24results about How to "Good surface smoothness" patented technology

The invention provides a cylindrical lithium battery. The sum of the areas of all second holes of a positive collector plate in the cylindrical lithium battery is 0.9-1.5 times of the area of a first hole, a fusing groove is formed in a tail body part of the positive collector plate, and the minimum sectional area S2 of the tail body part at the position of the fusing groove is 45%-65% of the overall sectional area S1 of the tail body part; a negative collector plate in the cylindrical lithium battery is provided with a heightening platform with a flat surface, the diameter D8 of the heightening platform is 28%-38% of the diameter D7 of the negative collector plate, and the height difference H4 between the surface of the heightening platform and the surface of the first side is 18%-30% of the thickness T4 of the negative collector plate. By reasonably designing the necking part, the positive collector plate and the negative collector plate, the cylindrical lithium battery disclosed by the invention is balanced in multiple aspects of liquid injection performance, safety, weldability and the like, and the battery performance can be improved.

The invention discloses a PCBN (Polycrystalline Cubic Boron Nitride) composite sheet and a sintering process thereof. The sintering process of the PCBN composite sheet comprises the steps of material mixing, hot prepressing sintering, hot prepressing cooling, cubic pressure sintering and cooling to the room temperature, and raw materials in the mixed material comprise, by mass, 30%-85% of CBN micro powder and 15%-70% of binding agent micro powder. The PCBN composite sheet prepared by the sintering process is high in surface flatness and has relatively high hardness and cutting output.

The utility model relates to a projection curtain device and projection equipment. The projection curtain device comprises a curtain, a rolling assembly and a tensioning assembly. Wherein the curtain is provided with a first side part and a second side part which are arranged oppositely; the rolling assembly is connected with the first side part, and the rolling assembly is rotatably arranged, so that the curtain is rolled on the rolling assembly; the tensioning assembly comprises a containing part and a blocking part, the containing part is provided with a containing groove, the second side part is arranged in the containing groove, the blocking part is arranged in the containing groove, the blocking part is attached to the second side part and abuts against the inner wall of the containing groove, and the extending direction of the blocking part is the same as the extending direction of the second side part. According to the projection curtain device in the embodiment, the second side edge abuts against the inner wall of the containing groove of the containing part through the blocking part, so that the second side part is relatively flat, and the flatness of the curtain is ensured.

The present disclosure relates to a method for producing microparticles. The method for producing microparticles can produce microparticles of uniform size and narrow density range. Therefore, the method for producing microparticles can exhibit a higher production yield compared to a conventional method for producing microparticles. The microparticles have a density lower than that of water and their range is very narrow, and thus, when used as a microcarrier, they enable cell culture with high efficiency without problems floating up onto the surface of the culture medium during the cell culture process, and are easily separated and recovered after the culture process.

The invention relates to a laser module. The laser module comprises a circuit carrier plate which comprises a hard plate layer and a flexible plate layer, a part of the flexible plate layer and the hard plate layer are stacked to form a hard plate part of the circuit carrier plate, and a part of the flexible plate layer is located outside the hard plate layer to form a flexible plate part of the circuit carrier plate, the flexible plate part is provided with a first electrode used for being electrically connected with an external element. The laser chip is arranged on the hard plate part and is electrically connected with the first electrode through the hard plate part and the flexible plate part; and the lens assembly is arranged on the hard plate part and corresponds to the laser chip. According to the laser module, the preparation process of the laser module is simplified, and the influence of high temperature in the welding process on the structure and performance reliability of the lens assembly and the laser chip is reduced.

This application relates to the field of oxide target technology, specifically disclosing an ITZO target and its preparation method. The preparation method of the ITZO target includes the following steps: applying an In-containing... 3+ Sn 4+ Zn 2+ A complexing agent is added to the solution to obtain a mixed solution; the mixed solution is then added dropwise to an ammonia solution and aged to obtain a precursor precipitate; the precursor precipitate is then subjected to spray pyrolysis, cold isostatic pressing, and warm isostatic pressing to obtain an ITZO preform; the ITZO preform is then subjected to programmed temperature calcination and programmed temperature cooling to obtain an ITZO target. This application obtains a uniformly composed and highly dense ITZO target by dynamically controlling the composition of the mixed gas during the programmed temperature cooling process through two static pressing treatments; using this target, a transparent conductive film with high visible light transmittance and excellent electrical properties can be prepared by sputtering, solving the technical problems of uneven composition, low density, and poor quality of sputtered films in existing targets.

