388 results about "Xenon lamp" patented technology

The invention relates to the technical field of aging detection, and discloses a xenon lamp simulation environment aging detection method and system for a water-based waterproof material. The method comprises the following steps: testing a water-based waterproof material sample in an aging detection platform and collecting first aging response data; calculating a characteristic spectrum drift parameter combination in combination with the first aging response data, and solving a multi-factor aging dynamics equation set to obtain three-dimensional environment field data; inputting the three-dimensional environment field data into a back propagation neural network to carry out multi-factor environment parameter collaborative optimization to obtain an intelligent control parameter combination; performing test parameter adjustment and detection on the aging detection platform according to the intelligent control parameter combination to obtain second aging response data; and performing spectral attenuation index calculation and aging degree grading based on the second aging response data to obtain an aging state evaluation result of the water-based waterproof material sample. According to the method, multi-dimensional quantitative characterization of the aging state of the water-based waterproof material and scientific prediction of the service life of the water-based waterproof material in an acid pollution environment are realized.

The invention relates to the technical field of preparation of catalysts, in particular to a catalyst for in-situ capture of carbon dioxide, a preparation method of the catalyst and application of the catalyst to preparation of methanol from methane, and the preparation method comprises the following steps: S1, mixing and stirring Bi (NO3) 3.5 H2O, dilute nitric acid and an adsorption modifier; s2, filtering to obtain a white precipitate, drying, slowly heating to 450 DEG C in a muffle furnace, and keeping the temperature for 20-30 minutes to obtain a faint yellow solid; s3, dispersing in a modified dissolving solution, sealing the reactor, and purging with argon for 10-15 minutes; and S4, injecting CH4, reacting for 2 hours under the irradiation of a xenon lamp, washing a solid obtained by suction filtration with deionized water, and drying at 60 DEG C for 10-12 hours to obtain the high-performance catalyst. The invention aims at the field of preparation of high-value chemicals from photocatalytic methane, solves the problem of generation of carbon dioxide by peroxidation of methane, and captures the peroxidation product carbon dioxide through the cooperation of the adsorption modifier and the modified dissolving solution to inhibit peroxidation of methane.

The invention provides a method for promoting acquisition of clean fuel by light / sound concerted catalytic degradation of waste plastics and upgrading and conversion thereof, which comprises the following steps: uniformly mixing g-C3N4, cadmium acetate and thioacetamide according to a predetermined proportion, pouring into a reaction kettle, placing in a high-temperature oven for a predetermined time, centrifuging, cleaning and drying to obtain a catalyst, the method comprises the following steps: loading a catalyst on the surface of aerogel, hydrogel or non-woven fabric to obtain an MTSJA-loaded catalyst, treating waste plastic with NaOH, adding the MTSJA-loaded catalyst, stirring under irradiation of a xenon lamp, starting ultrasound for reaction, and carrying out light / sound synergistic catalytic degradation on the waste plastic. According to the method, energy consumption is not needed, toxic and harmful gas is not generated, the purposes of energy conservation and environmental protection can be achieved, meanwhile, carbon dioxide in water can be catalytically reduced to generate clean energy such as methane in the process of degrading the waste plastic, and further obtaining of the energy is promoted.

The invention discloses a vanadium oxide-based supported platinum catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: a) carrying out high-temperature heat treatment on a V precursor to obtain orange V2O5 carrier powder; b) adding V2O5 powder, a Pt metal precursor and a sacrificial reagent into the solution, carrying out ultrasonic treatment, stirring, and reacting under the irradiation of a xenon lamp to obtain a dark brown suspension; c) centrifuging, washing, drying, grinding and roasting the dark brown suspension to obtain dark brown powder; and d) carrying out three times of high-temperature heat treatment on the dark brown powder under different protective gases, and sequentially carrying out three processes of oxidation, reduction and partial oxidation to obtain the vanadium oxide-based platinum-loaded catalyst. The catalyst prepared according to the invention is applied to a carbon monoxide oxidation reaction, and has the advantages of excellent catalytic performance, long-time stability and good recycling stability at a high space velocity.

