4results about How to "Significant performance improvement" patented technology

The invention relates to the field of text classification methods, in particular to a text classification method fusing a mobile flip bottleneck convolution network and a capsule network of an adaptive feature channel, the text classification method is realized through an MBConv-CapsNet model, and the MBConv-CapsNet model comprises a mobile flip bottleneck convolution module used for preprocessing a text matrix and obtaining a mobile flip bottleneck convolution model; comprising a standard convolution layer, a channel-by-channel convolution layer, an SE network layer and a point-by-point convolution layer. The improved capsule network module is used for the text classification process and comprises an N-gram convolution layer, a selective kernel network layer, a main capsule layer, a convolution capsule layer and a full-connection capsule layer, sequence information, word vectors and a context dependency relationship of the text can be fully considered, local and global information of the text can be captured more effectively, and the text classification efficiency is improved. And the influence of noise and redundant information is reduced, and an original text matrix is converted into more compact and more representative feature representation.

The invention relates to a polyarylether nitrile-based film material for a flexible copper-clad laminate and a preparation method thereof. The polyarylether nitrile polymer is synthesized by a nucleophilic substitution reaction, a polyarylether nitrile / silicon dioxide composite film and a polyarylether nitrile / polytetrafluoroethylene composite film are prepared by combining a solution casting method, and a film material for a flexible copper-clad laminate having a sandwich structure is prepared by hot pressing to improve the comprehensive performance of a substrate film for the flexible copper-clad laminate. Finally, a polyarylether nitrile-based film material for a flexible copper-clad laminate having high peel strength, low dielectric loss and dielectric constant, low thermal expansion coefficient and high tensile strength is obtained. The preparation process is simple, the effect is obvious, and the material can be mass-produced and applied.

The application discloses a preparation method and application of a graphene modified three-layer composite weather-resistant garden floor, and belongs to the technical field of building materials. The floor comprises, from top to bottom, a graphene reinforced wear-resistant decorative layer, a graphene modified wood-plastic composite base layer and a graphene moisture-proof balance bottom layer. The floor has excellent weather resistance, water resistance, wear resistance, ultraviolet aging resistance, slip resistance and size stability, and also has good mildew resistance and antibacterial performance. In terms of weather resistance, the bending strength retention rate after 300h xenon lamp aging is over 90%. In terms of slip safety, the wet-state slip coefficient is 0.68-0.75, far exceeding the compulsory safety standard of garden walkways. In terms of mildew resistance and antibacterial performance, the antibacterial rate is greater than or equal to 99%, and the mildew resistance grade is 0, thereby avoiding problems such as mildew and blackening on the surface of the floor. The floor is suitable for ground paving of outdoor garden landscape places such as parks, scenic spots, courtyards and waterfront walkways.

The present invention relates to the technical field of high-temperature energy storage dielectric films, and discloses a preparation method of a porphyrin cross-linker modified polyimide high-temperature energy storage dielectric film. Polyamic acid (PAA) precursor is obtained by condensing 4,4'-diaminodiphenyl ether (ODA) and pyromellitic dianhydride (PMDA), and introducing ultra-low content of 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP) as a cross-linker. Cross-linked polyimide film (PCPI) is prepared by solution coating and gradient thermal imidization. The terminal amino groups of TAPP molecules form a covalent cross-linking network with PAA, and the porphyrin macrocycle π-conjugated system provides deep-level charge traps, significantly inhibiting high-temperature carrier migration. The breakdown strength of the optimal sample PCPI-0.1 reaches 475 MV / m at 200 °C, and the discharge energy density is 4.97 J / cm 3 , the charge-discharge efficiency is ≥85%. At the same time, it has a high glass transition temperature, high thermal stability, excellent cycle stability and film-forming uniformity. The solution coating process is simple to prepare, and the process conditions are simple and controllable, which is suitable for the batch production of high-temperature and high-energy storage polyimide dielectric films.