16results about How to "Low manufacturing process cost" patented technology

The invention belongs to the technical field of integrated photoelectronics, and discloses an MOS (Metal Oxide Semiconductor) type silicon-on-chip electro-optical modulator based on colloid nanocrystals and a preparation method thereof. The silicon waveguide layer is arranged above the waveguide cladding layer; optical couplers used for inputting and outputting optical signals are arranged at the two ends of the silicon waveguide layer; the dielectric layer is arranged above the silicon waveguide layer in a covering manner; a colloidal nanocrystalline layer disposed over the dielectric layer; the upper electrode layer is arranged above the colloid nanocrystalline layer; the lower electrode layer is communicated with the silicon waveguide layer; and the dielectric layer is used for changing the polarization state according to an external voltage and controlling the inductive charge concentration in the colloid nanocrystalline layer and the silicon waveguide layer through the polarization state. The room-temperature liquid phase processing procedure of the colloidal nanocrystal is simple, and is completely compatible with a silicon-based CMOS (Complementary Metal Oxide Semiconductor) process, so that low-cost and large-scale integration can be carried out; the colloidal nanocrystal has a plasma dispersion effect stronger than that of a silicon material, is easy to realize an ENZ effect, and can realize high modulation efficiency and high modulation depth.

The invention relates to the technical field of zinc metal battery negative electrodes, in particular to a preparation method of a zinc metal battery negative electrode protective layer capable of regulating and controlling double electric layers, which comprises the following steps: pre-roasting commercial diatomite at a certain temperature, immersing into an alkali solution, fully stirring for reaction, washing to be neutral, and drying; roasting the dried diatomite again, removing impurities and residual alkali, and sieving for later use; fully mixing the treated diatomite with a binder polyvinylidene fluoride and a conductive agent Super-P, and adjusting the concentration of the slurry by using a solvent N-methyl pyrrolidone; constructing the slurry on a zinc foil in a spin coating manner to obtain a zinc metal battery negative electrode; the zinc metal battery negative electrode protective layer is provided with micron / nano holes serving as zinc ion migration channels, in addition, polar bonds, namely Si-O bonds and holes, constructed by a diatomite roasting and alkali treatment process can synergistically adjust a double electrode layer on the surface of a zinc negative electrode, so that the zinc ion desolvation process is accelerated, and the cycle life is greatly prolonged. The preparation process is extremely low in cost and suitable for large-scale production.

This invention relates to a layer-by-layer composite electrochromic thin film of Mo-WO3 and Bi-WO3 and its preparation method. The method includes: dissolving tungstic acid in hydrogen peroxide solution to obtain a peroxytungstic acid solution; adding a Bi-containing substance to the peroxytungstic acid solution and heating until the Bi-containing substance is completely dissolved to obtain a bismuth-doped peroxytungstic acid sol; adding a Mo-containing substance to the peroxytungstic acid solution and heating until the Mo-containing substance is completely dissolved to obtain a molybdenum-doped peroxytungstic acid sol; spin-coating the bismuth-doped peroxytungstic acid sol onto a conductive glass substrate and calcining to obtain a bismuth-doped WO3 thin film; and spin-coating the molybdenum-doped peroxytungstic acid sol onto the bismuth-doped WO3 thin film and calcining to obtain a Mo-WO3 / Bi-WO3 thin film. This invention employs a layer-by-layer composite structure design. The Bi-WO3 bottom layer significantly enhances the film-substrate adhesion and improves cycle stability; the Mo-WO3 surface layer ensures high optical modulation rate, fast response, and memory effect, achieving a synergistic performance improvement.

The utility model provides a bus capacitor, motor controller and electric drive assembly, relates to motor control technical field, the bus capacitor, including bus shell, capacitor rolled core package, positive pole connecting row and negative pole connecting row, the annular bus shell constitutes the annular accommodation groove, the capacitor rolled core package is the annular monomer structure formed by one-time winding, the positive pole connecting row is connected with the negative pole connecting row, and the negative pole connecting row is connected with the positive pole connecting row. The capacitor rolled core package is arranged in the annular containing groove and assembled in the annular containing groove, meanwhile, a plurality of positive tabs and a plurality of negative tabs are arranged on the surfaces of the two sides of the capacitor rolled core package respectively, and the positive connecting bar and the negative connecting bar are arranged on the two sides of the capacitor rolled core package respectively and make electric contact with the positive tabs and the negative tabs respectively. Compared with the prior art, according to the utility model, the core package is rolled by the annular single capacitor which is formed by one-time winding, so that the manufacturing process is lower in cost, better in consistency and more uniform in capacitor temperature. And the structure is simple and compact, the power density is high, and the low-impurity inductance design is realized.

