155 results about "Barium oxide" patented technology

The invention discloses a radiation refrigeration coating and a preparation method thereof. The radiation refrigeration coating comprises a first filler and a second filler, the mass ratio of the first filler to the second filler is (1-3): (1-5), and the first filler comprises the following components in percentage by weight: 50-70% of a polyurethane emulsion, 10-15% of a silane coupling agent, 8-10% of multi-mesoporous nano-silica and 5-8% of talcum powder; the second filler comprises the following components in percentage by weight: 60%-70% of polyethylene glycol, 10%-15% of a dispersing agent and 5%-8% of nano barium oxide; 5%-8% of tannic acid; 3%-5% of nano silver; the viscosity of the polyurethane emulsion ranges from 300 cps to 800 cps. The radiation refrigeration coating disclosed by the invention has the advantages that a refrigeration film has larger infrared radiation refrigeration capacity in an atmospheric window, better ultraviolet light absorption capacity and long service life.

The present invention generally relates to a process of fabricating an asymmetric supercapacitors device comprising synthesizing a BaO and CeO2 thin film as a first electrode using a one-step successive ionic layer adsorption and reaction (SILAR) method for uniform deposition and adhesion on a conductive substrate; synthesizing an activated carbon (AC) electrode as a second electrode; formulating a solid-state electrolyte layer comprising polyvinyl alcohol (PVA) and potassium hydroxide (KOH), wherein the solid-state electrolyte layer is formed as a gel; assembling the device by layering the first electrode, the solid-state electrolyte layer, and the second electrode in a stacked configuration, wherein the assembled device is allowed to stabilize for a period of 12-24 hours at room temperature to ensure uniform distribution of the electrolyte and structural integrity; and pressing the assembled layers together to enhance contact between electrodes and the electrolyte.

The present disclosure herein discloses a skeleton supported catalyst and a method for preparing allyl alcohol polyoxyethylene ether by using the same. The skeleton supported catalyst is a catalyst loaded with barium oxide, potassium oxide, yttrium oxide within a copper skeleton. A method comprising: putting the skeleton supported catalyst into a reaction vessel, and after adding nitrogen to the reaction vessel, adding dried and dehydrated allyl alcohol or the allyl alcohol polyoxyethylene ether with low molecular weight to the reaction vessel, raising the temperature, and continuously introducing dried and dehydrated ethylene oxide for reaction; after the reaction being completed, cooling down, and filtering and discharging to obtain after the reaction being completed, cooling down, and filtering and discharging to obtain a finished product of the allyl alcohol polyoxyethylene ether. The allyl alcohol polyoxyethylene ether product prepared by the skeleton supported catalyst of the present disclosure has excellent product performance.

The invention discloses a deeply-curable zirconia-containing dental repair resin and a preparation method thereof.The preparation method comprises the steps that a double-bond-containing silane coupling agent is added into a zirconia dispersion liquid and a silicon dioxide dispersion liquid respectively, modification reaction is conducted in the stirring state, and a modified solution # imgabs0 # and a modified solution II are obtained; carrying out spray drying on the modified solution I and the modified solution II through a three-fluid spray head to obtain a zirconium oxide and silicon oxide nanocluster body; uniformly mixing and stirring the zirconium oxide and silicon oxide nanocluster with a methacrylate organic matrix and a photoinitiator; and carrying out light curing treatment on the mixture to obtain the zirconium oxide dental repair resin. The zirconium oxide dispersion liquid, the silicon dioxide dispersion liquid and the three-fluid spray head are matched, the mechanical performance is improved on the premise that the X-ray radiation resistance and the effective curing depth are guaranteed, the dependence of the industry on zinc oxide, barium oxide and strontium oxide is broken through, the problem that a zirconium oxide material cannot be deeply cured due to the high refractive index is solved, and the application prospect is good.

