141results about How to "Reduce scatter" patented technology

The invention relates to a scraper conveyor with a coal quantity monitoring function, and relates to the technical field of coal mining machinery, the scraper conveyor comprises a rack, a driving assembly, a monitoring assembly and a flattening assembly, the rack is rotatably connected with a plurality of rotating rollers, the plurality of rotating rollers are uniformly arranged in the conveying direction of the rack, and the plurality of rotating rollers are jointly sleeved with a conveying belt; the driving assembly is arranged on the rack and used for driving the conveying belt to rotate. The monitoring assembly is arranged on the rack and used for monitoring the height and gradient of a coal pile. The flattening assembly is arranged on the rack, located on the side, away from the input end of the rack, of the monitoring assembly and used for reducing the height of the coal pile. The method has the effect of improving the transportation efficiency.

The invention discloses a collagen-based and high-transparency matrix for cornea thickening and a preparation method of the collagen-based and high-transparency matrix. The preparation method comprises the following steps: assembling a collagen composite solution into a collagen matrix implant on a set curvature mold through electrochemical deposition; the collagen composite solution is prepared from collagen, glacial acetic acid, hydrogen peroxide, heparin and water; putting the obtained collagen matrix implant and a mold into a cross-linking agent solution for cross-linking; cleaning the residual cross-linking agent after completion, separating the collagen matrix implant from the mold, and placing the collagen matrix implant under an ultraviolet light source for cross-linking to obtain a double-cross-linked collagen matrix implant; and soaking the double-crosslinked collagen matrix implant in a nerve growth factor solution, and performing absorption and combination to obtain the collagen-based and high-transparency matrix for cornea thickening. According to the invention, an electro-deposition assembly technical scheme is adopted, the diameter and thickness of collagen assembly fibers are adjusted and controlled through electric field energy, and the collagen assembly fibers are orderly and regularly arranged, so that scattering and refraction of light are reduced, the light transmittance of cornea is increased and can reach more than 90%, and the problem of light blocking caused by materials is effectively avoided. Operation is matched with femtosecond equipment, operation is easy, consumed time is short, and trauma is small.

The utility model discloses a ditching and fertilizing integrated device, which relates to the technical field of planting equipment and comprises a ditching mechanism and a fertilizing mechanism. The ditching mechanism comprises a handle and a ditching plough; the furrow plough is fixedly arranged at one end of the handle; the fertilizer spraying mechanism comprises a fertilizer box, a fertilizer outflow pipe, a push switch and a plugging sheet; the fertilizer box is fixedly arranged on the handle and is provided with a containing cavity, a feeding hole and a discharging hole; the fertilizer outflow pipe is communicated with the discharge hole; the other end of the fertilizer outflow pipe is positioned on the rear side of the furrow plough; a sliding groove is formed in the fertilizer outflow pipe, and the push switch is arranged in the sliding groove in a sliding mode; the blocking piece is rotationally arranged in the fertilizer outflow pipe, and the rotating axis of the blocking piece passes through the center of the blocking piece; the plugging sheet is connected with the push switch through a connecting piece; when the push switch moves in the direction away from the plugging piece, the push switch can pull the plugging piece through the connecting piece and enable the plugging piece to rotate. The working efficiency can be improved, and the labor input is reduced.

The invention relates to the technical field of silica gel materials, and discloses a high-transparency silica gel material for glasses legs and a preparation method of the high-transparency silica gel material. The silica gel material comprises the following raw materials in parts by weight: 100 parts of vinyl silica gel, 15-25 parts of vinyl silicone oil, 3-6 parts of modified silicone oil, 15-25 parts of reinforcing filler, 1-3 parts of an antioxidant and 2-5 parts of a cross-linking agent, the silica gel material is prepared by taking vinyl silica gel as a matrix, adding reinforcing filler, modified silicone oil and other auxiliaries and mixing and vulcanizing, and the silica gel material has high transparency and excellent hydrophobicity and mechanical properties, so that the silica gel material has a good application prospect when being applied to glasses legs.

