64results about How to "Realize large-scale mass production" patented technology

The invention relates to a selective emitter junction and tunneling oxide efficient N-type battery preparation method. The method comprises the steps of: performing texturing after removing a damaged layer of a silicon wafer, forming a boron-doped P+ emitter junction on the front surface, forming a local heavily doped region by means of laser treatment, growing an ultra-thin tunneling oxide layer and a phosphorus-doped silicon thin film on the back surface of the silicon wafer, depositing an aluminium oxide layer on the surface of the P+ emitter junction, growing a hydrogenated silicon nitride passivation antireflection layer on the front surface of the silicon wafer, and finally printing an Ag / Al slurry on the front surface of the silicon wafer. According to the selective emitter junction and tunneling oxide efficient N-type battery preparation method, a metalized ohmic contact structure of Ag or Al is formed on the back surface through metallization, low-temperature annealing is carried out by means of a drying oven, and the contact performance of electrodes is improved. Compared with the prior art, the selective emitter junction and tunneling oxide efficient N-type battery preparation method adopts the selective emitter junction on the front surface as well as the ultra-thin tunneling oxide layer (<4 nm) and the phosphorus-doped silicon thin film on the back surface, thus can significantly reduce the metal-semiconductor surface recombination on the front surface and the back surface, and has the most obvious advantage of being capable of greatly increasing electrical performance parameters on the basis of being compatible with the traditional battery manufacturing process.

The invention relates to a high resistant starch (RS3) content product prepared through autoclaving treatment and enzymatic debranching and a preparation method thereof. The product is prepared by the following method that 1, native starch and water are mixed to obtain starch suspension liquid, autoclaving treatment is performed for 5-48 minutes, and cooling treatment is performed; 2, pH is regulated and enzymatic debranching treatment is performed, or after aging treatment is performed, pH is regulated and debranching treatment is performed; 3, an obtained sample is treated through enzyme deactivation, aging, drying, powder grinding and sieving, and the high resistant starch content product is prepared. The product takes the starch as the raw materials and adopts the method of combining autoclaving treatment and enzymatic debranching, the resistant starch (RS3) content in the obtained product is above 40 percent, the resistant starch content is greatly increased, the production technology is simplified, and the production cost is lowered.

The invention discloses a multi-scale helical structure fiber bundle and a preparation method thereof. Through an electrospinning technique and a twisting and multistrand overtwist method, the preparation method of the multi-scale helical structure fiber bundle succeeds in preparing a series of multi-scale helical structure fiber bundles. The multi-scale helical structure fiber bundles can compound varied materials and integrate varied functions and have excellent intensity, flexibility, stretchability and resilience. Moreover, the diameter and length of the fiber bundles can be controlled, and the fiber bundles can be randomly bent and weaved and have broad application.

The invention discloses a preparation method of artificial stone with imitated wood grain pattern, which comprises the following steps: (1) preparing artificial stone mud materials with at least two different colors, and respectively stirring uniformly; (2) carrying out the following operations in vacuum state: i, conveying the artificial stone mud material with one color in step (1) to a tablet machine, and pressing the mud material into mud tablets by using the tablet machine; laying the artificial stone mud material with another color on the mud tablets, and pressing with the tablet machine; repeatedly laying and pressing the rest of the artificial stone mud materials by using the same method to obtain a wood grain unit mud material lamella; ii, overlapping the mud material layers, molding and pressing to obtain the artificial stone blocks; (3) curing the artificial stone blocks obtained in step ii, and cutting the artificial stone blocks in the direction capable of displaying the laminated grain structure, thereby obtaining the blank pieces; and (4) sanding and polishing the blank pieces in step (3) to obtain the artificial stone product. The product of the invention presents an imitated wood grain pattern.

