199 results about "Core shell" patented technology

The invention relates to the technical field of preparation of a ceramic silica gel composite belt for a power battery of a new energy automobile, in particular to a super-high-temperature-resistant and impact-resistant ceramic silica gel composite belt for an automobile and a preparation method of the super-high-temperature-resistant and impact-resistant ceramic silica gel composite belt. The phase change toughening effect of the core-shell structure filler is generally utilized to generate pressure stress, inhibit crack propagation and improve fracture toughness through volume change during phase change, meanwhile, the core-shell structure filler is subjected to thermal expansion coefficient gradient structure design, interface stress in the core-shell structure filler at high temperature is relieved, thermal stress concentration is avoided, thermal shock resistance is improved, and the service life of the core-shell structure filler is prolonged. And the ceramic layer is prevented from cracking, so that the ceramic layer has good high-temperature resistance and flame retardance, flame spreading can be effectively prevented, and thermal runaway of the power battery is prevented.

The invention relates to the field of building material preparation, in particular to a high-strength concrete material and a preparation method thereof.According to the high-strength concrete material, through the synergistic effect of core-shell type temperature-sensitive resin particles, a pH response type expanding agent and industrial solid waste composite micro powder, multi-environment self-adaptive crack resistance and mechanical property breakthrough are achieved. The core component is prepared from 180 to 240 parts of cement, industrial solid waste composite micro powder (30 to 50 parts of fly ash-based nano SiO2 and 50 to 70 parts of steel slag micro powder), 10 to 15 parts of core-shell resin particles and 8 to 12 parts of pH response type expanding agent. According to the preparation process, multi-section intelligent stirring (ultra-high-speed shearing and dispersing of the nanometer material) and dynamic maintenance of the internet of things are adopted, the hydration process is precisely regulated and controlled, and the finally prepared material has excellent compressive strength and anti-cracking performance. The method is suitable for severe scenes such as ocean engineering and plateau buildings, and has wide application prospects.

The embodiment of the invention provides a composite phase change heat storage material and a preparation method, the composite phase change heat storage material is a microcapsule with a core-shell structure, the core is a metal iron microsphere, and the metal iron microsphere is used for storing heat through phase change in the heat storage and release process of an energy storage system; the shell is a metal oxide with high-temperature stability and a high heat conductivity coefficient, and the shell is used for packaging the metal iron microspheres and serving as a heat-conducting medium in the heat storage and release process of the energy storage system. According to the embodiment of the invention, the composite phase-change heat storage material has extremely high phase-change temperature and relatively large energy storage density, the phase-change material is not easy to leak after phase change through a packaging technology, and the service life of an energy storage system can be prolonged by adopting the composite phase-change heat storage material.

The invention relates to the technical field of building materials, in particular to light water-resistant phosphogypsum-based cement concrete mortar and a preparation process thereof. The phosphogypsum-based cement concrete mortar comprises the following components: activated phosphogypsum, sulphoaluminate cement, magnesium phosphate cement, modified zeolite powder, lightweight aggregate, modified nano silicon dioxide, a core-shell toughening agent, a polycarboxylate superplasticizer and water, and the preparation method comprises the following steps: respectively preparing the activated phosphogypsum, the modified zeolite powder, the modified nano silicon dioxide and the core-shell toughening agent; the water resistance of the ardealite is improved through activating treatment, the interface bonding force and the structural compactness are enhanced through multi-component synergism by means of selective adsorption of the modified zeolite powder, the mechanical property of the lightweight aggregate is optimized, the toughness is improved through the core-shell toughening agent, and lightweight, high water resistance, stable performance and durability improvement of the mortar are achieved; the requirements of complex building scenes are met, and environment-friendly and practical values are achieved.

