore / mesopore / macropore coexisting three-dimensional structure and controllable specific surface area and pore size distribution; meanwhile, in-situ nitrogen doping can also be realized.

The application relates to the technical field of circuit conveying equipment, in particular to a fireproof polyvinyl chloride material and a preparation method thereof and a cable sheath pipe. The fireproof polyvinyl chloride material comprises the following raw materials in parts by weight: 90-110 parts of polyvinyl chloride, 10-20 parts of a compatilizer, 8-15 parts of ammonium polyphosphate and 5-8 parts of an ultraviolet aging resistant additive, wherein the ultraviolet aging resistant additive is a mixture of N,N"-bis(2,2,6,6-tetramethyl-4-piperidyl)-1,6-hexanediamine and a metal hydroxide. The fireproof polyvinyl chloride has excellent flame retardant performance and ultraviolet aging resistance.

The invention discloses an adhesive compound with an adhesive property optimized based on metal hydroxides as well as a preparation method and application of the adhesive compound, and belongs to the technical field of biological adhesives. The present invention relates to an adhesive composition comprising an adhesive precursor consisting of a protein-polyphenol composite hydrogel and a hydrogen bond destructive small molecule compound capable of network reconstitution comprising beta-folding formation in aqueous phase grafting comprising a metal hydroxide having the characteristics of: (a) a hydration enthalpy value of from-1000 kJ / mol to-4000 kJ / mol; (b) a dissociation constant of from 6 pKa to 13.5 pKa; (c) a water exchange rate of 105 S <-1 > to 10 < 10 > S <-1 >. The adhesion compound can be networked to form an advanced structure when encountering water, not only can generate underwater lap joint shear strength of more than 1MPa, but also can tolerate underwater long-term soaking and temperature change from-196 DEG C to 100 DEG C, and meanwhile, the adhesion compound also has good biocompatibility, can meet the requirement of the environment in a human body on tissue adhesion safety, and has good application prospects. Stability suitable for in vivo tissue repair and industrial applications is exhibited.

A chemical composition for controlling odor and to a method of using the chemical composition to impart an odor control treatment to an article, more particularly to a textile material or a building or construction material. The chemical composition comprises a metal compound selected from the group consisting of a metal oxide, a metal hydroxide, and a combination thereof and a sulfo polyester. Methods of making and of using are provided.

The invention relates to a chromium-free environment-friendly insulating coating paint and a thin electrical steel strip. The chromium-free environment-friendly insulating coating comprises the following components in percentage by mass: 15%-23% of phosphate; 8%-13% of epoxy resin emulsion; 0.3%-1.2% of boric acid; 0.4%-4.7% of a metal inorganic salt additive; 0.3%-1.1% of a metal hydroxide; 0.1%-0.44% of a coupling agent; 7%-26% of hollow ceramic microsphere particles; and 30.56% to 68.9% of deionized water. The metal inorganic salt additive is at least one of barium oxalate, strontium sulfate and aluminum silicate. The phenomena that solid components in the coating sink to the bottom and water is separated from the surface can be avoided, the compactness of the coating is improved, the wear resistance and corrosion resistance of the coating are improved, the resistivity of the insulating coating can be remarkably improved through the nanoscale hollow ceramic microsphere particles, the loss of electrical steel is reduced, the adhesiveness of the coating is enhanced, and cracks of the coating are reduced.

This method comprises: mixing a first solution containing a metal nitrate with a second solution containing lithium hydroxide to precipitate a metal hydroxide; thermally decomposing lithium nitrate produced from the metal nitrate and the lithium hydroxide; and recovering lithium oxide contained in the thermal decomposition product of the lithium nitrate. This method may further comprise converting lithium oxide into lithium hydroxide and reusing the lithium hydroxide.

The application relates to a double-metal hydroxide, in particular to application of a CuAl double-metal hydroxide, in particular to application of the CuAl double-metal hydroxide in preparation of a preparation for inactivation of pathogenic bacteria, fungi and viruses. The CuAl double-metal hydroxide is prepared by a formamide liquid phase stripping method. Compared with the prior art, the application solves the problem of high cost of a silver ion loaded layered double-metal hydroxide in the prior art, and realizes preparation of a low-cost, high-performance and green antibacterial material with a bactericidal and antiviral effect.

