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Aquosity polyacrylate dispersion utilized in print and prepn. method
A water polyacrylate emulsion for printing is prepared through proportionally mixing water, emulsifier, trigger, perspex, acrylic acid (methyl) acrylate, and polymerizing at 70-85 deg.C for 5-8 hr. Its advantages are high solid content, small diameter of emulsoid particles, low viscosity, high stability, non-toxic and no environmental pollution.
Owner:NANKAI UNIV
Method and system for implementing safety isolation measures in maintenance of intelligent power station relay protection equipment
The invention discloses a method for implementing safety isolation measures in maintenance of intelligent power station relay protection equipment, which is applied to a handheld terminal and comprises the steps of substation information configuration, secondary circuit display, secondary safety measure ticket automatic generation, system parameter configuration, communication mode setting and relay protection maintenance, wherein the relay protection maintenance comprises the steps of secondary safety measure ticket selection; safety measure execution, namely, sequentially executing and automatically checking according to a preset secondary safety measure ticket step sequence, wherein the automatic checking refers that the system automatically judges whether the currently executed safetymeasure step is executed successfully or not, and the judgment basis is whether the current states of all soft pressing plates associated with the current safety measure step are consistent with an expected result set when the secondary safety measure ticket is automatically generated or not; automatic safety measure recovery; and anti-error checking. The invention further provides a method for implementing safety isolation measures in maintenance of the intelligent power station relay protection equipment. According to the invention, the safety measures can be automatically implemented according to the secondary safety measure ticket, and the system faults can be automatically and accurately analyzed, thereby having a huge application market.
Owner:STATE GRID ANHUI ELECTRIC POWER
Ultrathin metal lithium electrode, preparation method thereof, and application of ultrathin metal lithium electrode as negative electrode of secondary lithium battery
ActiveCN112928238AExcellent Coulombic efficiency and cycle stabilityGood securityCell electrodesLi-accumulatorsMetallic lithiumHigh energy
The invention discloses an ultrathin metal lithium electrode, a preparation method thereof, and application of the ultrathin metal lithium electrode as a negative electrode of a secondary lithium battery. The ultrathin metal lithium electrode comprises a metal lithium layer and a current collector layer, the surface of the current collector layer is coated with the metal lithium layer, the thickness of the metal lithium layer is 1-100 [mu] m, The metal lithium layer comprises metal lithium, an additive component and a framework component; the additive component comprises an inorganic material of which the surface contains halogen element functional groups, and / or an inorganic material which can be compatible with liquid metal lithium or lithium alloy; and the framework component is a nano material with a one-dimensional and / or two-dimensional structure, and the nano material with the one-dimensional or two-dimensional structure can form a three-dimensional network structure in the metal lithium layer. The ultrathin metal lithium electrode can be used as a negative electrode to manufacture a novel lithium battery with matched positive and negative electrode capacities, and has better safety and higher energy density due to the fact that the ultrathin metal lithium electrode does not contain excessive lithium.
Owner:BEIHANG UNIV
SERS-SPR dual-mode sensor as well as preparation method and application thereof
ActiveCN111812075AStrong resonance enhancement effectExcellent optical propertiesRaman scatteringNucleic acid detectionA-DNA
The invention discloses an SERS-SPR dual-mode sensor for nucleic acid detection. The SERS-SPR dual-mode sensor comprises a detection chip and a DNA probe, wherein the detection chip is a silver nanopore-nanorod array substrate of which the surface is modified with tetrahedral DNA. The invention further discloses a preparation method and a detection method of the SERS-SPR dual-mode sensor. The detection method comprises the following steps of: sequentially mixing the detection chip with a to-be-detected liquid sample and a DNA probe solution; forming a 'detection chip-target DNA-DNA probe' compound through complementary pairing; and then sequentially carrying out a transmission spectrum test and an SERS test. According to the detection method, high-sensitivity and specific dual-mode sensingdetection on nucleic acid in serum is realized through wavelength change of characteristic valleys of a transmission spectrum, an SERS spectrum and characteristic signal intensity values of the SERSspectrum, the detection limits of the SERS sensing mode and the SPR sensing mode reach the sub-femtomole per liter magnitude and the sub-picomole per liter magnitude respectively, and the nucleic acidmarker can be detected in complex environments such as serum.