The invention provides a composite hydrogen transfer catalyst based on an MOFs material as well as a preparation method and application of the composite hydrogen transfer catalyst. The composite hydrogen transfer catalyst comprises the MOFs material loaded with an active metal component and solid alkali, the active metal component is selected from at least one of palladium, platinum, ruthenium, rhodium and nickel; the active metal component accounts for 0.5-5% of the mass of the catalyst; the MOFs material is selected from at least one of ZIF-8, MIL-101, UiO-66, HKUST-1 and MOF-5 (Metal Organic Frameworks); the solid alkali is selected from at least one of magnesium oxide, calcium oxide, hydroxyapatite and barium oxide. The catalyst provided by the invention has the advantages of high catalytic activity, good selectivity, strong stability, reusability and the like, can efficiently catalyze fatty alcohol to perform hydrogen transfer reaction under a lower-temperature reaction condition to prepare Guerbet alcohol, remarkably improves the yield and purity of a product, and reduces the reaction energy consumption and cost.

The invention belongs to the technical field of metallurgy, and particularly relates to a slag charge for electroslag remelting in a high-altitude and high-humidity environment and a preparation method thereof.The slag charge is prepared from 20-22% of calcium fluoride, 25-28% of aluminum oxide, 20-25% of calcium oxide, 8-10% of magnesium oxide, 8-10% of silicon dioxide, 3-8% of rare earth oxide and 1-5% of barium oxide; for high altitudes (barometric lt; 90 kPa) and high humidity (relative humidity gt; the invention provides the low-hygroscopicity, low-fluorine and environment-friendly slag charge, so that the stability of the slag pool is improved, the oxyhydrogen control is realized, and the energy consumption is reduced.

Glass compositions include one or more of phosphorus oxide (P2O5), niobia (Nb2O5), titania (TiO2), potassium oxide (K2O) and lithium oxide (Li2O) as essential components and may optionally include barium oxide (BaO), zinc oxide (ZnO), V2O5 (vanadia), FeO (iron oxide) and other components.

The method comprises the following steps: (1) preparing high-temperature inorganic binding phase glass powder: heating silicon dioxide, aluminum oxide, calcium oxide, titanium oxide and barium oxide to a melting temperature, quenching, completely cooling, and crushing to obtain high-temperature inorganic binding phase glass powder; the inorganic binding phase glass powder is obtained; (2) weighing a conductive phase, a sintering framework, a catalyst and inorganic binding phase glass powder, and mechanically mixing to obtain composite powder; (3) preparing an organic carrier: uniformly mixing the additive solution with a solvent to obtain the organic carrier; and (4) preparing the copper oxide-tungsten conductive paste: mixing the composite powder with an organic carrier, grinding, and defoaming to obtain the copper oxide-tungsten conductive paste adaptive to the medium-temperature co-fired ceramic. The blank in the field of medium-temperature co-fired ceramic conductive paste is filled, and the medium-temperature co-fired ceramic conductive paste has an obvious price advantage.

The invention relates to silver-covering glass powder prepared by reductive ball milling, glass ink and a preparation method of the silver-covering glass powder and the glass ink. The silver-covering glass powder is prepared by ball-milling glass frits, a reducing medium and a reducing auxiliary agent through a reducing ball-milling process; the glass frit is prepared from the following substances in percentage by mass: 35-40% of silicon dioxide, 10-20% of boric acid, 10-20% of zinc oxide, 3-10% of calcium sulfate, 3-6% of titanium dioxide, 16-20% of carbonate, 1-3% of magnesium oxide, 1-3% of aluminum oxide and 1-3% of barium oxide. And the particle size of the silver-covering glass powder after ball milling is 5-15 [mu] m. Compared with the prior art, the reducing ball milling medium is introduced in the refining process of the glass powder and is matched with the reducing auxiliary agent to realize reduction treatment of the glass powder, the silver covering and acid resisting effects of the glass printing ink are considered, and the glass printing ink has the characteristics of low carbon, environment friendliness and simple process.

This invention relates to the field of glass-ceramic technology, specifically providing a low-temperature co-fired ceramic, its preparation method, and its application. The raw materials for the low-temperature co-fired ceramic include VSBBS glass frit and ceramic frit, with the total weight of the VSBBS glass frit and ceramic frit being 100%. The mass percentages of the VSBBS glass frit and ceramic frit are 20-40% and 60-80%, respectively. The raw materials for the VSBBS glass frit, by mass percentage, include 10-30 wt% vanadium oxide, 10-30 wt% antimony oxide, 10-30 wt% barium oxide, 10-20 wt% boron oxide, and 30-50 wt% silicon oxide, with the sum of all oxides being 100%. The LTCC material obtained by this invention achieves excellent millimeter-wave dielectric properties, with a relative permittivity between 4.8 and 6.8, a dielectric loss less than or equal to 0.001, and a flexural strength of 180-230 MPa.