The invention discloses an iron-cobalt-aluminum sulfide hydrogen evolution catalyst with high electric power fluctuation resistance as well as a preparation method and application thereof, relates to the technical field of electro-catalysis full water decomposition, and aims to solve the problem that a catalyst which is high in HER activity, resistant to industrial-grade current density and kept stable under a fluctuation electric power condition is lacked in the prior art. The preparation method is characterized by comprising the following steps: firstly, depositing urea and layered metal hydroxides of iron, cobalt and aluminum on the surface of a carrier through electrochemistry; and taking the layered metal hydroxide as a matrix, and carrying out hydrothermal in-situ vulcanization treatment to obtain the iron-cobalt-aluminum sulfide composite material. The composite material disclosed by the invention has a wide application prospect in preparation of an electrolytic hydrogen production cathode material.

The invention discloses a high-capacity aromatic pinene formaldehyde adsorbent and a preparation method thereof, the adsorbent comprises a meso-porous silicon substrate, pinene covalently grafted on the meso-porous silicon substrate and metal ions doped in the meso-porous silicon substrate, pinene is alpha-pinene or beta-pinene, the pinene and hydroxyl contained in the meso-porous silicon substrate form a covalent bond through a silane coupling agent, and the metal ions are doped in the meso-porous silicon substrate. The grafting amount of pinene is 5-15 wt%, the metal ions are one or more of Zn < 2 + >, Cu < 2 + > and Ni < 2 + > and exist in the form of metal oxides or metal hydroxylates, and the doping amount of the metal ions is 0.5-3 wt%.

This invention belongs to the field of hydrogen barrier coating technology, specifically relating to a nickel-phosphorus-based amorphous-nanocrystalline composite hydrogen barrier coating and its preparation method. The coating uses a nickel-phosphorus alloy as an amorphous matrix, embedding a composite nano-reinforcing phase composed of core-shell structured phosphide nanoparticles, molybdenum disulfide-metal hydroxide heterostructure two-dimensional nanosheets, and silane coupling agent-modified hexagonal boron nitride nanosheets. The microstructure exhibits a coexistence of amorphous and nanocrystalline phases, with a small amount of alloying elements added to the matrix. This invention involves the controlled preparation of three composite nano-reinforcing phases, which are then combined with nickel salts and a phosphorus source to prepare a uniformly dispersed composite plating solution. This solution is deposited on a pretreated steel substrate to form an amorphous nickel-phosphorus alloy coating, followed by gradient heat treatment to construct the target microstructure. This coating, through multi-phase synergy, enhances substrate adhesion and hydrogen barrier performance, showing promising industrialization prospects in hydrogen energy storage and transportation, and petrochemical equipment protection.

The invention relates to a high-entropy metal hydroxide nanosheet and a preparation method thereof, and belongs to the technical field of new material preparation. The preparation method of the high-entropy metal hydroxide nanosheet comprises the following steps: dissolving at least five metal precursors, ammonium fluoride and urea in a solvent to obtain a mixed solution; and transferring the mixed solution into a microreactor, and carrying out heating reaction to obtain the high-entropy metal hydroxide nanosheet. According to the method, an instantaneous and uniform mixing environment provided by a micro-fluidic technology is utilized, so that component segregation caused by non-uniform mixing in a traditional method is fundamentally avoided, and uniform distribution of various metal elements on the atomic level is ensured.

Some embodiments of the present application provide an electrode slurry processing device and a processing method, the electrode slurry processing device comprising a first processing pipeline for flowing through the electrode slurry, and a power supply device, the power supply device comprising a power supply and an electrode structure, the power supply being electrically connected with the electrode structure, the electrode structure being arranged in the inner cavity of the first processing pipeline, and the electrode structure being used to apply voltage to the electrode slurry in the inner cavity of the first processing pipeline. In the above structure, the electrode slurry flowing through the inner cavity of the first processing pipeline is affected by the voltage applied by the electrode structure, and the metal elements in the electrode slurry can be quickly ionized to contact with oxygen to generate metal oxides or metal hydroxides, thereby reducing the content of the metal elements in the electrode slurry, improving the quality of the electrode slurry, and helping to improve the reliability of the battery cells made.

The present invention relates to a coagulant for cementitious compositions, in particular cementitious compositions having a binder as a source of aluminate and / or sulphoaluminate, the coagulant comprises a source of an alkali metal carbonate, a metal sulfate, an alkali metal hydroxide, and optionally an alkali metal bicarbonate, an alkaline earth metal hydroxide, or an alkaline earth metal oxide. The invention also relates to cementitious compositions having a binder as a source of aluminate and / or sulphoaluminate and the coagulation accelerator according to the invention.

