629 results about "Metal hydroxide" patented technology

The invention discloses crack-chloride ion double-triggered subsea tunnel corrosion-resistant concrete and a preparation method thereof, and relates to the field of subsea tunnel engineering materials. The concrete is prepared from the following components in parts by weight: 400 to 500 parts of Portland cement, 50 to 80 parts of fly ash, 60 to 100 parts of superfine mineral powder, 1000 to 1100 parts of coarse aggregate, 700 to 800 parts of fine aggregate, 140 to 160 parts of water, 10 to 20 parts of self-repairing microcapsules and 1 to 5 parts of a water reducing agent, the self-repairing microcapsule comprises a capsule wall material, a self-repairing material and a layered dihydroxyl composite metal oxide. A crack-chloride ion double-response system is constructed, and the limitation of traditional single trigger repair is broken through. When a crack with a certain width appears in the concrete, the capsule wall of the self-repairing microcapsule is broken to release the repairing component, so that effective filling of the crack is realized; and meanwhile, the layered double-metal hydroxide can directionally adsorb chloride ions to form a stable compound, so that the migration rate of the chloride ions is remarkably reduced.

The invention relates to an elementary substance / alloy-metal oxyhydroxide anchored noble metal single atom / cluster heterojunction catalyst. A preparation method comprises the following steps: 1) dissolving a metal salt A, urea and ammonium fluoride in deionized water to obtain a mixed solution B; 2) performing hydrothermal reaction on the mixed solution B and a carrier to obtain a primary sample 1; 3) performing high-temperature calcination on the primary sample 1 in a mixed atmosphere of hydrogen and argon to obtain a primary sample 2; and 4) putting the preliminary sample 2 into a noble metal compound C solution for vacuum impregnation, taking out the sample after impregnation, and drying to obtain the catalyst. According to the scheme, the metal salt A is used as a metal source of a simple substance / alloy, the metal salt A is subjected to hydro-thermal synthesis to form a metal hydroxide and then subjected to high-temperature calcination reduction, the metal salt A is calcined to form the simple substance / alloy, then the simple substance / alloy is soaked in the precious metal compound solution C to form a metal oxyhydroxide, and meanwhile precious metal single atoms / clusters are anchored; the prepared catalyst is high in activity, and the preparation method is simple.

The invention discloses an environment-friendly halogen-free flame-retardant composite special cable, and belongs to the technical field of cable preparation, the special cable sequentially comprises a conductor, an insulating layer, a glass fiber rope layer and an outer protective sleeve from inside to outside, and the insulating layer and the outer protective sleeve are prepared from a modified flame-retardant copolymer. The modified flame-retardant copolymer is prepared from the following raw materials in parts by weight: 65 to 80 parts of linear low-density polyethylene, 20 to 38 parts of ethylene-vinyl acetate copolymer, 5 to 10 parts of modified P-N-Si flame retardant 1, 3 to 6 parts of modified P-N-Si flame retardant 2, 0.5 to 1 part of initiator, 0.2 to 0.5 part of antioxidant and 25 to 35 parts of non-reactive flame retardant through melt copolymerization; a polyfunctional and rigid organic modified P-N-Si flame retardant is grafted, so that the migration of the flame retardant is reduced, the crosslinking degree is increased, and the mechanical and high-temperature-resistant properties are improved; the organic P-N-Si, the inorganic non-reactive flame retardant metal hydroxide and the nano inorganic particles have a synergistic effect, so that the cable is endowed with high flame retardance.