Provided is an anti-counterfeiting composition for anti-counterfeiting fibers, including a carrier, an anti-counterfeiting tracer and a dispersant, wherein the anti-counterfeiting tracer is composed of barium oxide, strontium oxide, aluminum oxide and zinc oxide, and a barium element content, a strontium element content, an aluminum element content, and a zinc element content in the anti-counterfeiting composition is controlled to a fixed feeding mass ratio; in percent by mass, the sum of the barium element content, strontium element content, aluminum element content, and zinc content accounts for 5-50% of the anti-counterfeiting composition; the carrier is a matrix polymer or a bio-derived oil. The anti-counterfeiting composition of the present disclosure can give the anti-counterfeiting fiber advantages of memory tracking properties and identification functions, high anti-counterfeiting capability, and good anti-counterfeiting concealment.

The invention belongs to the technical field of radioactive waste treatment, and discloses a ceramic solidified body for synergistically solidifying radioactive iodine and cesium as well as a preparation method and application of the ceramic solidified body. The chemical formula of the ceramic solidified body is (Cs2xBa2-2x) (AgyNa1-y) IO6, x is equal to 0.1-0.9, y is equal to 0.1-0.9, and the ceramic solidified body is prepared by mixing silver iodide, barium hydroxide, sodium periodate and cesium carbonate, carrying out dry pressing molding under 20-60 MPa to obtain a rough blank, sintering at 500-700 DEG C, carrying out cold sintering at 200-300 DEG C, and finally annealing at 500-600 DEG C. The curing amount of iodine in the ceramic cured body is 2.4-20 wt%, the curing amount of cesium is 4-46 wt%, and the ceramic cured body has excellent chemical stability and is suitable for curing radioactive iodine and cesium and long-term geological treatment.

The invention relates to the technical field of OLED packaging, in particular to a method for improving the OLED packaging effect. The invention provides a method for improving the packaging effect of an OLED (Organic Light Emitting Diode), which comprises the following steps: preparing a composite film of calcium oxide and barium oxide on the surface of an OLED device, and sequentially carrying out glass laminating and packaging treatment to obtain a packaged OLED. According to the invention, the composite film of calcium oxide and barium oxide is introduced between the OLED device and the packaging structure to absorb water vapor, so that the compactness and barrier property of the packaging layer are improved, the erosion of water vapor to the OLED is effectively blocked, and the purpose of remarkably improving the packaging property and stability of the OLED is achieved. Therefore, the service life of the OLED is obviously prolonged; and the method is simple and feasible, and is suitable for large-scale production.

This application discloses a method for producing acetonitrile by amination of acetate, comprising the following steps: in a reactor, acetate, ammonia, and a catalyst are contacted and reacted to obtain acetonitrile; wherein the acetate is selected from at least one of methyl acetate, ethyl acetate, propyl acetate, butyl acetate, and cyclohexyl acetate; the catalyst is composed of a support and alkaline earth metal oxides and alkali metal oxides supported on the surface of the support; wherein the support is selected from at least one of silicon oxide, aluminum oxide, titanium oxide, and zirconium oxide; wherein the alkaline earth metal oxide is selected from at least one of magnesium oxide, calcium oxide, strontium oxide, and barium oxide; wherein the alkali metal oxide is selected from at least one of lithium oxide, sodium oxide, and potassium oxide; wherein the loading of alkaline earth metal oxide in the catalyst is 0.01–10 wt%, the loading of alkali metal oxide is 0.05–5 wt%, and the remainder is the support.

