37results about How to "Promote mass production" patented technology

The present invention relates to a curing process for a piezoelectric ceramics buzzing sheet in a buzzer. According to the curing process, a metal sheet is placed on a sheet suction mold, the sheet suction mold adsorbs the metal sheet, and silk-screen printing is adopted to print an anaerobic glue onto the upper surface of the metal sheet; a piezoelectric resonance sheet is placed on the metal sheet, and is bonded on the metal sheet through the anaerobic glue; the metal sheet and the piezoelectric resonance sheet bonded on the metal sheet are removed from the sheet suction mold, and are packaged by adopting a vacuum package bag; the vacuum package bag filled with the metal sheet and the piezoelectric resonance sheet is placed in ultra-high hydrostatic hydraulic equipment to carry out pressing curing, wherein the pressure of ultra-high hydrostatic hydraulic pressure is more than or equal to 120 MPa, and a pressure keeping time is 3-5 minutes; and the vacuum package bag is removed from the ultra-high hydrostatic hydraulic equipment, and is unpacked, the metal sheet and the piezoelectric resonance sheet are firmly bonded, and the curing process is completed. According to the present invention, the force applying on the product is uniform, the bonding force is stable and reliable, the curing time is short, the production efficiency is improved, the product is not deformed, and the frequency consistency is good.

The invention discloses a silicene film prepared by mechanical peeling and the application of the obtained silicene film in batteries. The two-dimensional nanomaterials are physically covered on the passivated silicon surface of the metal film. After high-temperature treatment, the silicon element diffuses into the two-dimensional The interface between the nanomaterial and the metal film is lowered to room temperature, and the sample is dispersed in a solvent liquid with a surfactant. Polar molecules are very easy to enter the interface between the metal film and the substrate material, and the metal film and the substrate are increased by ultrasonic stirring. Material friction, peeling two-dimensional nanomaterials and silicene from silicon substrates to obtain silicene films. The present invention utilizes mechanical stripping to peel off the silicene thin layer in the liquid phase through physical action, which protects the physical properties of the silicene material, avoids the working environment of high vacuum and high-risk gas, and avoids highly toxic organic reactants The use of two-dimensional nanomaterials can be used repeatedly, which reduces the cost and has broad market application value in the field of solar cells.

The invention provides a jet device for continuous preparation of graphene and a method thereof. The method includes: mixing a graphite raw material with a medium solution, passing the mixture through a main nozzle for accelerated ejection, impacting and stripping the material with high speed air flow ejected by uniformly distributed convergence nozzles so as to obtain a mixed slurry, finally pumping the mixed slurry into a spray drying chamber by a super high pressure pump, conducting drying treatment to obtain a graphene material, and collecting graphene with a collecting mechanism. The method has low energy consumption, improves the graphene stripping efficiency, employs air flow and liquid flow to strip graphite, and does not introduce grinding medium pollution. The stripped material passes through a homogenizing valve with tiny gap at a high speed, and the generated strong shear force and friction force can homogenize and strip the material. Through further shearing and screening by the homogenizing valve, the graphene stripping efficiency is improved, and at the same time liquid is added in the graphite shear process to serve as the medium, the structure of graphene can be well maintained, thus obtaining high quality graphene, and promoting the mass production of graphene.

The invention provides a method for preparing graphene through composite shear stress stripping of a vibrating screw extruder, and belongs to the field of graphene materials. According to the method, an electromagnetic, ultrasonic and longitudinal mechanical vibration tensile force field is introduced into the extruder rotating at high speed, the vibration tensile force field periodically changes along with the time to enable the graphite interface to be tensioned, graphite becomes loosened under the action of a stripping agent, the graphite generates powerful shearing stripping through contact interfaces of meshing blocks of the extruder in a tensioned state, thinner graphene with the narrower thickness distribution range is obtained, and then rapid and efficient high-quality graphene preparation under the high-shearing action is achieved. The method has the advantages that the production cost of the high-quality graphene is significantly lowered, the preparation process is green and environmentally friendly, no exhaust gas or waste liquid or waste residue is generated, and scale production of the graphene is promoted.

The invention provides a method for preparing graphene from a thermoplastic graphite material, belonging to the field of graphene materials. According to the method, graphite is subjected to thermoplastic treatment, and a hydroxyl-terminated polymer is used for increasing the interlayer spacing of graphite and reducing the interlayer van der Waals force of the graphite, so that the graphite has thermoplastic flowability and flexibility when being processed in a screw extruder, the graphite is thinned through extending by virtue of the shearing stress generated by rotation of a screw, particularly the thinned graphite is sheared and directionally stripped by the screw under the strong shearing action of the screw after a polar high-molecular polymer and the hydroxyl-terminated polymer contained in the thermoplastic graphite are carbonized, and then, the graphene is obtained, so that a graphene layer structure is prevented from being damaged, the crystal lattice integrity of the graphene is better kept, and furthermore high-quality graphene with a large area is obtained. The method for preparing the graphene through carrying out thermoplastic treatment on the graphite and then stripping by using the screw extruder has wider industrial prospects and remarkable market application values and is suitable for large-scale production.

The invention provides a complete device of preparing graphene by a jet flow. A graphite raw material and a medium solution are intensively mixed, primarily stripped and mixed by a high-mixing stirrer, and accelerated by an acceleration pump to enter a spray drying chamber from a jet nozzle; the materials are collided and stripped in the jet nozzle and ejected to enter the spray drying chamber; the solution is evaporated at the high temperature in the drying chamber; a graphene material is obtained; and finally, a collection mechanism collects the graphene. According to a method, the stripping and dispersion of the graphene are achieved in a one-stop manner; the stripping efficiency of the graphene is improved; a structure of the graphene is kept better, so that the high-quality graphene is obtained; at the same time, the problem of poor dispersity of the graphene is solved; and continuous and mass production of the graphene is promoted.

The invention discloses a manufacturing method of a mullite-boron nitride composite ceramic side sealing plate for thin-strip continuous casting. The manufacturing method comprises the following steps: (1) preparing precursor slurry, namely mixing hexagonal boron nitride powder, silicon dioxide powder and aluminum nitrate powder, then adding a slurry preparing solvent to prepare slurry, fully mixing the slurry uniformly, standing for a certain period of time, and finally washing and filtering the slurry by using distilled water of 100-130 DEG C to obtain a filter residue namely the precursor slurry; (2) preparing a mixed batch, namely mixing the precursor slurry, silicon nitride powder, aluminum nitride powder, titanium boride powder and diboron trioxide to prepare the mixed batch; (3) pretreating the mixed batch; and (4) performing hot pressed sintering. The side sealing plate prepared by the method disclosed by the invention is very high in strength, compactness and breaking strength, low in thermal conductivity and good in thermal shock resistance, so that the service life of the side sealing plate is prolonged, and the problem of continuous casting interruption is avoided; and moreover, the use stability of the ceramic side sealing plate is improved, the production cost of thin-strip continuous casting is reduced, and considerable economic benefits are achieved.