The preparation method comprises the following steps: S1, in an inert atmosphere, adding hydroxyl-terminated polybutylene and toluene diisocynate into a reaction kettle, and generating a polyurethane prepolymer under the catalysis of dibutyltin dilaurate; s2, adding a chain extender into the polyurethane prepolymer to carry out chain extension reaction; s3, adding a waterproof functional body, methacryloyloxypropyl polyhedral oligomeric silsesquioxane and a silane coupling agent K560 into the polyurethane subjected to the chain extension reaction, uniformly mixing, and then forming a film, so as to obtain the high-waterproofness waterproof film. The waterproof film of the present invention has excellent acoustic sensitivity and waterproof performance.

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

This utility model belongs to the field of crane technology, specifically a crane for large water meter testing. It includes a crane body with an oil tank fixedly attached to its top. The oil tank has an oil inlet at its top. A first oil pump is connected to the side wall of the oil tank. A connecting plate is connected to the bottom of the first oil pump. Multiple brushes are fixedly attached to the bottom of the connecting plate. The brushes are arranged through the crane body. A fixing plate is provided at the bottom of the crane body. A first servo motor is fixedly attached to the side wall of the fixing plate. A drive wheel is fixedly attached to the output end of the first servo motor. The drive wheel and the crane body are in a rolling connection. The brushes and the drive wheel are correspondingly arranged. A cable reel is fixedly attached to the bottom of the fixing plate. A second servo motor is fixedly attached to the side wall of the cable reel. A pair of lifting ropes are slidably connected to the bottom of the cable reel. A hook is fixedly attached to the bottom of the lifting ropes. Multiple first circular holes are opened inside the crane body.

The utility model relates to the technical field of retroreflective sheeting provides an environmental protection type hard PVC retroreflective sheet, solves the problem that the reflectivity of existing retroreflective sheet is low, and the optical performance is relatively weak, and the surface layer anti -peeling impact force is not good, including the retroreflective sheet body, the retroreflective sheet body includes the protective surface layer, prism air microcapsule layer, degradable back film layer from top to bottom sequentially laminated, the prism air microcapsule layer includes wall material and core material, the core material includes prism reflection matrix layer and air layer, the protective surface layer is by PVC material layer and acrylic material layer composite, the prism reflection matrix layer is by several microangle pyramid prism structure unit close arrangement, the microangle pyramid prism structure unit is cutting obtains to cubic angle pyramid prism.

The utility model relates to garbage treatment technical field discloses a combined feeding system, including frame, the frame front end is provided with feeding mechanism, the frame inside fixedly connected with push mechanism, the frame inside is provided with the material collecting bin, the feeding mechanism includes two big arms connecting shaft, two big arms connecting shaftes all are rotatively connected in the outside of frame, the big arms connecting shaft is rotatively connected with hopper away from frame one end, the hopper outside rotatively connected with connecting rod axle, the connecting rod axle is rotatively connected in the outside of frame away from hopper one end, two big arms connecting shaftes between fixedly connected with the turnover pivot. In the utility model, the scheme does not need to build double -deck station house or deep foundation pit, and the frame is used as the basis support feeding mechanism, push mechanism and material collecting bin, after the feeding mechanism receives the material on the ground, the garbage is poured into the material collecting bin through lifting and overturning, and the push mechanism pushes the garbage to the compression box, and the construction cost and construction difficulty are greatly reduced.

The invention relates to the technical field of particle accelerators, in particular to a compact rotary thin-wall beam transmission vacuum system and a design method. The beam transmission vacuum system comprises: a first transmission unit, one end of which is provided with a first bifurcated thin-wall dipolar iron vacuum chamber to form a first branch and a second branch; one end of the second transmission unit is connected with the second branch, and a second bifurcated thin-wall dipolar iron vacuum chamber and a third bifurcated thin-wall dipolar iron vacuum chamber are sequentially arranged in the second transmission unit to form a third branch, a fourth branch and a fifth branch; the fixed treatment terminal is connected with the first branch; and rotating the treatment terminal to provide the beam to one of the plurality of treatment rooms in an alternative manner. According to the invention, an intensive architecture that a single rotary treatment terminal provides particle beams for a plurality of treatment rooms at the same time is adopted, so that the equipment manufacturing cost is greatly reduced, the equipment utilization rate is improved, and the treatment cost is reduced.