A method for preparing a Pt / C nanometer catalyst and a device thereof relate to a catalyst and provide a method for preparing the Pt / C nanometer catalyst, the device thereof and the application of the Pt / C nanometer catalyst in the fields of fuel cells, electrosynthesis and the like. The device for preparing the Pt / C nanometer catalyst is provided with an advection pump, a reactor, two electrodes, an electrochemical constant potential rectifier and a product collector; the input end of the advection pump is connected with an inlet for reaction liquid, while the output end thereof is connected with the input end of the reactor; the output end of the reactor is connected with the product collector; the two electrodes are embedded in the reactor; and the reaction liquid flows between the two electrodes which are respectively connected with the electrochemical constant potential rectifier. The distance between the two electrodes of the device for preparing the Pt / C nanometer catalyst is adjusted between 400 and 2000 mu m; square-wave potential processing is executed in running carbon carrier solution, namely, the flow rate of the carbon carrier solution is regulated, a square-wave potential regulation and control electric field is applied between the two electrodes, the product is received and separated, and then the Pt / C nanometer catalyst is obtained.

The invention discloses sweet potato stem leaf polyphenol and a preparation method thereof. The method comprises the following steps: (1) picking fresh sweet potato stem leaves, and washing, drying and crushing the fresh sweet potato stem leaves sequentially to obtain sweet potato stem leaf dry powder; (2) performing ultrasonic extraction on the sweet potato stem leaf dry powder by using an ethanol aqueous solution a, collecting supernate by centrifuging, and removing ethanol to obtain crude extracting liquid of sweet potato stem leaf polyphenol; and (3) adjusting the total phenol concentration and the pH value of the crude extracting liquid of the sweet potato stem leaf polyphenol, pumping into macroporous adsorption resin, washing the macroporous adsorption resin with water after adsorbing, desorbing the macroporous adsorption resin by using an ethanol aqueous solution b, collecting desorption liquid and removing ethanol to obtain the sweet potato stem leaf polyphenol. The sweet potato stem leaf polyphenol and the preparation method thereof have the advantages that reagents, materials, instruments and equipment used in the method are of common specifications, so the method is low in production cost, non-toxic and environment-friendly; and according to the sweet potato stem leaf polyphenol prepared by the method, the polyphenol purity is above 80%, the yield is 2 to 3%, the antioxidant activity of the sweet potato stem leaf polyphenol is strong, and a high commercial application and development value is achieved.

The invention relates to bearing machining equipment, in particular to end surface groove machining forming equipment for bearing inner rings. The machining forming equipment comprises a base, a stand column, a supporting frame, an abrasive wheel distance adjustment mechanism, a power mechanism and a bearing inner ring feeding mechanism. The bearing inner rings are arranged in rhombus structures. A screw adjusting rolling wheel is rotated. A clockwise screw nut and an anticlockwise screw nut move outwards. The rhombus structures contract to clamp and fix the bearing inner rings. A servo motor is started and sequentially drives a worm, a worm wheel, a left-handed screw and a right-handed screw to rotate. The extension angles of first swinging arms and second swinging arms are adjusted. The distance between every two adjacent abrasive wheels is changed. A power motor is started, and the abrasive wheels rotate at high speed to carry out end surface groove machining on the bearing inner rings. The multiple bearing inner rings can be clamped in the machining forming equipment at a time, the production efficiency is high, the machining cost is low, and large-scale volume production can be realized.

A method is provided for producing a highly porous substrate. More particularly, the present invention enables fibers, such as organic, inorganic, glass, ceramic, polymer, or metal fibers, to be combined with binders and additives, and extruded, to form a porous substrate. Depending on the selection of the constituents used to form an extrudable mixture, the present invention enables substrate porosities of about 60% to about 90%, and enables process advantages at other porosities, as well. The extrudable mixture may use a wide variety of fibers and additives, and is adaptable to a wide variety of operating environments and applications. Additives can be selected that form inorganic bonds between overlapping fibers in the extruded substrate that provide enhanced strength and performance of the porous substrate in a variety of applications, such as, for example, filtration and as a host for catalytic processes, such as catalytic converters.

