34 results about "Ceramic foam" patented technology

Thermal barrier systems are provided for inhibiting the transfer of thermal energy inside a traction battery pack. An exemplary thermal barrier system may include one or more thermal barrier assemblies arranged between adjacent battery cell groups of a cell stack. Each thermal barrier assembly may include a mica core, a first ceramic foam layer, a second ceramic foam layer, a first glass silicone layer, and a second glass silicone layer. In some implementations, the thermal barrier system may additionally include one or more cell expansion pad assemblies and / or one or more thermal barriers.

The invention discloses a fine distinguishing method for the refining capacity of a grain refiner, and relates to the technical field of grain refiner preparation.The fine distinguishing method for the refining capacity of the grain refiner comprises the following steps that S1, a certain mass of aluminum, titanium and boron is dissolved in molten aluminum, stirred for 30 s and stood for 60 s, then a specific square mold is used for sampling, and the adding amount of aluminum, titanium and boron should be 0.1%; s2, after aluminum, titanium and boron are dissolved, a ceramic foam filter is added to filter molten aluminum, undissolved titanium and boron clusters and oxide inclusions are removed, and the purity of a melt is ensured; s3, a square mold with the inner wall sprayed with a boron nitride coating (smaller than or equal to 50 microns) is used and preheated to 200 DEG C, molten aluminum is injected after moisture is removed, adhesion is avoided, and demolding integrity is improved; according to the fine distinguishing method for the refining capacity of the grain refiner, a traditional conical mold is modified into a common square mold, so that machining is more convenient, meanwhile, errors are reduced, experimental raw materials are saved, and the experimental time is shortened.

The invention provides an aluminum melt refiner dynamic regulation and control method which comprises the following steps: preparing a 1060 aluminum alloy raw material, and preheating to 220 DEG C; the preparation method comprises the following steps: adding raw materials into a smelting furnace, heating to 740 DEG C for melting, and adding an Al-5Ti-1B intermediate alloy; adding a refining agent, refining for 35 minutes, and standing for 20 minutes; the melt enters a degassing box, in the degassing box, a graphite rotor is used for rotating at the rotating speed of 350 rpm, and high-purity argon is introduced for degassing for 18 minutes; the melt is filtered through a ceramic foam filter and enters a front box; the temperature in the front box is adjusted to 690 DEG C, and a titanium wire adding device continuously adds titanium wires at the speed of 0.8 m / min; the melt enters a casting and rolling machine, casting and rolling are conducted at the speed of 1.0 m / min, and the liquid level height is controlled to be 60 mm; graphite-based paint is sprayed on the surface of the casting roller at the speed of 0.8 m / min; and performing macrostructure inspection on the cast-rolled plate, and evaluating the grain refinement effect. The method has the effects of stable grain refinement effect and high finished product quality.

High impact and penetration resistant lightweight composite panels include a foam core and an impact and penetration resistant protective layer on at least a portion of the lightweight composite panel. The foam core is a polymer and / or inorganic foam layer or sheet having first and second surfaces. A fiber mesh reinforced cementitious layer can cover one or both surfaces of the foam core. Example polymer foam cores include extruded polystyrene foam, expanded polystyrene foam, polyisocyanurate foam, or polyurethane foam. Example inorganic foam cores include perlite, ceramic microspheres, hollow glass spheres, glass foam, ceramic foam, expanded silica gel, porous wollastonite, urea-silicate foam, SiOC / SiC foam, refractory foam, and graphene. The impact and penetration resistant protective layer can be formed from polyurea, polyurethane, polyurea-polyurethane hybrid, polyaspartic, polymer-modified mineral binder, or hybrid resin-mineral composite. The protective layer can include a tightly woven scrim and / or a slip resistant filler embedded in the polymer.