The invention relates to the field of water conservancy projects, in particular to a cement block preparation device for water conservancy projects and a using method thereof.The cement block preparation device comprises a base, a plurality of mold assemblies are arranged on the base, two driving assemblies are symmetrically arranged above the base, and a transmission assembly is arranged in the base; the mold assembly comprises a mold frame, a fixing frame, a supporting rod and a pressing plate, the supporting rod is fixed to the upper end of the base, a bottom plate is fixedly arranged at the upper end of the supporting rod and can penetrate through the mold frame, the fixing frames are fixed to the top of the mold frame, and the multiple fixing frames are connected through connecting rods; at the moment, the bottom plate can eject out the shaped cement blocks in the mold frame, the cement blocks in the mold frame do not need to be demolded manually in sequence, labor can be saved, batch demolding can be achieved, and the demolding efficiency of the cement blocks can be improved.

The invention discloses a large-size tellurium-zinc-cadmium substrate surface processing method which comprises the following steps: obtaining a cut tellurium-zinc-cadmium wafer, and polishing a first surface of the tellurium-zinc-cadmium wafer until cutting fluctuation on the surface of the first surface is removed to obtain a first wafer; carrying out thinning treatment on the second surface of the tellurium-zinc-cadmium wafer, and then carrying out mechanical polishing on the second surface of the tellurium-zinc-cadmium wafer to obtain a second wafer; taking down the second wafer from the thinned slide, carrying out an X-ray diffraction appearance test to obtain an X-ray diffraction morphology graph corresponding to the second wafer, selecting an area with uniform contrast on the X-ray diffraction morphology graph, and marking the corresponding position of the second wafer; cutting the second wafer into a cadmium zinc telluride substrate in a regular shape according to the mark at the corresponding position of the second wafer; and placing the tellurium-zinc-cadmium substrate on the polishing slide glass for substrate polishing treatment, performing gluing protection on the polished tellurium-zinc-cadmium substrate, taking down the tellurium-zinc-cadmium substrate from the polishing slide glass, and cleaning the tellurium-zinc-cadmium substrate to obtain the processed tellurium-zinc-cadmium substrate.

The application belongs to the technical field of integrated circuit manufacturing, and relates to a circuit board drilling device with a stable clamping structure. The device comprises a shell, the shell is fixedly connected with a connecting frame, the connecting frame is slidably connected with a first electric sliding frame, the first electric sliding frame is slidably connected with a second electric sliding frame, the second electric sliding frame is slidably connected with a third electric sliding frame, the third electric sliding frame is fixedly connected with a shell body, the shell body is rotationally connected with a rotating shaft, the rotating shaft is provided with a drill bit, the rotating shaft is slidably and rotationally connected with a rotating cylinder, the rotating cylinder is rotationally connected with an upper pressing plate, the upper pressing plate is slidably connected with a lower pressing plate, and the lower pressing plate is rotationally connected with a rotating pressing ring. The circuit board is clamped by the rotating pressing ring and the supporting frame. When the circuit board is twisted around the drilling position under stress, the clamping block no longer clamps the circuit board. The circuit board drives the rotating pressing ring to rotate, reduces the stress damage of the circuit board drilling position, and even reduces the probability of deformation of the circuit board, so as to guarantee the accuracy of the circuit board drilling and improve the quality of the circuit board drilling.

