31results about How to "Manufacturing flexibility" patented technology

The invention discloses a preparation method of a soft robot with a programmable magnetization profile, which comprises the following steps: mixing and stirring an A part solution and a B part solution of Ecoflex 00-10to obtain a silicone rubber solution; mixing the magnetic powder with a silicone rubber solution to obtain a magnetic mixed solution; defoaming the magnetic mixed solution, pouring the defoamed magnetic mixed solution into a mold, carrying out magnetization, solidification and demolding treatment to obtain a plurality of magnetic modules, and storing the magnetic modules in a module library; cutting a silica gel film according to the appearance of the designed robot to obtain a profiling substrate matched with the robot in size; and the silica gel films are laid on the horizontal plane, a plurality of magnetic modules are taken, the magnetic modules are laid on the silica gel films according to the shapes of the silica gel films, the silica gel films are pressed to make full contact with and adhere to the silica gel films, and the soft robot is obtained. According to the invention, the robot is endowed with reconfiguration capability and magnetization profile reprogramming capability, and the method has the advantages of short manufacturing period, simple manufacturing process, low material consumption and the like.

The invention discloses a modular construction method suitable for coil heat exchangers for boilers of various models. The modular construction method comprises the following steps that a packaging frame of the coil heat exchanger is designed and manufactured, modular manufacturing of the coil heat exchanger is conducted, a combined hoisting tool is installed, and modular installation of the coil heat exchanger is conducted. The modular construction method is suitable for integral manufacturing, transportation and turnover hoisting of coil heat exchangers for boilers of various models, effectively solves the problem that a large coil heat exchanger is inconvenient to turn over and hoist, assemble a suspender at high altitude, weld a header at high altitude and test pressure, optimizes the construction process, saves the cost, and effectively improves the construction safety.

The powder-liquid mixing bin comprises a tank body provided with an annular partition bin and a first liquid inlet, the annular partition bin comprises an outer peripheral wall and a conical inner peripheral wall which are sleeved with each other, the first liquid inlet is formed in the outer peripheral wall, and a discharging opening is formed in the middle of the upper side of the conical inner peripheral wall and is higher than the upper end face of the conical inner peripheral wall; an outlet is formed in the lower end of the conical inner peripheral wall and connected with a top inlet of a tee joint, an axial inlet of the tee joint serves as a second liquid inlet, and an axial outlet of the tee joint is used for being connected with a mixing pump; liquid entering from the first liquid inlet fills the annular gap between the outer peripheral wall and the conical inner peripheral wall and overflows into the conical inner peripheral wall through the upper end face of the conical inner peripheral wall, so that a circular-truncated-cone-shaped concave part is formed, and powder falls into the circular-truncated-cone-shaped concave part to form a primary mixture; liquid enters the second liquid inlet to take away the primary mixture and convey the primary mixture outwards; the powder-liquid mixing bin achieves the purpose of mixing and is beneficial to mixing and miniaturization at the same time.

The invention relates to a method for preparing a nanoscale noble metal catalyst through cyanide-free electroplating and application of the nanoscale noble metal catalyst in electrocatalytic reduction of carbon dioxide, and belongs to the technical field of preparation and application of noble metal catalysts. The method comprises the following steps: by taking a noble metal electrode as an anode, an organic composite electrolyte as an electroplating solution and a conductive material as a cathode, inserting the anode and the cathode into the electroplating solution of a single-chamber electrolytic tank at room temperature; constant-voltage electrolysis is carried out under the condition that the cell voltage is 0.5-3.0 V, so that the precious metal is subjected to an oxidation reaction on the anode to generate precious metal ions Men +, the precious metal ions Men + and the ligand form complex precious metal ions, and the precious metal ions Men + and the complex precious metal ions penetrate through the organic composite electrolyte; and the nano-scale noble metal is reduced into nano-scale noble metal at the cathode and is deposited on the surface of the cathode to form the nano-scale noble metal catalyst composite electrode. When the nanoscale noble metal catalyst composite electrode is used as a catalyst for carbon dioxide electroreduction, the current density exceeds 120mA. Cm <-2 >, and the Faraday efficiency of carbon monoxide exceeds 82%.