A method of making an oven cavity of a cooking appliance, and a cooking appliance made therewith, are provided. The method includes forming a composite sheet via sheet molding compound. The composite sheet includes glass fiber impregnated with silicone polymer. An intermediate assembly is formed by disposing a layer comprising an insulative material onto a first layer of the composite sheet. The intermediate assembly is inserted into a mold. A compression load is applied to the intermediate assembly in the mold to obtain a molded piece. One or more of the molded piece forms a composite body that defines the oven cavity of the cooking appliance. The silicone polymer may include one or more of poly dimethylsiloxane, poly methylphenyl silanol, poly diphenyl silanol, and poly vinyl functional backbone silicones having methyl hydrosilane crosslinkers. The insulative material may include ceramic foam, hollow glass microspeheres, or recycled glass powder.

Foam compositions comprising an inorganic resin matrix or a polymer-derived ceramic matrix are provided, as well as methods of fabricating the same. The foams may or may not contain additional functional fillers to control mechanical and / or thermophysical properties. The foam materials can include a novel combination of tailorable inorganic siloxane resins with unique fillers, and unique methods of producing the desired porosity. Unlike related art foams, the foams of embodiments of the subject invention can be inorganic-resin-based, and can be closed cell foams or semi-closed cell foams.

The invention relates to the related technical field of standard part machining, and discloses integrated machining treatment equipment for standard part machining, which comprises a base, a frame is arranged on the upper side of the base, an injection assembly is arranged on the frame, and a casting mold is arranged on the upper side of the base; the injection assembly comprises a shell, a first cylinder is arranged in the shell, a square block is arranged in the first cylinder, a partition plate and a movable plate are arranged in the square block, a first solution cavity, a second solution cavity and an air cavity are formed in the square block, and a plurality of filter holes are formed in the upper portion of the partition plate at intervals; large impurities in a metal solution can be filtered through the multiple filtering holes, and then small impurities in the metal solution are filtered through the ceramic foam part; then the movable plate horizontally moves to drive the ceramic foam part to swing close to the partition plate, the ceramic foam part swings to drive the multiple protruding blocks to move, the multiple protruding blocks move to dredge the multiple filtering holes, and therefore the filtering effect of the multiple filtering holes is kept.

This invention provides a technology for ceramic structures that improves gas flowability while maintaining a certain level of strength, and also increases the specific surface area. [Solution] The ceramic structure comprises a ceramic foam having pores and formed of a plurality of first ceramic particles, and a covering portion covering the ceramic foam, which is formed of a plurality of second ceramic particles, wherein the average particle size of the plurality of second ceramic particles is smaller than the average particle size of the plurality of first ceramic particles.

The invention discloses a high-precision detection method for the refining performance of a grain refiner, and relates to the technical field of grain refiner preparation.The high-precision detection method for the refining performance of the grain refiner comprises the following steps that S1, a certain mass of aluminum-titanium-boron is dissolved in molten aluminum, stirred for 30 s and left to stand for 60 s, a specific square mold is used for sampling, and a sample is obtained; the addition amount of aluminum, titanium and boron is 0.1%; s2, after aluminum, titanium and boron are dissolved, a ceramic foam filter is added to filter molten aluminum, undissolved titanium and boron clusters and oxide inclusions are removed, and the purity of a melt is ensured; s3, a square mold with the inner wall sprayed with a boron nitride coating (smaller than or equal to 50 microns) is used and preheated to 200 DEG C, molten aluminum is injected after moisture is removed, adhesion is avoided, and demolding integrity is improved; according to the high-precision detection method for the refining performance of the grain refiner, a traditional conical mold is modified into a common square mold, so that processing is more convenient, meanwhile, errors are reduced, experimental raw materials are saved, and the experimental time is shortened.