The invention is suitable for the technical field of MCA, and provides an MCA / PA6 flame-retardant composite material and a preparation method thereof. Comprising the following components in parts by weight: 50-60 parts of MCA, 15-20 parts of PA6, 15-25 parts of long glass fiber, 3-8 parts of metal hydroxide, 0.5-1.5 parts of titanium dioxide, 0.3-0.6 part of an antioxidant, 1-2 parts of nano silicon dioxide, 1-3 parts of zinc molybdate, 2-5 parts of aluminum hypophosphite, 1-2 parts of silicone resin, 0.5-1 part of carbodiimide and 5-8 parts of a toughening agent. The MCA / PA6 flame-retardant composite material disclosed by the invention combines the flame-retardant property of MCA and the excellent physical property of PA6, so that the flame-retardant property of the material is remarkably improved, and meanwhile, the original characteristics of light weight, good toughness, chemical resistance, good durability and the like of PA6 are maintained. By adding the long glass fiber, the metal hydroxide, the titanium dioxide, the antioxidant, the nano silicon dioxide, the zinc molybdate, the aluminum hypophosphite, the silicone resin, the carbodiimide, the flexibilizer and other components, the strength, the heat resistance and the flame retardant effect of the composite material are further enhanced.

The invention relates to the technical field of supercapacitors, and particularly discloses a spherical hollow multi-layer high-entropy metal oxide and a preparation method and application thereof. The spherical hollow multi-layer high-entropy metal oxide is prepared by the following steps: cross-linking metal cation nitrate comprising iron nitrate nonahydrate, zinc nitrate hexahydrate, copper nitrate hexahydrate, cobalt nitrate hexahydrate and nickel nitrate hexahydrate with dextrose monohydrate to generate spherical high-entropy metal hydroxide FeZnCuCoNi-HO with a solid core structure, and annealing to induce the metal hydroxide. And the spherical hollow multi-layer high-entropy metal oxide is formed. Compared with the prior art, the high-entropy metal oxide is prepared through a low-energy-consumption and simple synthesis method, the problem of volume change of the high-entropy metal oxide serving as an electrode material in the circulation process is solved, more reaction active sites are provided, an ion diffusion path is improved, and the specific capacitance of the composite material is improved while the specific capacitance of the composite material is improved. And the stability of the material is maintained, so that the energy storage performance of the supercapacitor is improved.

A battery module includes neighboring first and second battery cells and a heat sink in contact with and configured to absorb thermal energy from each of the battery cells. The module additionally includes a module enclosure surrounded by ambient environment, housing each of the first and second battery cells and the heat sink, and configured to include a thermal conductivity path from the first cell to at least one of the second cell and the heat sink and from the heat sink to the enclosure. The battery module further includes a metal-hydroxide element configured to undergo a chemical decomposition and discharge moisture within the thermal conductivity path in response to thermal energy released by the first cell when the first cell undergoes a thermal runaway event. The metal-hydroxide element thereby controls propagation of the thermal runaway event from the first cell to the second cell.

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 cement materials, in particular to an anti-carbonization early strength agent for super sulfate cement and a preparation method of the anti-carbonization early strength agent. The carbonization-resistant early strength agent comprises a modified inner core formed by water-soluble silicate and high-molecular water-absorbent resin in which water is stored, an aluminum and calcium-containing layered double-metal hydroxide intermediate layer coated on the outer surface of the inner core, and a silicon and / or aluminum active nano material shell layer coated on the outer surface of the intermediate layer, thus, the anti-carbonization early strength agent with a dual-core shell structure of Si / Al at Ca / Al-LDHs at modified core is formed. The anti-carbonization early strength agent provided by the invention effectively solves the problems of long setting and hardening time, low early strength, easy carbonization and the like of traditional super sulfate cement.

The invention discloses high-strength plastic particles as well as a preparation method and application thereof, and belongs to the technical field of high polymer material modification. The plastic particle is prepared from high-density polyethylene, hyperbranched polyesteramine containing a diurea group, a layered double metal hydroxide-polypyrrole nano hybrid, a maleic anhydride grafted ethylene-octylene copolymer, an antioxidant and calcium stearate. Wherein the hyperbranched polyesteramine containing the diurea group is prepared by reacting pentaerythritol with citric acid to generate a citrate framework and then reacting with diphenylmethane diisocyanate and 1, 4-butanediol; the layered double hydroxide-polypyrrole nano hybrid is prepared by carrying out in-situ polymerization and coating on magnesium-aluminum layered double hydroxides through a pyrrole monomer. According to the plastic particle, the tensile strength, the heat resistance and the flame retardance are remarkably improved through synergistic enhancement of the hyperbranched polyesteramine and the nano hybrid, and the plastic particle can be applied to the fields of automobile bumpers, high-voltage cable sheaths, weather-proof plates for buildings and the like.