The invention discloses a working method of a ceramic material xenon lamp aging oven, and relates to the technical field of aging ovens, the working method is characterized in that two crash barriers are in sliding butt joint together to form a protective fence which is large in area and can cover a row of xenon lamp tubes, and the protective fence can carry out anti-collision protection on the row of xenon lamp tubes; a row of xenon lamp tubes are prevented from being accidentally collided and broken when ceramic products or materials are taken, loaded and unloaded in the aging oven; the two anti-collision fences are installed in a sliding mode, when the aging oven is used for testing, the anti-collision fences can be separated from each other up and down and opened in a sliding mode, a row of xenon lamp tubes are completely exposed to be used for irradiation, and the situation that the two anti-collision fences are fixedly installed in a static mode, block the front side of the row of xenon lamp tubes for a long time, block light and affect illumination intensity is avoided. Compared with the prior art, the ceramic product aging test device is beneficial for ensuring the accuracy of aging test use.

The invention discloses a plastic part xenon lamp aging machine with a spraying system, and belongs to the technical field of material weather resistance testing equipment. The equipment comprises an aging chamber, a xenon lamp light source and a spraying system, and the spraying system realizes flexible switching spraying of pure water and a chemical solution through cooperative operation of a liquid supply unit (comprising double liquid storage tanks and a four-way switching valve), a nozzle unit (a multidirectional adjustable nozzle), a liquid recovery device (a collecting tank and a recovery pump) and a control unit. The control unit accurately controls the concentration and flow of the mixed solution by adjusting the opening degree of the flow valve, residual liquid is emptied through the four-way valve and the liquid drainage pipeline to avoid cross contamination, the spraying angle is dynamically adjusted through the multi-directional nozzle to ensure uniform coverage, and the recycling device recycles waste liquid in a classified mode to reduce resource consumption. The problems of single spraying mode, residual liquid pollution, uneven coverage and low waste liquid treatment efficiency of traditional equipment are solved, and the aging test accuracy, the environment simulation authenticity and the resource utilization rate are remarkably improved.

The invention discloses a silver nanowire network film and a welding method, and relates to the technical field of nano material processing and flexible electronic device manufacturing, and the welding method comprises the following steps: taking a polyester film as a substrate, taking silver nanowires, and placing the silver nanowires in ethanol to prepare a silver nanowire dispersion liquid; spin-coating the silver nanowire dispersion liquid on a substrate, and drying to form a silver nanowire network electrode; a focused light scanning system is adopted to weld the silver nanowire film, a xenon lamp light source is adopted to form a light spot through focusing of a convex lens, an XY motor drives a platform to drive a silver nanowire network electrode to perform two-dimensional motion, and the light spot scans a to-be-welded area of the silver nanowire network electrode according to a preset path for welding; and naturally cooling to obtain the silver nanowire network film. Uniformity and stability of current conduction of the electrode network are guaranteed, and comprehensive and efficient node welding is achieved.

The invention discloses an electrode assembly for a high-power pulse xenon lamp and a preparation method of the electrode assembly, and aims to overcome the technical defects that a traditional electrode is large in mass and poor in reliability and stability. The electrode assembly is mainly composed of an electrode tip, an electrode stem and a lead seat which are made of cerium-tungsten alloy, niobium and stainless steel. The electrode tip and the electrode rod are stably connected in a mode of combining brazing with interference connection, and the electrode rod and the lead seat adopt a multi-connection structure of brazing, threaded mechanical connection and micro interference connection; the assembled electrode assembly is subjected to degassing, brazing connection and electrode activation treatment at a time in a high-temperature and high-vacuum environment, and the problem of electrode material pollution caused by repeated heating is effectively avoided. The electrode assembly is simple in overall structure, reliable in preparation, excellent in current passing ability, capable of bearing impact force under extreme working conditions and outstanding in burning loss resistance, reliability and stability are remarkably improved, and the long-term stable working requirement and large-scale mass production of the high-power pulse xenon lamp are met.

