28 results about "Core shell" patented technology

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.

This application provides a fast-curing joint repair compound and its preparation method. The fast-curing joint repair compound comprises the following raw materials in parts by weight: 50 parts silicate cement, 40-60 parts styrene-acrylic emulsion, 5-10 parts modified slag, 0.4-1 parts hollow microspheres, 0.5-1.5 parts glass fiber, 100-150 parts quartz sand, 0.1-0.3 parts dispersing suspending agent, 0.1-1 parts defoamer, and 20-40 parts water. The modified slag has a core-shell structure, comprising, in sequence, a slag core, calcium salt components loaded on the surface or in the pores of the slag core, a humate layer formed on the surface, and a quaternary ammonium salt cationic polymer layer coating the outside of the humate layer. This joint repair compound has the characteristics of short initial setting time, high early strength, and good construction rheology, and is suitable for building joint repair, road maintenance, and concrete structure repair.

The application relates to the field of film technology and discloses a film for furniture packaging and a production process, which comprises a film body, the film body comprises an LLDPE base, an mLLDPE base, a VLDPE base, carbon nanotubes, core-shell structure nanoparticles, a compatilizer, PCM capsules and silicone; the cross section of the film body is sequentially divided into an inner layer area, a middle area and an outer layer area; the outer layer area is provided with the LLDPE base, the VLDPE base and the carbon nanotubes; the middle area is provided with the LLDPE base, the mLLDPE base, the core-shell structure nanoparticles and the compatilizer; the inner layer area is provided with the LLDPE base, the PCM capsules and the silicone; and the silicone is located on the outer surface of the inner layer area. The above raw materials are mixed and extruded into a tubular film bubble through a co-extrusion machine, and the film body is formed through a film blowing process of stretching and cooling. The film body has high tensile strength, puncture resistance and tear resistance, can reliably resist the puncture of furniture corners and the collision in transportation.

This invention relates to a method for controlling deformation during the processing of thin-walled components, comprising the following steps: machining a blank using a cutting tool to form a core shell, the core shell having a main shell and a secondary shell, the outer diameter of the main shell being larger than that of the secondary shell; the main shell also having a main end hole, and the secondary shell also having a secondary end hole, with a process block inside the secondary end hole; wrapping a protective strip around the surface of the main shell, forming a core shell assembly with the core shell and the protective strip; removing a portion of the material from the main shell and the protective strip using a cutting tool to form a feature hole on the surface of the core shell assembly; then removing the process block using another cutting tool; and finally separating the core shell assembly, the positioning plate, and the machine tool spindle to complete the processing. By changing the process sequence, the residual thermal stress inside the core shell is significantly released before wrapping the protective strip and then machining to form the feature hole, reducing the difference in shrinkage deformation between the protective strip and the core shell, thus improving processing accuracy and the appearance quality of the core shell assembly.

The application provides a self-stabilizing turnover box, an inner shell is installed in an outer shell with a gap between the inner shell and the outer shell, a core shell is installed in the inner shell and can rotate around its axis; a plurality of magnets and flexible pads are arranged on the inner wall of the outer shell cover and the inner wall of the outer shell, magnets are also arranged on the corresponding positions of the outer wall of the core shell cover and the inner wall of the inner shell, and the magnets in the corresponding positions have the same magnetism; the outer shell and the outer shell cover are made of metal materials with thermal insulation interlayers, and the core shell is made of metal materials with vacuum interlayers; a thermal insulation barrel is used in the core shell to divide it into three layers, the barrel wall is provided with a plurality of through holes, ice plates are filled in the upper and lower layers, and blood products are placed in the middle layer; and a pull rod and a roller are installed on the outer side wall of the body. The application adopts a magnetic suspension structure, which can weaken the impact and vibration of the inner objects when the external motion.

This invention relates to the field of metal matrix composite technology, and discloses a high-strength, toughness, and wear-resistant iron-based ceramic composite material, its preparation method, and its application. The composite material includes an iron-based alloy matrix and a reinforcement distributed therein. The preparation method mainly includes: mixing aluminum borate whiskers with tantalum powder, sintering them by spark plasma to form a porous preform, and then densifying the preform with iron-based alloy foil through a hot-pressing melting process. This invention, through a core-shell structure reinforcement design, utilizes a tantalum-rich shell layer to coordinate the performance differences between the ceramic phase and the iron matrix, strengthens the interfacial bonding, and thus simultaneously improves the hardness, flexural strength, impact toughness, and wear resistance of the composite material. This material is suitable for manufacturing components that withstand high-stress impact wear in fields such as mining machinery and engineering equipment.