The invention belongs to the field of novel light thermal-insulation building materials, and particularly discloses a self-thermal-insulation ceramsite foam concrete block and a production process thereof. A physical foaming technology is adopted, hydrogen peroxide serves as a foaming agent, a large number of closed air holes are generated through mechanical stirring, and the heat conductivity coefficient of the material is reduced by means of the low heat conductivity of air (the lowest heat conductivity coefficient can reach 0.08 W.m <-2 >. K <-1 >). Ceramsite is doped as aggregate, so that the compressive strength of the concrete is enhanced (the highest compressive strength can reach 7.5 MPa) while the thermal insulation performance is improved. Modified materials such as silica fume and polypropylene fibers are added, the pore structure is optimized, the impermeability grade of the concrete reaches P6, and the drying shrinkage rate is smaller than or equal to 0.03%.

The invention relates to a heating device (10), in particular for infrared cabins, saunas, steam baths or the like, and a method for carrying out an infusion with a heating device, in particular for infrared cabins, saunas, steam baths or the like, wherein the heating device has a heating device (11) for emitting heat energy and a storage device (12), wherein the storage device has at least one storage medium (13) for storing heat energy, wherein a liquid for carrying out an infusion can be supplied to the storage device in such a way that the liquid can be applied to the storage medium, wherein the storage medium is made of a metal foam, ceramic foam, sintered metal or a sintered ceramic.

The invention relates to the technical field of microwave sintering, and discloses a modular microwave high-temperature sintering auxiliary heating heat preservation device which is characterized in that a heat preservation box body is made of a polycrystalline mullite fiber material, and an open temperature measuring hole is formed in the heat preservation box body; the heat insulation body is arranged in the heat preservation box body and is made of a ceramic foam material; the first crucible is arranged in the heat insulation body, and the first crucible is made of a boron nitride material; the second crucible is arranged in the first crucible, a gap is formed between the second crucible and the first crucible, the second crucible is made of a silicon carbide material, and a sintering sample is placed in the second crucible; the silicon carbide powder is filled in a gap between the first crucible and the second crucible; the thermal insulation device has the advantages that the thermal insulation effect is good, the cost is low, the service life is long, the interchangeability is high, the operation is convenient, and the threat to the body health of people is hardly caused.

This invention discloses a rotary suspension clamp body aluminum molten casting device and casting process, relating to the field of metal casting technology, including a molten metal heat preservation device, a solution pretreatment mechanism, and a low-pressure casting mechanism. This invention achieves efficient pretreatment of the molten metal by setting a rotating central rod and its auxiliary components inside the solution vessel. Before conveying, the coordinated rotation of the corrugated screen and ceramic foam stack effectively adsorbs and filters oxide slag on the surface of the molten aluminum, ensuring the purity of the molten metal from the source. Simultaneously, the turbulence generated by the stirring plates breaks the static state of the molten metal, promoting the floating and separation of internal inclusions. Subsequently, the inclined blades and spiral guide at the bottom gather the molten metal upwards and towards the center, forming a stable, air-free laminar flow state, reducing the gas content in the molten metal and preventing the re-entry of gas during conveying.

The application provides a high-toughness foam ceramic and a preparation method and use thereof, wherein the raw materials are finely ground and uniformly mixed, then water is added and uniformly mixed to obtain a wet powder, the wet powder is laid into a grinding tool, and coupling sintering of a magnetic field and a temperature field is performed, the raw materials include the following components in parts by weight: steel slag powder 50-70 parts by weight, fly ash 0-20 parts by weight, phosphorus tailings 5-20 parts by weight, red mud 5-20 parts by weight, waste incineration ash 5-20 parts by weight, waste glass powder 5-20 parts by weight, and boron nitride 0.1-0.5 parts by weight.

Porous, electrically conductive ceramic foams incorporating continuous self-assembled graphene networks are described. The disclosed approach uses interfacial trapping to spontaneously exfoliate and assemble pristine graphite, not graphite oxide, in a ceramic sol-gel. The composite foams display electrical conductivity and joule heating, with anticipated applications as, for example, catalyst supports, thermoelectrics, and porous electrodes.