The invention discloses high-strength flow-state solidified soil and a preparation method thereof, and relates to the field of building materials. Preparing core-shell modified polypropylamide and a composite curing agent, and pretreating the inorganic construction waste, the engineering spoil and the carbon material; adding the inorganic construction waste aggregate, the tailing slag, the sisal fibers and the basalt fibers into a stirrer, and stirring; adding the engineering spoil, the cement and the carbon material into the stirrer and stirring; pouring the water reducing agent solution into the stirrer in batches, and stirring; adding a composite curing agent into the stirrer, and stirring to obtain high-strength flow-state solidified soil slurry; and filling the obtained high-strength flow-state solidified soil slurry into a backfilling groove, vibrating, and maintaining under a constant temperature and humidity condition. The concrete has the advantages of fluidity, uniformity, low permeability, self-compaction and self-maintenance capability, high and low temperature resistance, freezing and thawing resistance, high crack resistance and compressive strength, can obviously enhance the internal structure of a soil body, and can be applied to the fields of buildings, bridges, tunnels and underground engineering in extreme environments.

The invention discloses an aerosol-generating article comprising an aerosol-generating substrate segment, the aerosol-generating substrate segment comprising a plurality of aerosol-generating capsules. According to the aerosol generating product provided by the invention, the aerosol generating capsule with a core-shell structure is used as a fuming material, so that the heating release temperature can be further reduced, and the harm of smoke is reduced.

The invention relates to the technical field of refractory materials, and provides a composite regenerated magnesia carbon brick and a preparation method thereof. The composite regenerated magnesia carbon brick is prepared from the following raw material components in parts by mass: 55 to 65 parts of waste magnesia carbon brick, 40 to 50 parts of fused magnesia, 7 to 10 parts of composite graphite, 3 to 5 parts of antioxidant and 4 to 7 parts of phenolic resin, the composite graphite is of a core-shell structure, and a core in the core-shell structure is magnesium oxide coated graphite; and the shell in the core-shell structure is 1, 3, 5-trimethoxybenzene. According to the technical scheme, the problem that the mechanical property of the composite regenerated magnesia carbon brick is poorer due to poorer wettability of phenolic resin on graphite in related technologies is solved.

The invention discloses a preparation method of a foamed thermal-insulation ceramic decorative plate in the technical field of building decorative materials. The method comprises the following steps: carrying out ball milling, spray drying, granulating and ageing on raw materials such as ceramic waste and kaolin; mixing and dispersing the aerogel-hydrogel gradient core-shell structure composite modified material and ceramic particles, and sieving to obtain composite powder; compounding sodium bicarbonate and azodicarbonamide with a foaming agent, mixing the foaming agent with the composite powder, and adding a surfactant and a dispersing agent to adjust the viscosity so as to prepare expandable ceramic slurry; the slurry is injected into a mold and coated with low-temperature glaze, and stepped heating sintering is conducted through a tunnel kiln and comprises the steps of preheating glue discharging, primary foaming, secondary sintering, gradient cooling and the like. The thermal insulation performance, the mechanical strength, the weather resistance and the decoration performance are synergistically improved, and the product is low in heat conductivity coefficient, high in compressive strength, excellent in ultraviolet aging resistance, firm in decoration layer combination and suitable for building outer walls and other scenes.

The invention relates to a preparation process and method for preparing core-shell nanoparticles and a polymer (PVP) film on a substrate of a common glass slide, wherein the core-shell nanoparticles are coated with tungsten-doped vanadium dioxide nanoparticles on the surface of silicon dioxide, and the process sequentially comprises the following steps of: pretreating a silicon dioxide and tungsten-doped vanadium dioxide core-shell structure and preparing a PVP mixed solution; the method comprises the basic operation procedures of ethanol dispersion of the core-shell structure, PVP dispersion, setting of stirring parameters, spin-coating parameters, drying parameters and the like. The invention also relates to an application of the core-shell nanoparticles and a polymer (PVP) film which are prepared on a substrate of a common glass slide and are coated with tungsten-doped vanadium dioxide nanoparticles on the surface of silicon dioxide in the fields of intelligent windows, infrared stealth, energy-saving glass and radiation refrigeration in the aspects of adjustable transmittance and adjustable radiation capability. The problems that a traditional vanadium dioxide nanoparticle film is low in visible light transmittance, poor in near-infrared modulation capacity, reverse in infrared radiance and the like are solved.

