479 results about "Glass microsphere" patented technology

The invention discloses a composition based on hollow glass beads and a preparation method thereof, and relates to the technical field of material science. The preparation method comprises the following steps: firstly, constructing a pre-composite functional microsphere with a specific hierarchical structure as a core basic functional unit, then matching with a plurality of components such as a thermosetting resin matrix, a latent curing system, a functional synergistic aid package and a composite solvent system, and matching with a preparation process which has a synergistic effect with the components. The composition based on the hollow glass beads is expected to realize uniform dispersion of the hollow glass beads in a coating system and strong bonding of a microscopic interface on the premise of ensuring the structural integrity of the hollow glass beads. Therefore, the high-performance composite coating material with ultra-light weight, high heat insulation efficiency, excellent mechanical strength and long-term service stability is obtained.

The invention discloses a passive radiation refrigeration coating and a preparation method thereof, and relates to the technical field of industrial coatings. Comprising a fluoroacrylate emulsion, hollow glass beads, nano titanium dioxide, flaky silicon dioxide aerogel powder, polytetrafluoroethylene micro powder, hydroxyl-terminated polydimethylsiloxane, a hydroxyl acrylic acid modified silane coupling agent, a super-hydrophobic modified fluorosilicone surface additive, nano cerium oxide, aluminum fluoride doped zinc oxide infrared enhancement powder and deionized water. The paint is prepared on the basis of the formula. According to the invention, a multi-scale spectrum regulation and control and surface self-cleaning system is constructed cooperatively, so that the synergistic effect of high reflection of a sunlight region and high emission of a middle infrared region is realized. The coating can maintain continuous passive refrigeration in a day and night period, the surface of the coating has self-cleaning capability and excellent ultraviolet aging resistance, and high reflectivity and high radiation emissivity can be maintained for a long time in a complex outdoor environment, so that the thermal management efficiency of buildings and equipment is remarkably improved.

The invention discloses a quick response flexible temperature sensor with low thermal crosstalk and a preparation method thereof. The sensor comprises a contact layer, a sensing layer, an electrode layer and a substrate layer, wherein the contact layer comprises a heat conduction layer and a heat insulation network; the heat-conducting layer is made of a heat-conducting composite material and comprises polydimethylsiloxane and flake carbon powder; the heat insulation network and the substrate layer are made of a heat insulation composite material which comprises polydimethylsiloxane and hollow glass microspheres; the sensing layer comprises a plurality of sensing units arranged in an array, the sensing units are connected with the electrode layer and output resistance signals, the heat conduction layer and the substrate layer are arranged over and under the sensing units respectively, and the heat conduction and heat insulation synergistic structure can enhance the quick response of the sensing units to the temperature; a thermal insulation network is embedded in the contact layer to block thermal crosstalk between adjacent sensing units. The temperature sensor has the advantages of quick response, low thermal crosstalk and high reliability in a wide range, and large-scale production and preparation can be realized.

The invention provides a holmium and ytterbium co-doped mid-infrared microsphere Raman laser and a preparation method thereof, and relates to the technical field of laser preparation, the holmium and ytterbium co-doped mid-infrared microsphere Raman laser comprises an infrared transmission optical fiber, a pump light source, holmium and ytterbium co-doped tellurate glass microspheres and passive tellurate glass microspheres, pump light emitted by the pump light source is guided to a conical region through the infrared transmission optical fiber, and the holmium and ytterbium co-doped tellurate glass microspheres and the passive tellurate glass microspheres are arranged in the conical region; sequentially carrying out optical coupling with holmium and ytterbium co-doped tellurate glass microspheres and passive tellurate glass microspheres; in the holmium and ytterbium co-doped tellurate glass microspheres, the doping amount of the holmium element is 0.3%, and the doping amount of the ytterbium element is 0.45% according to the mass percentage. Compared with the prior art, through the cascade structure of the holmium-ytterbium co-doped microspheres and the passive microspheres, three-step wavelength conversion of pump light-rare earth ion lasing-Raman frequency shift is realized in a single system for the first time, and the wavelength limitation that a traditional single microsphere depends on a rare earth ion fixed energy level is broken through.