Owner:NANJING UNIV OF POSTS & TELECOMM
Boiler flue gas recirculation dehumidification device
InactiveCN106669379ASimple structureImprove dehumidification efficiencyGas treatmentDispersed particle separationCombustionFlue gas
The invention relates to a boiler flue gas recirculation dehumidification device in order to solve the security risks caused by the presence of water vapor in recirculated flue gas, and belongs to the technical field of boiler flue gas recirculation. The boiler flue gas recirculation dehumidification device is characterized in that a defogger is fixedly arranged in the middle rear part of the inside of a flue gas mixing tank and consists of a plurality of baffles arranged in parallel and longitudinally and spaced apart from each other; the direction of the space between the baffles is consistent with the flow direction of mixed gas, and one end of a groove formed by baffling of the baffles is fixedly connected with a bottom board of the flue gas mixing tank; the bottom board of the flue gas mixing tank tilts down from the head end to the tail end, and a water outlet pipe is arranged at the bottommost part of the bottom board. The boiler flue gas recirculation dehumidification device provided by the invention has the beneficial effects of simple structure, high dehumidification efficiency, and low pressure loss. In the process of dehumidification, the combustion air and hot flue gas are fully mixed, and the hidden dangers caused by humidification in a flue gas recirculation system are completely eliminated, so the application market is huge.
Owner:SHANGHAI WISEBOND TECH
Intelligent socket capable of reducing standby energy consumption based on machine learning
InactiveCN109346887AReduce standby power consumptionEfficient designComputing modelsCoupling device detailsElectricityControl signal
The invention provides an intelligent socket capable of reducing standby energy consumption based on machine learning. The intelligent socket comprises a voltage sensor, a multi-channel current sensor, an ESP32 wireless communication module, an upper computer module and a solid-state relay, and relates to the technical field of electricity utilization. The voltage sensor and the multi-channel current sensor are used for detecting the voltage and the current of a power supply line in real time, and sending a detection signal to the ESP32 wireless communication module; the upper computer modulereceives the signal of the ESP32 wireless communication module, and then sends a quantized control signal to the ESP32 wireless communication module; and the solid-state relay receives the control signal of the ESP32 wireless communication module. Different power supply modes are selected according to different electric equipment, manual intervention is not needed, and potential safety hazards caused by mismatching of the power supply are avoided; and when the electric appliance enters a standby state, the electric appliance can be automatically switched off so as to reduce the consumption caused by the standby state, so that the purposes of energy conservation, emission reduction, home intelligentization and safety electricity utilization are finally achieved.
Owner:CENT SOUTH UNIV
Open pit coal mine rock dump-based waste rock soil formation method for land reclamation
ActiveCN111448867ASignificant environmentSignificant comprehensive benefitsBio-organic fraction processingExcrement fertilisersSoil scienceWaste dump
The invention belongs to the technical field of ecological environment control and discloses an open pit coal mine rock dump-based waste rock soil formation method for land reclamation. The waste rocksoil formation method is a technique as follows: on the basis of evaluating and calculating lithologic differences and spatial distribution of different sedimentary rocks on a minable seam of an openpit coal mine, staggered excavation and classified stripping are carried out on different types of rocks (waste rocks) on the minable seam; the waste rocks are transported and stacked at different positions of a rock dump (waste dump) in a classified manner; layered compaction is carried out; and existing weathered coal, carbonaceous shales, shales, mudstones and the like of the open pit coal mine are stacked on a surface layer to replace soil for land reclamation, and are mixed and fermented with kitchen wastes and household wastes of mine workers for nutrification and organification, thereby completing waste rock soil formation. A treatment method for waste rock soil formation, waste rock reclamation and household waste harmless treatment of the workers for green mining is achieved; a novel soilless land reclamation mode for land reclamation of the open pit coal mine is innovatively formed; and the waste rock soil formation method has great environmental effect, economic effect andsocial effect.
