27results about How to "Improve defects" patented technology

The application belongs to the technical field of polymer materials, and particularly relates to a nylon powder and a preparation method and application thereof. The nylon powder comprises high-viscosity nylon resin, low-viscosity nylon resin and an additive, wherein the relative viscosity of the high-viscosity nylon resin is 1.75-1.85, the relative viscosity of the low-viscosity nylon resin is 1.55-1.65, the mass ratio of the high-viscosity nylon resin to the low-viscosity nylon resin is 10:1-3, and the additive comprises an antioxidant. The high-viscosity nylon resin and the low-viscosity nylon resin with specific viscosities are compounded and used in proportion, the high-viscosity nylon resin serves as a skeleton of a hydrogen storage bottle inner container and provides mechanical property support, and the low-viscosity nylon resin provides fluidity and ensures few defects in bottle forming. The use of the nylon powder of the application improves the mechanical property of the hydrogen storage bottle inner container and the integrity of the inner container structure, and a stable and defect-free type IV nylon hydrogen storage bottle inner container is prepared.

The invention belongs to the technical field of nano-catalyst antibiosis, and particularly relates to a zinc-based nitrogen-doped carbon-loaded metal palladium nano-enzyme as well as a preparation method and application thereof. The ZnNC-loaded metal palladium nano-enzyme is prepared by adopting a deposition-precipitation method which is simple to operate, taking ZnNC as a carrier and taking metal palladium nano-particles as an active center. The nano-enzyme has excellent oxidase-like activity, can catalyze O2 to generate hydroxyl free radicals (. OH), singlet oxygen (< 1 > O2) and superoxide anion free radicals (O2 <->) so as to kill bacteria and achieve an antibacterial effect, and has a remarkable antibacterial effect on escherichia coli under an acidic condition.

The application discloses a kind of network unmanned aerial vehicle inspection achievement automatic back transmission and defect identification method, it is related to power distribution network inspection technical field.The purpose is to solve the problems of low efficiency, fault response lag, data transmission without security and defect identification relying on artificial in traditional manual inspection.The method comprises: unmanned vehicle carries unmanned aerial vehicle and hangar drives to parking point, unmanned aerial vehicle takes off and carries out inspection and collects achievement data;After unmanned aerial vehicle returns, unmanned aerial vehicle platform processes and transmits achievement data to unmanned aerial vehicle management platform;Management platform uses AI image recognition technology to identify defects in data, generates identification results;Finally, management platform synchronizes identification results to power grid digital brain platform, and is associated with equipment operating state storage.The application realizes the full-process automation and intelligentization of distribution network inspection, greatly improves the inspection efficiency and the accuracy of data processing, optimizes the fault response mechanism, and provides strong support for the intelligent operation and maintenance of distribution network line.

The application relates to the technical field of battery materials, and discloses a sodium-philic carbon-based material, a negative-electrode-free current collector, a preparation method of the sodium-philic carbon-based material and a sodium metal battery. The preparation method of the sodium-philic carbon-based material comprises the following steps: providing a mixed solution, wherein the mixed solution comprises carbon source powder, an iron source and a solvent; fully reacting the mixed solution in a protective atmosphere at 160-240 DEG C; obtaining a carbon-loaded sodium-philic material after solid-liquid separation; fully calcining the carbon-loaded sodium-philic material in an inert atmosphere at 700-900 DEG C to obtain a porous sodium-philic precursor; and treating the porous sodium-philic precursor in a reaction gas atmosphere at 400-700 DEG C for 1-3 hours to obtain the sodium-philic carbon-based material. The reaction gas atmosphere is an ammonia gas and inert gas mixed atmosphere or an ammonia gas atmosphere. The material is coated on the surface of the negative-electrode-free sodium metal battery current collector, and can enhance the electrochemical performance of the battery.