The invention relates to the technical field of UV coatings, in particular to a waterproof wear-resistant UV coating for a floor and a preparation method of the waterproof wear-resistant UV coating. The waterproof and wear-resistant UV coating for the floor is prepared from the following raw materials in parts by mass: 30 to 60 parts of polyurethane acrylate, 20 to 40 parts of fluorinated epoxy acrylate oligomer, 20 to 40 parts of pentaerythritol tetraacrylate, 1 to 5 parts of tetraethoxysilane, 15 to 25 parts of hollow glass beads, 1 to 3 parts of ammonia water, 1 to 2 parts of trifluoropropane trimethoxysilane and 1 to 2 parts of amino-terminated polyamidoamine. The coating is prepared from 1-3 parts of graphene oxide, 1-2 parts of a photoinitiator, 1-2 parts of polytetrafluoroethylene wax, 0.5-1.5 parts of a dispersing agent, 1-2 parts of a flatting agent and 1-2 parts of a defoaming agent. The waterproof coating is excellent in waterproof effect, high in adhesive strength and excellent in dimensional stability; when the coating is subjected to mechanical actions such as friction and impact, the surface of a coated object is comprehensively protected, the wear rate is remarkably reduced, and the wear resistance is improved.

The invention discloses a water-based single-component super-amphiphobic refrigeration coating, a coating and a preparation method of the coating, and relates to the technical field of coatings. 20-35 parts of a second filler; 5-10 parts of a third filler; 20-35 parts of a film-forming substance, 1-9 parts of an auxiliary agent and 3-50 parts of water; the first filler comprises fluorine-containing silane modified fumed silica; the second filler comprises at least one of long-chain silane modified precipitated barium sulfate, long-chain silane modified calcium carbonate and long-chain silane modified hollow glass beads; the third filler comprises an infrared emission filler treated by an organic silicon modifier. By modifying the filler, the purposes of stable dispersion and functional synergy of low-surface-energy substances and high-proportion inorganic nano filler in a water-based system are achieved.

The invention discloses a dual-wavelength microsphere laser based on tri-doped rare earth ions and a preparation method thereof, the dual-wavelength microsphere laser based on tri-doped rare earth ions comprises a silica fiber, the middle part of the silica fiber is provided with a conical region; the pump light source is arranged at one end of the silica fiber; the erbium, holmium and ytterbium tri-doped tellurate glass microspheres are arranged in the conical region; pump light emitted by the pump light source is guided to the conical region through the single-mode optical fiber and is optically coupled with the erbium-holmium-ytterbium tri-doped tellurate glass microsphere; in the erbium-holmium-ytterbium triple-doped tellurate glass microspheres, infrared-transmitting tellurate glass is used as a matrix, and the doping amount of an erbium element is 0.11%, the doping amount of a holmium element is 0.22%, and the doping amount of an ytterbium element is 0.80% in percentage by mass. According to the dual-wavelength microsphere laser based on the three-doped rare earth ions, efficient and stable dual-wavelength laser output is achieved.

The invention provides a low-density high-strength aluminum-based composite material and a preparation method, and relates to the technical field of aluminum alloy powder metallurgy preparation. The composite material is composed of two parts: a matrix alloy and hollow glass beads, wherein the addition amount of the hollow glass beads is 5-30 wt.%. The matrix alloy comprises the following components in percentage by mass: 0 to 6.0 percent of Cu, 0 to 3.0 percent of Mg, 0 to 8.4 percent of Zn and the balance of Al and inevitable impurities; the hollow glass beads are prepared from the following components in percentage by mass: 70 to 80 percent of SiO2, 8 to 15 percent of CaO, 5 to 15 percent of Na2O, 3 to 8 percent of B2O3 and 2 to 3 percent of Al2O3. The composite material is prepared through surface modification of hollow glass beads, preparation of composite powder, preparation of a composite material green body, sintering densification, deformation processing and heat treatment. According to the technology, low-cost preparation and processing of the low-density and high-strength aluminum-based composite material can be achieved, the technological process is simple, the production efficiency is high, the method is suitable for large-scale industrial production, and the application prospects in the fields of aerospace, new energy automobiles, ships, electronic communication and the like are huge.