The invention discloses a high-strength anti-steam oxidation coating material and a coating, a preparation method and application thereof, and belongs to the technical field of corrosion prevention of inner walls of through-flow components of thermal power generating units. The high-strength steam oxidation-resistant coating material disclosed by the invention is composed of the solid-phase component and the liquid-phase component, and all the components play a synergistic role, so that the steam oxidation resistance of a coating is improved, and meanwhile, the mechanical property of the coating is enhanced, so that the coating is prevented from cracking in the service process, and the service life of the coating is prolonged. The problem that an existing coating cracks in a high-temperature environment is solved.

The invention relates to the technical field of semiconductor device preparation, and discloses a silicon-based heterogeneous device monolithic integration method and a silicon-based heterogeneous device monolithic, and the method comprises the steps: depositing a dielectric material on the surface of a silicon substrate, forming an isolation groove above an N well and a P well, and forming an epitaxial lamination in the groove; depositing a hard mask layer and carrying out graphical process treatment, forming a reserved mask layer above the epitaxial lamination layer, and then preparing two different types of vertical devices in the isolation groove; depositing a dielectric material in the isolation groove, and exposing the surface of the vertical device in an external environment by adopting a sinking process; hKMG deposition and graphical process processing are carried out on the surface of the vertical device to form a high-K metal gate, then interlayer dielectric deposition is carried out to form an interlayer dielectric layer, through hole etching is carried out on the interlayer dielectric layer, and conductive metal is filled to form a silicon-based heterogeneous device single chip. According to the method, high-density integration of different types of vertical devices is realized, and the performance, the reliability and the integration degree of the device are remarkably improved.

A ferroelectric nematic liquid crystal molecule and its application, relating to the technical field of optoelectronic materials, solves the problems of narrow phase transition temperature range, poor room temperature stability and difficulty in achieving ferroelectricity of traditional liquid crystal molecules due to symmetry restrictions in ferroelectric liquid crystal materials in the prior art. The ferroelectric nematic liquid crystal molecules ETA094 and ETB095 prepared by the present invention present a "V"-shaped liquid crystal molecular structure, and polar molecules are connected at the end groups of the "V"-shaped molecular structure. This structure breaks through the limitations of the symmetrical structure of traditional rod-shaped liquid crystal molecules, so that the molecules present chirality and have unique ferroelectricity, and make the intermolecular forces stronger, making it easier to form a liquid crystal phase with fluidity. The nematic ferroelectric liquid crystal molecules prepared by the present invention can achieve an ultra-wide phase transition temperature of ‑100°C to 250°C, and are high-performance ferroelectric liquid crystal materials with high spontaneous polarization intensity and strong nonlinear optical response, and have broad application prospects.

The invention relates to a manufacturing system (1) for manufacturing a component and to a method for manufacturing a component. The manufacturing system has a production device (10) which is designed to carry out an additive manufacturing process for manufacturing a component on the basis of process target data (P, P '); at least one data acquisition device (20) which is designed to acquire field data (F) which characterizes the manufactured component and / or the carried-out manufacturing process; at least one data processing device (30), which is designed to evaluate the field data (F) and to generate optimized development data (E ') and / or optimized process target data (P') using the field data (F), the manufacturing system (1) being designed to be self-regulating, whereby the production data (E ') and / or the process target data (P') are optimized. The optimized process target data (P ') is used to produce further components by means of the production plant (10).

The invention relates to the technical field of die-casting processes, in particular to an ultrasonic-based directional crystallization induction device and a directional crystallization induction method.The ultrasonic-based directional crystallization induction device comprises a die provided with a cavity used for loading a to-be-formed metal material; the pressing block is arranged at the top of the cavity; the first ultrasonic vibrator is arranged on the pressing block; the second ultrasonic vibrator is inserted into the cavity along the side face of the mold and makes contact with the metal material to be formed in the cavity. The controller is connected with the first ultrasonic vibrator and the second ultrasonic vibrator and used for adjusting working parameters of the ultrasonic vibrators, and the directional crystallization induction device based on ultrasound can accurately measure the temperature of a target device in the outer shell, can effectively protect the temperature measuring bag and has the advantage of being simple in structure.