The application provides a high-capacity and high-rate hard carbon negative electrode material and a preparation method and application thereof, and belongs to the technical field of sodium ion battery negative electrode materials. Specifically, biomass shell raw materials are coarsely broken and sieved to obtain biomass coarse powder; the biomass coarse powder is mixed with an oxidizing agent and then pre-oxidized; mechanical pulverization is performed to obtain biomass coarse powder with a D50 of 8-15 microns; the biomass coarse powder is added into mixed acid and heated in a water bath, and then washed with water until neutral to obtain a purified precursor; and finally, the precursor is subjected to staged high-temperature carbonization in a vacuum carbonization furnace. Through specific process parameters, the prepared hard carbon material has a hierarchical porous structure and a suitable graphite microcrystalline layer spacing, and has a low total content of metal impurities; when applied to a sodium ion battery negative electrode, the hard carbon material exhibits a high reversible specific capacity, a high initial coulombic efficiency, and excellent long cycle stability and rate performance.

This invention discloses a method for preparing high-density, low-defect yttrium oxide ceramic materials and their applications, comprising the following steps: (1) preparing ceramic blanks by using high-purity yttrium oxide precursor powder through a molding process; (2) heating the ceramic blanks obtained in step (1) to 800-900 ℃ at 1-5 ℃ / min in an oxidizing atmosphere and holding them for 15-30 h; (3) continuing to heat the material obtained in step (2) to 1080-1150 ℃ at 1-5 ℃ / min in an oxidizing atmosphere and holding them for a shorter holding time than in step (2); (4) cooling the material obtained in step (3) with the furnace to avoid thermal stress-induced cracks, thereby obtaining the high-density, low-defect yttrium oxide ceramic material. This invention improves the density and microstructure uniformity of the material, enhances surface chemical stability and defect repair, strengthens bulk crystallinity and thermal shock resistance, reduces the risk of particulate contamination and extends component life, and the process is energy-saving, environmentally friendly and highly operable.

Provided is a biaxially oriented polyester film which is used for dry film resist support applications and which has a layered structure of two or more layers, at least one layer containing an inorganic compound having elemental germanium, an organic salt having elemental sulfur, and an organic salt having elemental phosphorus, the atomic content of elemental germanium being 10-30 ppm by weight relative to the weight of the polyester film, the atomic content of elemental sulfur being 10-30 ppm by weight relative to the weight of the polyester film, the atomic content of elemental sulfur being 10-30 ppm by weight relative to the weight of the polyester film, and the atomic content of phosphorus being 10-30 ppm by weight relative to the weight of the polyester film. The atomic content of elemental sulfur is 1-25 ppm by weight, the atomic content of elemental phosphorus is 25-37 ppm by weight, and the total atomic content of metal elements is 1-25 ppm by weight. Provided is a polyester film having a small number of foreign matters and good film-forming properties.

This utility model discloses an injection mold lower mold with a venting and anti-sticking ejection mechanism, relating to the field of injection mold technology. It includes a fixed base plate, a lifting ejection mechanism, and a fixed lower mold. The core mold is equipped with a stacked, sheet-like venting mechanism. Multiple venting plates combine to form a dense venting channel, quickly expelling trapped air from the mold cavity and eliminating air marks and weld lines on the product. The lifting plate, translation slide, guide slider, inclined support rod, and main push rod constitute a coordinated ejection structure. During demolding, the core mold limits the injection molded workpiece by inverting and flipping the edge to prevent sticking and deformation. The inclined support rod provides stable guidance, reducing wear and jamming. The venting mechanism is easy to disassemble and assemble; the blocking venting plate can be replaced individually without modifying the product or gate. It is compatible with various automotive injection molded parts with inverted edges, broadening the process window, improving yield, and reducing mold maintenance time.

