70results about How to "Regular structure" patented technology

The invention discloses a preparation method of a flame-retardant viscose fiber with an antibacterial function, which comprises the following steps: (1) under sufficient stirring, sequentially adding a phosphorus flame retardant, a dispersant and graphene oxide into deionized water with an alkaline pH value, and stirring and ball-milling to obtain a flame retardant dispersion liquid; (2) preparing a spinning stock solution by taking cellulose pulp as a raw material, and adding the flame retardant dispersion liquid into the spinning stock solution by adopting a pre-spinning injection method to prepare a blended spinning stock solution; (3) spinning the blended spinning stock solution in a coagulating bath, and reducing the blended spinning stock solution in an oxidation-reduction bath to obtain a formed tow; and after drafting, carrying out a post-treatment process to obtain the flame-retardant viscose fiber with the antibacterial function. The production process is optimized from multiple aspects such as selection of raw materials for preparing the flame retardant, oxidation reduction and the like, and the prepared flame-retardant viscose fiber has excellent flame retardance, good physical and mechanical properties and antibacterial properties and good wearability.

The invention belongs to the field of chemical technology innovation, and relates to a preparation method for producing an anhydrous formaldehyde catalyst. The catalyst is composed of transition metal and non-metal nitrogen-carbon doped molecular sieves, acidic sites and charge distribution of the molecular sieves are regulated and controlled through nitrogen-carbon doping, meanwhile, metal agglomeration in the reaction process is slowed down through formed metal-N-C bonds, the stability of the catalyst is improved, and the service life of the catalyst is prolonged. The catalyst shows excellent methanol anaerobic dehydrogenation catalytic activity within the temperature range of 400-700 DEG C, the methanol conversion rate reaches 90-99%, meanwhile, the formaldehyde yield reaches 57-67%, and the catalytic performance is kept stable within 70 h.

The present invention belongs to the technical field of polyurethane acrylate, and specifically relates to a polyurethane acrylate for UV light-curing adhesive, and a preparation method and application thereof. The polyurethane acrylate for UV light-curing adhesive described in the present invention is made of the following raw materials: 30-80 parts of unsaturated polyester polyol, 24-32 parts of isocyanate intermediate, and 2-6 parts of hydroxy acrylate; the unsaturated polyester polyol is prepared using unsaturated small molecule dibasic acid, saturated small molecule dibasic acid, and small molecule diol as raw materials; the isocyanate intermediate is prepared by reacting isocyanate monomer with polyol. The polyurethane acrylate for UV light-curing adhesive of the present invention is applied to the preparation of UV light-curing polyurethane acrylate adhesive, which improves the ability of UV light-curing adhesive to resist high temperature and high humidity, and improves its service life; the present invention also provides its preparation method.

The utility model discloses a bottle lid injection mold structure relates to bottle lid production technical field, including bottom plate, ejection fixed plate and backing pad, the middle part of bottom plate outer wall is equipped with ejection fixed plate, and the middle part of ejection fixed plate is connected with backing pad, the side that the backing pad is away from ejection fixed plate is connected with gear mounting plate, and the middle part of gear mounting plate outer wall is connected with core fixed plate, the one side of gear mounting plate outer wall is connected with support seat through screw, and support seat outer wall is equipped with servo motor, and servo motor output fixedly connected with drive gear, the outer wall of drive gear is engaged with transmission gear, and the outer wall of transmission gear is engaged with overbridge gear, and the both sides of overbridge gear outer wall are engaged with driven gear, the inner wall of driven gear is connected with screw core, and the inner wall of screw core is connected with middle core shaft, the inner wall one side of ejection fixed plate is equipped with no.

The application relates to the engine technical field and discloses an integrated brake rocker arm which comprises a rocker shaft, a lubricating oil channel and a brake oil channel are arranged in the rocker shaft and penetrate the rocker shaft in the axial direction, an electromagnetic valve seat is arranged on the rocker shaft, a high-pressure cavity which is communicated with the lubricating oil channel and the brake oil channel is arranged in the electromagnetic valve seat, an electromagnetic valve which is used for controlling the on-off of the lubricating oil channel and the brake oil channel is arranged in the high-pressure cavity of the electromagnetic valve seat, a plurality of air inlet rockers and exhaust brake rockers are further arranged on the rocker shaft, the air inlet rockers and the exhaust brake rockers are communicated with the lubricating oil channel, the exhaust brake rockers are further communicated with the brake oil channel, and the air inlet rockers and the exhaust brake rockers are arranged in an interleaved and spaced mode. The application integrates the conventional valve rocker and the exhaust brake rocker, cancels the split independent arrangement structure, effectively reduces the installation and arrangement space, and is higher in the integrated degree of the whole machine; and the brake hydraulic medium is realized in the built-in type transmission, the external pipeline is less, and the risk of easy wear and leakage of the external oil pipe is avoided.