Ceramic foams are provided. The ceramic foams can have a graded pore gradient. The ceramic foams can be silica aerogels. The ceramic foams can be prepared by reacting one or more precursors in the presence of an inert gas produced by a pore-forming gas forming additive. The ceramic foams can be used as insulation materials.

The present invention relates to the technical field of preparing highly flame-retardant foamed silicone strips, and in particular to a method for preparing highly flame-retardant ceramic foamed silicone strips. The method comprises the following steps: positioning and mounting, cutting, outputting waste, coating with glue, and docking. By adjusting the existing method for preparing foamed silicone strips, a method for automatically preparing foamed silicone strips that can replace manual processing is provided, so that after the foamed silicone strips are cut, they can be directly subjected to the gluing, docking, and connection processes without the need for transfer. The entire process is completed automatically without the need for manual operation, and the processing accuracy is higher. In addition, during the cutting process, the foamed silicone strips are wrapped and fixed in all directions by utilizing the cooperation of positioning blocks, positioning grooves, and positioning pressing blocks, so that the originally flexible foamed silicone strips are constrained and will not be dislocated during the cutting process.

The invention relates to the technical field of acrylic plates, and discloses a flame-retardant heat-insulating acrylic plate and a preparation method thereof.The flame-retardant heat-insulating acrylic plate comprises methyl methacrylate, an initiator and a specific composite additive system, and the composite additive system comprises four key functional components, the preparation method comprises the following steps of: taking tri (2-hydroxyethyl) boric acid ester as a precursor of a glass phase network, octa (aminophenyl) polyhedral oligomeric silsesquioxane as a network framework, diethyl diethanol amino methyl phosphonate as a precursor of a catalyst and a foaming agent, and pentaerythritol tetra [beta-(3, 3, 4-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5 The invention relates to 2, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] ester. Through the synergistic effect of the components, a compact ceramic foam thermal insulation layer can be generated in situ during combustion, the unification of excellent flame-retardant thermal insulation property and inherent high optical and mechanical properties of the material is realized, and the problem that comprehensive properties are difficult to consider in a traditional modification technology is solved.

The utility model discloses a heat insulation and sound insulation aluminum alloy bridge-cutoff door and window, which comprises a window outer frame and a window sash, the window sash comprises a window inner frame and hollow glass, the window outer frame and the window inner frame are respectively made of bridge-cutoff aluminum materials, the hollow glass is hollow glass, atomization glass is arranged in the hollow glass, and the window outer frame and the window inner frame are both made of bridge-cutoff aluminum materials. A built-in shutter is further arranged in the hollow glass, the outer window frame and the inner window frame are filled with reinforcing materials respectively, and the reinforcing materials are made of ceramic foam materials. The utility model belongs to the technical field of bridge-cut-off aluminum doors and windows, and particularly relates to a bridge-cut-off aluminum door window which is provided with atomized glass and built-in shutters, so that on one hand, the functionality of a window body is increased, and on the other hand

The present disclosure provides a thermal barrier system for use within a traction battery pack. A thermal barrier system for suppressing thermal energy transfer inside a traction battery pack is provided. An exemplary thermal barrier system may include one or more thermal barrier assemblies disposed between adjacent battery cell packs of a cell stack. Each thermal barrier assembly may include a mica core, a first ceramic foam layer, a second ceramic foam layer, a first glass silicone layer, and a second glass silicone layer. In some embodiments, the thermal barrier system may additionally include one or more cell expansion pad assemblies and / or one or more thermal barriers.