This invention relates to a blank board testing system and method for Mini LED substrates, used for conducting continuity tests on the Mini LED substrate circuitry before chip packaging. The blank board testing system includes a Mini LED substrate, a blank board testing module, and a result display unit. This invention employs a method where the control unit for controlling the test path and the Mini LED substrate circuitry under test are contactably connected to any corner pad in a matrix of pads via a substrate connector to perform continuity testing. A single, simple operation allows for one-click testing of an entire substrate, resulting in short testing time and high efficiency. Furthermore, this connection control method is adaptable to all products using fully connected matrix pads, saving on personnel training costs and fixture development costs. In addition, this invention uses a storage and analysis unit to record the continuity test results of multiple Mini LED substrate circuits for overall analysis and visualization, facilitating timely detection and improvement of process defects and saving unnecessary costs.

The application discloses a nano material for targeting and driving resuscitation of dying cells, and a preparation method and application thereof. The nano material is a nano platelet vesicle with phosphatidylserine exposed to the outer layer of the membrane after nanoization and centrifugal treatment. The material is obtained by separating and enriching platelets from peripheral blood, then nanoizing the platelets, and then inducing the phosphatidylserine on the platelet membrane to evert through high-speed centrifugation. The material is used for preparing a medicine for promoting tissue repair, and the medicine promotes resuscitation of dying cells by targeting the dying cells and enhancing the membrane repair capacity of the dying cells, so as to promote tissue repair, including repair of orthopedic, muscle, skin, spinal cord or visceral tissue, especially repair of diabetic foot, skin avulsion injury, ischemic skin flap or spinal cord injury. The resuscitation of dying cells is promoted successfully without intervention of lysis programmed cell death initiation, so that the problems of off-target effect and treatment paradox existing in current mainstream small molecule inhibitor strategy are effectively solved.

The invention relates to the technical field of secondary batteries, in particular to a sodium ion battery, which is characterized in that the compaction density and the ratio of a positive plate and a negative plate are controlled, a PET (Polyethylene Terephthalate) carbon-coated composite aluminum foil is selected as a positive current collector, a ceramic coating is adopted to correspond to the positive plate, and an aramid fiber coating is adopted to correspond to a double-sided coating diaphragm of the negative plate. According to the high-magnification and high-safety sodium ion battery, the defects of the sodium ion battery in the aspects of high-magnification circulation and safety are overcome by utilizing the synergistic effect among the positive plate, the negative plate and the double-sided coating diaphragm, the high-magnification and high-safety sodium ion battery is obtained, and the high-magnification and high-safety sodium ion battery not only can meet high-magnification charge-discharge circulation, but also can pass an acupuncture test.

The utility model relates to foundry technology field especially relates to a vertical directional glass casting mould, it contains four identical size L type cast iron unit, L type cast iron unit is set up as cast iron piece of right angle bending. L type cast iron unit is through end point butt joint or overlapping nested and is pasted and constitutes the mould with longitudinal cavity to make glass liquid can flow in the height direction of pouring opening based on mould. The technical scheme presented in the application not only significantly improves the quality and efficiency of glass casting, but also reduces defects, improves the yield and performance of products. These improvements not only improve the overall quality of the product, but also provide a more reliable material basis for subsequent processing and application, with wide application prospect and significant economic benefits.

A semiconductor device includes: a substrate; a plurality of semiconductor patterns on the substrate; a bit line in contact with a first end portion of each semiconductor pattern in the first direction and extending in a third direction perpendicular to an upper surface of the substrate; a plurality of word lines overlapping the plurality of semiconductor patterns in the third direction, respectively, and extending in a second direction intersecting the first direction; and a plurality of capacitors in contact with a second end portion of a corresponding semiconductor pattern of the plurality of semiconductor patterns along the first direction. Each word line includes a first conductive liner layer, a second conductive liner layer, and a conductive layer sequentially located on a corresponding semiconductor pattern of the plurality of semiconductor patterns, and the first conductive liner layer and the second conductive liner layer include materials different from each other or include the same material having a composition ratio different from each other.

This application provides a semiconductor structure and its formation method. The semiconductor structure includes: a SiC substrate with a SiC epitaxial layer on the SiC substrate; and a gate structure located on or within the SiC epitaxial layer. The gate structure includes a passivation layer and a gate layer located on the passivation layer, wherein the passivation layer includes a first film with a thermal conductivity of 10 W / m·K to 28 W / m·K. This application can improve the channel carrier mobility of SiC MOSFET devices.