Owner:XIAN CENT OF GEOLOGICAL SURVEY CGS
Ordered mesoporous zirconium phosphate material, preparation method and application thereof to wastewater
InactiveCN108654580ALarge adsorption reaction contact areaImprove adsorption capacityWaste water treatment from quariesOther chemical processesSorbentThree-dimensional space
The invention discloses an ordered mesoporous zirconium phosphate material, a preparation method and application thereof to wastewater. A templating agent is used as a structure-directing agent for synthesizing mesoporous zirconium phosphate, so that an ethanol solvent is slowly volatilized, and the zirconium phosphate adopting a three-dimensional space is synthesized by one step; the zirconium phosphate material adopting a mesoporous structure is used as an adsorbent, uranyl ions in a solution are chemically adsorbed under a constant-temperature shaking condition, and the uranyl ions in the wastewater are rapidly complexed with phosphoric acid functional groups on the surface of the material, so that the uranylions are adsorbed more efficiently; the preparation method of the ordered mesoporous zirconium phosphate material is simple and low in cost; the ordered mesoporous zirconium phosphate material can meet the need of treating uranium in the wastewater of a nuclear power plant, anda treated sample is easy to recycle; the ordered mesoporous zirconium phosphate material has a relatively good application market.
Owner:NANJING UNIV OF SCI & TECH
Urban air quality monitoring method based on mobile multi-source perception
ActiveCN112508056AAchieve synchronizationReduce noiseCharacter and pattern recognitionComplex mathematical operationsData modelingSimulation
According to the urban air quality monitoring method based on mobile multi-source perception, in the stage of obtaining mobile air quality parameters, an environment monitoring sensor and a combined positioning module are used for recording the time position of a mobile carrier (a pedestrian wearable type, a shared bicycle, public transport and an unmanned aerial vehicle) at each collection pointand the environment parameters of the position; in the multi-source data processing stage, a data processing and storing module is used for carrying out heterogeneous fusion, denoising and filtering,space-time interpolation and database construction on the mobile air quality data; in the environment space-time analysis and evaluation stage, a clustering algorithm and thermodynamic diagram visualization are used for carrying out data modeling and space-time analysis on multi-source air data. Compared with traditional environment fixed monitoring, the method has the advantages that the number and cost of fixed monitoring nodes are greatly reduced in a mobile and multi-carrier data acquisition mode, noise is reduced through Kalman filtering, discrete points are interpolated to uniform grid space discrete points through a weighted K-nearest neighbor interpolation algorithm to draw a curved surface, and visualization is achieved.
Owner:SOUTHEAST UNIV
Aluminum alloy material and surface treatment method thereof
The invention relates to an aluminum alloy material and a surface treatment method thereof. The aluminum alloy material respectively comprises the following components: lithium, zinc, copper, silicon, manganese, magnesium, titanium, boron, germanium, molybdenum and the balance of aluminum. The surface treatment method of the aluminum alloy material comprises the following steps: (1) removing a surface oxidation film of the aluminum alloy material; and (2) carrying out chemical plating on the aluminum alloy material obtained from the step (1). The aluminum alloy material disclosed by the invention can be used for integrally enhancing various aspects of properties of the aluminum alloy material, enhancing the mechanical strength and tensile property of an aluminum alloy and enhancing the tensile strength, yield limit and heat resistant property of the aluminum alloy material. The surface treatment method disclosed by the invention is conductive to improving the surface stability of the aluminum alloy, thereby achieving more brightness and good beauty of the surface of the aluminum alloy material.
Owner:WUXI LEHUA AUTOMATION TECH
Electric flocculation method for pretreating high-concentration polluted wastewater of glyphosate
InactiveCN105329989ALess mudThe treatment process is simple to operateWater contaminantsWater/sewage treatmentHigh concentrationElectrolysis
The invention discloses an electric flocculation method for pretreating high-concentration polluted wastewater of glyphosate. The method comprises the following steps that after the glyphosate wastewater is filtered, suspended solids are removed, the pH value of the wastewater is adjusted to be 7+ / -0.2, a water pump is started to pump the wastewater into an electrolytic bath, the electrolytic bath is electrified, water flow is controlled to adjust time for an electrolytic reaction, after the reaction is completed, output water stands still to be deposited for 0.5-1 h, foam on the liquid level is scraped, and upper clean water discharged after bottom sludge is removed is treated water. According to the method, aluminum plates are used for serving as a negative pole and a positive pole of electric flocculation to treat the glyphosate wastewater, and under the condition of the optimum technology parameters, speed of the pollutant removing effect is higher, efficiency is higher, and cost is lower in comparison with a conventional treatment method; the wastewater COD removing rate reaches 70.3% within a short time, the TP removing rate reaches 75.4%, basically, chromaticity and turbidity can be removed completely, the output water is clear, operation is easy, and automatic management can be achieved.