The invention relates to the technical field of electromagnetic wires, and discloses a preparation process of a PEEK composite insulated electromagnetic wire, wherein the electromagnetic wire adopts a mixed composite of nano-silicon dioxide hyperbranched polyester and polyetheretherketone (PEEK) as an insulating material, and the synergistic effect of the two materials is exerted through the design of a three-layer insulation structure. The preparation process sequentially coats three layers of insulation: the first layer and the third layer are nano-silicon dioxide hyperbranched polyester / PEEK mixed layers, and the second layer is a nano-silicon dioxide hyperbranched polyester layer. Experiments show that the composite insulated electromagnetic wire has excellent electrical insulation performance and high temperature resistance, a breakdown voltage of more than 13kV, a DC insulation resistance of up to 210^16Ω, and a mass residual rate of 88.7-91.7% at 800 degrees Celsius, which far exceeds the performance of a single material or a simple combined insulation. The three insulating layers form a close molecular connection network, which strengthens the insulation effect and structural integrity. The PEEK composite insulated electromagnetic wire developed by the present invention has excellent insulation reliability and service life under harsh environments such as high voltage and high temperature, and can be widely used in high-end fields such as aerospace, power electronics, and new energy.

The utility model relates to an intelligent fresh porridge making and selling integrated machine and system belongs to intelligent catering field, solved the intelligentization of existing fresh porridge making and selling integrated machine lacks, the problem that the rice gruel made tastes bad, for solving the technical problem adopts the technical scheme: including time -sharing feeding mechanism, with time -sharing feeding mechanism interconnects the porridge heating mechanism and PLC control module, time -sharing feeding mechanism includes base rice bin, auxiliary rice bin, seasoning bin and distributor, the retractable electric push rod that can be set up on base rice bin, the one end of electric push rod is fixedly connected with filter device through the connecting rod of hollow structure away from base rice bin bin cover, filter device and base rice bin's discharge port are in accord, base rice bin's discharge port is connected on the first feed port of distributor through first ball valve, the discharge port of auxiliary rice bin and the discharge port of seasoning bin all are provided with opening and closing device, opening and closing device, the discharge port of auxiliary rice bin, the discharge port of seasoning bin and the second feed port of distributor mutually cooperate, the utility model discloses be applied to making porridge.

The present application proposes a wide-band phase object, a 4f optical nonlinear measurement system and a measurement method. The phase object uses two glass slides to overlap to produce a gap to meet the basic requirements for making a phase object, and is made into an ordinary phase object and an absorptive phase object, which is placed on a rotating platform. The thickness of the phase object is controlled by adjusting the rotation angle of the rotating platform to achieve the control of the phase of the phase object. When the phase produced by the phase object is an integer multiple of π / 2, complete interference bright or dark lines will appear on the central liquid film or film, and the nonlinear refraction phenomenon of the sample to be measured can be clearly observed, and the optimal sensitivity can be achieved at this time. Another use of fixing the phase object on the rotating platform is that the thickness of the phase object can be freely and accurately controlled. Under continuous wavelength waves, the appropriate thickness at the corresponding wavelength can be found by adjusting the rotation angle of the rotating platform to achieve the optimal measurement sensitivity.