The invention discloses an anti-seepage and anti-corrosion concrete mortar admixture for seaport wharfs and a preparation method thereof. The invention relates to a high-performance cement-based composite material which comprises the following components in percentage by weight: 30-50% of Portland cement, 25-35% of surface-etched quartz sand, 5-20% of silica fume, 15-30% of a core-shell structure active substance and 5-8% of an ion response type calcium compensating agent. The core-shell structure active substance takes a micro-nano organic acid salt crystal as a core, and the surface of the core-shell structure active substance is coated with a polyelectrolyte response layer; the calcium compensating agent is formed by compounding calcium oxide and a zirconium phosphate carrier. Accurate crack self-repairing is achieved through a chloride ion triggered shell dissolution and calcium ion gradient release two-stage response mechanism, the anti-permeability grade reaches P18, the chloride ion diffusion coefficient is reduced by 50% or above, and the water-free self-repairing capacity for microcracks (smaller than or equal to 0.6 mm) is achieved.

The invention relates to the technical field of fused alumina zirconia bricks, in particular to a fused alumina zirconia refractory brick and a preparation technology.The fused alumina zirconia refractory brick is prepared from, by weight, 55-65 parts of alumina powder, 25-35 parts of zircon sand, 1-5 parts of modified nanometer alumina powder, 2-6 parts of binder, 1-2 parts of chromic oxide, 1-3 parts of yttrium oxide and 1-4 parts of fluxing agent. Through in-situ growth of a layer of carbon nanotube core-shell structure on the surface of nano-alumina, the core-shell structure can prevent direct contact between nano-alumina particles, so that the possibility of nano-alumina agglomeration is reduced, and nano-alumina is uniformly distributed in the corundum amorphous refractory brick. A finer dispersed phase is formed in the brick body, so that the expansion of cracks is hindered, and the toughness and the strength of the brick body are improved.

The invention relates to the technical field of multi-layer material preparation, in particular to a high-light-transmittance weather-proof impact-resistant striped sound insulation board. The problem that transparency, weather resistance and sound insulation effect of a traditional stripe material are difficult to consider at the same time is solved. The light scattering and absorption center is reduced and high transparency and low haze are realized through reactive extrusion of the recycled material, combination of high-temperature adsorption activated carbon, multi-stage high vacuum and deep purification of a reactive decolorizing agent, and matching of transparent dispersion diffusion master batch and a compatilizer. The surface layer adopts the core-shell weather-resistant master batch and the secondary high-energy UV fluorosilicone curing coating for double shielding of ultraviolet and inhibition of photodegradation and yellowing; styrene-maleic anhydride damping resin is introduced into the middle layer, and uniform inclined micropores and asymmetric stripes formed by supercritical CO2 are combined, so that the medium and low frequency sound insulation index is improved; the bottom layer is repaired and guaranteed to be durable in impact resistance by virtue of a core-shell toughening agent and molecular chain extension; the defects of traditional products are overcome, and the service life requirement of sound barriers for expressways and rail transit is met.

The invention discloses a core-shell structure aerogel and a preparation method and application thereof in refractory bricks, and belongs to the technical field of thermal insulation materials, and the preparation method comprises the following steps: adding zirconium oxychloride into an ethanol water solution at room temperature for hydrolysis, then adding carboxylated silicon dioxide aerogel, stirring and mixing, then adding a gelling agent to form a sol solution, and carrying out vacuum drying to obtain the core-shell structure aerogel. Performing sealed aging to obtain wet gel, and performing solvent replacement, supercritical drying and crushing to obtain core-shell structure aerogel; the method for applying the aerogel to the refractory brick comprises the following steps: adding the aerogel with the core-shell structure into an organic solvent for soaking, then adding the refractory brick raw materials with the particle size of 0.05-0.2 mm for mixing, then adding the refractory brick raw materials with the remaining particle size for mixing, and finally adding a bentonite solution for uniformly mixing to obtain a refractory brick mixture; and carrying out compression molding, high-temperature calcination and cooling to obtain the refractory brick. The prepared refractory brick has the characteristics of high strength, high temperature resistance and low heat conductivity, and the problem that the strength and heat insulation of a traditional refractory brick cannot be considered at the same time is solved.