The invention discloses a cooling anti-radiation coating. The cooling anti-radiation coating comprises a surface coating, a middle coating and a bottom coating, the surface coating comprises the following components in percentage by weight: 40-60% of polyethylene, 1-5% of carbon nanotubes, 1-5% of graphene oxide, 10-15% of a dispersant, 5-8% of polyethylene glycol, 3-8% of nano barium oxide and 3-10% of nano boron nitride. The intermediate coating comprises the following components in percentage by weight: 50%-70% of polyurethane, 20%-30% of a silane coupling agent and 5%-10% of aluminum oxide; the bottom coating comprises the following components in percentage by weight: 70%-80% of resin, 7%-9% of talcum powder, 2%-4% of aluminum oxide and 3%-10% of hydroxyethyl cellulose. The cooling anti-radiation coating formed by the synergistic cooperation of the components has high electromagnetic shielding performance and long service life.

The invention discloses a high-speed rail sound screen wall self-repairing nano coating and a preparation method thereof, and belongs to the technical field of coatings, sodium alginate is crosslinked with calcium ions in calcium chloride, gel microspheres are formed on the surface of porous shell powder, a self-repairing agent is wrapped in the gel microspheres, barium nitride is hydrated to form barium hydroxide under the excitation action of water, and the self-repairing nano coating is formed. Barium hydroxide belongs to an alkaline compound, and through the wrapping effect of the microcapsule, the corrosion effect on a modified binder in a system can be reduced, so that the material has the advantages of light weight, sound insulation, good acid and alkali resistance, washing resistance and compressive strength; polyvinyl alcohol is used as a bridge, hydroxyl of polyvinyl alcohol is combined with carboxyl of carboxymethyl chitosan and then copolymerized with vinyl acetate to form a three-dimensional network structure, cohesive force of the adhesive and adhesive force to a base material are greatly improved, calcium ions are separated out due to the alkaline effect of barium hydroxide, and meanwhile the crosslinking strength of the adhesive can be improved; the bonding strength is further improved.

This invention discloses a slab with a crystalline effect. The slab includes a blank layer, on the surface of which a glaze modifier is applied to form a glaze modifier layer. The glaze modifier comprises the following raw materials in parts by weight: 5-8 parts potassium feldspar, 4-7 parts calcined talc, 3-5 parts modified translucent stone agent, 3-5 parts calcium oxide, 2-4 parts barium oxide, 1-3 parts cobalt oxide, and 2-4 parts strontium carbonate modifier. The slab with a crystalline effect of this invention is formed by applying the glaze modifier. The glaze modifier uses potassium feldspar, calcined talc, calcium oxide, barium oxide, and cobalt oxide as a matrix. By adding strontium carbonate modifier and modified translucent stone agent, the two are synergistically enhanced, improving the crystalline effect of the product and increasing its stain resistance and easy-to-clean properties. Simultaneously, the product exhibits significant improvements in scrub resistance and alkali corrosion resistance.

This disclosure relates to systems and methods for gas mitigation. In one aspect of the disclosure, a battery is presented. The battery has a de-gassed lithium-manganese rich battery cell and a lithium-based anode packaged with a lithium-manganese-rich cathode, saturated in an electrolyte. A barium oxide-based coating is in the de-gassed lithium-manganese rich battery cell, and configured to convert oxygen and carbon dioxide into barium peroxide and carbonate and retain the barium peroxide and carbonate.

The invention discloses a high-strength low-adsorption high-silicon ceramic tea ware. A green body of the ceramic tea ware is prepared from the following raw materials in parts by weight: 70 to 72 parts of silicon dioxide, 20 to 25 parts of aluminum oxide, 1.3 to 1.8 parts of potassium oxide, 0.8 to 1.0 part of sodium oxide, 0.2 to 0.4 part of calcium oxide, 0.1 to 0.2 part of magnesium oxide, 0.5 to 1.0 part of barium oxide, 0.5 to 2.0 parts of zinc oxide and 1.0 to 3.0 parts of zirconium oxide. According to the invention, aluminum oxide can react with silicon dioxide in the sintering process to form mullite Al2O3.2SiO2 and form a K2O-Al2O3-SiO2 ternary phase diagram system, and aluminum oxide, barium oxide, zinc oxide and zirconium oxide are adopted, so that the lowest eutectic point is reduced, the toughness of a green body is enhanced, the stability and impact strength of the green body are improved, and the heat stability of the green body is high; the ceramic body can adapt to water heat exchange at 180-20 DEG C, and high strength and low adsorption performance of the ceramic body are achieved.