The invention discloses a well drilling well wall integrated test piece manufacturing device and method. The device comprises a stirring device and a well wall mold assembly, wherein the stirring device is used for preparing and stirring a pouring concrete material; the well wall mold assembly is connected with the stirring device and is used for manufacturing a well drilling well wall; the well wall mold assembly comprises a well wall mold and a vibration device which is matched with the well wall mold so as to compact concrete materials poured into the well wall mold in a vibrating mode. The well wall mold comprises an outer side wall annular area, an outer side wall mold plate arranged on the outer side wall annular area, a plurality of inner side wall annular areas which are sequentially located on the inner ring of the outer side wall annular area and have different diameters, and an inner side wall mold plate arranged on one of the inner side wall annular areas in a matched mode. The vibrating device comprises a vibrating frame composed of a plurality of supporting columns and connecting plates connected with the upper ends and the lower ends of the supporting columns respectively, the vibrating frame is arranged outside an outer side wall template of the well wall mold in a sleeving mode, and vibrating rods are movably arranged on the supporting columns. And a plurality of through holes matched with the vibrating rods are formed in the outer side wall formwork in the axial direction and the circumferential direction of the outer side wall formwork so as to compact poured concrete located at different positions in a vibrating mode. The manufacturing device can flexibly and selectively manufacture drilling well walls with different thicknesses; and meanwhile, the compactness of the prepared drilling well wall can be improved.

The utility model provides a semiconductor device packaging shell containing a ceramic component, and relates to the technical field of semiconductor device packaging shells, the semiconductor device packaging shell comprises an outer frame plate, a packaging mold and a bottom plate, the center in the packaging mold is provided with an inner sleeve opening, the outer side of the inner sleeve opening is provided with a die-casting groove, the die-casting groove is filled with the ceramic component, and the ceramic component is arranged in the die-casting groove. The outer frame plate is arranged on the ceramic component in a die-casting mode, and a metal connecting plate is arranged at the bottom of the ceramic component and welded in a groove formed in the middle of the bottom plate. An inner pressing opening is formed in the middle of the outer frame plate, and the outer frame plate is made of an oxygen-free copper material; the packaging mold adopts a hollow rectangular body structure; pins are arranged on the front portion and the rear portion of the ceramic component, and an upper packaging plate is installed on the upper end face of the ceramic component. According to the utility model, the upper pins are firstly die-cast by using the ceramic component, and then the upper and lower surfaces of the ceramic component are tightly welded and packaged to form a semiconductor packaging shell structure, so that the structure is firmer, safer and more durable.

The invention discloses a dynamic programmable surface and a preparation method thereof, the dynamic surface can be regulated and controlled through a method of applying voltage or infrared illumination, regional deformation is realized, and numerical control reversible transformation from a two-dimensional structure to a three-dimensional structure is completed. The preparation method comprises the following steps: firstly, preparing a liquid crystal elastomer precursor solution by using a base-catalyzed sulfydryl-Michael addition reaction, then preparing liquid crystal elastomer fibers by using a wet spinning technology, and then fixing the orientation of a liquid crystal unit by using ultraviolet curing. And printing a liquid metal array on the surface of the fiber membrane, shearing the prepared liquid crystal elastomer fibers and arranging the liquid crystal elastomer fibers on the surface of the fiber membrane in an array manner, and applying voltage to heat one or more liquid crystal elastomer fibers so as to cause deformation of the fiber membrane at the corresponding position. The method is easy to operate, deformable surfaces of various complex structures and multiple sizes can be produced in a large scale, and wide application scenes are expected to be provided in flexible electronics, wearable technologies and soft robots.

The invention discloses a photovoltaic prefabricated pipe pile bearing capacity enhancing structure and a construction method thereof, and belongs to the technical field of photovoltaic power generation pile foundations. The structure comprises a prefabricated pipe pile and a bearing capacity enhancing mechanism, and the bearing capacity enhancing mechanism is arranged at the lower end of the prefabricated pipe pile and partially extends into the prefabricated pipe pile. On the basis that the original structure of the prefabricated pipe pile is not changed, a bearing capacity enhancing mechanism is additionally arranged at the lower end of the prefabricated pipe pile, so that the bearing capacity of the prefabricated pipe pile is improved through the bearing capacity enhancing mechanism, the strength and rigidity of the prefabricated pipe pile are ensured, the structure of the prefabricated pipe pile can be prevented from being complicated, and the manufacturing cost of the prefabricated pipe pile can be reduced; the construction process is simplified, and the construction efficiency is improved.