The invention relates to hollow glass microsphere modified expanded graphite anti-settling polyurethane and a preparation method thereof.The hollow glass microsphere modified expanded graphite anti-settling polyurethane is composed of a polyurethane prepolymer, expanded graphite, hollow glass microspheres, a silane coupling agent, a catalyst, a foaming agent and a stabilizer, the expanded graphite and the hollow glass microspheres are mixed in proportion, an ethanol solution of the silane coupling agent is added, stirring is conducted, and the hollow glass microsphere modified expanded graphite anti-settling polyurethane is obtained. Performing ultrasonic treatment and drying to obtain modified composite filler; the preparation method comprises the following steps: mixing polyether polyol and polyisocyanate for reaction to prepare a polyurethane prepolymer; and adding the modified composite filler into the prepolymer, and sequentially adding the catalyst, the foaming agent and the stabilizer. Through composite modification of the hollow glass microspheres and the expanded graphite, the low density of the hollow glass microspheres and the high specific surface area of the expanded graphite are utilized, a stable three-dimensional network structure is formed, filler sedimentation is effectively prevented, the sedimentation rate is smaller than 5% and is far superior to that of a traditional polyurethane composite material, and long-term stability of material performance is ensured; the characteristics of light weight, high strength, heat insulation and settlement prevention are realized.

The invention discloses a high-wear-resistance antiskid road marking coating and a preparation method thereof, and belongs to the technical field of road marking coatings. The coating comprises the following components in parts by weight: 15-25 parts of petroleum resin, 2-5 parts of a plasticizer, 30-40 parts of a composite wear-resistant aggregate, 15-25 parts of a composite antiskid aggregate, 5-10 parts of titanium dioxide, 0.5-2 parts of a silane coupling agent, 0.5-1.5 parts of polyethylene wax, 5-10 parts of glass beads, 0.1-0.3 part of an antioxidant 1010 and 10-20 parts of a filler. Through the synergistic effect of two types of specific aggregates, a hard-supporting and elastic-buffering wear-resistant matrix and a lasting multi-stage anti-skid surface are constructed in the coating, and the technical problems that a traditional marking coating is poor in wear resistance, insufficient in anti-skid performance and short in reflective life are solved; the obtained coating has the characteristics of ultrahigh wear resistance, lasting high skid resistance, strong adhesive force and slow reflection performance attenuation.

The invention relates to the technical field of medical cosmetology, in particular to a porous hollow glass bead capable of slowly releasing collagen and application of the porous hollow glass bead. The porous hollow glass bead capable of slowly releasing the collagen comprises a porous hollow glass bead body, the outer wall of the porous hollow glass bead body is provided with a pore channel structure penetrating through the exterior and an inner cavity of the hollow glass bead body, and the pore channel and the inner cavity of the porous hollow glass bead body are filled with collagen gel. The compressive strength of the hollow glass beads is utilized to improve the mechanical supporting effect, the collagen gel is subjected to catalytic decomposition under the action of collagenase in a body so as to achieve the slow-release effect, the outer walls of the hollow glass beads slow down the reaction time through physical isolation, and then the slow-release time is prolonged; meanwhile, ions such as Si and Ca released by the hollow glass beads can promote cells to secrete collagen, the biological activity is improved, and the three beneficial effects of physical support, collagen slow release and biological safety are achieved.

The invention relates to the field of special polymer materials, in particular to polyimide foam with low thermal conductivity and high flame retardance and a preparation method thereof. According to the invention, hollow glass microspheres (HGM) are used as a carrier, and a novel three-stage coating structure of an inner layer (heat absorption dehydration), a middle layer (catalytic carbon formation) and an outer layer (smoke suppression hydrophobic) is constructed outside the hollow glass microspheres (HGM). The preparation method comprises the following steps: dispersing three-layer coated HGM (15-35%) in a foaming black material, mixing with a foaming white material to react to generate a foam intermediate, and carrying out gradient heating curing molding to obtain the foam with the density of 18-30kg / m < 3 >, the heat conductivity coefficient of less than or equal to 0.035 W / (m.K), the limit oxygen index of more than or equal to 41.5% and the smoke density Ds of less than 100. The problem that a traditional filler cannot consider low density, low heat conductivity, high flame retardance and processing compatibility at the same time is solved, and the filler is suitable for fire prevention and heat insulation of a spacecraft thermal protection layer and a new energy battery pack.

