77results about How to "Effective shielding" patented technology

The invention relates to a composite electromagnetic shielding structure for a power terminal and a preparation method thereof, the structure comprises an accommodating shell, the accommodating shell is formed by connecting a plurality of composite electromagnetic shielding plates, and each composite electromagnetic shielding plate comprises an inner surface shielding layer and an outer surface shielding layer which are attached to each other; a heat conduction layer is arranged between the inner surface shielding layer and the outer surface shielding layer, and the inner surface shielding layer is located in the accommodating shell; a protective layer is arranged on the outer layer of the outer surface shielding layer and comprises an insulating layer and a waterproof layer, and the waterproof layer is located on the outer layer of the insulating layer; the outer surface shielding layer is made of a low-frequency electromagnetic field shielding material formed by mixing amorphous magnetic alloy powder, magnetic fibers and nickel powder; and the inner surface shielding layer is made of a high-frequency electromagnetic shielding material formed by mixing silicon carbide and resin foam rubber fibers. The structure can cope with various electromagnetic interference environments, provides electromagnetic shielding protection, and also has better electromagnetic shielding effectiveness for electromagnetic interference of different frequency bands.

The invention relates to the technical field of electronic materials, and discloses a multi-layer shielding type insulating sheet, which comprises a shielding layer used for shielding electromagnetic interference and in direct contact with an insulating layer; the insulating layer is used for electric insulation and is tightly connected with the shielding layer and the heat dissipation layer; the heat dissipation layer is used for heat conduction and is arranged on the close side of the insulating layer and the buffer layer; the buffer layer is used for providing mechanical buffer and structural support and is attached to the heat dissipation layer and the surface coating; the surface coating is used for protecting the material surface and arranged on the outer surface of the buffer layer, and the shielding layer is made of one or more of copper foil, aluminum foil and a graphene coating. By adopting the copper foil, the aluminum foil or the graphene coating as the shielding layer, electromagnetic interference from the outside can be effectively shielded, in an experiment, the electromagnetic shielding effectiveness of the insulating sheet can reach 95 dB or above, the insulating sheet particularly shows excellent electromagnetic shielding performance in a high-temperature and high-vibration environment, and stable operation of an internal circuit and equipment is ensured.

The invention provides a varied doping high-reliability planar gate silicon carbide VDMOS and a preparation method thereof, and the method comprises the steps: depositing metal on the lower side surface of a silicon carbide substrate, and forming a drain metal layer; epitaxially growing on the upper side surface of the silicon carbide substrate to form a drift layer; a barrier layer is formed, etching and ion implantation are carried out, and a first N-type region, a second N-type region and a P-type well region are formed; a barrier layer is formed again, etching and ion implantation are carried out, and an N-type source region is formed; a barrier layer is formed again, etching and ion implantation are carried out, and a third N-type region is formed; a barrier layer is formed again, and a gate dielectric layer is formed through etching and deposition; and re-forming a barrier layer, etching, depositing metal, forming a gate metal layer and a source metal layer, and removing the barrier layer to complete preparation. The transverse layout of the on-resistance of the device is accurately controlled, so that the current is uniformly distributed in the device, heat concentration is avoided, and the reliability of the device is improved.

The invention relates to a nanocellulose-silicon-based hybrid material, preparation and application thereof and a thermoplastic polymer composite material. Comprising the following steps: combining nano SiO2 containing hydrophilic hydroxyl on the surface with hydroxyl on the surface of cellulose, then adding a silane coupling agent, reacting and hydrolyzing the silane coupling agent to obtain silanol, combining the silanol with hydroxyl on the surface of nano SiO2 particles and hydroxyl on the surface of nano cellulose, drying, dehydrating the silanol into siloxane, and grafting the siloxane on the surface of nano cellulose / SiO2, thereby obtaining the nano SiO2 / silanol composite material. Grinding to obtain a nanocellulose-silicon-based hybrid material, blending the obtained hybrid material with a thermoplastic polymer matrix, and preparing a corresponding product through a thermal forming process. The process is environment-friendly, the method is simple, the product is easy to form, operation and control are simple and convenient, and industrial production is facilitated; the prepared hybrid material has good stability, dispersibility and polymer matrix compatibility, and shows excellent mechanical properties and thermal properties when applied to thermoplastic polymers.