The invention relates to the technical field of building energy-saving materials, in particular to a building envelope structure multifunctional composite energy-saving material and a preparation method thereof.The building envelope structure multifunctional composite energy-saving material is prepared from, by weight, 90-110 parts of lightweight aggregate, 15-30 parts of cement-based binder and 15-30 parts of microcapsule phase change unit; the particle size of the microcapsule phase change unit is 50-200 [mu] m, the microcapsule phase change unit is composed of a core-shell structure, the core of the microcapsule phase change unit is an organic phase change substance with the phase change temperature of 20-30 DEG C, and the shell of the microcapsule phase change unit is a cross-linked polymer layer doped with modified nano ferroferric oxide. The system effectively stabilizes indoor temperature fluctuation, reduces air conditioner energy consumption, can be widely applied to outer walls, inner walls, roofs, floors and other parts of buildings, and provides an efficient and energy-saving solution for modern buildings.

The invention provides a high-temperature solid heat storage material based on industrial solid waste, a preparation method of the high-temperature solid heat storage material and a heat storage pile, and belongs to the technical field of energy and new energy storage and energy saving materials. The high-temperature solid heat storage material is prepared by introducing three functional additives with a synergistic effect: a composite alkali-boron activator is used for bonding and forming solid waste raw materials through a geological polymerization reaction at a low temperature, and is converted into a fluxing agent at a high temperature to promote low-temperature densification of the material; a core-shell structure thermal conductivity reinforcing agent with an anti-oxidation glass shell layer constructs an efficient three-dimensional heat conduction network in the material, and the heat conduction rate is increased; meanwhile, the Li-Al-Si vitrified precursor powder is induced to separate out low-thermal-expansion microcrystals in a third temperature stage, and the material is endowed with thermal shock resistance stability through a microstress compensation mechanism; the three additives have a synergistic effect to improve the heat storage performance and mechanical stability of the material.

The invention relates to a building exterior wall coating and a preparation method thereof, and belongs to the technical field of building coatings. The coating is composed of a composite inorganic-organic hybrid film forming base material, a nano composite flame-retardant filler, a bio-based thickener, a photoresponsive hydrophobic aid, a low-foam wetting dispersant and deionized water. Wherein the composite base material forms an interpenetrating network structure through compounding of sodium potassium silicate and phosphate modified polyacrylate emulsion, and has inorganic phase hardness and organic phase flexibility; the nano flame-retardant filler adopts an Mg-Al layered dihydroxy oxide and cerium dioxide core-shell structure, and zinc borate is loaded to realize multi-stage flame retardance. The preparation method comprises ultrasonic-assisted emulsion polymerization, electrostatic self-assembly filler compounding and gradient curing processes, and during construction, a layered spraying and ultraviolet activation combined technology is adopted. The super-hydrophobic self-cleaning flame-retardant coating has excellent flame retardance, super-hydrophobic self-cleaning performance and long-acting weather resistance.

The invention relates to the technical field of coatings, and particularly discloses a low-temperature-resistant waterproof coating for an outer wall of a house building and a preparation process of the low-temperature-resistant waterproof coating. The water-based paint is prepared from the following raw materials in parts by mass: 200 to 250 parts of modified silicone acrylic emulsion, 75 to 125 parts of polyurethane-acrylate core-shell emulsion, 40 to 60 parts of polyether polyol modified nano filler, 15 to 25 parts of rubber nano powder, 10 to 20 parts of liquid polyisoprene, 22 to 34 parts of an auxiliary agent and 60 to 100 parts of a composite solvent. According to the low-temperature-resistant waterproof coating prepared by the invention, the elongation at break and the low-temperature bending resistance of a coating film are remarkably improved on the premise of keeping relatively good tensile strength and adhesive force.