The utility model provides an ultra-radio frequency anti-aging transdermal collagen light beauty instrument. The ultra-radio-frequency anti-aging transdermal collagen light beauty instrument comprises a shell, and a skin contact area is formed at one end of the shell; the optical assembly comprises a halogen lamp tube, a light filtering part and a light transmitting part which are sequentially arranged at intervals, the halogen lamp tube and the light filtering part are arranged in the shell, at least part of the light transmitting part is exposed out of the skin contact area, and the light filtering part allows near-infrared light emitted by the halogen lamp tube to pass through and prevents non-near-infrared light emitted by the halogen lamp tube from passing through; the light transmitting piece is used for enabling near-infrared light formed after filtering of the light filtering piece to irradiate out of the shell, the halogen lamp tube and the light filtering piece are arranged in parallel, and the distance between the halogen lamp tube and the light filtering piece is not smaller than 2 mm; the controller is arranged in the shell, and the halogen lamp tube is electrically connected with the controller so as to control the halogen lamp tube to work. According to the technical scheme, the problems that in the prior art, a beautifying instrument is low in use safety and poor in beautifying effect are solved.

The application discloses an impact-resistant high-thermal-conductivity polyphenylene sulfide composite material and a preparation method thereof, and relates to the technical field of plastic processing. The preparation method comprises the following steps: S1, preparation of a highly oriented PPS fiber insert; and S2, preparation of the impact-resistant high-thermal-conductivity PPS composite material. The application provides an impact-resistant high-thermal-conductivity PPS composite material and a preparation method thereof. Firstly, the viscoelasticity of PPS resin is improved by using high-melt-viscosity and high-temperature-resistant aromatic polyamide, the interfacial compatibility of PPS / aromatic polyamide is enhanced by using a functionalized polysulfone-based resin as a compatibilizer, so that the stretchability and the tensile orientation degree of PPS are improved; PPS composite fibers are obtained by using a melt spinning machine, and a fiber solid-phase high-multiple-stretching-annealing forming process is established, so that the high-toughness and highly oriented PPS composite fiber material is obtained.

This invention discloses a protective garment for epicondylitis of the humerus based on an antibacterial and thermally conductive composite material, belonging to the field of medical protective gear technology. It includes a forearm support and an upper arm support, which are rotatably connected by an adjusting mechanism. The upper arm and forearm sleeves are 3D printed using an antibacterial and thermally conductive composite material, which comprises a polylactic acid matrix, a graphene oxide-silver nanoparticle-carbon nanotube ternary composite filler, and phase change microcapsules, with a thermal conductivity of 1.5-4.0 W·m. ‑1 ·K ‑1 With an antibacterial rate of ≥95%, it solves the problems of poor thermal conductivity, lack of antibacterial properties, and uneven heat therapy in existing protective gear.

The invention belongs to the technical field of semiconductors, relates to a high electron mobility transistor (HEMT), and particularly provides a high-voltage GaN high electron mobility transistor with a stepped electric field auxiliary voltage-resistant layer, which is used for solving the problems of low breakdown voltage, high specific on-resistance, current collapse effect and the like of the traditional GaN HEMT device. The invention creatively provides a stepped electric field auxiliary voltage-withstanding layer structure for improving the breakdown voltage of the device, so that the electric field distribution between the grid electrode and the drain electrode of the device is more uniform, and the problem of electric field concentration caused by the fact that polarized charges are attracted by the grid electrode is solved, thereby greatly improving the breakdown voltage of the device and improving the reliability of the device. On the basis, the influence of current collapse on the device is weakened, and the reliability of the device is improved; according to the invention, a new design direction and thought are provided for the high-voltage GaN HEMT device, and commercial application of the high-voltage GaN HEMT device is facilitated.