This invention discloses a high-strength, early-strength special concrete and its preparation method, belonging to the field of building materials technology. The core advantage lies in achieving early strength, high strength, high density, and high durability through structural modification of core-shell nanospheres, synergistic hydration of a dual-cementing system, and the compounding of active admixtures. The core-shell nanospheres of this invention have a nanoscale morphology, which can fill the micro-voids of the concrete cementitious system, achieving a micro-aggregate effect and accelerating the hydration reaction of cement and low-alkali sulfoaluminate cement. Simultaneously, the low-alkali sulfoaluminate cement itself has a fast hydration rate, and combined with the hydration-activating effect of MgO, the two work synergistically with the core-shell nanospheres to form a stable hydration product structure in the early stages. This allows for high strength without long-term curing, meeting the special requirements of rapid construction, rapid demolding, and rapid load-bearing in emergency repairs, precast components, and municipal emergency projects.

This invention discloses building energy-saving thermal insulation materials, their preparation methods, and applications, relating to the technical fields of aerogels and their products, and building energy-saving thermal insulation materials. This invention constructs core-shell structured modified aerogel microspheres, combines them with dual-scale reinforcing fibers and modified geopolymer binders, adds nano-montmorillonite modifiers and composite anti-aging agents, and employs a composite foaming and gradient temperature-increasing atmospheric pressure drying process to prepare a composite insulation material with ultra-low thermal conductivity, high mechanical strength, and excellent water and weather resistance. This material overcomes the shortcomings of traditional aerogel materials, such as poor dispersibility, high brittleness, high preparation cost, and rapid performance degradation in humid and hot environments. Its room temperature thermal conductivity is as low as 0.017 W / (mK), its compressive strength can reach 1.92 MPa, and its water absorption rate is less than 1%. It can be widely used in the fields of ultra-low energy consumption building exterior wall insulation, roof insulation, and basement exterior wall insulation, and has significant prospects for industrial application.

This invention discloses a preparation process for high-zircon content zircon bricks, belonging to the field of refractory materials technology. This process aims to solve the technical problem of the inability to achieve low-temperature full densification of zircon materials due to their easy decomposition at high temperatures during traditional sintering. The main steps include: firstly, preparing active zircon micropowder with high lattice strain energy through high-energy grinding; secondly, using heterogeneous agglomeration technology to coat the active micropowder onto the surface of inert coarse aggregate, constructing a "core-shell" structure granulated material; and finally, performing low-temperature solid-state sintering below the decomposition temperature, utilizing the distortion energy stored in the active micropowder to drive densification. This process simultaneously controls amorphization degree, Zeta potential, debinding oxidation, sintering atmosphere, and cooling regime. This invention successfully prepares high-density, high-strength, highly erosion-resistant, and glass-phase-free high-performance zircon bricks, suitable for harsh environments such as glass melting furnaces, while completely avoiding the thermal decomposition of zircon.

The utility model relates to the technical field of shell core machine, specifically disclose a sand barrel core plate moving device for shell core machine, including fixed support frame and set up mounting frame on fixed support frame, be provided with the sliding frame between mounting frame and fixed support frame, be equipped with driver between sliding frame and fixed support frame, sliding frame slips on mounting frame through driver, the both sides top of mounting frame all is provided with guide rail, the both sides bottom of sliding frame all is provided with sliding part, and sliding part is installed in guide rail and slides on guide rail, the sand blasting equipment on the sliding frame of the utility model moves to the below of feed hopper through driver, and the feed hopper adds the coating sand to the sand blasting equipment, and the sand blasting equipment moves to the sand blasting position and carries out sand blasting, adopt the way of jointing between sliding part and guide rail and be connected, replace the driving mode of threaded lead screw, can reduce the position deviation between sand blasting mouth and mould sand inlet, improve the sand blasting effect.