This invention relates to the field of electronic packaging substrates, and particularly to an alumina ceramic substrate material, its preparation method, and its application. The alumina ceramic substrate comprises 90-99 wt% alumina and 1-10 wt% sintering aids. The sintering aids have the following composition: xB₂O₃·zSiO₂·yBi₂O₃, where 15≦x≦25, 50≦y≦70, 15≦z≦25, and x+y+z=100, where x:y:z is the mass ratio. The density of the alumina ceramic substrate is ≥3.8 g / cm³. 3 The alumina ceramic substrate of this invention has the following characteristics: surface roughness ≤ 0.35 μm, breakdown strength ≥ 35 kV / mm, bending angle ≥ 350 MPa, and thermal conductivity ≥ 25 W / m·K. It also features high density, uniform microstructure, good surface flatness, high mechanical strength, high breakdown strength, low dielectric loss, and high thermal conductivity.

This invention provides a dielectric ion exchange membrane, its preparation method, and its application, relating to the field of membrane material preparation technology. The dielectric ion exchange membrane includes a substrate and an ion exchange membrane coated on the surface of the substrate. The ion exchange membrane comprises polyvinyl alcohol, an ion system, a UV-curable monomer, and a photoinitiator. By using UV curing technology, the crosslinking process and solvent evaporation can be precisely controlled during membrane formation, ensuring a smooth membrane surface and avoiding membrane curling caused by uneven shrinkage. The introduction of the UV-curable monomer is to form a crosslinked network under UV irradiation, inhibiting macroscopic structural flow and creep of the ion exchange membrane during film formation and service, improving the mechanical stability of the membrane, and forming a stable crosslinked structure, thereby forming a structurally stable dielectric ion exchange membrane and effectively preventing membrane curling during drying.

The application provides a semiconductor structure preparation method, a semiconductor structure and a memory. The semiconductor structure preparation method comprises the following steps: providing a substrate, wherein the substrate comprises an array region, a core region and a boundary region located between the array region and the core region; forming a first isolation layer, wherein the first isolation layer is located in the array region and a second part of the boundary region adjacent to the array region; and forming a first conductive layer, wherein the first conductive layer is located in the core region and a first part of the boundary region adjacent to the core region. The first conductive layer is subjected to a planarization treatment to obtain a flat top surface. Therefore, the semiconductor structure preparation method, the semiconductor structure and the memory provided by the application can improve the flatness of the surface of the first conductive layer, thereby avoiding or reducing the influence on the structure and performance of the semiconductor structure and the memory.

The invention relates to quartz fiber joint glue based on methyl silicone oil and a preparation method thereof. The composition comprises the following substances: 60-85% of a dispergator, 4-12% of methyl silicone oil and 10-25% of polymethyl methacrylate molding powder, and the preparation method comprises the following steps: adding a set amount of the dispergator into a preparation barrel, and stirring; slowly adding a set amount of methyl silicone oil into the preparation barrel, and stirring for 5 minutes; and slowly adding a set amount of polymethyl methacrylate molding powder into the preparation barrel, and continuously stirring until the polymethyl methacrylate molding powder is completely dissolved, no white particles exist, and the solution is completely transparent and viscous. The adhesive has the advantages of no toxicity, small smell, simple and easily available formula, low cost, convenience in preparation and operation, no environmental pollution, no harm to human health, strong adhesion to quartz fiber yarns, high permeation speed, no hand sticking, good surface smoothness of the bonded quartz fiber product, no color difference at the bonded part after resin permeation compared with the color of quartz fiber, and no pollution to the environment. And the prepared composite material has no obvious color difference.

Provided is a composition capable of forming an easy-drying coating on an application surface in a paint, an ink, and an adhesive which mainly contain polymers, or a coating liquid for a positive electrode, a negative electrode, a separator, and the like of a lithium-ion secondary battery. The coating composition containing a filler, a binder, a thickener, and a solvent, wherein the binder is at least one selected from a diene rubber and a (meth)acrylate polymer; a viscosity of the coating composition is 1.0 × 106 Pa·s or less as measured at a shear rate of 0.01 / s; and the following thixotropy index (TI) is 1.1 × 106 or more: thixotropyindexTI=viscosityofthecoatingcompositionasmeasuredatashearrateof0.01 / s / viscosityofthecoatingcompositionasmeasuredatashearrateof10000 / s.