The invention discloses a flue gas waste heat recovery device and method for a glass bead smelting furnace, and relates to the technical field of flue gas heat recovery. The glass bead smelting furnace flue gas waste heat recovery device comprises a rack, a filtering mechanism and a heat exchange mechanism, the filtering mechanism and the heat exchange mechanism are fixedly connected to the top of the rack, the filtering mechanism filters glass bead smelting furnace flue gas and then discharges the glass bead smelting furnace flue gas into the heat exchange mechanism for heat exchange and energy storage, and the filtering mechanism and the heat exchange mechanism both have a self-cleaning function; smoke can be filtered and heat can be recovered in sequence, an airflow channel forms a loop, after heat is released in the heat exchange mechanism, the heat can be discharged back to the filtering mechanism, a filtering disc in the filtering mechanism is separated into a left part and a right part, when initial smoke is filtered in the left half part of the filtering disc, impurities are attached to the bottom of the filtering disc, and the smoke is filtered in the left half part of the filtering disc. And the backflow flue gas can be used for blowing the filter disc from top to bottom, so that impurities attached to the bottom of the filter disc can fall into water on the lower layer, and the two sides can be cleaned in sequence.

The invention discloses a lightweight impact-resistant PC / ABS and application thereof in a robot shell, and belongs to the technical field of plastic alloys, the lightweight impact-resistant PC / ABS provided by the invention comprises the following components in parts by weight: 70-90 parts of polycarbonate, 10-30 parts of ABS, 10-20 parts of PMMA, 8-10 parts of a toughening compatibilizer, 8-10 parts of modified hollow glass beads, 5-15 parts of a flame retardant, 1-3 parts of a lubricant and 0.1-2 parts of an antioxidant; according to the lightweight impact-resistant PC / ABS provided by the invention, the modified hollow glass beads and the toughening compatibilizer are added, so that the density of the PC / ABS is reduced, the impact resistance of the PC / ABS is improved, the impact resistance of the PC / ABS is improved, the impact resistance of the PC / ABS is improved, the impact resistance of the PC / ABS is improved, and the impact resistance of the PC / ABS is improved. The material is especially suitable for robot shell materials.

The invention provides a bio-based low-temperature curing powder coating and a preparation method thereof, and belongs to the technical field of powder coatings, and the bio-based low-temperature curing powder coating specifically comprises the following components in parts by weight: 65-75 parts of bio-based resin, 5-6 parts of triglycidyl isocyanurate, 0.05-0.15 part of tetrabutylammonium bromide, 8-12 parts of air glass beads, 4-6 parts of mica and 0.4-0.6 part of ethylene bis stearamide. 0.7 to 1.3 parts of flatting agent, 0.2 to 0.5 part of benzoin, 0.3 to 0.7 part of amide wax and 6 to 8 parts of pigment. The curing temperature of the bio-based low-temperature curing powder coating is 100-120 DEG C, and the bio-based low-temperature curing powder coating has the advantage of low curing temperature, can be suitable for surface coating of plastic devices, has the advantages of salt mist resistance, impact resistance and the like, and can effectively solve the problems of existing powder coatings.