The invention relates to the technical field of metal ceramic composite materials for small reactors, in particular to a novel WC-based metal ceramic composite shielding material and a preparation process thereof.The composite shielding material is prepared from WC-based ceramic powder and high-entropy alloy powder through ball-milling mixing, pre-pressing forming and high-temperature and high-pressure sintering treatment; the mass ratio of the high-entropy alloy powder in the composite shielding material is 2%-10%. The high-purity WC-based ceramic and the high-entropy alloy are compounded through the steps of ball-milling mixing, pre-pressing treatment, high-temperature and high-pressure sintering and the like, the composite material with unique performance is formed, the uniformity and compactness of the material are ensured, the plasticity of the composite material is improved, the good ductility of the composite material is kept at the high temperature, the atomic diffusivity is reduced, and the mechanical property of the composite material is improved. The high-temperature stability of the material is improved, the high-entropy alloy can form a stable passive film on the surface, the corrosion resistance is further improved, and the comprehensive performance of the material is integrally improved.

A neutron source irradiation device capable of switching gas paths disclosed by the present invention comprises a gas path switching rotor assembly, a transmission pipeline and a plurality of storage pipelines, the transmission pipeline is provided with an electromagnetic chuck, and a neutron source is stored in each storage pipeline. And the transmission pipeline can be communicated with the different storage pipelines through rotation of the gas path switching rotor assembly, so that neutron sources in the different storage pipelines can reach the electromagnetic chuck through the transmission pipeline. Neutron sources at different positions can be transmitted to the same position for irradiation, an independent transmission irradiation structure is provided, the irradiation position structure is simple, the scattering influence can be reduced, meanwhile, different neutron sources have good repeatability and consistency at the irradiation positions, position adjustment of a measured instrument is not needed, the verification efficiency is improved, and the detection cost is reduced. And the stability and consistency error of the generated neutron radiation field are ensured.

The present application relates to a kind of pattern invisible and display controllable crystal glass panel and preparation method, crystal glass panel includes glass and light-emitting panel, the front of glass is equipped with color film display layer, high cover ink layer, translucent color ink layer and texture layer, pattern is equipped on color film display layer, high cover ink layer is equipped with corresponding hollow area, the back of glass is equipped with gray ink layer, hollow window is equipped on gray ink layer, light-emitting panel is installed at hollow window, the light-emitting area of light-emitting panel corresponds with the pattern of color film display screen, light-emitting panel includes touch sensor, and touch sensor is used to detect touch position.Color film display layer, high cover ink layer, translucent color ink layer are closely combined, high cover ink layer effectively blocks the light of non-display area, eliminates light scattering, so that the light that passes through hollow area cannot form scattering on ink layer, finally the pattern that presents is bright, clear, not fuzzy, color performance is better.

The invention relates to the technical field of microwave remote sensing, in particular to a soil radiation shielding device and method for a foundation microwave radiometer. The shielding device comprises a microwave radiometer, an automatic lifting platform, a shielding net and a terminal console, the microwave radiometer is placed on the upper end face of the automatic lifting platform and erected on a forest canopy, and the shielding net is laid on soil below the forest canopy to be detected. The terminal console is in electric control connection with the microwave radiometer and used for adjusting the observation angle and azimuth angle of the microwave radiometer, and the terminal console is in electric control connection with the automatic lifting platform and used for adjusting the height of the automatic lifting platform. The soil radiation shielding device and method for the ground-based microwave radiometer aim at solving the problem that the ground-based microwave radiometer cannot shield surface soil radiation when measuring forest canopies in the field.