The invention provides a manufacturing method of modal and blended knitted fabric thereof, which specifically comprises the following steps: S1, singeing: quickly passing gray fabric of modal cotton blended knitted elastic plain cloth fabric through a burner of a singeing machine, and burning off hairiness on the surface of the fabric; s2, boiling off and bleaching: boiling off and bleaching the singed gray fabric by adopting a high-temperature overflow dyeing machine; s3, in-cylinder loose mercerizing: directly performing loose mercerizing treatment on the boiled and bleached wet cloth in a high-temperature overflow dyeing cylinder; s4, reactive dyeing: dyeing the fabric subjected to the loose mercerizing treatment by using a reactive dye according to a required color, and fixing the color by using sodium carbonate; s5, soaping: soaping the dyed fabric to remove flooding; s6, tentering and shaping; s7, preshrinking is carried out; and S8, finished product inspection and the like. The defects that modal and blended knitted fabric thereof are prone to deformation and pilling are overcome, meanwhile, the elasticity and resilience of the fabric are improved, and the fabric is endowed with soft, glutinous and smooth hand feeling, easy-care, crease-resistant and good in gloss after being washed.

The application provides a reaction gas processing method for wafer etching, comprising: providing a plurality of wafer groups, wherein each of the plurality of wafer groups comprises a first wafer and a second wafer adjacent to each other when entering an etching chamber; performing a reaction gas processing step on each of the plurality of wafer groups, the reaction gas processing step comprising: etching the first wafer with an etching gas in the etching chamber; placing the etched first wafer in a first slot of a processing chamber; etching the second wafer with the etching gas in the etching chamber; moving the first wafer in the first slot to a second slot of the processing chamber, wherein the first slot is above the second slot; placing the etched second wafer in the first slot of the processing chamber; and performing a cleaning process on the second wafer and the first wafer. The reaction gas processing method for wafer etching can avoid HBr·2H2O crystallization on the surface of the etched wafer without contaminating the wafer.

The invention belongs to the technical field of nano material preparation, and provides a preparation method of a biomass-derived molybdenum carbide-based electrochemical hydrogen evolution catalyst. Specifically, biomass Chinese yam with a wide source is used as a carbon and nitrogen source, a molybdenum-based precursor is obtained through simple impurity removal, airing, grinding and hydrothermal reaction with ammonium molybdate, then the precursor is roasted in an inert atmosphere, and the biomass nitrogen-doped carbon-molybdenum carbide nano composite catalyst is prepared by adjusting the carbonization temperature and the carbon-molybdenum ratio of reaction raw materials. The molybdate and the common biomass Chinese yam are adopted as raw materials, the source is wide, the price is low, the preparation method is simple and safe, and the controllability of the preparation process is high. In the prepared composite material, molybdenum carbide particles are good in dispersity on biomass carbon, and the composite material has good electrochemical activity and stability when being applied to an electro-catalysis water desorption hydrogen desorption reaction.

The application provides an organic semiconductor longitudinal heterojunction monocrystal array and a preparation method thereof, and the preparation method comprises the following steps: providing a first silicon column template, a second silicon column template and a substrate; the first silicon column template and the second silicon column template are respectively provided with a first silicon column array and a second silicon column array, and the first silicon column template, the second silicon column template and the substrate are respectively provided with a first alignment mark, a second alignment mark and a third alignment mark; based on the melting point difference of different organic semiconductor systems, a longitudinal heterojunction monocrystal array with a determined crystal orientation and a controllable structure size is prepared through step-by-step melting, directional crystallization and alignment control. Compared with the traditional longitudinal heterojunction which is usually prepared layer by layer by using a solution method, the solvent is easy to damage the first layer of crystals when the second layer of crystals is formed, the step-by-step crystallization is realized by using the melting point difference in the application, the influence of the solvent on the first layer of crystals is avoided, and the application has the advantages of high controllability, good stability and strong applicability.