The invention relates to an ultrathin Ru / Co3O4 catalyst, Co3O4 serving as a carrier is of an ultrathin two-dimensional nanosheet structure, and Ru nanoparticles are uniformly loaded on the surface of the Co3O4. The preparation method comprises the following steps: dispersing Co3O4 in a mixture of deionized water and methanol to obtain a suspension; and adding ruthenium trichloride into the suspension, and irradiating the mixture with a xenon lamp to finally obtain the ultrathin Ru / Co3O4 catalyst. The invention relates to an ultrathin Ru / Co3O4 catalyst applied to photo-thermal CO2 hydrogenation. The method has the advantages that Co3O4 is of an ultrathin two-dimensional nanosheet structure, Ru is evenly loaded on the surface of Co3O4, Ru / Co3O4 has the high specific surface area, rich active sites are provided, the photo-thermal catalysis CO2 hydrogenation activity is remarkably improved, the problem that an existing catalyst is low in activity is solved, parameters such as the heating rate, the roasting temperature and time are accurately controlled, and Ru doping is combined, so that the catalytic activity of CO2 is greatly improved. Active component loss and structure collapse are effectively avoided, and the stability is enhanced.

This invention discloses a method for preparing P-TiO2 photocatalyst and a method for recycling waste Pd / Al2O3 catalyst. The P-TiO2 photocatalyst is prepared by a hydrothermal method. This invention provides a method for recycling waste Pd / Al2O3 catalyst using photocatalytic technology, comprising the following steps: Step A: Obtaining P-TiO2 photocatalyst; Step B: Mixing waste Pd / Al2O3 catalyst with P-TiO2 photocatalyst and a photocatalytic solvent, and carrying out a photocatalytic reaction under stirring and xenon lamp irradiation conditions to dissolve Pd in ​​the waste Pd / Al2O3 catalyst. After sufficient reaction, the Al2O3 support is first separated, and then the remaining solution is centrifuged to obtain a Pd-containing solution and P-TiO2 photocatalyst. This invention can effectively improve the recovery rate of Pd metal, and the entire process is green, environmentally friendly, and low-cost.

The invention discloses a polyurethane adhesive for flexible packaging of a new energy battery and a preparation method of the polyurethane adhesive, and belongs to the technical field of adhesives. The adhesive is prepared by adopting hydrogenated bisphenol A as a polyol raw material and dicyclohexylmethane diisocyanate (HMDI) as isocyanate and cooperating with dimethylolpropionic acid, triethylamine, 1, 4-butanediol and other raw materials through the steps of prepolymer synthesis, chain extension reaction, neutralization reaction, addition of auxiliaries, emulsion preparation and the like. The core innovation lies in that the electrolyte erosion resistance is improved through an ether bond structure of hydrogenated bisphenol A, the weather resistance and rigidity are enhanced by using a hydrogenated alicyclic structure of hydrogenated bisphenol A, and meanwhile, the crosslinking density and the interface bonding force are balanced by optimizing the use amount of 1, 4-butanediol and adding a silane coupling agent KH-550. The adhesive has excellent electrolyte resistance (the adhesive strength retention rate after soaking is greater than or equal to 90%), good low-temperature resistance flexibility (no crack when bent at-40 DEG C) and prominent weather resistance (the performance retention rate after xenon lamp aging for 1000h is greater than 90%).

The application discloses a kind of oxygen vacancy promotes methanol carbon-carbon coupling ethane production method, comprising the following steps: synthesizing H2Ti4O9;The obtained H2Ti4O9 is stripped into colloidal sheet, obtains two-dimensional TiO2 nanosheet;Hydrogenation treatment obtains the TiO2 nanosheet with oxygen vacancy;The TiO2 nanosheet with oxygen vacancy is dissolved in methanol / water solution, drop into H2PtCl6 solution, solution is in vacuum state, then it is irradiated with arc lamp while stirring N1 hour, obtain brown white precipitate, after washing vacuum drying catalyst is obtained;Methanol / water solution is placed into reactor, catalyst is uniformly dispersed in methanol / water solution, when reaction, first the reactor is evacuated to remove air, then xenon lamp is opened to carry out illumination, after reaction, obtain ethane.The application uses the TiO2 nanosheet with oxygen vacancy as catalyst to produce ethane, and a large number of oxygen vacancies increase a large number of methanol dissociation sites, thereby reducing the distance between adjacent methoxyl groups, and then promoting coupling to generate ethane.