The invention discloses a surface low-energy silicon dioxide shell phase change microcapsule, a moisture resistance control construction method and application thereof. Firstly, core-shell structure microcapsules with octadecane as a heat energy storage core material and silicon dioxide as a protective shell layer are prepared through an interfacial polymerization method, and phase change microcapsule powder is obtained. And then, constructing an alkylated low-energy interface layer on the surface of the microcapsule shell by utilizing an organosilane hydrolysis-condensation reaction. The phase change microcapsule treated by the method can effectively inhibit a shell layer from adsorbing free moisture in a humid environment, alleviate the phenomenon of interface instability at the initial stage of cement hydration, and improve the construction fluidity and circulating energy storage durability of a cement-based material. Meanwhile, the composite can be used as functional microparticles to be applied to building outer surface coatings, and antifouling, anti-infiltration and photo-thermal regulation and control effects are achieved. The method is simple, convenient and high in adaptability, large-scale production can be achieved, and a new solution is provided for construction of building functional materials with energy conservation, energy storage and interface stability.

The invention relates to the field of building materials, in particular to a preparation method of high-strength ceramsite, which comprises the following steps: uniformly mixing brick powder, Bayer process red mud, ardealite and titanium gypsum to obtain mixed powder, adding a binder, uniformly mixing to prepare raw nodules, sequentially forming a transition layer and a shell layer on the surfaces of the raw nodules, drying, sintering and cooling to obtain the high-strength ceramsite. The prepared ceramsite is low in water absorption rate and excellent in mechanical strength, the core-shell structure can effectively inhibit release of chloride ions, solid waste is fully utilized, environmental pressure is relieved, waste is turned into wealth, two purposes are achieved, and the ceramsite has certain social, economic and ecological benefits.

The application discloses a design method of a core-shell type repairing agent carrier for concrete crack self-repairing. The method belongs to the technical field of building materials and is based on the strength grade of applied concrete, the crack width, the crack area and the repairing component parameters, and a core-shell carrier with the inner and outer radii, the elastic modulus and the particle strength matched with the matrix concrete is designed based on the loading capacity and the mechanical response principle. The specific design steps are as follows: the inner radius of the core-shell structure carrier is determined based on the loading capacity design; the suitable outer radius of the carrier is determined according to the regional stress field distribution characteristics; the suitable elastic modulus of the carrier is determined according to the material parameters of the matrix concrete; and the particle strength design value of the core-shell carrier is determined according to the above parameters. The carrier designed by the method has reasonable loading capacity, is matched with the parameters of the concrete matrix and has no negative influence on the matrix strength.

The invention relates to the technical field of building materials, in particular to a composite saltpetering-resistant agent, saltpetering-resistant and yellowing-resistant colored facing mortar and a preparation method thereof.The composite saltpetering-resistant agent comprises a cation adsorption phase, a light stabilization phase and a hydrophobic phase; the cation adsorption phase is of a porous skeleton structure and comprises zeolite activated by acid and modified by organic functional groups; the light stable phase is a core-shell structure nano-composite and comprises a metal oxide core and a silicon dioxide shell; silanol groups of the hydrophobic phase are covalently bonded with hydroxyl groups on the surfaces of the cationic adsorption phase and the light stable phase. According to the technical scheme provided by the invention, the core problems of saltpetering, yellowing and insufficient durability of traditional facing mortar are synergistically solved by constructing a triple protection mechanism of chemical adsorption, physical barrier and light stability, the key indexes such as the saltpetering-resistant qualification rate, the weather resistance grade and the strength retention rate of the facing mortar can be improved, and the facing mortar has the advantages of high strength, high durability and the like. Furthermore, the decoration effect durability and the engineering applicability of the colored facing mortar are improved.