The present application relates to a kind of sintered ceramic and its preparation method.The sintered ceramic includes siliceous solid waste, iron solid waste, aluminum solid waste, magnesium solid waste and fluxing agent, and the mass ratio of the siliceous solid waste, iron solid waste, aluminum solid waste, magnesium solid waste and fluxing agent is 40-50:10-15:20-30:2-12:3-5.The present application proposes to use magnesite tailings to provide magnesium oxide, and by controlling the content of magnesium oxide to regulate the generation of spinel phase at high temperature, so that the ceramic foam has good effect, uniform pore structure, high content of high-strength mineral phase and good grain development, thereby preparing sintered ceramic with excellent mechanical properties, while having low density and low water absorption performance.This method of cooperatively using solid waste to prepare high-strength ceramic not only reduces the cost, but also promotes the efficient utilization of solid waste resources.

A racquet includes a handle; and a frame connected to an end of the handle, the frame defining a rounded interior space, the frame including a negative Poisson's ratio (NPR) foam material, in which the NPR foam material, and in which the frame has a Poisson's ratio of between 0 and −1; and a network of strings stretched across the rounded interior space defined by the frame. A golf tee includes an elongated stem; and a head disposed at an end of the elongated stem and shaped to receive a golf ball; in which at least a portion of the golf tee is formed of a negative Poisson's ratio (NPR) foam material, in which the portion of the golf tee has a Poisson's ratio of between 0 and −1, and in which the NPR foam material includes an NPR metal foam, an NPR ceramic foam, or an NPR-PPR composite foam.

An air purifier for use in refrigerators contains in the path for the flow of air through the purifier: a photocatalyst wherein a layer based on tungsten oxide (WO3) is applied on a ceramic foam support. The layer may also contain tin oxide and silver oxide, as well as platinum. The oxide layer may be applied by immersion without the application of a primer. A method for increasing the shelf life of fruits, in particular also of strawberries, salad and vegetables in a refrigerator and a related refrigerator are also described. The purifier is characterized by low energy consumption, thanks to the use of white light to activate the photocatalyst, as well as little toxic impact.

The invention discloses a preparation process of a ceramic foamed silica gel material, and the ceramic foamed silica gel material is prepared by mixing a gel A and a gel B. The main materials of the ceramic foamed silica gel material comprise vinyl silicone oil, hydrogen-containing silicone oil, a ceramic light material, white carbon black and methyl vinyl cyclotetrasiloxane. According to the ceramic foamed silica gel material, nano calcium carbonate is utilized to guide sodium alcohol ether sulphate and sodium bicarbonate to foam, vegetable oleic acid and phosphite ester are utilized to modify the properties of the ceramic light material, and the obtained light material is moderate in pore size, good in uniformity, thin in wall, good in compression strength, low in heat conductivity and good in heat insulation effect; the fireproof performance and the high-temperature stability are realized. The tensile strength and elongation at break of the foamed silica gel material prepared from the modified novel material are obviously improved, and the foamed silica gel material is relatively simple to prepare and has very important significance and wide prospects.

A method for forming a ceramic sandwich-structured composite component includes applying one or more ceramic matrix composite (CMC) plies to a surface of a tool, and positioning a ceramic foam precursor with respect to the tool such that the ceramic foam precursor and the one or more CMC plies is disposed in a sealed interior cavity of the tool. The ceramic foam precursor and the one or more CMC plies are cured within the sealed interior cavity to form a green preform such that the ceramic foam precursor expands within the sealed interior cavity to apply a pressure to the one or more CMC plies to consolidate the one or more CMC plies. The expanded ceramic foam precursor forms a ceramic core of the green preform bonded to the one or more CMC plies. The green preform is removed from the tool and sintered to ceramify the green preform.

The present application belongs to the field of ceramic materials, and particularly relates to a kind of foamed ceramic foamed by boron carbide and a preparation method thereof, wherein the foamed ceramic takes quartz sand as a main body material, takes sodium carbonate as a fluxing agent, takes periclase and albite or potassium feldspar as a viscosity regulator, takes iron oxide as an oxidizing agent, and takes boron carbide as a foaming agent; the sintering temperature is 810-890 DEG C; and the sintering time is 35-65 min. The present application also discloses a preparation method of the above-mentioned foamed ceramic, which has the remarkable advantage of low sintering temperature and far lower manufacturing cost than the prior art. The foamed ceramic prepared by the present application has high total porosity, closed porosity and compressive strength, and has excellent heat preservation, sound insulation, waterproof and moisture-proof performance due to the fact that the pores in the foamed ceramic are independent and not connected with each other.