The utility model discloses a quick-change insert structure of an injection mold. The quick-change insert structure comprises a fixed mold insert, a first locking block, a second locking block and a fixed mold plate, the fastening part of the fixed mold insert is obliquely arranged, the lower part is a fastening surface, the upper part is a tilting surface, the fastening end of the first locking block is an inclined convex block, and the second locking block is provided with an inclined second locking surface. Through cooperation of the first locking block and the second locking block as well as arrangement of the positioning hole and the buffer part, the fixed mold insert is fastened when being assembled and is easily loosened when being disassembled, and the technical problem of mold replacement requirements in production of the injection mold is solved. Through the mechanism for quickly replacing the insert, the operation process is simplified, the production efficiency is improved, the production efficiency is effectively improved, the cost is reduced, the production flexibility is improved, and remarkable economic benefits and competitive advantages are brought to production.

The present invention discloses a flexible light bar with a lens and a manufacturing method thereof, wherein the flexible light bar with a lens comprises a flexible transparent bottom shell extending along the length direction of the light bar and a flexible circuit board arranged in the flexible transparent bottom shell and extending along the length direction of the light bar, the flexible circuit board is provided with a plurality of LED light-emitting chips arranged in sequence, a lens and a lens holder are arranged above the LED light-emitting chip, and packaging glue is filled between the flexible transparent bottom shell and the flexible circuit board, the lens, and the lens holder. The flexible transparent bottom shell is easy to paste and fix, and no metal fasteners are required. When making a lighting source, the outer shell can be prefabricated first and then the flexible light bar with a lens can be pasted in the outer shell, making the manufacturing process more flexible, and the production and manufacturing of the outer shell and the flexible light bar are independent of each other, which also makes the flexible light bar with a lens conveniently applicable to different outer shell manufacturers.

This invention provides a method for preparing a glass panel and the glass panel itself, belonging to the field of glass panel processing technology. The method for preparing the glass panel includes the following steps: S1: Designing a film, designing a black area pattern on the emulsion surface of the film, the black area pattern being composed of periodically arranged microstructures; defining microstructure parameters, setting the shape, period, and height of each microstructure unit in the periodic microstructure; performing macroscopic pattern combination, dividing the periodic microstructure constituting the black area into one or more predetermined geometric units, and splicing and combining the geometric units to form the overall pattern on the film. The preparation method provided by this invention uses a process based on film design and UV exposure curing to prepare a refractive mold, resulting in lower glass panel preparation costs and precise microscopic control of the refractive effect, achieving diverse optical decorative effects.

The present invention discloses a short-process preparation method for an ultra-thin high-silicon steel strip. The steps include: smelting → twin-roller thin strip continuous casting → warm rolling → stress relief annealing → pickling → cold rolling → recrystallization annealing. The method of the present invention is green and environmentally friendly. Through continuous casting by a twin-roller thin strip continuous casting machine, the extremely fast cooling rate can effectively inhibit the transformation process of the ordered phase of high silicon steel during the solidification process, reduce the content of the ordered phase in the high silicon steel cast strip, and then reduce the order degree, thereby improving its processing performance. Secondly, the method can eliminate the large reduction hot rolling process in the traditional rolling process, and avoid the cracking of high silicon steel plates caused by excessive reduction during the rolling process. The method can prepare ultra-thin high silicon steel strips with good comprehensive magnetic properties without trimming.

The invention belongs to the field of metal heat treatment, and particularly relates to a method for softening a riveting area of a hot forming part through laser. The method for softening the riveting area of the hot forming part through the laser comprises the following steps that (1) the hot forming part needing to be softened is fixed to a clamp; and (2) laser beams are used for heating the surface of the riveting area of the hot-formed part according to the set laser parameters and the scanning technology, the hardness of the riveting area is reduced through the tempering principle, the plasticity is improved, and after tempering is completed, the part is taken down and naturally cooled. And (3) the softened hot forming part is subjected to laser trimming, and the hot forming part with the area needing to be riveted softened is obtained. The scanning area is heated and tempered through laser, the hardness of the hot forming part is reduced to 200 HV-450 HV, the problems that in an original riveting process, rivets cannot penetrate through, the rivets deform, a steel plate cracks and the like can be solved, and the riveting process of the hot forming part is qualified.