The present application relates to thermal insulation coating technical field, specifically to a kind of low VOCs ultraviolet resistant thermal insulation coating composition and its performance testing device, consisting of the following mass parts components: water-based acrylic resin 30-45 parts, nitrogen-doped graphene 1-3 parts, nano composite powder 2-5 parts, low water absorption and expansion glass microsphere 8-12 parts, silane coupling agent modified sepiolite 5-10 parts, silane coupling agent KH560 0.5-1.5 parts, ultraviolet absorber UV-9 0.3-0.8 parts, hydroxyethyl cellulose thickening agent 0.2-0.5 parts;Composition meets the following conditions: (1) VOCs content≤50g / L;(2) ultraviolet absorption rate≥95%;The present application realizes the purpose that VOCs content is far lower than traditional solvent type coating through the synergistic effect of water-based acrylic resin system and low water absorption and expansion glass microsphere, while nitrogen-doped graphene and nano ITO-SiO2 Composite powder form ultraviolet-infrared dual-effect shielding layer, ultraviolet absorption rate, infrared reflectivity greatly improve, solve the problem that traditional anti-UV coating function is single, VOCs is overproof.

The invention relates to the technical field of functional coatings, and discloses a preparation method of a composite aerogel thermal insulation coating, which comprises the following steps: controlling the solubility parameter difference between film-forming resin and a first solvent, and curling and shrinking a resin molecular chain to form a swelling gel group in a non-dissolved state; performing dry powder grading on the hydrophobic silicon dioxide aerogel powder and the high-strength hollow glass beads; under the conditions of low temperature and high viscosity, shearing and kneading the swelled gel group, a silane coupling agent and the mixed powder, and carrying mechanical stress and completing interface chemical anchoring by using glass beads; and finally, dropwise adding a good solvent in a gradient manner to induce controlled unwrapping of the resin. According to the invention, the size exclusion effect is utilized to prevent the resin from immersing into aerogel nanopores, and the aerogel skeleton is prevented from being broken through the mechanical support of the microbeads, so that the problems of pore filling and skeleton collapse in the coating preparation process are solved, and the obtained coating has excellent heat insulation performance and mechanical strength.

The invention discloses an explosion-proof coating as well as a preparation method and application thereof. The raw materials of the coating comprise a component A and a component B, and the mass ratio of the component A to the component B is (100: 100)-(100: 50); wherein the component A is prepared from the following components in parts by weight: 70 to 90 parts of epoxy resin, 3 to 8 parts of reactive diluent, 2 to 6 parts of silane coupling agent and 0.5 to 3 parts of fumed silica; and the component B comprises the following components in parts by weight: 30-60 parts of a nano reinforced curing agent, 5-30 parts of aluminum hydroxide, 8-15 parts of ammonium polyphosphate, 3-10 parts of expanded graphite, 3-8 parts of zinc phosphate, 3-12 parts of hollow glass beads, 3-15 parts of hexagonal boron nitride, 3-10 parts of silicon carbide whiskers, 2-5 parts of graphene dispersion liquid, 5-10 parts of a solvent, 0.2-1.5 parts of a dispersing agent and 0.1-1 part of a defoaming agent. The coating disclosed by the invention has the functions of toughening, flame retardance, heat conduction and non-combustible gas release, and can be applied to flame-retardant and explosion-proof products.

The invention provides a powder coating gypsum board with scratch resistance and a preparation method thereof, and belongs to the technical field of paints.The preparation method comprises the following steps that modified polyester, modified glass beads, polytetrafluoroethylene, barium sulfate, titanium dioxide, a flatting agent and a curing agent are mixed and stirred, melt extrusion is conducted, tabletting is conducted after cooling, smashing, grinding and sieving are conducted, and the powder coating gypsum board is obtained. Powder coating is obtained; and sanding and dedusting the surface of the gypsum board substrate, electrostatically spraying the powder coating onto the surface of the substrate, heating, curing and cooling to obtain the gypsum board. Wherein the modified polyester is prepared from polyester, a reinforcing agent and 3-glycidyl ether oxypropyl triethoxy silane. The powder coating gypsum board prepared by the invention has excellent scratch resistance, impact resistance and wear resistance.