The present application belongs to the field of bonded magnetic composite material. The present application provides a kind of flame-retardant magnetic composite material and its preparation method, the preparation method includes the following steps, magnetic powder is dispersed in anhydrous organic alcohol solvent, add the salt containing flame-retardant metal element, add weak base solution, adjust pH to 7~10, stir, use magnetic powder as nucleation site, induce the flame-retardant metal hydroxide in situ growth and coating on its surface, obtain the magnetic powder of coated flame-retardant material;Add coupling agent, obtain the surface modified coated flame-retardant material of magnetic powder;The surface modified coated flame-retardant material of magnetic powder, flame-retardant modified resin and processing aid are mixed uniformly, then extruded granulation, obtain flame-retardant magnetic composite material.The preparation method of the present application, compared with prior art, the amount of flame retardant is significantly reduced, after testing, the prepared flame-retardant magnetic composite material grade reaches UL94-V0, with excellent flame retardancy, magnetic performance and mechanical performance.

This invention provides a one-dimensional silver nanostructure / metal hydroxide composite material, its preparation method, and its application. The preparation method includes: adding a one-dimensional silver nanostructure, a metal salt, and an additive to a solvent and stirring to disperse them evenly; adding an acidic or alkaline reagent under stirring conditions to adjust the pH of the solution, causing the metal ions in the solution to convert into metal hydroxide precipitates, obtaining a one-dimensional silver nanostructure-metal hydroxide suspension; then performing solid-liquid separation, washing and drying the obtained solid product to obtain a one-dimensional silver nanostructure / metal hydroxide composite powder; wherein the metal hydroxide is aluminum hydroxide, zinc hydroxide, magnesium hydroxide, iron hydroxide, manganese hydroxide, copper hydroxide, nickel hydroxide, or cobalt hydroxide, and the one-dimensional silver nanostructure is silver nanowire or silver nanoribbon. The resulting composite material uses metal hydroxide as a carrier and separator, inhibiting the drying and agglomeration of silver nanowires from the source, exhibiting high conductivity and good redispersibility, thus improving conductivity.

Provided is a light-emitting element with high reliability. The light-emitting element includes an anode, a cathode, a light-emitting layer containing a phosphor provided between the anode and the cathode, and at least one intermediate layer containing a metal oxide and at least one of a metal hydroxide provided between the anode and the light-emitting layer.

The invention provides a quenching crystallization reaction system for preparing layered composite metal hydroxides and a corresponding preparation method, a high-pressure cooling distributor is additionally arranged between a reaction kettle and a collecting tank, and the high-pressure cooling distributor comprises a cavity and a quenching device which are communicated with each other; and a low-temperature cooling medium enters the cavity from the quenching device, is in direct contact with the high-temperature reaction slurry and rapidly cools the high-temperature reaction slurry, so that the layered composite metal hydroxide with the surface defect active site can be obtained. According to the invention, a cooling liquid system consistent with hydrotalcite reaction slurry is adopted, construction of defect active sites is realized for hydrotalcite through a quenching type cooling mode under the condition of not introducing impurities, the product performance can be effectively improved, the equipment requirement is low, the process is simple, the cost is effectively reduced, and the method is suitable for industrial production. And meanwhile, the impurity ion introduction problem caused by acid-base solvent etching and the like is also avoided, the process cleanliness is guaranteed, and the method is very suitable for industrial implementation.

Provided are heat sink particles and nonaqueous electrolyte rechargeable batteries, the heat sink particles being at least partially modified metal hydroxide particles, wherein the amount of CH4 desorbed from about 80°C to about 1400°C by thermal desorption gas phase mass spectrometry (TDS-MS) is greater than or equal to about 15 x 10 ‑6 mol / g and less than or equal to about 3000 x 10 ‑6 mol / g, the amount of CH3OH desorbed from about 80°C to about 1400°C is greater than or equal to about 15 x 10 ‑6 mol / g and less than or equal to about 6000 x 10 ‑6 mol / g, the amount of H2O desorbed from about 80°C to about 200°C is greater than or equal to about 30 x 10 ‑6 mol / g and less than or equal to about 1500 x 10 ‑6 mol / g, and both the specific surface area calculated by the adsorption isotherm measured by adsorption of water vapor and the specific surface area calculated by adsorption of nitrogen to the metal hydroxide particles are greater than or equal to about 8 m 2 / g and less than or equal to about 600 m 2 / g.