This invention discloses a volcanic slag-based non-fired core-shell structure ceramsite, its preparation method, and lightweight insulating concrete. The preparation of the non-fired core-shell structure ceramsite includes mixing volcanic slag powder, volcanic slag particles, waste EPS insulation board particles, electrolytic manganese slag, modified sludge powder, and water, and adding the mixture to a disc granulator to granulate core raw material balls with a particle size of 3-8 mm. The mixture is then fed into the disc granulator and coated with a mixture of the outer shell slurry and aluminum powder until the ball size reaches 5-10 mm. CO2 gas is introduced for curing to obtain volcanic slag-based non-fired core-shell structure ceramsite. This invention achieves functional zoning utilization of solid waste by preparing non-fired "core-shell structure" ceramsite, and, in conjunction with a special all-solid waste cementitious material, constructs a multi-scale, gradient porosity and functional system in concrete consisting of "lightweight core pores - dense outer shell layer - fine aggregate gradation pores - matrix micropores," thereby simultaneously addressing multiple objectives such as solid waste disposal, building energy conservation, and synergistic improvement of material performance.

The application belongs to the technical field of building materials, and particularly relates to a time-divided shrinkage-controlling composite expansion agent and a preparation method thereof. The composite expansion agent is composed of the following components in parts by weight: 0.5-8 parts of an azo compound, 20-30 parts of magnesium oxide, 10-30 parts of calcium oxide, 30-50 parts of calcium aluminate-calcium sulfoaluminate cement clinker, 5-10 parts of spherical sodium polyacrylate after pre-water absorption, and 5-10 parts of core-shell structure polyacrylamide resin / kaolin composite ball. The time-divided shrinkage-controlling composite expansion agent improves the full-time volume stability of concrete, greatly reduces the volume shrinkage of cement stone, and fundamentally solves the problem of large shrinkage of ultra-low water-binder ratio concrete.

The application discloses a silicate modified fly ash based low-temperature grouting material and a preparation method thereof, and belongs to the technical field of grouting materials. The grouting material is obtained by mixing dry-mixed powder and water, and the dry-mixed powder comprises silicate modified fly ash, a basic cementing component, a low-temperature nucleation component, a water phase regulating component and a rheological adjusting component, wherein the silicate modified fly ash is a core-shell structure particle with a silicate coating layer on the surface. The application further discloses a preparation method of fly ash pretreatment, surface composite modification, temperature control drying film forming, step-by-step dry mixing and on-site water adding slurry forming. The material is suitable for grouting construction under low-temperature conditions.

This invention discloses a polyvinyl chloride (PVC) plastic flooring with wear-resistant and anti-slip properties, relating to the technical fields of polymer materials and building decoration materials. The raw materials include 100 parts of PVC resin, 25-35 parts of plasticizer, 3-5 parts of composite stabilizer, 15-25 parts of wear-resistant modifier, 8-12 parts of anti-slip aggregate, 20-30 parts of filler, and processing aids. The wear-resistant modifier is an in-situ synthesized multi-layered core-shell structure, comprising a vinylsilane-activated nano-cerium dioxide core, a cross-linked polyphosphazene flame-retardant layer formed by the condensation of hexachlorocyclotriphosphazene and 4,4'-dihydroxydiphenyl sulfone, and a fluorinated epoxy polymer shell copolymerized from hexafluorobutyl methacrylate and glycidyl methacrylate. This modifier achieves nanoscale dispersion through cross-linking with the matrix via active epoxy groups, simultaneously imparting high wear resistance, stain resistance, hydrophobicity, wet-state anti-slip properties, and synergistic flame-retardant properties to the flooring. The preparation method includes two stages: in-situ synthesis of the wear-resistant modifier and blending molding of the PVC flooring.

This invention discloses an assembly device and processing method for atomizing cores. The assembly device includes a frame, on which a turntable and a turntable drive device for controlling the rotation of the turntable are mounted. Several fixtures are fixedly mounted on the turntable and rotate with it. Each fixture has a product mounting position and an initial placement position. A wicking cotton feeding mechanism, a heating wire feeding mechanism, a round rod feeding mechanism, a shell feeding mechanism, a gear plug feeding mechanism, and a unloading mechanism are sequentially arranged on the outer periphery of the turntable. A cotton-cutting mechanism is also mounted on the frame, positioned between the heating wire feeding mechanism and the round rod feeding mechanism, or between the round rod feeding mechanism and the shell feeding mechanism. The processing method, performed using the aforementioned processing device, can save labor costs. The position of the cotton-cutting mechanism can be adjusted according to actual conditions, making it suitable for assembly scenarios where the atomizing core shell has an opening or not.