The invention discloses a foamed nickel-based composite material based on an electro-deposition / hydrothermal synthesis method, which is characterized in that firstly, foamed nickel NF is used as a substrate, cobalt hydroxide is loaded on the surface of the NF through electro-deposition, and Co (OH) 2 / NF with a lamellar stacked flower-shaped structure is obtained; the preparation method comprises the following steps: preparing NiCo-LDH (layered double hydroxide) Co (OH) 2 / NF, then converting the NiCo-LDH (layered double hydroxide) Co (OH) 2 / NF into ZIF-67 through an impregnation method to obtain ZIF-67 (at) Co (OH) 2 / NF with a regular dodecahedron structure, and finally, preparing NiCo-LDH (at) Co (OH) 2 / NF with a honeycomb stacked structure through a hydrothermal method. The preparation method comprises the following steps: 1, preparing foamed nickel electro-deposition cobalt hydroxide; 2, preparing the foamed nickel loaded ZIF67 and cobalt hydroxide; and 3, preparing the nickel foam loaded nickel-cobalt layered double-metal hydroxide and cobalt hydroxide. When the material is used as a supercapacitor material, the area specific capacitance is 17-18F cm <-2 > when the current density is 1mA cm <-2 >; and when the current density is 10mAcm <-2 >, 70-80% of the initial capacity is still kept after 5000 charge-discharge cycles are carried out.

The invention provides a metal hydroxide (LDH) and a preparation method and application thereof in seawater electrolysis, and belongs to the field of new materials and hydrogen energy preparation. Aqueous solutions of ferric salt, cobalt salt and nickel salt are stirred to obtain a mixed solution; under a constant voltage, metal ions of the mixed solution are subjected to a reduction reaction on the surface of the working electrode to generate ternary NiCoFe-LDH, namely, the metal hydroxide is obtained; according to the method, a high-activity and high-stability nano-structure material directly grows on a conductive substrate through an electrochemical deposition method of three metal (Fe, Co and Ni) hydroxides in a specific proportion, and the low-cost seawater electrolysis catalyst can be constructed only through direct in-situ growth of LDH through a potentiostatic method, so that the high-temperature and high-pressure requirements of a traditional hydrothermal method are avoided, and the method is suitable for industrial production. The LDH nanosheet array structure directly grown in the invention avoids the use of a binder, improves the mechanical stability of the electrode and prolongs the cycle life of the electrode. The ternary NiCoFe-LDH is used as an anode material of an electrolytic tank and can be used for directly electrolyzing seawater to produce hydrogen.

The invention belongs to the technical field of new energy materials, and discloses preparation and application of a cobalt and iron bimetal-based sulfide self-supporting cathode catalytic material for a zinc-air battery. The invention provides a self-supporting catalytic material FeS / CoS1.097 atN / CC which is successfully prepared by taking bimetallic-hydroxide as a precursor, loading ZIF-67 particles at room temperature and finally carrying out vulcanization and carbonization through a one-step vapor deposition method. The preparation method is simple and efficient, multiple active sites of the metal hydroxide and high specific surface area of an MOFs material are combined, and the self-supporting catalytic material is prepared. Meanwhile, a nitrogen-doped carbon-coated structure is constructed, the design of a heterostructure is meticulously regulated and optimized, and active sites are increased. Therefore, the catalyst FeS / CoS1.097-coated NC / CC has relatively high practical significance and application value in the aspects of realizing bifunctional catalytic activity and good cycling stability.