The invention discloses a surface coating method for realizing thrust amplification of a sail, which is characterized in that a sail blade which takes a glass fiber composite material as a basic material comprises a step of anti-drag coating of a convex surface part of the sail blade, a step of anti-drag coating of a concave surface of the sail blade, a step of special coating of a sail blade end plate and a step of special coating of a sail blade guide device. A low-friction and high-wear-resistance coating which takes modified PTFE resin as a base material and contains nano aluminum oxide and graphite micro powder is adopted for the convex surface; and the concave surface adopts a vortex breaking-strong adhesion type coating which takes fluorocarbon resin (PVDF) as a base material and contains nano silicon dioxide and hollow glass beads. According to the invention, the thrust efficiency is improved by 60-80%; the thrust stability under the wide wind speed is improved by more than 60%, the service life of the sail blades can be prolonged, the operation and maintenance cost is reduced, an existing sail can be directly transformed, and the sail has the advantages of being low in cost and high in efficiency and has economic and environment-friendly values.

The invention discloses a low-dielectric insulation fixing adhesive and a preparation method thereof, and belongs to the technical field of fixing adhesives. The raw materials comprise, by weight, 25-40 parts of an epoxy resin matrix, 5-10 parts of a modified silane coupling agent, 15-30 parts of a low dielectric filler, 8-15 parts of a curing agent, 3-8 parts of a toughening agent, 2-5 parts of a diluent, and 0.5-2 parts of an antioxidant; the low dielectric filler is a composite filler of hollow glass beads and boron nitride, the mass ratio of the hollow glass beads to the boron nitride is (2-3): 1, and the modified silane coupling agent is a gamma-aminopropyltriethoxysilane grafted maleic anhydride modified product; according to the invention, the dielectric constant and the dielectric loss of the adhesive can be reduced, and the insulating property, the bonding strength and the compatibility with a base material can be improved at the same time.

This invention belongs to the field of glass microsphere preparation technology, and provides a release agent for fire polishing of white glass microspheres used in the vitrification of radioactive nuclear waste, and its preparation method. The release agent comprises the following components by mass fraction: 10-70% alumina powder, 20-90% quartz sand, 1-3% cerium oxide powder, and 1-6% white flour. By introducing white flour, the release agent of this invention can both protect the color of the white beads themselves and prevent the formation of twins or triplets during the fire polishing process. It also prevents the introduction of major chemical elements into the surface of the glass beads during the release process, thus increasing the compositional stability of the glass beads.

This application discloses a curing agent for fluidized solidified soil and its preparation method. The curing agent comprises the following raw materials by weight: 30-45 parts of sulfoaluminate cement, 15-30 parts of gypsum, 10-15 parts of steel slag, 15-25 parts of mineral powder, 3-4.5 parts of carboxymethyl cellulose, 10-15 parts of attapulgite, 5-10 parts of sodium sulfate, 5-10 parts of silane coupling agent modified glass microspheres, and 60-80 parts of water. The curing agent for fluidized solidified soil provided in this application can improve the compressive strength and stability of the solidified soil.

The invention discloses a visual efficient chloride ion removal adsorbing material and a preparation method and application thereof.The adsorbing material is prepared by the steps that hollow glass microspheres serve as a carrier, and hollow glass porous particles are synthesized from a mixture of hollow glass microsphere powder and a pore forming agent through a sol-gel method; the preparation method comprises the following steps: modifying the surface of a porous adsorption material through a low-temperature plasma bombardment technology to enhance the adsorption performance on chloride ions, and loading magnetic iron oxide nanoparticles on the porous adsorption material to prepare the chloride ion adsorption material; the adsorption material has the characteristic of environmental friendliness, not only can efficiently adsorb chloride ions in a water body, but also can realize the visualization of the adsorption process through the density difference before and after adsorption, has the characteristics of repeated use and easiness in regeneration, and has relatively high market application prospect and economic value.

This application discloses a low-density, flowable flame-retardant sealant and its preparation method. The sealant comprises the following raw materials in parts by weight: base adhesive: 100 parts; polydimethylsiloxane: 5-30 parts; flame retardant: 50-120 parts; crosslinking agent: 3-7 parts; coupling agent: 0.5-1 part; curing agent: 2-5 parts. The flame retardant is a flame retardant powder, liquid flame retardant, and hollow glass microspheres in a mass ratio of 20-60:10-20:20-40. The sealant of this application possesses excellent flame retardant properties, flowability, and low density, making it suitable for manufacturing in the electric vehicle field.