Owner:SOUTH CHINA UNIV OF TECH +1
Non-triangular knitting machine and weaving method thereof
ActiveCN107904773AWhether the action is in place guaranteeSimple structureWeft knittingControl systemBiomedical engineering
The invention discloses a non-triangular knitting machine. The non-triangular knitting machine includes a needle plate base; needle plates are arranged at the front end of the needle plate base; a plurality of trapezoidal grids are arranged at the rear end of the needle plate base, servo motors are installed in the trapezoidal grids, the servo motors drive micro-elastic high-strength filaments through belt pulleys, the micro-elastic high-strength filaments are connected to the front ends and the back ends of needle butt connecting members respectively, the needle butt connecting members sleeveneedle butts of knitting needles and are locked, the knitting needles are mounted on the needle plates, front pressure plates and rear pressure plates are also arranged on the needle plates, whereinthe front pressure plates are arranged on the front sides of the needle butts when the knitting needles are at transfer positions, and the rear pressure plates are arranged on the rear sides of the needle butts when the knitting needles are at non-weaving positions; the non-triangular knitting machine also includes control systems of a central computer, a signal processor, a signal comparison module and the like. The invention also provides a weaving method of the non-triangular knitting machine. The non-triangular knitting machine has a simple structure, simple operations, a low production cost, a potential speed increase space and good application markets.
Owner:WUHAN TEXTILE UNIV
Vortex coil-type sunshine pumping fiber laser amplifier and amplification method thereof
ActiveCN110212397AReduced pump threshold powerReduce energy consumptionActive medium shape and constructionOptical elementsCassegrain reflectorRare earth ions
The invention provides a vortex coil-type sunshine pumping fiber laser amplifier. The vortex coil-type sunshine pumping fiber laser amplifier comprises a Cassegrain reflecting primary mirror, a Cassegrain reflecting secondary mirror, a vortex coil fiber working substance, a reflecting bottom plate, a pumping solar ray, an incident port, an emergency port, a fiber cladding layer, a doping fiber core and a solar ray, wherein the Cassegrain reflecting secondary mirror is arranged above the Cassegrain reflecting primary mirror and is confocally assembled with the Cassegrain reflecting primary mirror, and the pumping solar ray axially radiates the Cassegrain reflecting primary mirror so that high-power pumping sunlight reflected by the Cassegrain reflecting secondary mirror perpendicularly irradiates the vortex coil fiber working substance. Naturally-irradiating sunlight can be gathered onto the vortex coil fiber working substance by the Cassegrain reflecting mirrors, a fiber core of the fiber working substance is a rare-earth ion doping part, the fiber working substance is placed in an optical gold-plated reflecting bottom plate, and the efficiency of the sunlight coupled and enteringthe fiber working substance is improved.
Owner:SHANGHAI SATELLITE ENG INST
Ultrathin metal lithium electrode, preparation method thereof, and application of ultrathin metal lithium electrode as negative electrode of primary lithium battery
ActiveCN112928235AGood electrical conductivityGood securityPrimary cellsElectrode carriers/collectorsMetallic lithiumHigh energy
The invention discloses an ultrathin metal lithium electrode, a preparation method thereof, and application of the ultrathin metal lithium electrode as a primary lithium battery cathode. The ultrathin metal lithium electrode comprises a metal lithium layer and a current collector layer, the metal lithium layer is loaded on the surface of the current collector layer, the thickness of the metal lithium layer is between 1 [mu]m and 100 [mu]m, the metal lithium layer comprises metal lithium and additive components, and the additive components comprise an inorganic material of which the surface contains halogen element functional groups, and / or an inorganic material which can be compatible with liquid metal lithium or lithium alloy. The thickness of the metal lithium layer in the ultrathin metal lithium electrode is adjustable, a novel primary lithium battery with matched positive and negative electrode capacities can be manufactured, and due to the fact that the ultrathin metal lithium electrode does not contain excessive metal lithium, the ultrathin metal lithium electrode has better safety and higher energy density.