The utility model discloses an optical lens group and a vehicle lamp using the same. The optical lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side along an optical axis direction, the first lens is a glass lens, and the second lens and the third lens are plastic lenses. The image side surface of the first lens, the object side surface and the image side surface of the second lens and the object side surface and the image side surface of the third lens are all of aspheric surface structures; the object side surface of the first lens is a plane and the image side surface is a convex surface; the object side surface of the second lens is a concave surface and the image side surface is a convex surface; the third lens element has a concave object-side surface and a convex image-side surface. The optical lens group provided by the utility model is beneficial to miniaturization and light weight of a lamp, the production cost is reduced, better image definition and details can be obtained, and the imaging quality is high.

The utility model relates to sealing device technical field, concretely relates to a kind of automatic sealing device of powder material sampling barrel, including adjustable height base, the upper portion of base is provided with support plate, the upper surface of support plate is provided with the sampling barrel body for receiving material, the top of sampling barrel body is detachably provided with receiving pipe, support device for fixing the height of sampling barrel body is provided between support plate and base, receiving pipe detachably arranged on the top of sampling barrel body and good sealing design, avoid the leakage of powder material in repeated sampling process, protect the environment, ensure the health of operator.

The present application relates to the technical field of polyester material modification, and particularly relates to a high-transparency polyethylene naphthalate material, a preparation method and application, aiming at the problems of fast crystallization rate of the PEN material in the process of processing and molding, easy crystallization of thick products, light transmittance reduction caused by the crystallization, and insufficient material toughness, the present application introduces a diol monomer containing a side group and a flexible chain segment diol monomer into the PEN melt polycondensation process for copolymerization, wherein the diol containing a side group introduces a steric hindrance structure in the molecular chain to destroy the regular packing of the PEN molecular chain, thereby inhibiting the material crystallization behavior and improving the light transmittance of the thick product; the flexible diol introduces a flexible chain segment in the molecular chain to increase the free volume of the molecular chain and improve the molecular chain movement ability, thereby improving the material toughness. Through the above-mentioned synergistic copolymerization modification method, the crystallization tendency of the PEN material can be effectively reduced, the obtained PEN thick product has excellent light transmittance and toughness at the same time, and is suitable for the preparation of high-performance transparent polyester products.

This invention relates to the field of lighting technology, and in particular to a white light supercontinuum fiber combiner, a light-emitting unit, and a method for fabricating the same, including N 2 One first input optical fiber, (N-1) 2 The first input fibers consist of a second input fiber and a square output fiber. Multiple first input fibers are arranged in a square array. One or more second input fibers are respectively disposed in the gaps formed between the multiple first input fibers. The square output fiber is fused to the tapered fused ends of the first and second input fibers. N is a natural number greater than or equal to 2. This invention's white light supercontinuum fiber combiner can transmit spectral energy with high quality, offering superior color reproduction compared to traditional white light illumination. It also meets the application requirements for high illumination brightness, effectively solving the problem of insufficient brightness in existing lighting devices.

The invention relates to the field of semiconductor material physical property regulation and control and power device optimization design, and particularly discloses a method for regulating and controlling the carrier mobility of beta-type gallium oxide (beta-Ga2O3) based on triaxial stress. Gallium oxide serving as a fourth-generation ultra-wide band gap semiconductor has high breakdown field strength and good stability, but the carrier mobility of the gallium oxide is low, and application of the gallium oxide in high-power devices is limited. The electron mobility of beta-Ga2O3 is improved from 85.8 cmV <-1 > s <-1 > to 170.9 cmV <-1 > S <-1 > by applying-4% of compressive strain to 4% of tensile strain and is improved by nearly 100%, and the mechanism that the energy band slope is increased, the group velocity is increased, the effective mass is reduced and the scattering rate is reduced due to stress is disclosed. The method is simple in process, low in cost and suitable for manufacturing high-performance wide-bandgap semiconductor power electronic devices.

The application provides a cover plate and a preparation method thereof and an electronic device. The cover plate comprises: an anti-glare layer, the anti-glare layer comprising a substrate and a microstructure layer, the microstructure layer being arranged on the surface of the substrate along the thickness direction of the substrate; an anti-reflection layer, the anti-reflection layer being arranged on one side of the anti-glare layer, the anti-reflection layer being a multilayer structure, the refractive index of the multilayer structure gradually decreasing from the side close to the anti-glare layer to the side away from the anti-glare layer; and an anti-fingerprint layer, the anti-fingerprint layer being arranged on the side of the anti-reflection layer away from the anti-glare layer. The cover plate can further reduce the reflectivity, improve the eye protection effect and appearance performance on the basis of ensuring the anti-glare effect.