The invention discloses a carbon nanotube master batch, a polyethylene composite material and a preparation method and application thereof, and belongs to the technical field of high polymer materials, the carbon nanotube master batch has a core-shell structure, the core comprises a carbon nanotube and iron barium oxide, and the shell is polyethylene grafted maleic anhydride; the mass ratio of the core to the shell is 1: (0.25-5); the mass ratio of the carbon nanotubes to the iron barium oxide is (1-9): 1. According to the invention, by coating the carbon nanotubes and the iron-barium-oxygen bodies, the dispersibility of the carbon nanotubes and the iron-barium-oxygen bodies in polyethylene is effectively improved, the agglomeration phenomenon is avoided, the interface bonding force with polyethylene is improved, the carbon nanotubes and the iron-barium-oxygen bodies are taken as cores, a tough composite reinforced core is formed, external loads can be effectively absorbed and dispersed, and the tensile strength of polyethylene is improved. The strength, the self-repairing property and the scratch resistance of the composite material are improved, and the carbon nanotube master batch is suitable for the fields of aerospace, electronics and electrics, medical equipment and 5G communication.

The invention provides a lithium ion battery gas getter. The present disclosure relates to systems and methods for gas mitigation. In one aspect of the present disclosure, a battery is presented. The battery has a degassed lithium-rich manganese battery cell and a lithium-based anode encapsulated with a lithium-rich manganese cathode saturated in an electrolyte. A barium oxide-based coating is in the degassed lithium-rich manganese battery cell and is configured to convert oxygen and carbon dioxide to barium peroxide and carbonate and retain the barium peroxide and the carbonate.

The invention relates to the production of radiation-shielding zinc-barium-borosilicate glass materials, in particular for X-rays and / or gamma-rays and / or fast neutrons and the like, from readily available, low-cost and abundant available starting materials by means of uniquely designed glass compositions. Sodium oxide (Na2O), silicon dioxide (SiO2), boron oxide (B2O3), calcium oxide (CaO), barium oxide (BaO), zinc oxide (ZnO), bismuth oxide (Bi2O3), gadolinium oxide (Gd2O3) and cerium oxide (CeO2) are used in particular, when mixed, a satisfactory and effective shielding effect against X-rays and / or gamma-rays and / or fast neutrons and the like is provided.

Glass compositions include silica (SiO2), alumina (Al2O3) and calcium oxide (CaO) as components and may optionally include lithium oxide (Li2O), magnesia (MgO), sodium oxide (Na2O), phosphorus oxide (P2O5), barium oxide (BaO), strontium oxide (SrO), B2O3 and other components. Glasses formed from the glass compositions may be characterized by high specific modulus and a high temperature at which the glass has a viscosity of 160 kP.

The application relates to the technical field of inorganic nonmetallic materials, and particularly discloses a foamed ceramic material and a preparation method thereof. The material is prepared from solid waste-based main materials, a foaming agent and a stabilizing additive containing barium oxide, magnesium oxide and titanium dioxide. The preparation method comprises the following steps: after the raw materials are mixed according to the proportion, wet ball milling is carried out to prepare slurry, the obtained slurry is sprayed and dried to prepare powder, and finally, the powder is sintered and formed under a specific sintering system in an air atmosphere. By introducing a BaO-MgO-TiO2 ternary synergistic stabilization system, the technical problems of unstable solidification, interference in the foaming process and uneven product performance existing in the traditional carbon reduction method for treating chromium-manganese-containing solid waste are effectively solved, long-term chemical fixation of harmful elements in the ceramic matrix is realized, a foamed ceramic product with excellent environmental safety and good physical performance is successfully prepared, and a new way is provided for high-value resource utilization of large quantities of industrial hazardous waste.