The invention relates to the technical field of bridge construction equipment, in particular to bridge foundation pile reinforcing equipment and a reinforcing method for bridge maintaining.The bridge foundation pile reinforcing equipment comprises a self-adaptive protection part installed on the outer side of a prefabricated pier, the self-adaptive protection part comprises a plurality of splicing protection covers and a self-adaptive shielding mechanism, and the splicing protection covers are spliced with one another; a heat preservation layer is arranged in the wall thickness of the assembly protection cover, a temperature adjusting heating device and a temperature sensor are further installed on the inner wall of the assembly protection cover, and the self-adaptive shielding mechanism comprises a multi-section telescopic shaft, a heat preservation shielding layer, a sealing mechanism and a stable binding mechanism. The application range can be widened, and meanwhile the mounting quality of the bridge pier is improved.

The invention discloses multifunctional AB glue combined with a blue light blocking peep-proof structure. The multifunctional AB glue comprises a first PET release film, a peep-proof blue light structure layer, an anti-static coating, an anti-impact porous structure silica gel layer and a second PET release film, according to the invention, an AB glue structure integrating blue light blocking and preventing and efficient peep-proof functions is integrated, the structure integrates an inorganic nanotechnology and a high polymer material composite technology, accurate absorption and effective shielding of blue light in a specific wave band of 435-440 nm are realized, blue light penetration is effectively suppressed, smooth penetration of visible light in a wide range of 440-780 nm is maintained, and the blue light-blocking peep-proof coating has the advantages of high light-blocking and peep-proof functions, high light-blocking and peep-proof functions and high light-blocking and peep-proof functions. And in order to further improve the visual quality, the design adopts a mode of deeply fusing the blue light blocking solution and the black resin and backfilling the base material, so that not only is the blue light prevention performance enhanced, but also the overall transmittance is up to 73%.

The utility model discloses a kind of wiring boxes of locomotive motor box with quick wiring, including wiring box body, the electric connection of the other end of splicing plug block has connecting wire, spring rotating shaft is rotationally connected with the interface groove one side upper end edge, and spring rotating shaft other side fixedly connected with closure cover, the buckle is fixedly connected with the inside convex of closure cover。The wiring box of locomotive motor box with quick wiring can be positioned by interface groove, splicing plug block and be inserted into connecting wire, and can be quickly buckled and locked by locking lug, locking buckle groove, installation is stable, and removal distribution, and can be clamped and installed by pressing part and metal contact block, electric connection effect is good, and after connecting wire connection, it can be clamped and protected by closure cover, buckle, and after installation is removed, it can be automatically closed by spring rotating shaft, closure cover, and protection is good, and wiring box body, box cover can be effectively shielded and insulated, safer to use.

The utility model relates to the technical field of power plant chimneys, and discloses a power plant chimney with a CEMS (continuous emission monitoring system) equipment platform, which comprises a chimney body, a steel structure frame and an outer vertical surface, the steel structure frame is arranged outside the chimney body, and the outer vertical surface is mounted on the outer side of the steel structure frame in a wrapping manner; a platform layer is further arranged on the steel structure frame, the platform layer comprises an equipment area and a landscape area, and the equipment area is located on one side of the chimney body and used for setting CEMS equipment and worker overhauling operation; the landscape area is located on the other side of the chimney body, a landscape balcony is further arranged on the outer side of the steel structure frame, and the landscape balcony protrudes out of the outer side of the outer vertical face. Stairs and an elevator are further arranged in the steel structure frame, and the stairs and the elevator are communicated with the platform layer. The chimney body is subjected to enclosure decoration through the outer vertical face, the regularity of the power plant chimney is improved, the chimney shape and the urban environment are coordinated and fused, the high-position view field of the chimney is fully utilized, and the rest viewing function is introduced under the condition that CEMS equipment overhaul is not affected.

The utility model discloses a household appliance wire harness with a flame retardation function, comprising a main body unit, the main body unit comprises a wire core and an anti-oxidation layer, the wire core is sleeved with an insulation sleeve, the anti-oxidation layer is internally provided with a fireproof layer, the fireproof layer is internally provided with a reinforcing layer, the reinforcing layer is internally provided with an anti-interference layer, and the anti-interference layer is internally provided with a flame retardation layer. The anti-interference layer is filled with a filling layer; and the mounting unit comprises two placing shells, connecting grooves are formed in the two placing shells, and a connecting shell is jointly arranged in the two connecting grooves. According to the utility model, the filling effect is realized through the arrangement of the filling layer, the lead is prevented from shaking inside, the anti-interference layer can effectively shield external signals, the anti-interference effect is good, the anti-shielding function of connection equipment is improved, the fire-proof layer is arranged to avoid the phenomenon of combustion of the wire cores, and meanwhile, open fire is isolated, so that the service life of the connection equipment is prolonged. And the anti-oxidation layer can play a better anti-oxidation role on the wire core, so that the service life of the wire harness is prolonged.

