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141 results about "Sandwich like" patented technology

Sandwich-like hollow structure metallic oxide @ noble metal nanoparticles @ metallic oxide catalyst as well as preparation method and use thereof

The invention discloses a sandwich-like hollow structure metallic oxide @ noble metal nanoparticles @ metallic oxide catalyst as well as a preparation method and the use of the sandwich-like hollow structure metallic oxide @ noble metal nanoparticle @ metallic oxide catalyst. The method combines a sol-gel method and a hydrothermal method, and comprises the steps of preparing a spherical SO2 template with uniform size by the sol-gel method; then, coating a metallic oxide shell layer on the surface of the spherical SO2 template, adsorbing noble metal nanoparticles to the surface of the shell layer by electrostatic action, and further coating another metallic oxide shell layer on the surface of the spherical SO2 template by the sol-gel method; finally, carrying out crystallization on the amorphous metallic oxide shell layers and removing the SO2 template by adopting the hydrothermal method to obtain the sandwich-like hollow structure catalyst. The existing 'high-temperature calcination and alkali etching' method is replaced by the hydrothermal method; the method has the characteristics of being simple in operation, high in yield and good in monodispersity; the prepared sandwich-like hollow structure material is excellent in activity and stability in a catalytic reaction.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA

Container and platform floor with bamboo oriented structure shaving board as sandwich layer and manufacturing method thereof

Belonging to the field of composite boards and production methods thereof, the present invention relates to a oriented structural bamboo flakeboard as the sandwich layer of a container and a carriage bottom board and a production method thereof, in particular to a container and a carriage bottom board, which are produced with the oriented structural bamboo flakeboard as the sandwich layer substrate, and a production method thereof. The oriented structural bamboo flakeboard is composed of a surfacial layer, a sandwich layer and a bottom layer which are bonded together, and is characterized in that the sandwich layer is of a structural flakeboard which is formed by more than five layers of crisscross bamboo flakes which are directionally paved and bonded, and the surfacial layer and the bottom layer are of more than one layer of single wood veneer or impregnated paper or phenolic impregnated paper, or the surfacial layer and the bottom layer are the composite layers of the wood veneer and the impregnated paper or the phenolic impregnated paper. The production method includes the production and bonding of the sandwich layer, the surfacial layer and the bottom layer. The present invention resolves the problems of the scarcity and ecological destruction of the materials of the traditional containers and carriage bottom boards, and not only is the cost reduced, but also the mass production of the novel bottom boards which meet the technical requirements of the international container and carriage bottom board industry is satisfied.
Owner:邱天祥

Production method of sandwich-like structure solid polymer electrolyte membrane, and application of sandwich-like structure solid polymer electrolyte membrane in solid-state lithium ion battery

The invention discloses a production method of a sandwich-like structure solid polymer electrolyte membrane, and an application of the sandwich-like structure solid polymer electrolyte membrane in a solid-state lithium ion battery, and belongs to the technical field of solid-state lithium ion batteries. The production method comprises the following steps: taking a polymer and an alkali metal saltaccording to a mass ratio of (2-6):1, dissolving the polymer and the alkali metal salt in acetonitrile, and performing stirring and uniform mixing to obtain a solution A; taking half of the solution A, adding a plasticizer, and performing full stirring and uniform mixing to obtain a solution B; and respectively coating two sides of a support membrane with the solution A and the solution B, and drying the coated support membrane in a vacuum drying box for 12-24 h to produce the sandwich-like structure solid polymer electrolyte membrane. The invention also discloses a production method of a solid-state lithium ion battery using the sandwich-like structure solid polymer electrolyte membrane. The produced sandwich-like structure solid polymer electrolyte membrane has the advantages of high ionconductivity, good mechanical strength, low interface impedance, good interfacial stability, and effective improvement of the cycling stability of the solid-state lithium ion battery.
Owner:HENAN NORMAL UNIV +1