The utility model is suitable for the technical field of fireproof door hot pressing, and provides a fireproof door hot pressing device which comprises supporting frames, a conveying belt arranged between the supporting frames and a fixing frame arranged on the supporting frames. A group of hydraulic cylinders are symmetrically arranged on the fixing frame; the tail ends of piston rods of the two hydraulic cylinders are connected with the same hot pressing plate, a set of lead screw sliding tables are symmetrically arranged on the top side of the fixing frame, and the movable ends of the two lead screw sliding tables are connected with the same assembly frame. The same pressing roller is rotationally matched between the assembly frames; according to the device, real-time monitoring and uniform control of the temperature in the hot-pressing process are realized through the sectional structure and the infrared temperature measurement channels between the adjacent sections, and the accuracy and the stability of hot-pressing operation are ensured, so that the product quality is ensured; and meanwhile, due to the synergistic effect of the pressing roller and the hot pressing plate, the problem of uneven pressing of a single hot pressing plate is avoided, and the hot pressing stability and the product quality are further improved.

According to the guide pipe pump, the flexible shaft and the hard shaft in the guide pipe pump are mechanically connected and fixed through the connecting assembly, the connecting mode is not limited by materials of the flexible shaft and the hard shaft, and in other words, connection between the metal flexible shaft and the metal hard shaft can be achieved through mechanical connection; moreover, the mechanical connection can also realize the connection between the metal material flexible shaft and the non-metal material hard shaft, that is, the flexible shaft and the hard shaft are connected through the connecting assembly, so that the selection range of the hard shaft material is larger, and the manufacturing of the driving shaft is more flexible; particularly, the hard shaft made of the non-metal material has good biocompatibility on the basis of meeting the requirement for the connecting roughness of the hard shaft and the impeller, then the potential risk of the hard shaft working on an organism can be reduced to the maximum extent, and the reliability of connecting the flexible shaft and the hard shaft through the connecting assembly is high.

The invention discloses a full-dentition anchorage spiral expansion device, and relates to the technical field of orthodontic medical instruments. Comprising a spiral expander, a left anchorage assembly and a right anchorage assembly, the orthodontic device is characterized in that each anchorage assembly comprises a groove-shaped metal full crown covering the occlusal surface, the cheek side surface and the lingual side surface of a plurality of rear teeth on the same side, an arch expansion tongue rod fixedly connected with the near-middle lingual side surface of the metal full crown on the same side, and an arch expansion cheek rod fixedly connected with the near-middle cheek side surface of the metal full crown on the same side; the device is high in retention force, high in bony expansion efficiency, good in tooth protection, high in patient comfort level and wide in application range.

The utility model discloses a reflective surface defect detection device. The device comprises a plurality of reflective surfaces (16); a base (14) for supporting an object; and a single camera (12) placed in a predetermined position; wherein each reflective surface (16) is configured to be located near one edge of the object to reflect a virtual image having a similar depth of field to the camera (12), the plurality of reflective surfaces (16) being configured to be movable in an x-y-z-theta direction respectively until at least one virtual image is substantially perpendicular to the line of sight of the camera (12), wherein theta is the inclination angle of the corresponding reflecting surface relative to the horizontal plane. The detection device only needs one camera, and is flexible to use, easy to manufacture and low in cost while the detection efficiency is improved.