The invention provides a metal or alloy surface treatment method and a metal or alloy product. The surface treatment method of the metal or the alloy comprises the following steps: forming an organic-inorganic hybrid layer on the surface of an anodic oxide layer on at least one surface of the metal or the alloy; the organic-inorganic hybrid layer is provided with a spatial network structure formed by silicon dioxide, a copolymer of organic oxysilane containing an epoxy group and a benzophenone compound containing a hydroxyl group, and nanocrystallized superfine carbon black. At least one surface of the metal or alloy product is provided with an anodic oxide layer and an organic-inorganic hybrid layer; the organic-inorganic hybrid layer is provided with a spatial network structure formed by silicon dioxide, a copolymer of organic oxysilane containing an epoxy group and a benzophenone compound containing a hydroxyl group, and nanocrystallized superfine carbon black. According to the technical scheme, the organic-inorganic hybrid high-brightness black layer is formed, so that the high-brightness black coating not only has an excellent appearance orange peel effect and excellent xenon lamp aging resistance, but also has extremely high hardness and extremely excellent car washing resistance.

The invention relates to a construction method and application of a ternary composite photocatalyst, and the construction method comprises the following steps: step 1, synthesizing Bi2MoO6: taking Bi (NO3) 3.5 H2O and Na2MoO4. 2H2O as precursors, reacting for 12 hours at 180 DEG C by adopting a hydrothermal method, and centrifugally washing and drying to obtain Bi2MoO6 powder; step 2, loading Fe3O4 nanoparticles on the surface of Bi2MoO6 to form a composite core-shell structure: mixing FeCl3. 6H2O, FeCl2. 4H2O and the Bi2MoO6 powder obtained in the step 1, heating to 80 DEG C under the protection of nitrogen, adding a NaOH solution to adjust the pH value to 10, and reacting for 1 hour to form a Fe3O4 / Bi2MoO6 core-shell structure composite material; step 3, anchoring Ag nano-particles: dispersing the Fe3O4 / Bi2MoO6 composite material obtained in the step 2 in water, adding an AgNO3 solution, stirring in a dark place, and then anchoring Ag nano-particles on a xenon lamp (lambda gt; and reducing Ag < + > into Ag0 under the irradiation of SiO2 / Bi2MoO6, thereby obtaining the Fe3O4 / Bi2MoO6 / Ag composite photocatalyst. The Fe3O4 / Bi2MoO6 / Ag composite photocatalyst is a novel Fe3O4 / Bi2MoO6 / Ag composite photocatalyst, light absorption is enhanced through plasma resonance, carrier separation is promoted through heterojunction, magnetic recovery of Fe3O4 is achieved, and the bottleneck is solved.

Provided is a silicon joint body manufacturing device, a silicon joint body manufacturing method, and a silicon joint body, whereby a joined state of one silicon member and another silicon member can be stably maintained. A silicon joint body manufacturing device 10 comprises: a first light source unit 16 that heats and melts, using a first light L1, one surface 22 to be irradiated of one silicon member 11 and another surface 24 to be irradiated of another silicon member 12 to form a silicon melt 60; a second light source unit 17 that heats the silicon melt 60 with a second light L2 and retains the silicon melt 60 in a gap G; and an irradiation control unit 18 that sequentially moves the irradiation positions of the first light L1 and the second light L2 along the gap G to melt the one surface 22 to be irradiated and the other surface 24 to be irradiated, while retaining the silicon melt 60 in the gap G. The first light source unit 16 has at least one of a xenon lamp and a halogen lamp, and the second light source unit 17 has a laser irradiation unit 64.

The utility model discloses an output power self-adaptive control circuit of beauty equipment, which belongs to the technical field of beauty equipment, and comprises a main control chip, a strong pulse light driving module, a temperature detection module, a voltage and current detection module and a touch detection module, and the main control chip adopts a microcontroller; the intense pulse light driving module is connected with a PC2 pin of the main control chip, and the intense pulse light driving module is used for driving and controlling the lightening of the xenon lamp; the temperature detection module is at least connected with PD3, PB1 and PB3 pins of the main control chip, and the temperature detection module is used for sensing temperature; the voltage and current detection module is connected with a PB4 pin and a PB5 pin of the main control chip, and the voltage and current detection module is used for detecting peak voltage and peak current; the touch detection module is at least connected with a PC4 pin, a PC5 pin and a PC6 pin of the main control chip, and the touch detection module is used for detecting the contact condition with the skin.

