12results about How to "Composite tight" patented technology

The invention provides a dry-method electrode film and a preparation method thereof, a dry-method electrode and a battery, and particularly relates to the technical field of secondary batteries. The dry-method electrode film comprises an active material, a conductive agent and a binder, the binder comprises a first binder and a second binder; the first binder is polytetrafluoroethylene; and the melting point of the second binder is less than 120 DEG C. A second binder is introduced in the electrode material mixing process, heat energy generated by mechanical mixing can soften the second binder, small particles are bonded together, the surface energy of the electrode material is improved, the agglomeration or mixing behavior of the electrode particles in the dry mixing process is driven, and a dry-method membrane with high strength and high adhesive force with a current collector is formed; and on the other hand, the second binder can be softened at a relatively low temperature in the hot-pressing compounding process of the current collector, and is compounded with the current collector more tightly, so that the peel strength between the electrode film and the current collector is optimized, and the cycling stability and the electrochemical performance of the battery are improved.

The utility model relates to the technical field of automobile seat fabric processing, and discloses an automobile seat fabric compounding device which comprises a processing table, the right end of the processing table is fixedly connected with a bonding mechanism, and the top of the bonding mechanism is fixedly connected with an adjusting mechanism; the bonding mechanism comprises a motor, the motor is fixedly connected to the right end of the machining table, one end of the motor is fixedly connected with a lead screw, the surface of the lead screw is in threaded connection with a threaded block, the left side and the right side of the threaded block are fixedly connected with supporting blocks correspondingly, and long rods are slidably connected into the supporting blocks. The top of the threaded block and the top of the supporting block are fixedly connected with a U-shaped frame. According to the automobile seat fabric compounding device, the flattening rods extrude fabrics, so that air possibly existing between the fabrics is exhausted, the phenomena of gaps and bumps between multiple layers of fabrics are avoided, glue in the fabrics is uniformly distributed, the fabrics are bonded more tightly, and the compounding forming quality of the automobile seat fabrics is improved.

The invention provides a double-layer pressure-bearing pipe and a preparation method thereof, and belongs to the technical field of pipes, and the preparation method comprises the following steps: carrying out infiltration surface treatment on continuous glass fiber bundles and pretreated basalt fibers in a composite coupling agent ethanol solution, carrying out vacuum drying, uniformly mixing with molten high-density polyethylene, and pressing into a glass fiber / basalt fiber composite belt; the preparation method comprises the following steps: mixing and stirring molten-state high-density polyethylene and modified hollow glass microspheres to prepare an HGM / HDPE composite material, extruding to prepare an inner-layer pipe blank, winding a glass fiber / basalt fiber composite belt on the inner-layer pipe blank, and compounding at 380-400 DEG C to prepare a composite inner-layer pipe; preheated epoxy resin and other auxiliaries are mixed and stirred, the amination-modified SiO2 / CeO2 composite filler is added, high-speed stirring and uniform mixing are performed, the mixture is sprayed to the outer surface of the composite inner layer pipe to form an outer protection layer, high-temperature curing is performed, and the double-layer pressure-bearing pipe is prepared. The bearing strength can be improved, and meanwhile durability and corrosion resistance are achieved.

The application relates to the technical field of composite materials, and discloses a preparation method of a multilayer composite core body, which comprises the following steps: pretreatment, spraying treatment, core composite material preparation, compounding and curing forming; the surface of a fiber base layer is chemically modified through functional pretreatment, the wettability and reactivity of the fiber surface are improved, the different fiber layers with different functional characteristics can be more closely and stably combined, and therefore the integrity, reliability and durability of the multilayer composite core body structure are enhanced; through spraying treatment, functional particles are uniformly loaded on the surface of the fiber base layer in the form of a stable dispersion liquid; the functional particles have good compatibility and bonding force with the fiber base and the interlayer composite material after being treated and surface-modified in a specific manner, the core body is endowed with specific surface functions, the interface bonding between the fiber and the base is enhanced, and the functionality, uniformity and structural strength of the core body are improved.

The utility model relates to an integrated automatic compaction device for foam glass veneering product production, and relates to the technical field of foam glass veneering product production equipment.The integrated automatic compaction device comprises a conveying belt used for conveying primarily-compounded foam glass plates, a supporting frame is erected above the conveying belt, and a lower pressing plate is arranged in the supporting frame; the supporting frame is provided with a driving piece used for driving the downward pressing plate to ascend or press downwards, the supporting frame is provided with an infrared sensor and a controller, and the infrared sensor is used for sensing the position of the primarily-compounded foam glass plate on the conveying belt. The controller is electrically connected with the infrared sensor, the driving piece and the conveying belt. The method has the effect of reducing the quality problem caused by unstable force application of manual veneering.

The present invention discloses a glue-applying composite device for producing adult nursing pads, and the present invention relates to the technical field of adult nursing pad production. The present invention comprises a pressing block, the top of the pressing block is fixedly connected to the end of a pressing telescopic rod, the end of the pressing telescopic rod away from the pressing block is fixedly connected to the side of the first groove plate close to the pressing block, the supporting assembly is fixedly connected to the surface of the side plate, and the gluing assembly is fixedly connected to the side of the side plate away from the bottom plate. By infiltrating the glue into the surface layer and the bottom layer during pressing, the glue is fully in contact with the surface layer and the bottom layer, so that the two are more closely composited. Compared with brushing glue at the interval between the surface layer and the bottom layer and then pressing, the operation of brushing glue is reduced, and the glue is avoided from solidifying when the glue is brushed and continued to be pressed, thereby ensuring the bonding effect, and by applying pressure to make the glue fully penetrate the two, a better composite effect can be achieved, so that the product is not easy to separate.