The invention discloses a door pocket capable of being adjusted according to the thickness of a wall. The door pocket is used for wrapping the front surface and the two side surfaces of the wall and comprises a main door pocket, an auxiliary door pocket, an adjusting screw, two door stickers and a wall fixing assembly, wherein one end of the main door pocket is provided with a mounting groove, the other end of the main door pocket is provided with an inserting groove, and a screw hole is formed in the inserting groove; one end of the auxiliary door pocket is provided with a screw hole, the other end of the auxiliary door pocket is provided with a mounting groove, and the screw hole is communicated with the mounting groove; the end of the auxiliary door pocket where the screw hole is formed extends into and matches with the inserting groove at one end of the main door pocket where the screw hole is formed, and the screw hole of the auxiliary door pocket and the main door pocket are coaxial and are threadedly connected with the adjusting screw respectively; the wall fixing assembly is used for fixing the fastened connection between the main door pocket or the auxiliary door pocket and the wall.

The invention discloses an equipment and method for preparing metallic titanium by TiCl4 vacuum glow discharging. The equipment comprises a vacuum chamber, the top of which is communicated with a gas-flow controller and a TiCl4 gasification device through a gasifying pipe, and the bottom of the vacuum chamber is communicated with a gas collector through a chlorine pipe; in the vacuum chamber, a collection electrode and an anode that are insulated from the vacuum chamber are provided; a power supply is connected with the collection electrode and the anode respectively. The method comprises: placing the gasified pure industrial TiCl4 from the gasification device into the vacuum chamber, applying DC voltage to ionize the TiCl4 so as to generate glow plasma, settling the positive Ti ions in the plasma by the electric field onto the surface of a sponge titanium-collecting electrode, and discharging the generated chlorine into the gas collector. The whole process in the invention is under vacuum state, therefore, the purity of the prepared titanium is high, the oxygen content is low, the efficiency is high, and massive production can be realized. The chlorine released in the process is collected and stored by the gas collector, so the invention has no environmental pollution.

The invention belongs to the technical field of atomization pieces, and particularly relates to a production process of an ultrasonic atomization piece. The production process of the ultrasonic atomization piece, disclosed by the invention, comprises the following steps of S1, cutting a pressure thermosetting conductive film to annular shapes having same size with annular piezoelectric ceramic foruse; S2, placing the pressure thermosetting conductive film on a flexible printed circuit (FPC), and then placing the annular piezoelectric ceramic on the pressure thermosetting conductive film, wherein the FPC comprises a round PI thin film and an annular copper foil; S3, placing a red silica gel pad at each of an upper side and a lower side of a product obtained in the step S2, placing the product in a pressure machine, simultaneously heating to 80-150 DEG C by the pressure machine at pressure being 6-15MPa to laminate the product, and continuing for 100-300 seconds; S4, uniformly punchinga plurality of microscale small holes in the central PI thin film of the FPC of the laminated product by a laser machine; and S5, performing energization detection on the product obtained in the S4 toobtain a qualified product.

The invention relates to a multi-degree-of-freedom micro-vibration diagnosis method and sensing terminal. Calculation and observation of settlement and displacement values are realized, and credibility analysis is carried out on the settlement and displacement values obtained by calculating data samples acquired at each acquisition time point, thereby improving the accuracy of an observation result. Through vibration detection and trigger data acquisition including acceleration data, magnetic field data, angle data, positioning data and the like, the sensors are high in collaboration, the datarelevance at the same time is high, and the dynamic change condition of an observation point can be reflected in real time. According to the invention, non-contact sensing, edge calculation, data storage, backup power supply, communication transmission, encryption chips and the like are realized, a wider acquisition frequency can be freely selected, and micro-vibration and magnetic force change can be freely sensed; and the method and the sensing terminal can be applied to different application scenes such as dangerous buildings, ancient buildings, bridges, underground pipe galleries, dams, tunnels and iron towers, and provide powerful support for disaster monitoring and early warning and forecasting in China.

The invention designs a polyimide diamine monomer C16-FBDA with an innovative structure. According to the invention, the simultaneous introduction of C16 side chain alkyl, trifluoromethyl, an imide group and multiple benzene ring structures in the molecular structure is achieved, so that the regularity and the crystallinity of the polymer molecular chain are broken through, the free volume of thepolymer is increased, and the interaction between the molecular chains is reduced so as to substantially improve the film-forming property and the optical transparency of polyimide; and in C16-FBDA synthesis, the invention provides an industrially applicable C16-FBDA production process, which has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simple operation and environmental friendliness, is suitable for large-scale mass production, and has extremely high industrial application value.