The utility model relates to the technical field of film detection, in particular to a film defect detection device. The device comprises a film viewing cavity arranged in a darkroom, the film viewing cavity comprises a main cavity defined by baffles and a middle platform layer arranged in the main cavity, a light through hole is formed in the middle platform layer, a xenon lamp is installed at the top of an upper cavity so that light can irradiate a to-be-detected film at the light through hole, and a defect imaging curtain is laid at the bottom of a lower cavity so that the to-be-detected film can be detected. The shadow left by the thin film at the light through hole is received; light penetrates through the thin film, shadow is projected on the defect imaging curtain laid at the bottom of the lower cavity, due to the fact that the xenon lamp with higher light penetrating power is selected, slight deformation type defects of the thin film can be seen on the defect imaging curtain, the defects of an existing thin film defect observation mode are overcome, and the tiny and slight deformation type defects of the thin film can be seen.

The invention relates to a preparation method of a (Mo, C) co-doped titanium oxide photocatalyst, TiCl4, CaC2 and Na2MoO4 are taken as raw materials, doping is carried out by adjusting the molar ratio of C4 <-> to Ti < 4 + > and the weight ratio of WMoO3 to WTiO2, the (Mo, C) co-doped nano titanium oxide photocatalyst is formed, the photocatalytic hydrogen production performance of TiO2 is effectively improved, the hydrogen evolution performance reaches 10-12mmol / g.h under the irradiation of 300W xenon lamp light, and the (Mo, C) co-doped nano titanium oxide photocatalyst is prepared. A new way is provided for preparation of the co-doped anatase titanium oxide photocatalyst, and the method has a wide application prospect.

The present invention discloses a single-component white light coordination polymer, the chemical formula of which is [Zn(bpdo)(fum)(H2O)2] n , where bpdo represents 4,4′-bipyridine-N,N′-dioxide, and fum represents fumaric acid; the structural unit of the single-component white light coordination polymer is a triclinic system with a space group of P1 and unit cell parameters of #imgabs0#α=87.312(7)°, β=82.988(8)°, and γ=73.760(8)°. The present invention synthesizes a single-component white light coordination polymer crystalline material in a one-step solvent thermal reaction; the material can emit white light within an excitation wavelength range of 320-370nm and gradually changes from pink to yellow-green within 5 minutes under irradiation with a 200W xenon lamp; the material has the dual functions of emitting white light with a high color rendering index and photochromism.

The invention discloses a preparation method and application of a zinc cadmium sulfide solid solution photocatalyst, and the preparation method comprises the following steps: S1, mixing a zinc source and a cadmium source, dissolving in deionized water to obtain a solution A, dissolving a sulfur source in deionized water, and adjusting the pH value to obtain a solution B; s2, inputting the solution A and the solution B into a supergravity reactor at normal temperature for precipitation reaction, and aging the obtained reaction liquid; s3, carrying out hydrothermal treatment on the reaction liquid subjected to aging treatment; and S4, filtering, washing and drying to obtain the zinc cadmium sulfide solid solution photocatalyst. The zinc cadmium sulfide solid solution photocatalyst prepared under the supergravity condition can achieve the carbon dioxide conversion efficiency larger than or equal to 78.45 micromol.g <-1 >. H <-1 > under a 300 W xenon lamp, and high-value utilization of sulfur resources is achieved.

The invention provides a financial industry low-code platform development method and system based on credential adaptation, and relates to the technical field of credential industries, and the method comprises the steps: 1, mapping interactive interfaces of a core business entity and three associated business entities into four control points in a three-dimensional business topological space, so as to determine a continuous business curved surface, and calculating the normal vector directions of the continuous service curved surface at the four control points, adjusting the connection strength and the data flow direction between the service entities corresponding to the four control points according to the included angle relationship between the normal vector directions of the four control points, and constructing the closed service object network. According to the method, the business network, the simulation model and the adaptation assembly of the credential creation adaptation are constructed, the reusable assets are formed, low-code visual arrangement and credential creation environment full-process testing are combined, efficient development, asset reuse and stable landing of the financial industry credential creation adaptation application are achieved, and business process compliance and system operation reliability are guaranteed.