This invention discloses a modified concrete material, an integrated cable conduit foundation, and a molding method, belonging to the field of lightweight building materials technology. The modified concrete material consists of the following components by weight: silicate cement, mineral powder, silica fume, river sand, crushed stone, thermal conductivity reinforcing filler, flexible shrinkage-reducing component, polymer fiber, composite water-reducing agent, and water. The thermal conductivity reinforcing filler is a 3:1 mixture of modified silicon carbide powder and silica-coated spherical aluminum powder; the flexible shrinkage-reducing component is a core-shell structure particle of polyethylene glycol diglycidyl ether coated with magnesium oxide. The molding method includes the installation of a modular positioning support system, cable conduit laying, modified concrete preparation, and layered pouring. This invention achieves high thermal conductivity, high density, and synergistic expansion control through a dual core-shell structure and optimized filler particle size distribution, making it suitable for underground cable conduit foundation construction.

The application discloses a deep learning driven thermochromic flexible temperature sensor and a preparation method thereof, and steps are as follows: 1) dividing a target temperature into three intervals, and selecting three phase change materials matching phase change temperatures; 2) mixing the three phase change materials with leuco agents and color developing agents respectively to prepare red, green and blue thermochromic materials, and encapsulating the thermochromic materials into reversible thermochromic microcapsules with core-shell structures having transparent shell layers through an in-situ polymerization method; 3) blending the three-color reversible thermochromic microcapsules, coating a fabric surface through silk screen printing, drying, or weaving after melt spinning of composite fibers, and forming FSF; 4) shooting color change pictures of the FSF at different temperatures; 5) inputting picture data into a deep learning model for training; and 6) assembling the FSF with the trained model to obtain an FTS. The application takes the colorful color change microcapsules as a core, combines two fabric preparation processes, realizes multi-color signal recognition and temperature quantitative monitoring through deep learning, and has the advantages of flexibility, stability, a wide temperature range, high-precision visual temperature measurement capability and the like.

The application relates to the technical field of building materials, in particular to an early-strength Belite sulphoaluminate cement clinker and a preparation method thereof, which comprises the following steps: uniformly mixing a mixture of dealkalization red mud and carbide slag, aluminum slag, phosphogypsum, magnesium slag and a modified composite mineralizer, grinding to obtain cement raw material, gradient calcining the cement raw material to obtain clinker, and rapidly cooling the clinker to room temperature through liquid nitrogen to obtain the early-strength Belite sulphoaluminate cement clinker. The modified composite mineralizer with a core-shell structure can uniformly disperse and continuously and stably release active components in calcination, effectively reduces the clinker sintering temperature and liquid phase formation temperature, reduces energy consumption, the mineralizer can promote the full formation and uniform distribution of calcium sulphoaluminate, Belite and other high-strength minerals, inhibit the formation of harmful phases and composition segregation, improve the overall cementitious activity of the clinker, and the core-shell structure can protect the active components from being consumed in advance, and ensure that the active components continuously play a role at high temperatures.

The application belongs to the technical field of advanced composite materials and structure engineering, and particularly relates to a lightweight anti-seismic composite material and a preparation method thereof. The material is a sandwich structure, comprising upper and lower panels and an intermediate core layer. The upper and lower panels are composed of a resin matrix and carbon fibers in which metal nanoparticles are in-situ compounded. The intermediate core layer is prepared by laser selective melting or precise sheet metal folding to obtain a negative Poisson's ratio metal lattice core layer and then subjected to surface roughening treatment. A core-shell damping emulsion is prepared on the surface of the core layer by a step-by-step emulsion polymerization method, and a functional damping coating is formed by coating and solidification. The panels and the core layer are compounded and solidified by a vacuum-assisted resin transfer molding process. Through multi-scale collaborative design, the lightweight, high strength, high damping and excellent impact resistance are synergistically optimized, the structure has high integrity and high designability, and is suitable for building seismic mitigation, lightweight transportation and high-end equipment protection.