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 application relates to the technical field of rubber sealing materials, and discloses a high and low temperature resistant fluororubber sealing element and a preparation method thereof. The high and low temperature resistant fluororubber sealing element is prepared from fluororubber raw rubber, reinforcing fillers, inorganic fillers, acid absorbents, processing aids and vulcanizing agents, wherein the acid absorbents are prepared from metal hydroxides and metal oxides in a mass ratio of (2-5):(1-3), and the processing aids are prepared from amide flow aids, polyethylene wax and fatty acid metal salts in a mass ratio of (1-2.5):(0.8-2):(0.5-1). The prepared high and low temperature resistant fluororubber sealing element has excellent mechanical properties, high temperature resistance, low temperature resistance and compression permanent deformation performance, and effectively solves the technical problems of easy aging of existing fluororubber sealing elements at high temperatures, large compression permanent deformation and easy brittle cracking at low temperatures. The preparation method adopts a mixing and vulcanization process, the preparation method is simple, and the method is suitable for large-scale production.

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 present invention relates to a method for preparing a flame retardant aid, and a flame retardant resin composition including a flame retardant aid prepared by the same, wherein the method includes preparing a metal precursor solution by adding a zinc precursor and a precursor containing an M1 metal, and preparing a multi-component metal hydroxide by adding an acid or a base to the metal precursor solution to proceed with a sol-gel reaction.

A flame-retardant cable includes at least one core having a conductor and at least one protecting layer surrounding the core. The protecting layer is made from a low smoke zero halogen (LS0H) flame-retardant polymer composition having at least 70 phr of a polyethylene homopolymer or copolymer having a density lower than 0.90 g / cm3 as a halogen-free polymeric base, 100 to 800 phr of at least one metal hydroxide, and at least 10 phr of a tannin.

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.

A catalyst includes a catalyst particle including a first metal atom and an active site group attached to the first metal atom via one or more oxygen bridges. The active site group comprises a boric acid group, a metal hydroxide group or a metal oxide group. The metal hydroxide group includes a second metal atom or beryllium, and the metal oxide group includes a second metal atom. The second metal atom is different from the first metal atom and includes aluminum, gallium, indium, or bismuth.

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.

To coat a ZnO surface with a safe and stable oxide.SOLUTION: A coated particle of the present invention includes ZnO of which at least a part is covered with ZnMOx (M is a metal element capable of constituting a composite metal oxide together with Zn). The coated particle is obtained by hydrothermal treatment of ZnO in the presence of a hydroxide of a metal capable of constituting a composite metal oxide together with Zn. The coated particle is suitable for an ultraviolet shielding agent, a cosmetic containing the same, and a paint having an ultraviolet shielding function, a gas permeation suppression function, or the like.SELECTED DRAWING: Figure 5

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 provides a multifunctional textile fabric and a preparation method thereof, and belongs to the technical field of textile fabrics. The preparation method of the multifunctional textile fabric comprises the following steps: performing singeing, desizing and boiling-off treatment on a fabric in advance to obtain a standby fabric; mixing the novel flame-retardant finishing agent with ammonium polyphosphate and deionized water to obtain flame-retardant finishing liquid; the standby fabric is placed in the flame-retardant finishing liquid to be subjected to dipping treatment, drying is conducted after treatment is completed, and the multifunctional textile fabric is obtained. Functional modification is performed on the fabric, so that the flame retardance and water repellency of the fabric are greatly improved. According to the invention, the magnesium-iron double-metal hydroxide modified by alkyl sulfosuccinic acid diester sodium salt containing allyl is introduced, so that the flame retardance, thermal stability and other properties of the fabric are improved.

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.

Provided is a method for producing a nickel powder with which it is possible to suppress the generation of linked particles in a liquid-phase synthesis method without hindering the reduction reaction of a nickel salt. A method for producing a nickel powder, the method including a step for starting a nickel precipitation reaction in a reaction solution in which a nickel salt, a metal having a lower ionization tendency than nickel or a salt thereof, a reducing agent, an alkali metal hydroxide, a sulfonium salt, and water are mixed, the sulfonium salt being used in an amount of 100 mol% or more relative to the nickel in the reaction solution.