The utility model provides a sunlight simulation device for testing the heat insulation effect of an HUD (Head Up Display), which comprises the following structures: a bracket, the top and the middle of which are respectively provided with an upper truss and a lower truss; a reflecting bowl, an upper connecting piece and a lower connecting piece are fixedly arranged in the middle of the mounting frame, the working height of the upper truss and the working height of the lower truss on the support are adjusted, the guide frame moves left and right below the upper truss through the upper connecting piece, and the working height of the upper lamp holder and the working height of the xenon lamp in the reflecting bowl are adjusted through the lifting connecting piece. The adjusting holes are matched with the lower lamp holder, the lower lamp holder is matched with the upper lamp holder to move on the lower truss, the relative distance between the xenon lamp and the reflective bowl is adjusted to change the size of a light spot, the size and cost can be controlled through the scheme, and meanwhile the test requirement of sunlight simulation can be met.

1. Name of the product in this design: Graphical User Interface for Setting Absolute Luminous Intensity Parameters of Xenon Lamp Source for Electronic Equipment. 2. Purpose of this design: An electronic device. 3. The key design feature of this product is its graphical user interface. 4. The image or photograph that best illustrates the design's key features: the front view. 5. Purpose of the graphical user interface: Used for setting the absolute light intensity parameters of the xenon lamp light source. 6. Human-computer interaction method of graphical user interface: The main view is the home page of the interface. Click the fourth "Settings" icon on the left side of the interface in the main view to enter the change state diagram 1; click "Absolute Light Intensity" in the change state diagram 1 to enter the change state diagram 2; set various parameters of "Absolute Light Intensity" in the change state diagram 2 and click "Confirm Settings" to enter the change state diagram 3.

The invention relates to the technical field of xenon lamp test equipment, in particular to a flat plate type xenon lamp aging test box which comprises a machine box, a test box body is installed on the machine box, a carrier plate is installed on the test box body, and a first transferring assembly and / or a second transferring assembly for placing samples are / is installed on the carrier plate. A spraying assembly for spraying water, a ventilation assembly for ventilation and an illumination assembly for simulating sunlight irradiation are installed on the machine box. The flat plate type xenon lamp aging test box has the effect of improving the convenience of the flat plate type xenon lamp aging test box in the operation process.

The utility model provides a kind of folding pulse xenon light disinfection trolley, including middle plate, the upper surface middle part of middle plate is fixed with support seat, the front and rear end of support seat right side is fixed with servo motor, the transmission shaft left side of servo motor power output end is transversely rotatably connected with two-way screw rod, the left and right ends of the outer wall of two two-way screw rods are nested with bottom slider, bottom slider is rotatably connected with support frame on the shaft rod, the top of support frame is connected with placing table by shaft rod, the upper surface right side of placing table is fixed with installation platform, the outer surface of installation platform is fixed with pulse xenon lamp, the front and rear end in the inside of middle plate is embedded with side support plate, the left and right ends of side support plate bottom are fixed with universal wheel, the right side middle part of middle plate is fixed with limit post longitudinally.The utility model can be folded and stored as a whole, more suitable for use in narrow space or need to frequently change disinfection site scene, operation is more flexible, effectively improve the working efficiency of device.

The invention relates to the technical field of xenon lamp power supply control, in particular to a xenon lamp power supply adaptive structure based on analog control. According to the technical scheme, the circuit comprises a rectification filtering module, an LCC half-bridge resonance circuit, a transformer, a voltage doubling circuit, a full-bridge rectification circuit and a control unit which are connected in sequence. A primary coil of the transformer is connected with the LCC half-bridge resonance circuit, and two secondary coils of the transformer are respectively connected with the input end of the voltage doubling circuit and the input end of the full-bridge rectification circuit; and the output end of the voltage doubling circuit is coupled to an upper bridge arm node of the full-bridge rectifying circuit. Through combination of high-frequency resonant topology and analog feedback control, the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching are realized while the power supply volume (a high-frequency transformer replaces an industrial frequency transformer) is remarkably reduced, the defects of large volume and high loss of a traditional scheme are overcome, and the reliability of the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching is improved. And the pre-combustion success rate is improved, the switching loss is reduced, and the reliability, the energy efficiency and the adaptability of the xenon lamp power supply are comprehensively optimized.