The invention discloses a preparation method of a locally doped solar cell. The preparation method comprises the steps of 1) prearranging and drying doping slurry: prearranging the doping slurry in aposition where a film is to be opened, contacting the doping slurry with a silicon base layer, and carrying out drying; 2) depositing a dielectric passivation film layer on the back surface of the silicon base layer; 3) carrying out laser ablation: carrying out ablation on the dielectric passivation film layer in a metallization region on the back surface of the silicon base layer by laser in a position as same as that of prearranging the doping slurry in the step 1); and 4) carrying out metallization: preparing a metal electrode through a metallization process. The invention provides the locally doped solar cell and the preparation method thereof. Before the dielectric passivation film layer is deposited on the back surface, the doping slurry is prearranged in the metallization region onthe back surface; and when the laser ablation is carried out on the dielectric passivation film layer, the prearranged doping slurry is pushed into the silicon base layer by utilizing energy of the laser, so that the heavy doping and depth of the metallization region are realized, and the composite current of the metallization region on the back surface of the silicon base layer is reduced; and the large-scale production is realized.

The invention relates to the technical field of fine dried noodle production, and discloses an automatic control system for manual hollow fine dried noodle, which comprises a discharging control system, a conveying belt control system, a chain control system, a noodle cutting and packaging control system and a central control system. The discharging control system comprises a stirrer system, a discharging conveying belt, a water maker, a water storage tank, a water supply metering pump and a hemispherical dough kneading and fermenting device; the conveying belt control system comprises an integrated strip cutting and coiling machine system, a conveying belt system, an integrated strip twisting and coiling machine system and an intelligent operation robot system. According to the invention, intelligent equipment is used for replacing manpower, large-scale mass production can be achieved, the production process is still a fermenting stretching process substantially, production through an automatic control system is more standard, sanitary and healthy, and if automatic control production is used, the production time is short and generally needs 7-8 hours, and the adding amount of table salt is small, 24-hour of uninterrupted production can be achieved, and human health is better facilitated.

The invention belongs to the technical field of hydrogen production through water photolysis, and particularly relates to a photocatalyst, a preparation method thereof and a method for producing hydrogen through water photolysis. The photocatalyst provided by the invention comprises a first semiconductor nanosheet, a two-dimensional carbon nanomaterial loaded on the first semiconductor nanosheet, and a second semiconductor nanosheet loaded on the two-dimensional carbon nanomaterial. In the provided photocatalyst, the first semiconductor nanosheet is used as a main catalyst, the second semiconductor nanosheet can be used as a cocatalyst, and the two-dimensional carbon nanomaterial is a conductive material with a sheet structure and can be used as a bridge for connecting and conducting the main catalyst and the cocatalyst, so that the migration and separation efficiency of photo-induced electron-hole pairs is improved; and internal recombination of photo-induced electron-hole pairs is weakened, so that the utilization rate of photo-induced electrons is greatly improved, and the photocatalyst has high photocatalytic hydrogen production activity and good stability.

The invention relates to a crayfish soaking and cleaning machine. The crayfish soaking and cleaning machine comprises a cleaning workbench, a loading workbench, a first belly cleaning device, a secondbelly cleaning device, a soaking workbench, multiple loading plates for loading crayfishes and multiple cylinder-shaped containing cylinders for containing the crayfishes, wherein the cleaning workbench is provided with a rotating disc and a rotation driving servo motor; eight fixing clamps for detachably installing the loading plates are evenly fixed on the edge of the rotating disc; a containing workbench, a cleaning pond, an air drying cover and a soaking pond are sequentially distributed on the soaking workbench from right to left; a rail frame transversely penetrates through the air drying cover, a transverse driving lifting device capable of loading the containing cylinders to conduct transverse reciprocating rectilinear movement and driving the containing cylinders to be lifted isalso fixed on the rail frame, and grippers for grabbing or putting down the containing cylinders are fixed on the transverse driving device. By means of the crayfish soaking and cleaning machine, theprocessing production efficiency of drunken crayfishes can be improved, labor is saved, and large-scale batch production of the drunken crayfishes can be achieved.