The application discloses a kind of multi QEMU simulation inter-system communication method and device, the method includes: according to the communication requirement between multi QEMU simulation systems, at least one serial interface is generated and initialized by master system;Then the two serial interface pairs that constitute communication channel are connected;The management configuration process of master system starts at least one simulation system, and maps single-end serial interface as the device back end of simulated serial interface in system;Multiple simulation systems are initialized, and application development can be carried out in the interior;Any QEMU simulation system carries out communication between simulation systems according to the serial interface device file in the system.The application focuses on the node communication problem when embedded system is simulated, breaks through the requirement of traditional single machine simulation, and is flexible in configuration, controllable in testing, can meet the requirement of serial data communication between multi QEMU simulation systems in various scenes, and better improves the efficiency of embedded software development and problem positioning.

The invention belongs to the technical field of large-size diamond single crystal growth, and particularly relates to a simple spliced single crystal growth system, which is used for inhibiting the growth of polycrystals at single crystal seam positions and comprises a variable-size limiting device, and the variable-size limiting device can adjust the size of a limiting space according to the needs of different single crystal growth splicing sizes. According to the method, the high-quality growth requirements of spliced single crystals with different sizes and regular special-shaped structures can be met, the growth of polycrystals at the joint position can be inhibited through tight combination of the crystals, the flatness of the surface of the grown crystal and the uniformity of heat dissipation of the edge crystal are ensured, and the defects and stress distribution of the spliced crystal position are improved to a great extent.

This application discloses a furnace nose humidification system, which includes a gas supply pipeline, a first pipeline, a second pipeline, and a mixing pipeline. The first pipeline includes a first branch, a second branch, a first heater, and a water tank. The gas supply pipeline is connected to the mixing pipeline through the first and second pipelines. Since the outlet of the first branch and the inlet of the second branch are located on the liquid surface, the nitrogen gas output from the outlet of the first branch can be humidified by water vapor in the water tank. Because the wet nitrogen gas obtained by water vapor humidification has low humidity, the adjustment range of the water temperature for obtaining the required amount of wet nitrogen gas in the furnace nose can be expanded. This allows for humidity regulation of the wet nitrogen gas within a larger water temperature adjustment range, facilitating humidity control and improving humidity control accuracy. Furthermore, this improves the control accuracy of dry and wet nitrogen gas in the furnace nose, enhances the accuracy of adjusting the dew point inside the furnace nose, reduces zinc ash defects, and improves the surface quality of the strip steel.

The invention provides an image generating method and an image processing system. The method comprises the following steps: establishing a plurality of image processing models respectively corresponding to a plurality of candidate image sizes; obtaining a plurality of training data sets respectively corresponding to the plurality of candidate image sizes; respectively training the plurality of image processing models by using the plurality of training data sets; detecting a first image size of the input image; determining a target image processing model from the plurality of image processing models according to a first image size; processing the input image through the target image processing model to generate depth information corresponding to the input image; and generating a first output image and a second output image according to the depth information. Therefore, the image quality of the generated (or presented) three-dimensional image can be effectively improved.

The invention discloses a grouting material for offshore wind power engineering, and belongs to the technical field of building materials. The grouting material for offshore wind power engineering comprises the following raw materials in parts by weight: 10-60 parts of cement, 10-60 parts of a mineral admixture, 5-50 parts of fine aggregate, 0.5-5 parts of a hydrophobic functional material and 0.2-2 parts of an additive. Wherein the hydrophobic functional material is obtained by reacting modified silicon dioxide, perdecafluorooctyltriethoxysilane, hydrogen-containing silicone oil and tetraethyl silicate. The grouting material prepared by the invention has excellent corrosion resistance, impermeability, freeze-thaw resistance, durability and early and later strength, and is suitable for offshore wind power engineering construction.