The utility model discloses a polyester fabric shading performance testing device, which comprises a bottom plate, supports are arranged on the bottom plate at intervals, a rotating shaft is arranged between the supports, the rotating shaft is rotatably connected with the supports, a driven gear is arranged on the rotating shaft, the driven gear is fixedly connected with the rotating shaft, a motor is arranged on the bottom plate, and the motor is fixedly connected with the driven gear. A driving gear is arranged at the output end of the motor, the driving gear is meshed with the driven gear, and the motor is used for driving the rotating shaft to rotate forwards and backwards within a certain angle; a support is arranged on the bottom plate, a rotating shaft is arranged on the support, side plates are arranged at the two ends, close to the support, of the rotating shaft respectively, the side plates are fixedly connected with the rotating shaft, first openings allowing polyester fabric to pass through are formed in the side plates, a xenon lamp fixedly connected with the bottom plate is arranged between the side plates, the xenon lamp is located above the polyester fabric, and an illumination detection device is arranged below the polyester fabric. According to the utility model, a real sun illumination environment is simulated, and the shading property of the polyester fabric is rapidly and conveniently detected.

The invention discloses a green synthesis method for preparing micron spherical silver powder from green soybean pod extract. The green soybean pod extract is used as a reducing agent, and silver nitrate is used as a silver source. The preparation method comprises the following steps: cleaning, drying and crushing green soybean pods, putting the crushed green soybean pods into a round-bottom flask, connecting a reflux condensing tube, adding deionized water in a ratio of 1: 10, heating to boil, and keeping a reflux state for 1-3 hours; and after the reflux is finished, cooling the extracting solution, filtering to remove filter residues to obtain a green soybean pod crude extracting solution, carrying out ion exchange resin chromatography and water elution on the crude extracting solution to obtain a green soybean pod eluent, and carrying out vacuum concentration and drying to obtain the green soybean pod extract. Adding a dispersing agent into the silver nitrate solution, adjusting the pH value to 7, and then adding the mixed solution into the green soybean pod extract solution to obtain a mixed solution; and the mixed solution is magnetically stirred for 10 min, and then the micron spherical silver powder is obtained through high-speed centrifugation, xenon lamp irradiation, azeotropic distillation, washing and drying. The micron spherical silver powder prepared through the method is high in sphericity degree, good in fluidity and high in purity.

The invention belongs to the technical field of composite materials, and particularly relates to controllable silver nanomaterial modified-liquid metal-polyacrylamide composite hydrogel, a preparation method thereof and a flexible sensor, and the preparation method comprises the following steps: S11, adding blocky EGaIn into absolute ethyl alcohol, performing ultrasonic treatment to obtain EGaIn particles, standing, and drying in a vacuum drying oven to obtain the controllable silver nanomaterial modified-liquid metal-polyacrylamide composite hydrogel. Sealing for later use after the ethanol is completely volatilized; s12, dispersing and dissolving acrylamide and N, N '-methylene bisacrylamide in deionized water, stirring until solids are completely dissolved, and then adding the EGaIn particles as an initiator to obtain an EGaIn-PAM hydrogel prepolymer solution; s13, carrying out ultrasonic treatment on the EGaIn-PAM hydrogel prepolymerization liquid under an ice-water bath condition, so that a polymer is converted into gel, and EGaIn-PAM composite hydrogel is formed; s14, the EGaIn-PAM composite hydrogel is subjected to freeze drying, then the EGaIn-PAM composite hydrogel is soaked in an AgNO3 solution, the hydrogel is placed under a xenon lamp for illumination, and finally Ag / EGaIn-PAM hydrogel is obtained; wherein the concentration of the AgNO3 solution in the step S14 ranges from 0.02 M to 0.4 M.

The application discloses application of basic zinc carbonate in photocatalytic reduction of CO2, and a product of the photocatalytic reduction of CO2 is CO. The application uses the basic zinc carbonate, and can reduce the CO2 into CO through a photocatalytic reaction without a sacrificial agent and a cocatalyst, saves reagents required in a photocatalytic CO2 reduction process, and has simple use conditions. The basic zinc carbonate is used in the photocatalytic reduction of CO2 under a 300W high-pressure xenon lamp for 5h, and an average generation rate of CO is 1.61umol g –1 h –1 -1h-1. The basic zinc carbonate also has good stability and repeatability in a cyclic reaction test.