The invention discloses an equipment and method for preparing metallic titanium by TiCl4 vacuum glow discharging. The equipment comprises a vacuum chamber, the top of which is communicated with a gas-flow controller and a TiCl4 gasification device through a gasifying pipe, and the bottom of the vacuum chamber is communicated with a gas collector through a chlorine pipe; in the vacuum chamber, a collection electrode and an anode that are insulated from the vacuum chamber are provided; a power supply is connected with the collection electrode and the anode respectively. The method comprises: placing the gasified pure industrial TiCl4 from the gasification device into the vacuum chamber, applying DC voltage to ionize the TiCl4 so as to generate glow plasma, settling the positive Ti ions in the plasma by the electric field onto the surface of a sponge titanium-collecting electrode, and discharging the generated chlorine into the gas collector. The whole process in the invention is under vacuum state, therefore, the purity of the prepared titanium is high, the oxygen content is low, the efficiency is high, and massive production can be realized. The chlorine released in the process is collected and stored by the gas collector, so the invention has no environmental pollution.

The invention discloses a sweet potato extract as well as a preparation method and application thereof. The preparation method of the sweet potato extract comprises the following steps: 1) cleaning, draining, slicing and drying sweet potatoes, and grinding the sweet potatoes so as to obtain sweet potato powder; 2) extracting the sweet potato powder by taking a mixed solution of chloroform and methanol as an extracting agent; 3) dissolving a coarse sweet potato extract in the mixed solution of chloroform and methanol; then implementing solid-phase extraction and separation on an obtained coarse sweet potato extract solution by taking chloroform and acetone as eluents, and collecting an acetone elution component; and 4) implementing adsorption chromatography on the acetone elution component by virtue of a chromatographic column which uses macroporous adsorption resin as an adsorbent, sequentially eluting the elution component through water as well as ethanol solutions which are 20-40%, 50-60% and 70-80% in volume percentage, and collecting an elution component of the ethanol solution which is 70-80% in volume percentage so as to obtain the sweet potato extract. Pharmacodynamic tests show that the sweet potato extract has a relatively strong proliferation inhibiting capacity on colon cancer cells, breast cancer cells and the like.

The invention designs a polyimide diamine monomer C12-FBDA with an innovative structure. The simultaneous introduction of C12 side-chain alkyl, trifluoromethyl, an imide group and multiple benzene ring structures is realized in the molecular structure, the regularity and crystallinity of polymer molecular chains are broken through, the free volume of the polymer is increased, and the interaction between the molecular chains is reduced, so that the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of C12-FBDA synthesis, the invention develops an industrially applicable C12-FBDA production process, and the process has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simple operation, environmental friendliness, complete realization of large-scale mass production, and extremely high industrial application value.

The invention designs a polyimide diamine monomer C14-FBDA with an innovative structure. Simultaneous introduction of C14 side chain alkyl, trifluoromethyl, imide group and multiple benzene ring structures into the molecular structure is realized. According to the polyimide diamine monomer, the regularity and crystallinity of polymer molecular chains are broken through, the free volume of the polymer is increased, and the interaction between the molecular chains is reduced, so that the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of C14-FBDA synthesis, the invention develops an industrially applicable C14-FBDA production process, and the process has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simple operation, environmental friendliness, complete realization of large-scale mass production, and extremely high industrial application value.

The invention discloses a full-automatic loading chip mounter for metal carrier inductors, which comprises a vibration feeding disc, a material distribution device, a stacking turntable, an aluminum strip feeding device, a loading chip mounting device, a silicon coating device and a material receiving device, and is characterized in that automatic feeding is realized through the vibration feeding disc, and one-by-one clamping of the inductors is realized through the material distribution device; according to the all-in-one machine, the stacking turntable is arranged on the rack and is matched with the stacking turntable to move inductors to the chip loading device one by one for chip loading, then silicon oil is applied in batches through the silicon coating device, and finally, automatic collection is performed through the material receiving device, so that the all-in-one machine realizes the operation of two working procedures of full-automatic chip loading and silicon coating, the working efficiency is greatly improved, and the labor intensity of workers is reduced. And the inductor loaded with the patch lays a foundation for batch operation of subsequent procedures, so that the whole production procedure of the inductor is simpler, more convenient and easier, the production efficiency of the inductor is greatly improved, and large-scale batch production is realized.