The application provides a method for improving early activity of cement by refining activated belite minerals, and belongs to the field of building materials. In the clinker calcination process, the first step is to control the firing temperature to be 1100-1200 DEG C, and the holding time is 1-2 h, so that a large amount of C5S2$ minerals are generated; the second step is to increase the calcination temperature to 1280-1320 DEG C, and the holding time is 1-2 h, so that the C5S2$ minerals are not completely decomposed, and most of them are converted into alpha'-C2S and C$ clinker minerals with small grain size. In addition, the mineralization technology is used to promote the generation of a large amount of C3S at about 1300 DEG C, the ion doping is used to distort the C2S mineral lattice and the C3S mineral lattice, and the crystal defects of the high belite cement clinker minerals are increased, so that the grain size of the clinker minerals is refined. The above-mentioned methods work together, the grain size of the high belite cement clinker is refined, and the early activity of the high belite cement is improved. The preparation method solves the problems of low early activity of the high belite cement, and the prepared high belite cement clinker has the characteristics of small grain size and containing alpha'-C2S minerals.

The present application relates to a kind of high-flux fast charging type artificial graphite negative material and its preparation method, belong to lithium ion battery negative material technical field.The present application is mixed with the solution with the adhesion and the raw material powder mixed with pyrolytic ion salt uniformly after, briquetting, then graphitization, the high-flux fast charging type artificial graphite negative material of preparation is obtained.The present application can significantly improve the loading amount of graphitization by densification forming, the introduction of pyrolytic salt in the forming process is conducive to inhibiting the ordered arrangement of carbon microcrystalline in the graphitization heating process, increase defect, increase interlayer spacing, to realize the preparation of low-cost high-flux fast charging artificial graphite negative electrode.The preparation method used in the present application is simple, and the prepared fast charging artificial graphite negative electrode has excellent 3C charge-discharge performance.

The application belongs to the technical field of aluminum alloy casting, and particularly relates to a metal mold for aluminum alloy hardware casting, which comprises an upper mold base, a lower mold base, a cooling mechanism and a liquid changing mechanism. Through linkage and cooperation of the cooling unit and the liquid changing mechanism, the liquid cooling is sprayed through the liquid injection hole, and the temperature is uniformly extruded by the sealing plate, so that the temperature gradient of the traditional one-way water channel is eliminated, the mold cooling rate is consistent, the casting defects are effectively improved, the cooling efficiency is improved, the intelligent manufacturing production line demand is adapted, the automatic and rapid discharge of the heated cooling liquid is realized through the liquid changing column and the liquid changing pipe in the liquid changing mechanism, the through hole is arranged around the liquid injection hole, the heated cooling liquid is discharged quickly nearby, the contact time of the heated cooling liquid with the low-temperature cooling liquid is shortened, the automatic and rapid replacement of the heated cooling liquid is realized, the continuous supply of the low-temperature cooling liquid is ensured, the cooling stability is further improved, and the intelligent manufacturing efficient production is facilitated.

The invention provides a high-specific-capacity hard carbon material as well as a preparation method and application thereof. The high-specific-capacity hard carbon material is prepared from raw materials including a phenolic compound, an aldehyde compound, a catalyst and a curing agent, the preparation method comprises the following steps: (1) uniformly mixing a phenolic compound, an aldehyde compound and a catalyst in water, and reacting to obtain a low-molecular-weight resin solution; (2) adding an amine curing agent into the low-molecular-weight resin solution obtained in the step (1), uniformly mixing, and carrying out hydrothermal reaction to obtain high-molecular-weight cross-linked resin; and (3) carrying out low-temperature calcination on the high-molecular-weight cross-linked resin obtained in the step (2) in an oxygen-containing gas atmosphere, then carrying out high-temperature calcination in a protective gas atmosphere, and cooling to room temperature to obtain the high-specific-capacity hard carbon material. The prepared high-specific-capacity hard carbon material is high in reversible specific capacity, the first coulombic efficiency and the rate capability are kept at a high level, and the comprehensive sodium storage performance is excellent.