The present application provides an arc-shaped battery cell and an arc-shaped lithium battery. The arc-shaped battery cell includes a battery cell body, a positive electrode ear and a negative electrode ear. The battery cell body includes a positive electrode sheet, a first hot melt adhesive coating layer, a diaphragm, a second hot melt adhesive coating layer and a negative electrode sheet stacked in sequence. The first hot melt adhesive coating layer and the second hot melt adhesive coating layer are both bonded to the diaphragm, the positive electrode sheet is bonded to the first hot melt adhesive coating layer, and the negative electrode sheet is bonded to the second hot melt adhesive coating layer. The battery cell body is an arc-shaped structure, the positive electrode ear is welded to the positive electrode sheet, and the negative electrode ear is welded to the negative electrode sheet. The arc-shaped battery cell is easy to shape, has good surface flatness and good shaping effect.

The invention discloses a resin concrete drainage ditch internally provided with a decontamination mechanism, and relates to the technical field of resin concrete drainage ditches, the resin concrete drainage ditch comprises a drainage mechanism, the upper end of the drainage mechanism is provided with a leakage mechanism, and one end of the drainage mechanism is provided with a pipeline laying mechanism for treating sundries and changing the laying route of the drainage mechanism. The stone plates are laid on the same plane with the upper end of the water leakage gate, so that the surface flatness is ensured, the safety and the comfort degree when pedestrians or vehicles pass through are improved, water can naturally flow into the water leakage gate, and the water accumulation phenomenon is not prone to being caused. Water permeates into the lower portion of the partition plate through the water leakage gate and flows into the water passing pipeline through the through holes, the path design effectively guides rainwater or other liquid to be rapidly drained away, long-time water accumulation on the ground is avoided, and the partition blocks are used for supporting the partition plate so as to prevent the partition plate from deforming or collapsing due to pressure of stone plates above and protect the partition plate from being damaged.

The application discloses a large-size CdZnTe substrate surface processing method, comprising the following steps: obtaining a cut CdZnTe wafer, polishing a first surface of the CdZnTe wafer until the cutting fluctuation on the first surface is removed to obtain a first wafer; thinning a second surface of the CdZnTe wafer, and then mechanically polishing the second surface to obtain a second wafer; taking the second wafer off the thinning carrier, performing X-ray diffraction appearance testing, obtaining an X-ray diffraction appearance graph corresponding to the second wafer, selecting a region with uniform contrast on the X-ray diffraction appearance graph, and marking the corresponding position of the second wafer; according to the marking of the corresponding position of the second wafer, the second wafer is cut into a regular-shaped CdZnTe substrate; the CdZnTe substrate is placed on a polishing carrier for substrate polishing processing, the polished CdZnTe substrate is protected by gluing, and after being taken off the polishing carrier, the CdZnTe substrate is cleaned to obtain a processed CdZnTe substrate.

This application belongs to the field of lithium-ion battery technology, and specifically discloses an air-stable solid electrolyte. The solid electrolyte includes a core and a hydrophobic layer coating the surface of the core. The core comprises sulfide particles, and the thickness of the hydrophobic layer is 5–30 nm. The solid electrolyte according to the embodiments of this application has a surface-coated hydrophobic layer with low surface activity, exhibiting strong air stability and enabling the fabrication of solid-state batteries with excellent battery performance.

A process for producing a blow-molded foam is described. The process includes kneading (S1) a polyolefin-based resin containing a foaming agent mixed therewith in an extruder, and extruding (S3) a parison (32) between split mold blocks from a die slit (21) at an extrusion rate of 700 kg / h or more. Further, a blow-molded foam is described. The blow-molded foam has a wall formed in such a manner that a thermoplastic polyolefin-based resin containing a foaming agent mixed therewith is subjected to blow molding, wherein the wall has a closed cell structure including a plurality of foamed cells, the foamed cells have an average cell diameter of less than 300 µm in the thickness direction of the wall, an outer face of the wall has a center-line average surface roughness Ra of less than 9.0 µm, and the foamed cells have a cell diameter having a standard deviation of less than 40 µm in the thickness direction of the wall.