The utility model relates to detachable high pressure test area temporary enclosure technical field for engineering, especially detachable high pressure test area temporary enclosure for engineering, technical scheme: a detachable high pressure test area temporary enclosure for engineering, including enclosure base, installation column, installation slot, nanometer zinc oxide conductive enclosure, high strength polyimide fiber web, conductive column, containing groove, mounting plate and grounding needle, the top surface of enclosure base is provided with installation column, the inside of installation column is opened with installation slot, the inside of installation slot is provided with nanometer zinc oxide conductive enclosure, the utility model adopts nanometer zinc oxide conductive enclosure to form continuous conductive layer, and the current is conducted to grounding needle through conductive column, constructs complete faraday cage, effectively shields electric field, promotes security protection level, and superimposes high strength polyimide fiber web, strengthens structure rigidity again, and also as the supplementary layer of electric field shielding, improves the overall strength and stability of enclosure.

The utility model relates to a winding, weaving, wear-resistant and anti-electromagnetic interference sleeve, which is provided with a wall, and the wall is provided with opposite edges longitudinally extending between two ends. The wall is wound into a tubular shape about a central longitudinal axis, the tubular structure defining a closed cavity dimensioned to receive an elongate member therein. The wall is woven from warp filaments extending substantially parallel to the central longitudinal axis and weft filaments extending substantially transverse to the warp filaments. The warp wires include conductive wires provided as metal wires and separate non-conductive warp wires. The weft includes a heat-set filament that is heat-formed to bias the wall into a tubular structure and bias the opposing edges into an overlapping relationship with each other. And the weft yarns further comprise conductive yarns. The sleeve provided by the utility model can effectively shield electromagnetic interference, and can also prevent a protected lead and / or external elements from being worn at the same time.

The invention relates to a vehicle-mounted folding screen automatic folding and unfolding device and method based on one-way linear motion. The automatic folding and unfolding method comprises an outward folding process and an inward folding process. On one hand, on the basis of one-way movement in the linear direction perpendicular to the bin opening, synchronization and coherence are formed between inward folding or outward extending and overturning in cooperation with a movement guide path formed by the translation section and the flattening section, namely, folding and unfolding are completed in mutual movement cooperation, the power structure is optimized, and the manufacturing cost and the failure rate are reduced; on the other hand, on the basis of cooperation between the two motions, the folding screen does not need to be completely exposed, the unfolded folding screen is in a one-way self-locking state and is close to a bin opening to be flatly unfolded, meanwhile, the needed unfolding and folding space is effectively shortened, effective shielding can be formed, and the overall attractiveness is improved.

The present invention relates to a semi-quantitative urine zinc test strip, a preparation method and application thereof, and belongs to the field of analysis and detection. A semi-quantitative urine zinc test strip is provided, which includes a zinc test strip; the zinc test strip is obtained by soaking and drying the test strip in a substrate impregnation liquid, and the substrate impregnation liquid includes: 0.01% by mass of 2-(5-bromo-2-pyridyl azo)-5-[N-propyl-N-(3-sulfopropyl) amino] phenol disodium salt, 0.5-1M N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid, 0.1%-1% by mass of polyethylene glycol monooctylphenyl ether, 1%-5% by mass of a masking agent, and the solvent is deionized water; wherein the masking agent includes sodium hexametaphosphate and N'-(sodium toluenesulfonate) thiourea. This urine zinc semi-quantitative test strip can realize visual distinction and interpretation of low concentration zinc ions, and has strong anti-interference ability and high accuracy, making it suitable for home use.