Owner:BEIHANG UNIV
Friction nano-generator based on fold structure MXene film and preparation method of friction nano-generator
ActiveCN113078843AEasy to prepareEasy to realize industrial productionFriction generatorsNanogeneratorElastic substrate
The invention relates to a preparation method of a friction nano-generator based on a fold structure MXene film, and the preparation method of the friction nano-generator comprises the steps: firstly, uniformly coating the surface of a stretched elastic substrate with slurry A containing single-layer MXene; and after drying, releasing tension applied to the elastic substrate to obtain the elastic substrate of which the surface is covered with an MXene film of a wrinkle structure, and finally leading out an electrode on the MXene film to obtain the friction nano-generator. The prepared friction nano-generator comprises an elastic substrate; the surface of the elastic substrate is covered with an MXene film of a wrinkle structure. The preparation method of the friction nano-generator is simple, and industrial production is easy to realize; the prepared friction generator is high in output power and good in stretchability, and can be well applied to the field of energy and self-powered sensing.
Owner:SHANGHAI UNIV OF ENG SCI
Preparation method of phosphorus-nitrogen-silicon synergistic phyllosilicate flame retardant
InactiveCN104774344AImprove thermal stabilityImprove flame retardant performanceRubber materialMineral Sources
The invention relates to a preparation method of a phosphorus-nitrogen-silicon synergistic phyllosilicate flame retardant, which comprises the following steps: (1) carrying out acidifying modification on inorganic montmorillonite; (2) preparing a pentaerythritol solution; (3) preparing pentaerythritol modified organic montmorillonite; and (4) preparing the target flame retardant. Compared with the prior art, the phosphorus-nitrogen-silicon synergistic phyllosilicate flame retardant is applicable to rubber industry and cable industry, can substitute or partially substitute the traditional high-price environment-unfriendly flame-retardant and reinforcing material capable of damaging other properties of polymers, is beneficial to improving the traditional industry, can enhance the flame retardancy, mechanical properties and other properties of the rubber material, and is beneficial to opening the application market of montmorillonite and other mineral resources.
Owner:SHANGHAI UNIV OF ENG SCI
Heat preservation type inner wall plastering anhydrite and method
InactiveCN108314401AImprove insulation effectGood thermal insulation functionCovering/liningsCelluloseWeightlessness
The invention discloses heat preservation type inner wall plastering anhydrite and a method. The heat preservation type inner wall plastering anhydrite is prepared from the following matters in partsby weight: 400 to 450 parts of alpha type hemihydrates gypsum, 200 to 300 parts of a microcapsule phase-change material, 50 to 100 parts of calcium triple superphosphate, 20 to 70 parts of quartz sand, 50 to 60 parts of glass beads, 15 to 20 parts of redispersible emulsion powder, 0.5 part of starch ether, 2.5 parts of cellulose ether and 0.4 part of retarder. A preparation method of the heat preservation type inner wall plastering anhydrite comprises the following steps: weighing all raw materials in parts by mass, sequentially adding the raw materials in weightlessness dry blending equipment, and starting the weightlessness dry blending equipment for blending after completing addition of all the raw materials; discharging and packaging after uniformly stirring. The heat preservation typeinner wall plastering anhydrite disclosed by the invention is mainly applied to inner wall plastering, the thickness which is 1 to 2 cm can be achieved through one-time construction, and the heat preservation type inner wall plastering anhydrite has a good heat preservation and heat insulation function except the technical effects of common plastering anhydrite construction.