The application relates to the technical field of foam ceramics, in particular to a zirconium-based foam ceramic filter and a preparation method thereof, which comprises the following steps: S1, ceramic aggregate is crushed, dried, mixed with a dispersing agent and deionized water, ball milled, and then functional additives are added and ball milled to obtain ceramic slurry, wherein the ceramic aggregate comprises zirconium oxide, zirconium silicate and aluminum oxide, and the ceramic aggregate comprises 40-60% zirconium silicate, 20-35% zirconium oxide and the balance of aluminum oxide in percentage by mass; S2, a polyurethane foam template is immersed in the ceramic slurry, and the polyurethane foam template is dried in sections to obtain a green body; and S3, the green body is subjected to temperature sintering under gas protection to obtain the zirconium-based foam ceramic filter, through replacement of part of the zirconium oxide by zirconium silicate, through utilization of the SiO2 and ZrO2 contained in the zirconium silicate to form a synergistic phase system, through cooperation of the coke discharging and sectional sintering processes, through avoidance of cracking caused by phase change stress and impurity phases, through stabilization and controllability of a phase structure, and through enhancement of mechanical properties.

The application belongs to the field of light thermal insulation new building materials, and particularly discloses a self-thermal-insulation ceramsite foam concrete block and a production process. ‑2 ·K ‑1 The physical foaming technology is adopted, hydrogen peroxide is used as a foaming agent, a large number of closed pores are generated through mechanical stirring, the low thermal conductivity of air is used to reduce the thermal conductivity of the material (the lowest can reach 0.08 W·m ‑2 ·K ‑1 ). The ceramsite is mixed as an aggregate, the thermal insulation performance is improved, and the compressive strength of the concrete is enhanced (the highest can reach 7.5 MPa). The modified materials such as silica fume and polypropylene fiber are added, the pore structure is optimized, the impermeability grade of the concrete reaches P6, and the drying shrinkage rate is less than or equal to 0.03%.

The application discloses a kind of evaluation methods of regenerating aircraft aluminum melt cleanliness, belong to the field of secondary metals.The method is after regenerating aircraft aluminum melt is gas removed and impurity by Spinning Nozzle Inert Gas Floatation (SNIF), filtered by Ceramic Foam Filter (CFF), evaluate regenerating aircraft aluminum melt cleanliness Q.Melt cleanliness detection includes: Liquid Metal Cleanliness Analyzer (LIMCA) detects the number of inclusion particle size ≥20 μm and ≥40 μm, respectively, N 20 And N 40 (Individual / kgAl);Porous Disc Filtration Analysis (PoDFA) detects inclusion area P S (mm 2 / kgAl) of particle size ≥1 μm;Alscan detects hydrogen content H A (ml / 100gAl);Regulate regenerating aircraft aluminum melt cleanliness Q as dimensionless value.The application objectively and comprehensively evaluates the cleanliness of regenerating aircraft aluminum melt, with the characteristics of simple evaluation steps, easy to obtain evaluation parameters, high accuracy and wide application range.

Thermal barrier systems are provided to prevent the transfer of heat energy within a traction battery pack. An exemplary thermal barrier system may include one or more thermal barrier assemblies positioned between adjacent battery cell groups in a cell stack. Each thermal barrier assembly may include a mica core, a first ceramic foam layer, a second ceramic foam layer, a first glass-silicone layer, and a second glass-silicone layer. In some implementations, the thermal barrier system may additionally include one or more cell expansion pad assemblies and / or one or more thermal barriers.