The invention discloses a glass fiber reinforced plastic as well as a preparation method and application thereof, belongs to the field of building energy-saving composite materials, and aims to solve the problems that the interface of the existing glass fiber reinforced plastic for glass fiber reinforced plastic doors and windows is easy to hydrolyze, and the mechanical property conflicts with the thermal insulation property. Raw materials of the material comprise epoxy modified unsaturated polyester resin, S-glass fiber cloth, a silane-titanate composite treating agent, core-shell structure glass beads and the like, and the material is prepared through fiber composite modification, bead preparation and composite molding. The interface stability is improved through bifunctional group modification, heat conduction is reduced through core-shell and particle size grading microspheres, mechanical support is guaranteed through S-glass fibers, the tensile strength is larger than or equal to 85 MPa, the heat conductivity coefficient is smaller than or equal to 0.09 W / (mK), glass fiber reinforced plastic door and window manufacturing is adapted, existing equipment is reused, and the high-efficiency and energy-saving industry direction is met.

The present invention relates to a separation membrane comprising a separation membrane substrate having a porous structure and a coating layer formed on at least one surface of the separation membrane substrate, wherein the coating layer comprises a surface-modified inorganic material having a core-shell structure in which a polymer is bound to the surface of inorganic particles.

The embodiment of the utility model discloses a scale inhibition core assembly, a scale inhibition mechanism and a water outlet device, and relates to but is not limited to kitchen and bath technologies. The scale inhibition core assembly comprises a core shell, a first scale inhibition unit and a second scale inhibition unit, wherein the core shell is provided with a water inlet end, a water outlet end and a containing cavity. The first scale inhibition unit is installed in a first installation space, close to the water inlet end, of the containing cavity. The second scale inhibition unit is installed in a second installation space, close to the water outlet end, of the containing cavity. Wherein the first scale inhibition unit and the second scale inhibition unit are made of different materials, so that the second scale inhibition unit can continuously perform scale inhibition on water after the first scale inhibition unit completes scale inhibition on water, the defect of the first scale inhibition unit on water scale inhibition is made up, and the scale inhibition effect of the scale inhibition core assembly is improved.

The utility model discloses a water purifier mounting structure with a filter element fool-proof mounting structure, which comprises an outer surrounding shell, an inner mounting shell is fixedly mounted in the outer surrounding shell, a front panel is fixedly mounted on the outer surface of one side of the inner mounting shell, an insertion fool-proof mechanism is arranged on the side surface of an insertion rotating plate, and the insertion fool-proof mechanism is fixedly mounted on the outer surface of one side of the inner mounting shell. By means of the insertion fool-proof mechanism, the situation that the water purifier cannot be used due to the fact that the filter element is wrongly inserted in the using process is avoided. According to the water purifier mounting structure provided with the filter element fool-proof mounting structure, a filter element needs to be replaced when a water purifier is used for a long time, at the moment, a filter element shell can be taken out, then a new filter element shell can be inserted into the inner sides of an insertion rotating plate and an insertion clamping jaw, an insertion groove and an insertion protruding block are clamped, and the filter element can be conveniently replaced. And after the filter element shell is inserted by a wrong model, the insertion convex block is blocked, so that the filter element shell cannot be inserted into the insertion rotating plate, and the probability of wrong insertion of the filter element shell is reduced.

The invention discloses a composite material spherical particle for paving a ground, and a preparation method and a use method of the composite material spherical particle. The spherical particle is of a core-shell structure and contains cork particles, coffee grounds powder and polyurethane, the cork particles are located in the middle, and coffee grounds and polyurethane are evenly coated on the outer surface of the cork particles. The preparation method comprises the following steps: granulating on a centrifugal granulator, and gradually and uniformly coating the polyurethane and the coffee residue powder on the outer surfaces of the cork particles to obtain a semi-finished product; and carrying out microwave heating to obtain a finished product. When the ground is paved, a flat plate heating device needs to be used, the spherical particles are placed at the high-position end of a heating plate of the heating device, the spherical particles roll to the ground needing to be paved while being heated, the spherical particles falling in place are compacted immediately, and paving is completed. When the cork-coffee residue-polyurethane composite material spherical particles provided by the invention are used for paving an outdoor runway, the advantages in the aspects of prolonging the service life of the runway, improving the use performance, protecting the environment, reducing the economic cost and the like are outstanding.