Owner:青岛恒基伟业建材有限公司
SAN/PMMA (Styrene-Acrylonitrile/Polymethyl Methacrylate) composite material for bathrooms and preparation method thereof
The invention relates to the field of bathroom materials and in particular relates to an SAN / PMMA (Styrene-Acrylonitrile / Polymethyl Methacrylate) composite material for bathrooms and a preparation method thereof. The composite material is prepared from the following raw materials in parts by mass: 10 to 30 parts of a toughening agent, 30 to 55 parts of SAN, 15 to 40 parts of PMMA, 3 to 10 parts ofa styrene-acrylonitrile-maleic anhydride copolymer, 0.5 to 3 parts of a brightening agent, 0.5 to 3 parts of a light stabilizer, 0.5 to 3 parts of an anti-scratching agent and 0.5 to 2 parts of otherauxiliary agents, wherein the other auxiliary agents comprise at least one of a lubricant and an antioxidant. The SAN / PMMA composite material for the bathrooms, provided by the invention, can be usedfor manufacturing bathroom products and can meet special requirements on bathroom product materials, such as high luster, scratching resistance, weather resistance and acid and alkali corrosion resistance; the problems that existing ceramic bathroom products have relatively great weight, are inconvenient to transport, are easy to damage in a transportation process, have complicated processing procedures and relatively single color and the like can be improved; the SAN / PMMA composite material for the bathrooms has relatively good application market and prospect in the field of the bathrooms.
Owner:JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
Insulation coating device and coating process for high-efficiency metal magnetic powder
PendingCN110814335AHigh degree of automationShorten insulation coating timeTransportation and packagingMetal-working apparatusMagnetic powderMetallurgy
The invention discloses an insulation coating device for high-efficiency metal magnetic powder and an insulation coating process for the high-efficiency metal magnetic powder matching with the insulation coating device. The insulation coating device has the characteristics of "one tank", "normal temperature operation" and "high automation degree", etc. The insulation coating device is used for carrying out insulation coating to the surface of the metal magnetic powder, and the insulation coating device for the high-efficiency metal magnetic powder has high automation degree; on the premise ofensuring the insulation coating effect of the metal magnetic powder, the insulation coating time of the metal magnetic powder is effectively shortened, and an insulation coating metal magnetic powderproduct can be obtained within 160 min; meanwhile, without limitation on the size of the insulation coating process for the metal magnetic powder, the insulation coating device not only can meet the requirements of (a small batch laboratory of 2 kg, but also can meet) the requirements of a large batch preparation of 50 kg. The cooperative use of the insulation coating device and the process for the high-efficiency metal magnetic powder is beneficial to promoting the industrialization of metal magnetic powder insulation coating and has a huge application market.
Owner:FOSHAN UNIVERSITY
Phototherapy instrument and manufacturing method thereof
PendingCN111420292AImprove consistencyReduce half-wave widthLight therapyCoatingsPoint lightLight treatment
The invention provides a phototherapy instrument and a manufacturing method thereof. The phototherapy instrument comprises a flexible substrate, an LED light source, a first Bragg reflection structurepositioned around the LED light source and on the flexible substrate, a plurality of second Bragg reflection structures positioned on the top of the first Bragg reflection structure, and a transparent light mixing layer positioned on the tops of the plurality of second Bragg reflection structures. As the phototherapy instrument is provided with the transparent light mixing layer, uniformity of the LED light source is improved, point light sources cannot be seen on the surface of the phototherapy instrument, and the wearing comfort is improved. Moreover, phototherapy is more reliable and effective, and uniformity of the phototherapy is improved.
Owner:BEIJING TRUWIN OPTOELECTRONICS
High-speed rotary motor capable of being positioned accurately
PendingCN106787315APrecise positioningGood for high speedAssociation with control/drive circuitsMagnetic circuit rotating partsMoment of inertiaEngineering
The invention discloses a high-speed rotary motor capable of being positioned accurately. The high-speed rotary motor comprises a circuit board, a back end cover, high-performance magnetic steel, a rotor assembly and a front end cover, wherein the circuit board is fixedly connected with the back end cover through first screws; the high-performance magnetic steel is mounted at one end of the rotor assembly, and the high-performance magnetic steel is mounted in the back end cover; the rotor assembly is mounted in a stator assembly; and the rotor assembly is connected with the front end cover through a wave gasket. According to the high-speed rotary motor capable of being positioned accurately, the center of a rotor iron core of the rotor assembly is hollowed out, so that rotational inertia can be lowered and high-speed performance of the motor can be improved; in addition, the high-performance magnetic steel is mounted on the motor shaft of the rotor assembly, so that signal induction can be performed conveniently and the motor can be positioned accurately; and therefore, the high-speed rotary motor is reasonable in design, capable of solving the problem of inaccurate positioning of the existing motor rotor and avoiding a phenomenon of low rotary speed of the rotor caused by unreasonable design, and quite bright in application market.