The invention relates to a metal hydroxide for a heat storage system and a green preparation method and application thereof. The green preparation method of the metal hydroxide, provided by the invention, comprises the following steps: dissolving metal acetate in water, and preparing a metal acetate aqueous solution with the metal ion concentration of 0.01-1mol / L; placing the metal acetate aqueous solution in an open container, and carrying out evaporation concentration treatment at 30-95 DEG C for 1-96 hours to generate a metal hydroxide precipitate; and carrying out solid-liquid separation on the metal hydroxide precipitate, washing and drying to obtain the metal hydroxide. The method does not need to add an alkaline agent or an organic auxiliary agent, avoids generation of by-products of salts and high-salt waste liquid, and accords with 12 principles of green chemistry; reaction conditions are mild, the process is simple, operation can be carried out at normal temperature and normal pressure, energy consumption is low, and safety is high; the raw material conversion rate is high, mother liquor can be recycled, and high-atom-economy and low-cost production is achieved.

The present disclosure provides immunomodulatory fusion proteins-metal hydroxide complexes comprising an immunomodulatory domain adsorbed to a metal hydroxide via ligand exchange. The disclosure also features compositions and methods of using the same, for example, to treat cancer.

The invention provides an environment-friendly polymer antioxidant additive and a preparation method thereof, and belongs to the technical field of antioxidants, the environment-friendly polymer antioxidant additive comprises the following components by weight: 100 parts of a polyolefin polymer and 0.1-10 parts of an antioxidant additive; the antioxidant additive comprises a layered double metal hydroxide and a modified antioxidant; the modified antioxidant is loaded on the surface of the layered double-metal hydroxide, and cellulose nanocrystals and the antioxidant are bridged and covalently connected through isophorone diisocyanate. The antioxidant and the cellulose nanocrystal are covalently connected through the isophorone diisocyanate, and are further loaded on the layered double-metal hydroxide, so that the migration problem of the antioxidant is solved, and the stability of the antioxidant in a polyolefin matrix is improved by compounding the antioxidant with the cellulose nanocrystal; therefore, the long-lasting anti-oxidation protection is provided for the polyolefin material.

The invention relates to the technical field of photo-thermal materials, and discloses a photo-thermal composite material and a preparation method and application thereof. The photo-thermal composite material is a layered composite metal hydroxide; wherein metal sulfide grows on a laminate of the layered composite metal hydroxide in situ. And dissolving the layered composite metal hydroxide, a sulfur source and a structure-directing agent in a solvent, and reacting to obtain the photo-thermal composite material. The method provided by the invention is green and efficient, overcomes the defects of tedious steps and low yield of preparation of the photo-thermal composite material in the prior art, and improves the sunlight absorption performance, photo-thermal conversion capability and photo-thermal stability of the photo-thermal composite material by virtue of the interaction between the layered composite metal hydroxide and the sulfide.

A process for preparing metal oxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium and aluminum. The process comprising:reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium and aluminum with lithium hydroxide and optionally a chelating agent to obtain a solid comprising a metal hydroxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium and aluminum, and a liquid comprising lithium sulfate, the metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium and aluminum;separating the liquid and the solid from one another to obtain the metal hydroxide;submitting the liquid comprising lithium sulfate to an electromembrane process for converting the lithium sulfate into lithium hydroxide; andreusing at least a first portion of said lithium hydroxide obtained by the electromembrane process for reacting with the metal sulfate;reacting at least a second portion of said lithium hydroxide obtained by the electromembrane process with the obtained metal hydroxide to obtain a mixture of metal hydroxides; androasting said mixture of metal hydroxides to obtain the metal oxide.

This invention discloses a method for synthesizing a mordenite molecular sieve-encapsulated metal catalyst for the synthesis of ester compounds, comprising the following steps: 1) mixing a water-soluble metal salt sequentially with an amine ligand and an alkali metal hydroxide to obtain a preliminary mixture solution; 2) mixing the preliminary mixture solution sequentially with an aluminum source and a silicon source to obtain a gel; 3) crystallizing the gel at 160–180 °C, cooling after crystallization, and separating to obtain an initial solid; 4) drying and calcining the obtained initial solid to obtain a preliminary molecular sieve; 5) placing the preliminary molecular sieve in an inorganic ammonium salt solution for ion exchange, separating the reactants after ion exchange to obtain a solid, drying and calcining the solid to obtain a mordenite molecular sieve-encapsulated metal catalyst for the synthesis of ester compounds. The catalyst obtained by this synthesis method can be used for the carbonylation of dimethyl ether to produce methyl acetate, exhibiting a relatively fast reaction rate while maintaining a high conversion rate of dimethyl ether.