This utility model relates to a high-intensity light protective goggle with an automatic light-changing filter, comprising a frame and a headband fixedly connected to the frame. Its innovation lies in the fact that it also includes an automatic light-changing filter, a power supply assembly, a main control circuit board, and a light signal receiver. The automatic light-changing filter is fixedly installed in the frame via an automatic light-changing filter cover plate. The automatic light-changing filter is electrically connected to both the power supply assembly and the main control circuit board, which is also electrically connected to the light signal receiver. It features the ability to quickly protect the eyes and prevent temporary and permanent damage from strong light.

The invention discloses a preparation method of a complex-shaped polyethylene radiation shielding module for a fusion reactor. The method comprises the following key steps: selecting a high-density polyethylene / boron nitride composite material as a printing material; designing a three-dimensional model of the radiation shielding module; printing parameters are determined; slicing and printing; after printing is completed, post-processing is carried out; testing radiation shielding performance; and installing the radiation shielding module which is tested to be qualified at a designated position. According to the method, the absorption efficiency of neutrons and gamma rays is improved by utilizing the high hydrogen content of a polyethylene material, the mechanical property of a printing material is improved by utilizing boron nitride, the method can be suitable for manufacturing radiation-proof shielding parts with various complex shapes and low cost conveniently and quickly required by a shielding module, and correct installation and effective shielding of the module are ensured.

The utility model relates to a full-isolation type water quality detection circuit, which is characterized in that a main power supply module supplies power to a single chip microcomputer master control module and a display module, is electrically connected with a detection sensor signal processing module through a first power supply isolation module, and is electrically connected with a current loop module through a second power supply isolation module; the main power supply module is electrically connected with the isolation type 485 communication module through the third power supply isolation module; the single-chip microcomputer master control module is connected with the display module. The detection sensor signal processing module is in signal connection with the single-chip microcomputer master control module through the first digital isolation module. The current loop module is in signal connection with the single-chip microcomputer master control module through the second digital isolation module. The isolation type 485 communication module is in signal connection with the single-chip microcomputer master control module. According to the invention, isolation of interaction between the circuit and the external environment is realized, and effective isolation between functional modules of the circuit is ensured, so that the anti-interference capability in the working process is stronger, the detection data is more stable, and the operation test is more reliable.

The utility model relates to the technical field of fabrics, and discloses a fabric with antibacterial and anti-ultraviolet functions, a fabric body is formed by combining a surface layer, an antibacterial layer, a comfortable layer, an elastic layer, an anti-ultraviolet layer and a bottom layer, the lower surface of the surface layer is fixedly connected with the antibacterial layer, the lower surface of the antibacterial layer is fixedly connected with the comfortable layer, and the bottom layer is fixedly connected with the elastic layer. The lower surface of the comfortable layer is fixedly connected with an elastic layer, the lower surface of the elastic layer is fixedly connected with an ultraviolet-proof layer, the lower surface of the ultraviolet-proof layer is fixedly connected with a bottom layer, and air holes are formed in the fabric body. According to the antibacterial fabric, the antibacterial layer is formed by mixing the zinc oxide, the titanium dioxide and the loaded silver, so that the fabric body has a relatively strong antibacterial effect, growth of microorganisms such as bacteria and fungi can be effectively inhibited, the fabric is kept clean and sanitary, harm to a human body caused by bacterium breeding is avoided, and the wearing safety of the fabric body can be effectively improved.

The utility model relates to the technical field of kumquat planting, in particular to a multifunctional shed for kumquat planting. The multifunctional shed comprises stand columns, supporting columns, side columns, pressing rods, an insect-proof film and a waterproof film, wherein the insect-proof film and the waterproof film cover a shed frame. The insect-proof film effectively prevents insect pests, the waterproof film has a rainproof function, fruit cracking is reduced, and meanwhile the waterproof film can be closed under the high-temperature condition to reduce sunscald; in addition, the shed frame is specially provided with a drainage channel, rainwater drainage is optimized, and the roots are prevented from being waterlogged; the supporting columns are provided with sliding rails and sliding blocks and used for adjusting the coverage area of the waterproof film so as to adapt to different weather conditions. The design of the stand columns considers the stability of the structure and does not interfere with planting and construction operation. The utility model aims to provide a stable and adjustable kumquat planting environment, and aims to improve the environmental conditions of kumquat planting, especially for the variety of crisp and honey kumquats which are susceptible to sunburn and fruit cracking.