Owner:中山市胜洋电机有限公司
Axle box structure with anti-skid and monitoring functions and used for railway vehicle
The invention relates to an axle box structure with anti-skid and monitoring functions and used for a railway vehicle. The axle box structure comprises an axle box body installed at the axle end through a bearing in a sleeving mode, an axle box pressing cover fixed on the exterior of an axle end and a gear fixed on the outer end of the axle box pressing cover. A axle box cover is fixed at the outer end of the axle box body. A speed sensor installing connecting opening away from the center of a steering frame and a signal sensor installing connecting opening being close to the center of the steering frame are formed in the axle box cover. From the view of the axle end, an angle a facing downward is formed between the central line and the horizontal line of the speed sensor installing connecting opening, an angle b facing downward is formed between the central line and the horizontal line of the signal sensor installing connecting opening, the value range of a is 7-11 degrees, and the value range of b is 8.5-11.5 degrees. According to the axle box structure with the anti-skid and monitoring functions and used for the railway vehicle, the size of a matched position of an axle box cover labyrinth slot and the axle box body keeps unchanged, and a boss connecting opening for anti-skid equipment and a boss connecting opening for signal equipment are integrated on the axle box cover, so that the purpose that the anti-skid equipment and the signal equipment can be simultaneously installed on the axle box cover is achieved.
Owner:CRRC NANJING PUZHEN CO LTD
Pipe material, pipe material manufacturing method and telescopic water pipe
ActiveCN105465501BImprove structural strengthUniform shape deformationPipeline expansion-compensationFlexible pipesWrinkle skinUltimate tensile strength
The invention discloses a pipe, a method for making the pipe and a telescopic water pipe, aiming to provide a pipe that can be stretched, has a uniform structure, and does not produce wrinkle angles when stretching. In the state of natural shrinkage of the pipe body, the pipe wall integrally extends outwards with several flexible convex rings, and in the state of natural shrinkage of the pipe body, the pipe wall integrally extends inward with several flexible concave rings. The pipe body of this structure can be uniform When deforming and shrinking, the outer wall of the pipe is composed of a number of flexible convex ring outer walls, and the inner wall is composed of a number of flexible concave ring inner walls. Or the skin, when stretched, the pipe is approximately tubular, that is, there are tiny wavy structures on the inner and outer walls, which can effectively buffer the force on the inner and outer walls of the pipe, so that the pipe has good structural strength and uniform shape deformation, and has a good application market.
Owner:NINGBO FENGYUAN IMPORT & EXPORT CO LTD
PVDF@kuast-8 nanofiber composite film for triboelectric nanogenerator and preparation method thereof
ActiveCN111118619BEasy to prepareEasy to realize industrial productionElectro-spinningNon-woven fabricsPolymer scienceNanogenerator
The present invention discloses a PVDF@KUAST-8 nanofiber composite film for a friction nanogenerator and a preparation method of the film. The preparation method comprises the following steps of adding KUAST-8 powder into acetone and ultrasonically forming suspension liquid A, dissolving PVDF in DMF to prepare a solution B, and uniformly mixing the suspension liquid A and the solution B to preparea spinning solution C; and loading the spinning solution C into an injector for electrostatic spinning to obtain the film. The invention also provides the PVDF high-performance friction nanogeneratorprovided with a fluorine-containing metal organic framework material and obtained by the PVDF@KUAST-8 nanofiber composite film for the friction nanogenerator and the preparation method of the film. The PVDF@KUAST-8 nanofiber composite film improves the output power density of PF-TENG, can directly collect and convert low-frequency mechanical energy in the environment into electric energy, and isan environment-friendly energy device.