The invention designs a polyimide diamine monomer C5-FBDA with an innovative structure. C5 side chain alkyl, trifluoromethyl, imide groups and a plurality of benzene ring structures are introduced simultaneously in the molecular structure of the polyimide diamine monomer, the regularity and crystallinity of polymer molecular chains are broken through, the free volume of the polymer is increased, the interaction between the molecular chains is reduced, and the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of synthesis of C5-FBDA, the invention develops an industrially applicable production process of C5-FBDA, and the process is short in synthesis route, high in yield, cheap and easily available in used raw materials, relatively low in production cost, simple and convenient to operate, environment-friendly, capable of completely realizing large-scale mass production and extremely high in industrial application value.

The invention designs a polyimide diamine monomer C8-FBDA with an innovative structure. According to the invention, C8 side chain alkyl, trifluoromethyl, an imide group and a plurality of benzene ringstructures are simultaneously introduced into the molecular structure of the polyimide diamine monomer, so the regularity and crystallinity of a polymer molecular chain are broken; the free volume ofa polymer is increased; the interaction between molecular chains is reduced; and the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of synthesis of the C8-FBDA, an industrially applicable C8-FBDA production process is developed; and the production process is short in synthesis route, high in yield, cheap and easily available in used raw materials,low in production cost, simple and convenient to operate, friendly to the environment, capable of completely realizing large-scale mass production and extremely high in industrial application value.

The invention designs a polyimide diamine monomer C11-FBDA with an innovative structure. Simultaneous introduction of C11 side chain alkyl, trifluoromethyl and imido groups and multiple benzene ring structures is realized in the molecular structure, the regularity and crystallinity of a polymer molecular chains are broken through, the free volume of the polymer is increased, and the interaction between the molecular chains is reduced, so that the film-forming property and optical transparency of polyimide are greatly improved. In the aspect of C11-FBDA synthesis, an industrially applicable C11-FBDA production process is developed in the invention, and the process has the advantages of short synthesis route, high yield, cheap and easily available used raw materials, low production cost, simplicity in operation, environmental friendliness, complete realization of large-scale mass production, and extremely high industrial application value.

The invention relates to a high-resistant-starch-content product prepared by ultrahigh-pressure coordinated enzyme and a preparation method of the product. The preparation method includes: 1), mixing starch with distilled water to obtain starch suspension, and performing ultrahigh pressure treatment; 2), cooling, adjusting pH, and adding enzyme for debranching; or aging after cooling, adjusting pH, and adding enzyme for debranching; 3), subjecting a sample to enzyme deactivation, aging, drying and grinding to obtain the product. Currently, starched modified products with functional or healthcare effect are still few in type on the market; the modified starch product is high in resistant-starch content and can be expected to be added into low-sugar food that diabetic patients can eat to play a role in assisted treatment or regulating blood sugar.

A gelatin-calcium alginate core-shell structure sustained release microsphere loaded with bone morphogenetic protein (BMP) sequentially comprises an inner core layer and an outer wrapping layer from interior to exterior. The inner core layer is mainly composed of gelatin microspheres on which BMP is evenly dispersed, and the outer wrapping layer wrapping the inner core layer is mainly made of calcium alginate. The preparation of the sustained release microsphere comprises two modes. The first mode is that firstly, blank gelatin microspheres are prepared and then mixed with the calcium alginate to prepare a gelatin / sodium alginate blank core-shell structure sustained release microsphere, finally, the BMP is added, and the gelatin-calcium alginate core-shell structure sustained release microsphere loaded with the BMP is obtained. The second mode is that firstly, gelatin microspheres loaded with BMP are prepared and then mixed with sodium alginate to obtain the gelatin-calcium alginate core-shell structure sustained release microsphere loaded with the BMP. The product has the advantages that the sustained release effect is good, the side effect is slight, the cost is low, and no toxic or side effect is caused.