The invention relates to the field of inorganic non-metallic materials, and discloses a high-brightness long-afterglow luminescent ceramic material and a preparation method thereof.The material is composed of calcium fluoride, zinc sulfide, strontium sulfide, kaolin, quartz, albite, titanium dioxide, barium oxide, iron oxide and phosphorus pentoxide, a SiO2-Y2O3 crystal boundary regulation phase is introduced, the luminous efficiency and trap level distribution are optimized, and the luminous efficiency is improved. The preparation method comprises the steps of raw material ball milling, pre-sintering, cold press molding, three-section gradient hot pressed sintering, reduction annealing and polishing, and high densification and crystal grain controllable growth are achieved through staged temperature control pressurization. The initial brightness of the obtained material is greater than or equal to 800cd / m, the afterglow is greater than or equal to 11 hours, and the standard deviation of luminescence uniformity is lt; and the process is compatible with a conventional production line, the energy consumption is low, the cost is controllable, and the method is suitable for the fields of emergency indication, building decoration, intelligent wearing and the like.

The invention discloses a rock plate with a flash crystal effect, the rock plate comprises a green body layer, a glaze modified material is applied to the surface of the green body layer to form a glaze modified layer, and the glaze modified material comprises the following raw materials in parts by weight: 5-8 parts of potassium feldspar, 4-7 parts of calcined talcum powder, 3-5 parts of a modified light-transmitting stone agent, 3-5 parts of calcium oxide, 2-4 parts of barium oxide, 1-3 parts of cobalt oxide and 2-4 parts of a strontium carbonate modifier. The rock plate with the flash crystal effect is formed by applying the glaze modified material, the glaze modified material takes the potassium feldspar, the burnt talcum powder, the calcium oxide, the barium oxide and the cobalt oxide as a matrix, and the strontium carbonate modifier and the modified light-transmitting stone agent are added for coordination and joint synergism, so that the flash crystal effect of the product is improved by the obtained glaze modified material, and the flash crystal effect of the product is improved. Meanwhile, the product is remarkable in scrubbing resistance, alkali corrosion resistance and stability.

Disclosed is a radiation shielding zinc-barium-borosilicate glass material produced from easily accessible, low-cost and abundantly available starting raw materials, particularly for X-rays and / or gamma rays and / or fast neutrons and / or the like, having unique glass compositions. In particular, disclosed is the use of sodium oxide (Na2O), silicon dioxide (SiO2), boron oxide (B2O3), calcium oxide (CaO), barium oxide (BaO), zinc oxide (ZnO), bismuth oxide (Bi2O3), gadolinium oxide (Gd2O3) and cerium oxide (CeO2), which when mixed provides a satisfactory and effective shielding effect against X-rays and / or gamma rays and / or fast neutrons and / or the like.

The invention provides a preparation method of a biomass platform molecule angelica lactone isomerization catalyst. The catalyst comprises one of the following solid metal oxides and one of potassium assistants: eight metal oxides (m-zirconium oxide, t-zirconium oxide, c-zirconium oxide, aluminum oxide, magnesium oxide, barium oxide, lanthanum oxide and neodymium oxide) and seven potassium sources (potassium nitrate, potassium carbonate, potassium acetate, potassium hydroxide, potassium chloride, potassium oxalate and potassium oxide). By designing the preparation method of the metal oxide, the high-specific-surface-area pure-crystalline-phase metal oxide is obtained; by introducing the potassium aid, the surface alkalinity of the catalyst is effectively regulated and controlled, so that the alpha-angelica lactone is simply and efficiently isomerized into the beta-angelica lactone. The catalyst provided by the invention has the characteristics of high activity, high selectivity, high stability and easy recovery, and provides a feasible technical approach for biomass platform molecule angelica lactone isomerization.

The application relates to the field of gas sensors, and particularly discloses an electrochemical acetylene sensor electrode, a preparation method thereof and an electrochemical acetylene sensor. The electrochemical acetylene sensor electrode comprises a polytetrafluoroethylene film and a slurry coated on the polytetrafluoroethylene film, wherein the slurry comprises nano gold particles, nano magnesium oxide, nano barium oxide, modified conductive carbon powder and a Nafion solution in a weight ratio of (0.47-0.50):(0.02-0.20):(0.02-0.18):(1-3):(0.6-2.0); and the modified conductive carbon powder is obtained by mixing potassium permanganate, deionized water and conductive carbon and then performing ball milling. The application realizes the effects of high sensitivity and high linearity of acetylene gas, greatly improves the selectivity of the electrochemical acetylene sensor, and has the advantages of low detection limit, high sensitivity and good selectivity.