The application provides a non-full filling phase change capsule liquid-solid fluidized bed heat storage device, and belongs to the technical field of heat storage. In view of the problem of insufficient heat transfer efficiency of the existing phase change heat storage equipment, the following technical scheme is provided. The fluidized bed main body of the device is a cylindrical barrel, and a conical pipeline is arranged at the upper and lower ends to realize uniform flow distribution, and a ball blocking net is arranged to block the capsules and allow only the medium fluid to pass. The barrel is covered with a heat preservation layer to reduce heat loss. The core heat storage carrier of the device is a core-shell structure phase change capsule with internal non-full filling phase change material. According to the density difference between the capsule and the external medium, the capsule forms a liquid-solid fluidized state of suspension, rotation and collision through the combined action of downward liquid flow and buoyancy, or the fluid pumped from the bottom to overcome gravity. A flow valve is arranged to adjust the flow to ensure stable fluidization. The fluidized state significantly weakens the temperature stratification phenomenon of the fluidized medium, and at the same time promotes the forced convection of the phase change material in the capsule, destroys the thermal boundary layer and strengthens the heat transfer, and effectively improves the heat storage and release efficiency.

The application discloses a stress luminescence type chemical anchoring fog seal layer material with blackening and wear resistance functions and a construction method thereof, and relates to the technical field of pavement engineering pre-maintenance. The fog seal layer material is prepared from near-neutral non-ionic emulsified asphalt as a stable reaction matrix, high-carbon black content activated latex slurry is introduced to realize blackening and network enhancement of the asphalt pavement, the interface bonding and mechanical-optical response triggered by traffic load are realized through core-shell structure stress luminescence particles, and the interface chemical anchoring reaction is triggered when the demulsification of the interface catalytic anti-skid aggregate. The components play a synergistic effect in the storage, construction and service stages, and finally form a reinforced seal layer with stress luminescence visual guidance, high blackness, high anti-skid and long-term durability functions on the pavement, and the application is especially suitable for improving the road traffic safety in dark environments such as tunnels and road sections without street lamps.

The utility model relates to the technical field of shell core machine, disclose a kind of sand blocking mechanism of sanding of shell core machine, including mounting bracket, the upper portion of mounting bracket is equipped with sand bin, the lower portion of mounting bracket is provided with fixed frame, the lower portion of fixed frame is slidably equipped with sand baffle, the sand baffle is provided with guide unit, sand bucket is contacted with guide unit after moving to the lower portion of fixed frame, realize guide unit drive sand baffle movement and open the outlet of sand bin, and then sand material is guided into sand bucket.In the utility model, after sand bucket moves to the lower portion of sand bin, sand baffle opens the outlet of sand bin by guide unit, realizes the feeding of sand bucket, when cleaning old sand material in sand bucket, the position of sand baffle is limited by limiting unit, so that sand baffle and the outlet of sand bin are misaligned, and then the outlet of sand bin is in normal open state, so as to quickly empty old sand in sand bin, realize the replacement of sand material in sand bin.

This invention provides a method for preparing a high-temperature heat exchange fluid with multiphase change particles in the temperature range of 100-400℃, comprising the following steps: providing at least two phase change core materials with different melting points within the temperature range of 100℃-400℃; forming shell layers on the surface of the phase change core materials respectively to obtain phase change particles with a core-shell structure; performing surface modification treatment on the phase change particles with the core-shell structure; and dispersing the surface-modified phase change particles in a high-temperature stable liquid base to form a suspension. When the fluid of this invention comes into contact with a high-temperature pipe wall, the particles melt instantly and absorb heat, forming a natural heat buffer pocket, thus homogenizing the pipe wall temperature and completely eliminating the cracking and coking accidents caused by local hot spots exceeding 350℃ in traditional heat transfer oils.

The application relates to a surface scratch-resistant treatment method for a polypropylene composite material for automobile exterior decoration, and belongs to the technical field of automobile polymer material modification. Nano-aluminum oxide is used as a core, is modified on the surface through a silane coupling agent KH-570, and is coated with polymethyl methacrylate to form a core-shell structure nano particle; a base material is modified through blending; the modified polypropylene base material is subjected to degreasing and dust removal treatment; the pretreated base material is placed into a plasma treatment equipment and is subjected to activation treatment; gradient coating deposition is carried out; the deposited base material is subjected to ultraviolet curing or heat curing treatment, and a scratch-resistant polypropylene composite material product for automobile exterior decoration is obtained; the coating layer is formed into a stable crosslinked structure through curing, and the scratch resistance and durability are ensured. Through the synergistic effect of the "core-shell nano particle-hyperbranched fluorosilane blending modified base material" and the "plasma activation-gradient coating deposition", double scratch-resistant protection from the material body to the surface is realized, and excellent mechanical properties and long-term use durability are considered.