The invention discloses a binary and multi-component TM-MOFs@MgH2 composite hydrogen storage material and a preparation method thereof, which belongs to the technical field of novel hydrogen storage materials. The binary and multi-component TM-MOFs@MgH2 composite hydrogen storage material preparation method provided comprises the following steps: S1, preparing a binary and multi-component transition metal TM-MOFs precursor; S2, preparing a composite hydrogen storage material: pre-ball milling the TM-MOFs precursor obtained in step S1, adding MgH2 powder material, ball milling, placing the ball-milled mixture powder in a vacuum environment for complete dehydrogenation, and obtaining a binary and multi-component TM-MOFs@MgH2 composite hydrogen storage material. Compared with pure MgH2 hydrogen storage materials, the binary and multi-component TM-MOFs@MgH2 composite hydrogen storage materials provided by the invention have a smaller reduction in hydrogen storage capacity, a significantly reduced hydrogen absorption and desorption reaction temperature, and greatly improved kinetics, which significantly improves the catalyst catalytic efficiency and the practicality of the hydrogen storage material.

The invention belongs to the technical field of magnetic suspension synchronous motors, and particularly relates to a magnetic suspension permanent magnet synchronous motor heat dissipation structure which comprises a shell, a stator part, a rotor part, a front end cover plate, a rear end cover plate, an air inlet and an air outlet, the front end cover plate and the rear end cover plate are connected to the two sides of the shell in the length direction respectively, the air inlet is formed in the rear end cover plate, and the air outlet is formed in the rear end cover plate. The rear end cover plate is provided with a first heat dissipation hole and a second heat dissipation hole, the second heat dissipation hole is connected with a heat dissipation channel, the heat dissipation channel is arranged in the shell, the position, close to the front end cover plate, of the heat dissipation channel is connected with a front end air outlet hole, the air outlet is formed in the shell, and the air outlet is connected with a one-way valve. Compared with the prior art, the heat dissipation area of the shell can be increased, internal cold air circulation is smoother, the heat dissipation efficiency is improved, and the size of the motor is reduced through the built-in heat dissipation channel.

The application provides a high-efficiency preparation process of short-fiber hard thermal insulation composite material: carbon fibers with short fibers as raw materials are immersed in a modifier for surface treatment, then metal modification, carbon layer deposition and inorganic layer coating are sequentially performed on the surface; the carbon fibers and inorganic materials are compounded and hot-pressed, and then high-temperature graphitization treatment is performed, so that the short-fiber hard thermal insulation composite material is obtained. The process can improve the connection strength between the short fibers and the inorganic materials, improve the mechanical properties of the composite material, and has higher graphitization degree and good thermal insulation performance.

An adjustable storage goods shelf relates to the field of goods shelves and comprises two vertically arranged support frames and a placing frame transversely arranged between the two support frames, the placing frame comprises two cross beams arranged in parallel and a plurality of groups of span beam structures arranged between the two cross beams in a spanning mode, each span beam structure comprises two movable beams arranged side by side, and the adjacent side faces of the two movable beams are inclined planes. A first baffle and a second baffle are vertically arranged at the two ends of the movable beam, the two baffles are located on the outer sides of the two cross beams, the second baffle is attached to the outer side of the cross beam on the side where the second baffle is located, a gap is formed between the first baffle and the outer side of the other cross beam, and the first baffle and the outer side of the other cross beam are locked through a locking piece. According to the cross beam structure, through the matching structural design of the baffles at the two ends of the two movable beams and the corresponding cross beams, the cross beams do not need to be machined, transverse adjustment of the movable beams on the cross beams is achieved, namely the distance between the two movable beams can be adjusted, and therefore the cross beam structure can adapt to the storage requirements of barrel-shaped goods with different diameters and is high in universality.

The present application discloses a diffusion element and a preparation method thereof, and a projection system. The diffusion element comprises a substrate and a plurality of microlenses; the plurality of microlenses are arranged on a side surface of the substrate; wherein the distance from a position farthest from the substrate to a preset axis of at least one microlens is smaller than the distance from the center of a surface of the microlens close to the substrate to the preset axis, and the preset axis is parallel to the central axis of the substrate.

The present invention discloses a thermally conductive insulating material and a preparation method and application thereof, and belongs to the technical field of thermally conductive packaging insulating composite materials and their preparation. The present invention solves the problems of unilateral precipitation and uneven dispersion caused by adding existing diamond particles to epoxy resin, which causes the thermal conductivity and insulation performance of thermally conductive packaging insulating materials to deteriorate. The present invention first uses diamond powder wrapped with dopamine hydrochloride, and then obtains fluorinated diamond powder wrapped with perfluorosilane by polymerization reaction between tridecafluorooctyltrimethoxysilane and dopamine chains on the surface of diamond, and then adds it as a filling phase to the epoxy resin matrix, thereby improving the thermal conductivity of the epoxy resin composite material, which is expected to be used as a new thermally conductive packaging insulating material for power semiconductor electronic devices. In addition, the preparation process of the epoxy resin composite material provided by the present invention has low cost, is easy to implement, has good environmental protection, and the operation of the required instruments is simple and safe.