This disclosure relates to the field of underwater optical imaging technology, specifically providing an underwater microscopic observation instrument, including a light source chamber and an imaging chamber connected by a focusing mount. The imaging chamber contains an imaging unit for imaging underwater targets between the light source chamber and the imaging chamber. The light source chamber includes a first housing, optical components, and a driving mechanism. The optical components include a laser and a dimming assembly. The laser outputs a pulsed laser beam. The dimming assembly includes a reflector, a conical mirror, and a lens arranged sequentially along the optical axis of the pulsed laser beam. The conical reflector of the mirror reflects the pulsed laser beam, forming a first reflected beam. The first reflected beam is reflected by the inner surface of the reflector to form a conical second reflected beam, which passes through the lens and converges on the optical axis to form an illumination layer. The driving mechanism is used to adjust the position and thickness of the illumination layer to improve the clarity of the underwater imaging of the target by the imaging chamber.

The present application relates to the technical field of millimeter wave communication, and particularly relates to a V / W wave band low-loss metal waveguide and a preparation method thereof. The preparation method provided by the present application combines metal additive manufacturing, inner wall conductive metal deposition, super-smooth inner surface polishing and external single-point diamond turning technology. The waveguide manufactured by the composite process chain comprises an aluminum-magnesium (zirconium) alloy waveguide structure manufactured by laser beam melting additive manufacturing, a copper (silver) inner wall coating deposited by chemical reduction plating technology, an inner wall surface with a roughness of less than 50 nm Ra processed by abrasive flow machining, and a self-aligning flange with a flatness of less than 0.1 microns and a butt joint surface roughness of less than 20 nm Ra processed by super-precision machining. The present application improves the electrical performance, thermal interface consistency and assembly accuracy. The preparation method of the present application solves the problems of high insertion loss of the existing waveguide structure in high-frequency applications, high-cost mode coupling caused by large structural assembly errors, uncontrollable inner wall roughness and the like.

The invention relates to the technical field of semiconductors, and provides a light-emitting diode, a preparation method thereof and a communication system. The light emitting diode comprises a substrate, a first semiconductor layer, an active layer and a second semiconductor layer which are stacked in sequence. The active layer comprises at least one group of quantum well layers and quantum barrier layers which are periodically and alternately stacked; the quantum well layer comprises an In component; the active layer further comprises at least one covering layer; the covering layer is located between the quantum well layer and the quantum barrier layer; the material of the covering layer is selected from a III-V group nitride semiconductor material, and the bond energy of a chemical bond formed by a metal element contained in the III-V group nitride semiconductor material and a nitrogen element is higher than the bond energy of In-N formed by an indium element and the nitrogen element in the quantum well layer. Through the above arrangement, mutual diffusion of In atoms in the quantum well containing the In component is effectively inhibited, a clear interface of the quantum well layer is maintained, and high-speed LED communication is further realized.

This invention relates to a high thermal conductivity rare-earth copper-chromium alloy and its preparation method, belonging to the field of alloy material technology. The chemical composition of the copper-chromium alloy includes: 0.5-1.0 wt% Cr, 0.01-0.05 wt% Zr, 0.005-0.015 wt% Ce, no more than 0.005 wt% unavoidable impurity elements, and the balance being Cu. By adding trace amounts of cerium and zirconium to the copper-chromium alloy, this invention not only utilizes the grain boundary purifying effect of cerium in the alloy system and reduces the scattering of thermally conductive electrons by solid-solution Cr and Zr atoms, thereby significantly reducing the adverse effects of solid-solution chromium and zirconium atoms on the thermal conductivity of copper, but also utilizes the synergistic effect of zirconium and chromium to significantly improve the thermal conductivity, stress relaxation resistance, and high-temperature strength of the copper-chromium alloy. The high thermal conductivity rare-earth copper-chromium alloy of this invention has excellent thermal conductivity and high-temperature strength, making it suitable for large-scale application as an electrical contact material.