The invention discloses a temperature-resistant heat-insulation sealing metal-rubber composite material which comprises a metal phase, a rubber phase and a binder, the preparation method of the temperature-resistant heat-insulation sealing metal rubber composite material comprises the following steps: step 1, sintering and molding metal fibers to obtain a three-dimensional porous metal framework; 2, fluororubber and silicone rubber are added into an internal mixer to be blended, then hollow glass beads and carbon black are sequentially added, the mixture is mixed to be uniform, and rubber mixed rubber is prepared; 3, the surface of the metal framework is coated with a binding agent, the binding agent is covered with the rubber compound, and the whole material is placed in a vulcanizing machine to be vulcanized; and 4, integrally transferring the vulcanized material into a drying oven for secondary vulcanization, and cooling to obtain a composite material finished product. The composite material is applied to the field of space flight and aviation. The invention aims to solve the problems of narrow temperature resistance range, non-ideal heat insulation effect and obvious reduction of high-temperature mechanical properties of the existing material, so as to meet the use requirements of aerospace equipment in a complex thermal coupling environment.

This invention discloses a highly collapsible ceramic core with a dense outer surface and a porous core, and its preparation method. The ceramic core is composed of a porous core ceramic core and a densified inert coating on its outer surface. The porous core ceramic core comprises 42-51 wt% ceramic powder, 35-40 wt% hollow glass microspheres, 4-9 wt% fiber, 3-7 wt% graphite, and 2-8 wt% starch. The densified inert coating comprises 67-75 wt% sol and 25-33 wt% nanoparticles. The preparation method includes the following steps: preparing a porous core ceramic core and a densified inert coating slurry; impregnating the porous core ceramic core with the densified inert coating slurry under segmented vacuum pressure using a gradient pressure reduction method; and then sintering it in a heat treatment furnace. The ceramic core prepared by this invention exhibits excellent collapsibility, which can solve the problem of blade thermal cracking. The inert coating avoids interfacial reactions, and the porous core structure facilitates efficient core removal.

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.

The invention belongs to the technical field of polymer composite materials, and particularly relates to a latent curing epoxy resin based sound absorption and insulation composite material and application thereof. The composite material is prepared from bisphenol A type epoxy resin, a latent curing agent, a latent accelerant, a triethylene tetramine functionalized three-dimensional microporous metal organic framework material containing europium-cobalt bimetallic clusters, a lauryl sodium sulfate intercalated zinc-aluminum layered bimetal hydroxide halloysite nanotube hybrid body, hollow glass beads, fumed silica, a coupling agent, a coupling agent and a coupling agent. A silane coupling agent and acetone. The preparation method comprises the following steps: dissolving the epoxy resin in acetone, adding the silane coupling agent and water, stirring, heating, adding the functionalized metal organic framework material and the hybrid, carrying out vacuum concentration and ultrasonic dispersion, adding the hollow glass beads and the fumed silica, finally adding the curing agent and the accelerant, and carrying out vacuum defoaming and segmented heating curing molding. The material has excellent sound absorption and sound insulation performance.

This invention relates to the field of power cable technology and discloses a wear-resistant modified PE sheathed power cable with a braided reinforcement layer. From the inside out, the invention comprises a conductor, an insulation layer, a filler layer, a metal shielding layer, an inner sheath layer, a buffer layer, an armor layer, a double-gradient braided layer, and an outer sheath layer. The buffer layer is filled with nano-magnesium hydroxide particles and hollow glass microspheres to enhance buffering energy absorption and flame retardant performance, resisting external impacts and fire risks. The double-gradient braided layer uses a blended fiber design to enhance tensile strength and dynamic friction reduction, adapting to dragging and stretching conditions. The outer sheath layer, with its helical interlocking structure and graphene molybdenum disulfide modified ridge surface, enhances wear resistance and load-bearing capacity, resisting wear in complex environments. The synergistic effect of each functional layer comprehensively improves the overall performance of the cable.