The present invention provides a fan-out type packaging structure and a manufacturing method thereof. The fan-out type packaging structure includes a redistribution layer, at least one plastic encapsulation layer, at least one first shielding layer, at least one chip and at least one electrical connector. The redistribution layer includes a grounding circuit layer, the chip and the electrical connector are arranged on the first surface of the redistribution layer, the electrical connector is located outside the chip and is electrically connected to the grounding circuit layer; the plastic encapsulation layer is arranged on the first surface of the redistribution layer, encapsulating the electrical connector and the chip; the first shielding layer at least partially covers the side surface of the plastic encapsulation layer; the electrical connector is at least partially exposed to the side surface of the plastic encapsulation layer and is electrically connected to the first shielding layer, and the first shielding layer and the grounding circuit layer are electrically conductive through the electrical connector. The first shielding layer is connected to the grounding circuit layer through the electrical connector, so that the electrical connector can be used to achieve relatively large-area surface contact with the first shielding layer and the grounding circuit layer respectively, reducing the resistance between the three, thereby improving the shielding effect.

The present invention belongs to the technical field of organic polymer compounds, and in particular to a PETG sheet and a preparation method thereof. The PETG sheet of the present invention is made of the following components by mass: 30-40 parts of PETG, 5-10 parts of acrylonitrile-butadiene-styrene copolymer, 10-15 parts of polyethylene terephthalate, 0.5-1 parts of a toughening crosslinking agent, 1-3 parts of a chain extender, 1-5 parts of pentaerythritol stearate, 60-100 parts of an inorganic filler, 1-1.5 parts of an aluminate coupling agent, and 0.5-1.0 parts of an antioxidant; wherein the toughening crosslinking agent is prepared by copolymerization of 2-cyclohexyl acrylate, maleic anhydride, and butyl acrylate. The present invention improves the problem that the PETG sheet has strong hygroscopicity during processing and the insufficient ability of the PETG sheet to resist thermal deformation by using a toughening crosslinking agent.

The present invention discloses a chip shielding interconnection adapter board and a preparation method thereof, the preparation method comprising the following steps: respectively laminating an LCP wiring bottom plate, an LCP bonding layer, and an LCP wiring top plate in alignment, forming substrate interconnection copper pillars by laser drilling and chemical copper deposition; vertically fixing the LCP substrate chip shielding cavity by using a shielding cavity fixing tool; mounting the chip and active / passive devices, wire bonding, and using a potting tool to complete potting to realize the production of a chip shielding interconnection adapter board. The present invention provides a chip shielding interconnection adapter board and a preparation method thereof, the adapter board utilizes the bendable flexible substrate characteristics of LCP to effectively shield and interconnect specific functional chips, and realizes high-density interconnection with external devices by potting, has the advantages of good shielding effect, simple process implementation, high integration, etc., and can meet the miniaturization, multi-function, and high-reliability integration requirements of multi-chip circuit systems.

The utility model relates to the technical field of magnet preparation molds, and discloses a multi-pole radial magnetic ring mold, which comprises a sleeve body, a plurality of radial magnetic rings and a plurality of radial magnetic rings, the multiple magnet structures are arranged on the outer side of the sleeve body, and the multiple magnet structures are distributed in the circumferential direction of the sleeve body at intervals; the shielding blocks are arranged on the outer side of the sleeve body, the number of the shielding blocks is equal to that of the magnet structures, and each shielding block is located between every two adjacent magnet structures. The magnet structures are arranged on the outer side of the sleeve body, the magnet structures generate an external orientation magnetic field, the magnet ring is oriented in the forming process of the magnet ring, the magnet structures are distributed in the circumferential direction of the sleeve body at intervals so that the magnet ring can be of a multi-pole radial structure, and one shielding block is arranged between every two adjacent magnet structures so that the trend of the magnetic field can be changed; the interference of a magnetic field on a concave mold cavity is reduced, so that the orientation force at the joint of two adjacent magnetic poles on the magnetic ring is reduced, the influence on a formed blank is reduced, and the phenomenon that the sintered magnetic ring cracks is reduced.