The invention provides a carbon fiber filament, graphene and polymer compounded gas diffusion layer as well as a preparation method and application thereof, and relates to the technical field of hydrogen energy and fuel cells. The preparation method of the gas diffusion layer comprises the following steps: spreading a carbon fiber bundle to obtain carbon fibers, and then winding the carbon fibers on a substrate longitudinally and transversely alternately to obtain a carbon fiber layer preform; mixing graphene with a high polymer material to form a substrate layer graphene slurry; mixing carbon black, graphene powder, a hydrophobic binder and a solvent to obtain microporous layer slurry; coating the two sides of the carbon fiber layer preform with the substrate layer graphene slurry, performing hot rolling or hot pressure maintaining after drying, and performing high-temperature carbonization in inert gas to obtain a substrate layer; the surface of one side of the substrate layer is coated with the microporous layer slurry, the gas diffusion layer is obtained through drying, the gas diffusion layer has the good mechanical property, low resistivity, high porosity and good hydrophobicity, the preparation process is simple, the quality is controllable, and batch production can be achieved.

This invention provides a stainless steel composite plate and its preparation method, belonging to the field of metallurgical process technology. The stainless steel composite plate includes a substrate and a composite material, which are stacked. A plurality of air guide grooves are provided on the side of the substrate facing the composite material. These air guide grooves are areas on the substrate for bonding with the composite material and extend along the length of the substrate. The air guide grooves converge at one end, and a vertical hole is provided on the substrate at the converging end of the air guide grooves, communicating with the air guide grooves through the vertical hole. A horizontal hole is provided on the end face of the substrate, communicating with the vertical hole, and the exposed end of the horizontal hole is adapted to communicate with a vacuum extraction device. By providing air guide grooves on the bonding surface of the substrate for bonding with the composite material, the stainless steel composite plate of this invention can improve the vacuum extraction effect and ensure the vacuum degree between the two plates during vacuum extraction.

The utility model discloses a high-definition four-side glue-free composite embossing structure, which relates to the technical field of household paper embossing equipment and comprises a composite flat roller and a composite embossing roller, a paper inlet is formed above the composite flat roller and the composite embossing roller, roller surfaces of the two rollers are attached to form an embossing area, and paper enters the embossing area from the paper inlet and is oppositely pressed by the two roller surfaces to form patterns; wherein point-shaped bosses, strip-shaped bosses and pattern bosses are arranged on the composite flower roller, the strip-shaped bosses are arranged in a surrounding mode to form a four-side enclosure area, protruding point-shaped overlock bosses are arranged on the surfaces of the point-shaped bosses, the strip-shaped bosses and the pattern bosses, and the width of the point-shaped overlock bosses ranges from 0.1 mm to 0.4 mm. According to the high-definition four-edge glue-free composite embossing structure, the dot-shaped edge locking bosses are additionally arranged on the bosses of the composite embossing roller, the composite pressure is increased through the dot-shaped edge locking bosses in the embossing process, the paper composite firmness is improved, paper is composited more tightly, meanwhile, paper patterns are more stereoscopic and clearer, and the visual impression of the paper is improved.

The invention discloses a preparation method of a near-infrared laser sensitive composite energetic material, which adopts a solid-liquid system in-situ growth technology to enable nano-silver particles to grow on the surface of an HMXR crystal through an in-situ growth process. The HMXR-based photosensitive composite energetic material is prepared on the basis of in-situ growth of nano Ag particles on the surface of a crystal in cooperation with a photosensitive conductive polymer poly-o-phenylenediamine. The preparation method has the beneficial effects that the near-infrared laser sensitivity and the sensitivity performance of the HMXR-based composite energetic material are improved; the light sensitivity is improved, the mechanical sensitivity is reduced, and the laser ignition performance of the composite energetic material is improved; the method can be expanded to design and preparation of water-insoluble energetic matrix photosensitive composite energetic materials such as RDX, CL-20 and the like.

The present invention provides a dry electrode film and a preparation method thereof, a dry electrode and a battery, and specifically relates to the technical field of secondary batteries. The dry electrode film includes an active material, a conductive agent and a binder; the binder includes a first binder and a second binder; the first binder is polytetrafluoroethylene; the melting point of the second binder is less than 120°C. The introduction of the second binder during the mixing process of the electrode material, the heat energy generated by the mechanical mixing can soften the second binder, bond the small particles together, improve the surface energy of the electrode material, drive the agglomeration or mixing behavior of the electrode particles during the dry mixing process, and form a high-strength dry film with high adhesion to the current collector; on the other hand, the second binder can soften at a lower temperature during the hot pressing composite current collector process, and is more tightly composited with the current collector, which optimizes the peeling strength between the electrode film and the current collector, and improves the cycle stability and electrochemical performance of the battery.

The invention belongs to the technical field of packaging materials, and particularly relates to a drop-resistant recyclable MDOPE sterile packaging bag and a preparation method thereof. The composite film is formed by sequentially compounding an MDOPE film, a VMBOPE film and a PE film. Wherein the MDOPE film is formed by co-extruding an inner layer, a middle layer and an outer layer which are sequentially connected, the PE film is formed by co-extruding a first layer, a second layer and a third layer, and the VMBOPE film is prepared from a BOPE film through a vacuum aluminum plating process. The prepared packaging bag has good falling resistance and antibacterial performance; and meanwhile, the single material of the membrane material is realized in the preparation process of the sterile packaging bag, so that waste materials are convenient to recycle and reuse, and environmental protection is facilitated.