Composite material with foam sandwich structure and preparation method of composite material

The invention discloses a composite material with a foam sandwich structure and a preparation method of the composite material. The composite material comprises an upper surface layer, a lower surface layer and a foam sandwich layer which is located between the upper surface layer and the lower surface layer; the upper surface layer and the lower surface are formed by overlapping layered fiber fabrics; the foam sandwich layer is formed by arranging a plurality of foam strips, foam plates or foam blocks; parallel sheet-like fiber fabrics are clamped between two adjacent foam strips or adjacent foam plates of the foam sandwich layer; the surfaces on the middle positions of each two foam strips are provided with resin grooves which are parallel with the surface layers; and the resin grooves are crossed with a resin make-up groove which is penetrated in the complete foam sandwich layer in the longitudinal direction; the upper surface layer, the lower surface layer and the sandwich layer are sewn into a complete structure by a sewing rough yarn. The composite material provided by the invention is light in weight and has high strength; the preparation process is simple and the composite material can be molded in one step; and moreover, resin can be injected from the middle layer of the sandwich layer and the injection speed is improved.
Owner:SOUTH CHINA UNIV OF TECH

Silicon carbon composite material, and preparation method and application thereof

The invention discloses a silicon carbon composite material, and a preparation method and an application thereof. The preparation method comprises the following steps of performing wet process ball milling on glass powder and a laminated layer carbon material to obtain a uniform mixed product of glass and the carbon material; next, performing uniform mixing and compacting on the product and magnesium powder and fused salt to form an ingot; and then performing a magnesium thermal reaction, and carrying out acid washing on the reaction product to obtain a sandwich layer-shaped porous silicon/graphene-like structured composite material. The preparation method are simple in steps and easy to implement, and the raw materials are wide in resource; more importantly, the mixture is made into the ingot through the compacting process, and then the magnesium thermal reaction is performed, so that the tap density of the silicon carbon negative electrode material is greatly improved, and the volumetric specific capacity of the negative electrode material is improved; meanwhile, by compounding with the graphite and other carbon material to form the sandwich-like structure, the electronic conductivity of the material is improved effectively, and the compatibility between the silicon base material and an electrolyte can be improved, thereby improving cycle performance and rate capability of the material; and therefore, the silicon carbon composite material can be applied to the negative electrode material with high power density and high energy density of the lithium ion battery.
Owner:WUHAN UNIV OF SCI & TECH

Method for preparing sandwich-like Ce: YAG glass-ceramic sheet by tape casting method

InactiveCN106892562AGood photoelectric parametersReduce direct contactSemiconductor devicesSandwich likeSlurry
The invention relates to a method for preparing a sandwich-like Ce: YAG glass-ceramic sheet by a tape casting method. The method comprises the following steps: (1) a glass raw material is prepared from the following effective materials by mole fraction: 10 to 20% of ZnO, 5 to 17% of Sb2O3, 25 to 40% of TeO2, 6 to 13% of Li2O, 10 to 15% of K2O, and 5 to 20% of Ce: YAG phosphor; after the glass raw materials are thoroughly mixed and ground, a mixture is mixed with distilled water to obtain a mixed slurry; (2) the mixed slurry is uniformly coated on a white glass sheet having a thickness of 0.1 to 0.5 mm and matched with the size and shape of a light source by a tape casting machine; (3) the coated white glass sheet is dried at a temperature of 200 to 300 DEG C for 6 to 9 hours, the white glass sheet with the same shape and size is covered on the surface layer of the mixture after the water is evaporated, the sandwich-like glass clamping sheet is sintered at a temperature of 600 to 800 DEG C for 1 to 4 hours and then cooled to room temperature to form a sandwich-like Ce: YAG glass-ceramic sheet with a thickness of 0.4 to 1.5 mm. The sandwich-like glass-ceramic sheet with better photoelectric parameters is obtained by firing at a relatively low temperature.
Owner:WENZHOU UNIVERSITY
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