The invention belongs to the technical field of integrated circuits, and particularly relates to a gallium arsenide / beta-phase gallium oxide heterojunction ultraviolet photoelectric detector and a preparation method thereof. The preparation method comprises the following steps: growing a beta-phase gallium oxide film on a gallium arsenide substrate through PLD; depositing a layer of first metal material on the lower surface of the gallium arsenide substrate; depositing a layer of second metal material on the surface of the beta-phase gallium oxide thin film; and annealing the obtained device to enable the first metal material and the second metal material to form ohmic contact so as to complete the preparation of an electrode, thereby obtaining the beta-Ga2O3-GaAs heterojunction ultraviolet photoelectric detector. According to the Ga2O3 heterojunction ultraviolet detector, the separation capacity of photon-generated carriers is enhanced through the heterojunction, good thin film crystallization quality, few oxygen vacancy defects and good surface flatness are formed, and practical application of the Ga2O3 heterojunction ultraviolet detector is promoted.

Provided is a coating composition that can be applied with excellent high-speed coating properties and surface smoothness in a paint, an ink, and an adhesive which mainly contain polymers, or a coating liquid for a positive electrode, a negative electrode, a separator, and the like of a lithium-ion secondary battery. The coating composition containing a filler, a binder, a thickener, and a solvent, wherein an aspect ratio of the filler is 2 or more; the binder is at least one selected from a diene rubber and a (meth)acrylate polymer; a viscosity of the coating composition is 1.0 × 106 Pa·s or less as measured at a shear rate of 0.01 / s; and the following thixotropy index (TI) is 1.1 × 106 or more: [thixotropy index (TI)] = [viscosity of the coating composition as measured at a shear rate of 0.01 / s] / [viscosity of the coating composition as measured at a shear rate of 10000 / s].

The invention discloses a light-emitting device, a preparation method of the light-emitting device and electronic equipment, and the light-emitting device comprises an anode and a cathode which are oppositely arranged, a light-emitting layer arranged between the anode and the cathode, and a hole function layer arranged between the anode and the light-emitting layer, the material of the hole function layer comprises an organic hole function material and a magnetic material comprising first to Nth magnetic nanoparticles, the average particle size of the first to Nth magnetic nanoparticles is gradually increased, and N is a positive integer greater than or equal to 2; the first magnetic nano particles to the Nth magnetic nano particles in the hole function layer are sequentially arranged in the direction from the anode to the light-emitting layer, electron-hole transmission balance of the light-emitting device is promoted, and therefore the photoelectric performance of the light-emitting device is improved, and the service life of the light-emitting device is prolonged.

The utility model relates to the technical field of storage battery box covers of electric buses, in particular to an appearance structure of a storage battery box cover of an electric bus, which comprises a storage battery box cover main body, an access door is rotatably connected to the outer side of the storage battery box cover main body, and a plurality of groups of connecting components are arranged on the outer side of the access door; the connecting assembly is used for limiting connection of the access door and the storage battery box cover main body, the connecting assembly is composed of a rotating part, a clamping part and a limiting rod, the rotating part is rotationally connected to the interior of the access door, and the clamping part is fixedly connected to one end, extending into the storage battery box cover main body, of the rotating part; compared with an existing box cover appearance structure, the box cover appearance structure has the advantage that the overall practicability of the box cover appearance structure can be improved through the design.

The invention relates to quartz fiber joint glue based on spindle oil and a preparation method thereof. The glue comprises the following components: 70-85% of dispergator, 8-16% of spindle oil and 10-20% of polymethyl methacrylate molding powder, and during preparation, a set amount of dispergator is added into a preparation barrel and stirred; slowly adding a set amount of spindle oil into the preparation barrel, and stirring for 5 minutes; and slowly adding a set amount of polymethyl methacrylate molding powder into the preparation barrel, and continuously stirring until the polymethyl methacrylate molding powder is completely dissolved, no white particles exist, and the solution is completely transparent and viscous. The adhesive has the advantages of no toxicity, small smell, simple and easily available formula, low cost, convenience in preparation and operation, no environmental pollution, no harm to human health, strong adhesion to quartz fiber yarns, high permeation speed, no hand sticking, good surface smoothness of the bonded quartz fiber product, no color difference at the bonded part after resin permeation compared with the color of quartz fiber, and no pollution to the environment. And the prepared composite material has no obvious color difference.