The invention relates to a construction method and application of a ternary composite photocatalyst, and the construction method comprises the following steps: step 1, synthesizing Bi2MoO6: taking Bi (NO3) 3.5 H2O and Na2MoO4. 2H2O as precursors, reacting for 12 hours at 180 DEG C by adopting a hydrothermal method, and centrifugally washing and drying to obtain Bi2MoO6 powder; step 2, loading Fe3O4 nanoparticles on the surface of Bi2MoO6 to form a composite core-shell structure: mixing FeCl3. 6H2O, FeCl2. 4H2O and the Bi2MoO6 powder obtained in the step 1, heating to 80 DEG C under the protection of nitrogen, adding a NaOH solution to adjust the pH value to 10, and reacting for 1 hour to form a Fe3O4 / Bi2MoO6 core-shell structure composite material; step 3, anchoring Ag nano-particles: dispersing the Fe3O4 / Bi2MoO6 composite material obtained in the step 2 in water, adding an AgNO3 solution, stirring in a dark place, and then anchoring Ag nano-particles on a xenon lamp (lambda gt; and reducing Ag < + > into Ag0 under the irradiation of SiO2 / Bi2MoO6, thereby obtaining the Fe3O4 / Bi2MoO6 / Ag composite photocatalyst. The Fe3O4 / Bi2MoO6 / Ag composite photocatalyst is a novel Fe3O4 / Bi2MoO6 / Ag composite photocatalyst, light absorption is enhanced through plasma resonance, carrier separation is promoted through heterojunction, magnetic recovery of Fe3O4 is achieved, and the bottleneck is solved.

This invention discloses a lightweight sound-absorbing building material, its preparation method, and its application in ceiling components, relating to the field of lightweight building materials technology. The lightweight sound-absorbing building material of this invention consists of a porous plate and a glaze layer on the surface of the porous plate. The glaze layer is formed by spraying glaze onto the surface of the porous plate; the porous plate is formed by sintering a plate-forming composition; the plate-forming composition includes the following raw materials: waste foamed ceramic powder, diatomaceous earth, hollow glass microspheres, cellulose nanocrystals, bilayer fibers, a foaming agent, and an ethanol solution of polyethyleneimine. The core-shell structure bilayer fibers introduced in this invention, with a mesoporous barium titanate-silica composite phase as the core and an MXene-graphene composite phase as the shell, effectively improve the material's sound absorption and noise reduction capabilities; the introduction of hollow glass microspheres and cellulose nanocrystals further enhances the material's lightweight properties, flexural strength, and sound absorption and noise reduction capabilities. Therefore, this invention has broader application prospects.

The invention relates to the technical field of building materials, and discloses a burning-free steam-curing-free all-solid waste type iron tailing artificial fine aggregate and a preparation method thereof.The preparation method comprises the following steps that iron tailings are dried and screened, and iron tailing powder with the particle size smaller than 0.3 mm is obtained; mixing the pozzolanic material, the exciting agent, the expanding agent and the reinforcing agent, and uniformly stirring to obtain an all-solid waste cementing material; the iron tailing powder and part of the all-solid waste cementing material are mixed, ground and stirred evenly, and a mixture is obtained; carrying out rolling and watering treatment on the mixture to obtain iron tailing microspheres with the diameter of 1-4mm; adding the residual all-solid waste cementing material into the iron tailing microspheres for rolling treatment, so that the surfaces of the iron tailing microspheres are wrapped with the all-solid waste cementing material, and composite particles with core-shell structures are obtained; the composite particles of the core-shell structure are subjected to curing treatment, and the iron tailing artificial fine aggregate is obtained. Energy consumption, carbon emission and production cost can be reduced, high-value utilization of multi-element solid waste is realized, and shortage of natural gravel aggregate is relieved.