The method for producing hot-press transfer decorative reflective tapes using heterogeneous strip combination splicing and pattern cutting technology includes the following steps: (S1): Selecting a certain thickness of heat-resistant (high) pressure-sensitive adhesive film and dividing it into strips of a fixed width, and selecting reflective materials with matching thickness within the allowable range of process requirements and heterogeneous light-functional materials that are different from them, and peeling the film into strips of a fixed width; (S2): Combining heterogeneous strips with splicing seams (L) and / or open seams (K) side by side to form a color combination or functional combination, forming the first finished product; subsequently, (S3): cutting and removing waste to form a pattern, forming the second finished product; This method has the advantages of a wider selection space for light-functional materials, more flexible and precise pattern making, short production cycle and low production cost, and can especially produce decorative engraved reflective tapes with higher luminous brightness that cannot be produced by existing technology, achieving both high-brightness reflection and high-brightness luminescence, and the reflective area is not too thick.

The invention discloses a motor rotor structure based on a metal 3D printing technology. Belongs to the technical field of motors. A plurality of rib-free rotors are arranged on the side portion of the rotor core, surface shallow grooves are formed in the surfaces of the rib-free rotors, and rotor strip-shaped shallow grooves are formed in the surface of the rotor core in the circumferential direction. According to the method for optimizing the rotor magnetic bridge, changing the rotor structure and adding the shallow grooves, on the premise of ensuring the mechanical strength, the rotor displacement caused by centrifugal force is greatly reduced, the eddy current loss of the rotor is effectively inhibited, and the motor performance is improved.

The invention relates to the technical field of photovoltaic cells, and provides a laser processing device, a method for preparing a metal electrode and a photovoltaic cell. When the laser processing system is used for preparing a metal electrode of a solar cell, accurate alignment of pulse laser and continuous laser processing positions can be achieved, and a copper circuit with complex patterns and high adhesive force can be rapidly and flexibly prepared. According to the method for preparing the metal electrode, the position of the copper electrode can be precisely machined, the problem of precision of current silk-screen printing is solved, damage to the amorphous silicon layer can be avoided, the prepared copper electrode has the large height-width ratio, and the light conversion efficiency can be effectively improved.

The invention discloses a method for preparing a zinc-containing polypeptide biocontrol bacterial fertilizer through combination of microorganisms and an enzyme method, and belongs to the technical field of microbial fertilizers. The method specifically comprises the following steps: (1) inoculating a candida utilis strain into a zinc-rich culture medium to obtain a candida utilis culture solution; (2) adding a protease compound into the solution obtained in the step (1) to obtain a zinc-containing polypeptide solution; (3) adding a bacillus thuringiensis mixture into the mixture obtained in the step (2) to obtain zinc-containing polypeptide biocontrol bacterium fermentation liquor, and concentrating the zinc-containing polypeptide biocontrol bacterium fermentation liquor to obtain the zinc-containing polypeptide biocontrol bacterium fertilizer. According to the invention, crops, microbial nutrition, biological control and soil improvement are organically combined, three-in-one functional combination is realized, and compared with a single-function fertilizer, the compound fertilizer has a more remarkable comprehensive effect.

The invention provides a shading high-barrier composite film capable of replacing aluminizing and a preparation method thereof. The composite film sequentially comprises a base layer, a shading layer, an ultraviolet-proof layer and a protective layer from outside to inside. The base layer is a polyvinyl chloride film layer, the shading layer is prepared by mixing montmorillonite nano clay, a high-molecular polymer and a nanoscale titanium dioxide dispersion liquid, the ultraviolet-proof layer is an ultraviolet light absorber formed by mixing a bio-based material and a benzophenone or triazole compound, and the protective layer is a glycol terephthalate layer. Wherein the bio-based material is prepared from sugarcane extract, anthocyanin and chitosan according to a specific proportion. The preparation method comprises the following steps: preparing the base layer, the shading layer, the ultraviolet-proof layer and the protective layer, and performing hot-pressing compounding to obtain the composite film. In addition, specific parameters of the shading layer coating process, the ultraviolet-proof layer spraying process and the protective layer hot-pressing compounding are also introduced. The composite film has shading and ultraviolet-proof functions, can replace a traditional aluminum laminated film, and has a wide application prospect.