The utility model provides a rest greenhouse with a sunshade function, which belongs to the technical field of public buildings and comprises a greenhouse body, a control panel is fixedly connected to one side of the inner wall of the greenhouse body, rest seat plates are fixedly connected to two sides of the inner wall of the greenhouse body, and the rest seat plates are fixedly connected to the control panel. According to the rest greenhouse with the sun-shading function, sun shading is achieved through the ceiling of the greenhouse body and the solar energy storage plate, pedestrians or passengers can rest on the rest seat plate in the greenhouse body, sunlight is effectively shaded, and the whole greenhouse can be effectively stabilized and prevented from being blown down by wind through the fixing assemblies in cloudy, rainy and windy weather; meanwhile, rainwater in rainy days can be collected by the water storage assembly, the flowerpot is arranged below the water storage assembly, plant death caused by excessive rainwater is effectively prevented, the rainwater collected by the water storage assembly can control the water storage assembly for irrigation through the control panel in sunny days, and the water storage assembly is convenient to use. And the environmental protection property of the device is further improved.

The invention discloses a carbon-metal composite film and a preparation method and application thereof, belongs to the technical field of carbon nanomaterials, and is used for solving the problems that in the prior art, a carbon-metal composite film is high in preparation cost and low in efficiency, and electromagnetic shielding performance needs to be further improved. The preparation method of the carbon-metal composite film comprises the following steps: preparing a metal film I by adopting a chemical vapor deposition method; etching to obtain a metal film II; adding the metal film II into an acidic solution, adding aniline and APS, and reacting to obtain a carbon-metal composite film; according to the preparation method provided by the invention, the cost is reduced, the efficiency is higher, and the prepared carbon-metal composite film not only improves the stability, but also has good electrical measurement shielding performance, and is more suitable for the field of electronics.

The invention belongs to the technical field of scintillator imaging detection, and particularly discloses a high-vacuum light-shielding scintillator imaging sealing structure which comprises a scintillator high-vacuum cylinder, a light-shielding exhaust multi-stage structure and a beryllium window pinhole imaging structure. The light-shielding exhaust multi-stage structure comprises a light-shielding exhaust barrel and at least two light-shielding exhaust rings, the adjacent light-shielding exhaust rings are connected in the light-shielding exhaust barrel at intervals, a plurality of exhaust holes distributed in the circumferential direction are formed in the end face of each light-shielding exhaust ring, and the two ends of the light-shielding exhaust barrel are communicated with each other; one end of the scintillator high-vacuum cylinder sequentially passes through the light-shielding exhaust ring, is positioned in the light-shielding exhaust cylinder and is connected with the light-shielding exhaust cylinder and the beryllium window pinhole imaging structure; a scintillator is connected in the scintillator high-vacuum cylinder, and an exhaust port is formed in the scintillator high-vacuum cylinder. The scintillator imaging sealing structure can perform multi-layer reflection shielding on visible light stray light, realizes efficient and rapid discharge of gas in a high-vacuum cavity, and improves the detection efficiency and the resolution capability of the scintillator imaging sealing structure under a high-vacuum condition.

The application discloses a kind of MXene-based composite wave-absorbing materials and preparation method thereof, water-based electromagnetic functional color paste and preparation method and application, the MXene-based composite wave-absorbing material provided in the application is with two-dimensional layered MXene nanosheet as carrier, and Fe3O4@Ag core-shell structure nanosphere is loaded on the surface and interlayer of two-dimensional layered MXene nanosheet.The above-mentioned MXene-based composite wave-absorbing material is by electrostatic self-assembly process, Fe3O4@Ag core-shell structure nanosphere is loaded on the surface and interlayer of two-dimensional layered MXene nanosheet, the composite of both is realized.In addition, the application further provides water-based electromagnetic functional color paste comprising the above-mentioned composite wave-absorbing material, the color paste shows excellent storage stability and outstanding electromagnetic shielding and absorption performance, and can be suitable for a variety of coating processes.