8results about How to "Retain performance" patented technology

This application relates to the field of solar cell technology and discloses a method for recycling the bottom cell in a perovskite tandem solar cell. The perovskite tandem solar cell includes a top cell, an inorganic functional layer, and the bottom cell stacked sequentially. The top cell includes a perovskite light-absorbing layer disposed on the side of the inorganic functional layer facing away from the bottom cell. The inorganic functional layer and the perovskite light-absorbing layer have different coefficients of thermal expansion. The recycling method includes the following steps: cooling the perovskite tandem solar cell; and heating the cooled perovskite tandem solar cell to peel the perovskite light-absorbing layer off from the inorganic functional layer. Using the recycling method provided in this application, the performance of the bottom cell can be effectively preserved, ensuring its stability during secondary use.

The invention discloses a hybrid expert model pruning method and device and a medium, and the method comprises the steps: collecting a calibration data set through a predetermined data collection module of a hybrid expert model, so as to obtain performance data, and the performance data comprises a gating value and an activation vector; calculating according to the performance data to obtain a significance score corresponding to the hybrid expert model, determining experts needing to be removed according to the significance score, and pruning the hybrid expert model according to the experts needing to be removed; determining a reserved expert according to the pruned hybrid expert model, reconstructing the reserved expert to determine a new expert list, determining a new router, and replacing the hybrid expert model according to the expert list and the router; and storing the replaced hybrid expert model as a new model file, and carrying out iterative pruning on the model file so as to carry out fine tuning on the hybrid expert model. The device is accurate in evaluation, good in performance maintenance, stable in structure and flexible and efficient in pruning mode.

The application discloses a phase change microcapsule composite heat storage material with photocatalytic characteristics and a preparation method thereof. The phase change microcapsule composite heat storage material has a whole core-shell structure, paraffin as a core, crystalline TiO2 with photocatalytic characteristics as a shell wall coated on the surface of the paraffin, and nano-titanium nitride and carbon nanotube composite blended photothermal conversion particles as core-shell modification materials uniformly attached to the surface of the TiO2. The phase change microcapsule composite heat storage material has a stable core-shell structure, full-spectrum solar photothermal conversion capacity, and effectively improves the coating rate, the thermal conductivity and the photocatalytic efficiency, retains the thermal properties of paraffin and inhibits leakage and corrosion.

The invention belongs to the technical field of superconducting, and relates to an insulation enhanced superconducting cable and a preparation method thereof. The method comprises the following steps: firstly, reinforcing a superconducting wire rod through a NiCoCr / Cu composite matrix, and carrying out multi-channel coating and on-line monitoring by adopting BN modified polyimide paint to form a uniform insulating layer; and then wrapping and hot pressing are carried out by using a B-stage epoxy-impregnated aromatic polyamide tape to construct an insulation enhanced structure. Stranded cable forming is carried out through tension control and a numerical control positioning die, and the composite cable is formed by combining the core wire and the multiple layers of insulation reinforced wires. Finally, through secondary wrapping and pretension braiding protection, the superconducting cable with the coverage area larger than or equal to 99.9% and the void ratio smaller than 1% is obtained, the withstand voltage between strands is larger than 5000V, the withstand voltage between cables is larger than 7000V, the mechanical stability and the thermal management performance are remarkably improved, and the superconducting cable is suitable for being applied to high-field magnets and fast pulses.

The application relates to the technical field of high polymer materials, and particularly discloses a bio-based polyether ether ketone as well as a preparation method and application thereof. The bio-based polyether ether ketone is prepared by the following steps: mixing a bio-based diphenol monomer, alkali, 4,4'-difluorobenzophenone, a water-carrying agent and a polar organic solvent, refluxing the water-carrying agent at 30-150 DEG C, evaporating the water-carrying agent at 40-150 DEG C, performing a final polymerization reaction at 150-260 DEG C, and then sequentially performing precipitation, washing and drying to obtain the bio-based polyether ether ketone. The bio-based polyether ether ketone provided by the application uses renewable biomass as a raw material to construct a core molecular structure, retains the core properties of traditional polyether ether ketone, such as high-temperature resistance and chemical corrosion resistance, and optimizes and improves the solubility and processing fluidity.

This application discloses a composite high-flowability, high-conductivity conductive masterbatch and its preparation method, relating to the technical field of conductive materials. The masterbatch uses a fiber-forming polymer as a matrix, compounded with conductive carbon black, graphene, silver nanosheets, carbon nanotubes, and modified MXene nanosheets, along with coupling agents, dispersants, antioxidants, and lubricants. The modified MXene nanosheets are modified with an amino-functionalized modifier and a polysaccharide mixture of sodium alginate and agar. Amino grafting improves interfacial compatibility, while polysaccharide coating inhibits filler agglomeration and oxidation, optimizing the dispersion of the conductive filler in the matrix. This masterbatch constructs a multi-level continuous conductive network, significantly improving melt flowability, conductive stability, and mechanical properties, effectively solving the problems of easy agglomeration, poor flowability, and insufficient spinnability of traditional conductive masterbatches.

The invention relates to a method for decolorizing waste cotton-polyester blended fabric through low-temperature plasma synergistic chemical oxidation. Through the synergistic effect of low-temperature plasma and an acidic chemical oxidant (composed of inorganic acid, hydrogen peroxide, a penetrant and a hydrogen peroxide stabilizer), color development and auxochrome groups of dye on the waste polyester-cotton blended fabric are effectively destroyed, and efficient decolorization of the waste polyester-cotton blended fabric is achieved. According to the technical scheme, the decolorizing efficiency is improved, the original performance of polyester and cotton fibers can be reserved, the secondary utilization performance of the recycled waste polyester-cotton mixed textile fabric is guaranteed, and an effective means is provided for resource utilization of the waste polyester-cotton mixed textile fabric. Compared with a traditional chemical oxidation technology, the method has the advantages that the required acid amount and treatment time are remarkably reduced, the temperature required by the reaction is greatly reduced, the environmental protection performance is remarkably improved, the energy consumption is reduced, and an economic and green new way is provided for recycling the waste polyester-cotton mixed textiles.

The invention relates to the technical field of high polymer materials, and particularly discloses bio-based polyether-ether-ketone as well as a preparation method and application thereof. The preparation method of the bio-based polyether-ether-ketone provided by the invention comprises the following steps: mixing a bio-based diphenol monomer, alkali, 4, 4 '-difluorobenzophenone, a water-carrying agent and a polar organic solvent, refluxing at 30-150 DEG C to carry out water carrying, steaming out the water-carrying agent at 40-150 DEG C, carrying out final polymerization reaction at 150-260 DEG C, and sequentially precipitating, washing and drying to obtain the bio-based polyether-ether-ketone. The bio-based polyether-ether-ketone is obtained. According to the bio-based polyether-ether-ketone provided by the invention, a core molecular structure is constructed by taking renewable biomass as a raw material, the core performance of high temperature resistance and chemical corrosion resistance of traditional polyether-ether-ketone is reserved, and the dissolving property and the processing fluidity are optimized and improved.