This invention relates to the field of sludge treatment technology, and more particularly to a method for preparing struvite by acid leaching of phosphorus from sludge gasification residue with kaolinite assistance. The method includes the following steps: S1, calcining a mixture of kaolinite and sludge in a certain proportion at 800-1000℃ for a period of time; S2, dissolving the calcined product with an acid solution, separating the solid and liquid, and collecting the phosphorus-containing supernatant; S3, adding a certain amount of magnesium and ammonium sources to the phosphorus-containing supernatant, adjusting the pH to 9.4-10, stirring for a period of time, separating the solid and liquid, washing the filtered solid with deionized water, and drying to obtain struvite crystals. This invention introduces kaolinite before sludge calcination, increasing the phosphorus content in the calcined product, improving the utilization rate of sludge gasification residue, and solidifying heavy metals in the sludge. It avoids a large amount of heavy metals entering the phosphorus-containing supernatant during acid leaching, resulting in a stable and reliable MAP struvite material.

The utility model provides a splicing type rotor structure and a tool, the splicing type rotor structure comprises a rotating shaft, and the rotating shaft is provided with a positioning hole; the multiple sections of rotor iron cores are arranged on the rotating shaft in a stacked and sleeved mode, a plurality of limiting strips are arranged in the circumferential direction of the rotor iron cores, and a limiting groove is formed between every two adjacent limiting strips; the limiting grooves are matched with the magnets; the two rotor end plates are arranged on the rotating shaft in a sleeving mode, the two rotor end plates are located at the two ends of the multiple sections of rotor iron cores which are arranged in a stacked mode respectively, each rotor end plate comprises a first connecting part and a second connecting part, and a connecting through hole is formed in each first connecting part; a fixing pin penetrates through the connecting through hole and the positioning hole to fix one of the rotor end plates at one end of the rotating shaft, and one side, deviating from the first connecting part, of the second connecting part is connected with the end face of the rotor iron core in an adhesive mode. According to the utility model, the low-cost manufacturing requirement of a long-size rotor can be met, and the applicability is high.

The application discloses a net system recovery scale-down test system, which comprises a scale-down test tool, a simulated rocket body and a net system recovery simulation test sample machine, the test tool hoists the simulated rocket body to the top of the net system recovery simulation test sample machine, four hooks are evenly and circularly arranged on the outer circumferential wall of the simulated rocket body, the net system recovery simulation test sample machine is arranged below the test tool, the test tool and the simulated rocket body complete the simulation of the falling motion track of the rocket, in the falling process of the simulated rocket body, the net system recovery simulation test sample machine measures the real-time posture of the simulated rocket body, drives the net system to complete the hooking and capturing of the hooks of the simulated rocket body, and absorbs and buffers the energy in the whole process from the hooking of the simulated rocket body to the static state, so that the hooking and capturing process of the rocket body is simulated. The application simulates the capturing process of the rocket body by the net system recovery system through the scale-down test, the system can identify the design defects in the early stage of research and development, and significantly reduces the development cost of the net system recovery.

The invention discloses an anti-hepatic fibrosis small molecule compound and application, the anti-hepatic fibrosis small molecule compound is composed of 3 beta-ethylphthalein and 6-hydroxykaempferol, and the anti-hepatic fibrosis small molecule compound is used as an anti-hepatic fibrosis drug after splenectomy. The traditional Chinese medicine composition can improve the liver fibrosis degree (relieving liver inflammation, improving liver zymogram, reducing bilirubin and reducing collagen deposition) after splenectomy, and the liver fibrosis is caused by at least one of alcoholic hepatitis, fatty liver, viral hepatitis, drug-induced hepatitis, autoimmune hepatitis and the like.

The invention discloses an image sensor and a forming method thereof, and the method comprises the steps: providing a substrate which comprises a pixel region and a peripheral region; forming a groove in the pixel area; a first gate structure is formed in the groove and comprises a first gate layer, first ions are arranged in the first gate layer, and the top surface of the first gate layer is higher than the surface of the substrate; forming a peripheral gate structure material layer on the substrate and the first gate structure, wherein the peripheral gate structure material layer comprises a peripheral gate material layer; ion implantation is carried out on a partial region of the peripheral gate material layer on the peripheral region, so that the peripheral gate material layer on the peripheral region forms a peripheral gate layer, and doped ions are arranged in the peripheral gate layer; and after carrying out ion implantation on a partial region of the peripheral gate material layer on the peripheral region, etching the peripheral gate material layer on the substrate and the first gate structure, forming a first side wall on the side wall of the first gate layer higher than the surface of the substrate, and forming a peripheral gate structure including the peripheral gate layer on the peripheral region. The performance of the image sensor is improved.

This application relates to the field of construction machinery and discloses a hook module and a tower crane. The hook module includes an upper pulley assembly, a lower pulley assembly, and a hook assembly arranged sequentially along a first direction. The upper pulley assembly includes an upper pulley frame and a mounting mechanism. A mounting section is provided at one end of the upper pulley frame facing the lower pulley assembly. Mounting mechanisms are provided on both sides of the mounting section in a second direction. The mounting ends of the mounting mechanisms on both sides of the mounting section are aligned and extendable along the second direction. A hanging structure is provided at one end of the lower pulley assembly near the mounting section. The hook assembly is mounted on the lower pulley assembly. This application achieves automatic ratio switching through the mechanical cooperation between the mounting mechanism and the hanging structure. It has a simple structure, is easy to operate, reduces manufacturing costs, and ensures reliability.