Owner:SHANGHAI UNIV OF ENG SCI
Nano-particle and gel for promoting dentin regeneration as well as preparation method and application of nano-particle and gel
ActiveCN112843336APromote regenerationPromote migrationPharmaceutical delivery mechanismProsthesisDentinTooth Tissue
The invention provides nano-particles and gel for promoting dentin regeneration as well as a preparation method and application of the nano-particles and the gel, and relates to the technical field of biological medicines. The AZD2858-CD-chitosan nano-particles for promoting dentin regeneration are prepared by taking a diluent of a stock solution containing AZD2858 and chitosan as raw materials, and the prepared AZD2858-CD-chitosan nano-particles can promote stem cell migration of root apical papilla, dentin differentiation and development and regeneration of dental tissues. The invention further discloses AZD2858-CD-chitosan gel prepared on the basis of the AZD2858-CD-chitosan nano particles, the AZD2858-CD-chitosan gel is a sustained release preparation, and the AZD2858-CD-chitosan gel is filled in an experimental animal model, has the activity of promoting dentin regeneration, has remarkable superiority in dental pulp tissue engineering and has a huge application market in development and regeneration of dental tissues.
Owner:CAPITAL UNIVERSITY OF MEDICAL SCIENCES +1
An untwisting twister, an ultrafine yarn spinning machine, and an ultrafine yarn spinning method
The invention provides an untwisting and twisting device. The untwisting and twisting device comprises an L-shaped base, the L-shaped base is internally provided with a sleeve bearing, one end of a copper coin base sleeve penetrates through the inside of the sleeve bearing, and the other end of the copper coin base sleeve is internally provided with an M-shaped copper coin base and H-shaped rubberroll clamping bases. The M-shaped copper coin base is internally provided with a pair of paralleled clamping rubber rolls, and the two ends of the clamping rubber rolls are limited by oblique groovesin the side face of the M-shaped copper coin base and the H-shaped rubber roll clamping bases. Two clamping base springs are installed between the H-shaped rubber roll clamping bases and the copper coin base sleeve; two opposite holes are formed in the outer side of the copper coin base sleeve, two copper coin base positioning bolts are symmetrically arranged in the holes, and positioning holes matched with the copper coin base positioning bolts are formed in the upper face and the lower face of the M-shaped copper coin base. The invention further provides a superfine yarn spinning machine and a superfine yarn spinning method. The untwisting and twisting device is simple in structure, simple and reliable in motion and low in production cost, and has a potential speed-up space and a good application market.
Owner:WUHAN TEXTILE UNIV
sers-spr dual-mode sensor and its preparation method and application
ActiveCN111812075BStrong resonance enhancement effectExcellent optical propertiesRaman scatteringNucleic acid detectionDual mode
Owner:NANJING UNIV OF POSTS & TELECOMM
A device for automatically measuring the thermocouple coefficient in a t12-type soldering iron core and its application method
ActiveCN107219872BAvoid damageImprove measurement efficiencyTemperatue controlNuclear engineeringUSB
Owner:YANGZHOU UNIV
Output value scale display of electronic potentiometer module
InactiveCN101846532AAdd scale display functionSpeed up the process of replacing mechanical potentiometersIndication of measured valuesAdjustable resistorsPotentiometerIntegrated circuit
The invention relates to an output value scale display of an electronic potentiometer module, which adopts an LED or LCD to form a punctiform display device so that a common electronic potentiometer module becomes an electronic potentiometer with scale display. The scale display directly represents the output resistance of the electronic potentiometer in 100 equally divided parts with small points for ten digits in the unit and large points for ten digits in the decade so as to clearly and accurately reflect the percentage position where the output resistance of the electronic potentiometer is arranged. The scale display has two display methods which are a point display method and a strip display method. The invention can be integrated with the common electronic potentiometer module in the following forming modes: (1) using discrete components and small-scale integrated circuits; (2) using singlechips, such as AT89C2051 and the like, as a core; and (3) integrating function devices capable of integrating.
Owner:武汉源和翔科技有限公司
Aqueous polyacrylate emulision utilized in print and prepn. method
Owner:NANKAI UNIV
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