The invention discloses flaky alumina and a preparation method thereof, the flaky alumina is in a square sheet shape and has a single crystal structure, the grain size of the flaky alumina is 300-1300 nm, and the grain thickness is less than or equal to 150 nm. The preparation method comprises the following steps: placing roasted SB powder and a quaternary ammonium base solution in a pressure container in a solid-liquid two-phase separation manner, carrying out a gas-solid reaction under certain heat treatment conditions, and drying and roasting the reacted solid powder to obtain the flaky aluminum oxide. The flaky aluminum oxide is regular in structure and flat and smooth in surface, can be used as a polishing material, a coating, a catalysis material and an adsorption material, and is simple in preparation process, easy in raw material obtaining and easy in industrial production.

The invention relates to a YOLO v3 post-processing hardware acceleration method based on a look-up table method, which comprises the following steps of: 1) establishing two look-up tables according to two operators of sigmoid and exp functions involved in a decoding calculation process; 2) analyzing the required storage space according to the quantization bits and the network structure; 3) distributing a corresponding BRAM storage block for the lookup table according to the required storage space; 4) calculating the data to be decoded, and putting a calculation result into a lookup table; 5) inputting to-be-decoded data, putting the to-be-decoded data into the cache unit, and arranging the to-be-decoded data; 6) reading data to be decoded, and searching corresponding calculation data from the lookup table; 7) inputting the calculation data into a parallel calculation unit to obtain decoding data; and 8) putting the decoded data back to the initial position in the cache unit. According to the method, the lookup table is established, the to-be-decoded data in YOLO v3 post-processing is subjected to decoding calculation, post-processing calculation is completed under the condition that few storage resources are used, the hardware scale is remarkably reduced, and the post-processing efficiency is improved.

This invention discloses a method for preparing chemically recyclable polyaldehyde esters. Using linear aldehydes and cyclic anhydrides as raw materials, and Lewis acids or protic acids as catalysts, chemically recyclable polyaldehyde esters are prepared through alternating copolymerization. The general structural formula of the linear aldehyde is as follows: R is selected from alkyl groups with 1 to 20 carbon atoms, alkenyl groups with 2 to 20 carbon atoms, alkynyl groups, terpenyl groups with 5 to 20 carbon atoms, cycloalkyl groups with 3 to 20 carbon atoms, aromatic groups with 5 to 20 carbon atoms, and the above groups containing heteroatoms. This invention discloses a method for successfully preparing polyaldehyde esters from linear aldehydes. The method is simple and controllable, and the product obtained is a fully alternating polyaldehyde ester with a well-defined chain structure. More importantly, the polyaldehyde ester prepared by this method is chemically recyclable; it can be completely depolymerized and converted into raw material monomers through simple pyrolysis, thus achieving the chemical recycling of the polyaldehyde ester.

The invention discloses a sodium methoxide integrated production system which comprises a reaction kettle, a dryer and a quantitative forming mechanism, the quantitative forming mechanism comprises a first fixing plate and a second fixing plate, the second fixing plate is supported and fixed through a supporting frame, and the first fixing plate is fixed to the top end of the second fixing plate through a support. An extrusion opening and a first discharging opening are formed in the first fixing plate, a second discharging opening is formed in the second fixing plate, the second discharging opening is located under the first discharging opening, an extrusion plate and a discharging plate are arranged at the top end of the first fixing plate, and an extrusion die is arranged between the first fixing plate and the second fixing plate. The finished product sodium methoxide is pressed into a cake shape, compared with direct packaging of powder, the cake-shaped structure is more regular and can be arranged more tightly, waste of packaging space is reduced, and the packaging efficiency is improved.

The invention provides a battery power consumption lightweight analysis device, a lightweight log generation device, a battery power consumption lightweight analysis method, a lightweight log generation method, electronic equipment and a computer program product. The battery power consumption lightweight analysis device comprises: a system configuration analysis module for analyzing a system configuration file of a target electronic device to obtain system attribute feature data; the battery statistical data acquisition and analysis module acquires a battery statistical data packet and analyzes the battery statistical data packet to determine battery characteristic data; the lightweight log generation module carries out packaging processing on the system attribute characteristic data and the battery characteristic data to generate a lightweight log file; the log data reading and analyzing module reads the lightweight log file and analyzes the lightweight log file to extract attribute feature data and battery feature data; and the battery power consumption analysis module is used for analyzing the battery power consumption of the target electronic equipment according to the attribute characteristic data and the battery characteristic data to generate a power consumption analysis result.

The application discloses a phased array synthetic jet micro-actuator device, which comprises a substrate, a substrate, a plurality of vibration units and a top cover; the plurality of vibration units are arranged in the space surrounded by the substrate frame along the transverse direction of the substrate; the diaphragm of the plurality of vibration units can generate vibration perpendicular to the surface of the substrate under an applied driving signal; and the input voltages of two adjacent vibration units are opposite; the upper surface of the substrate is sealingly connected with the top cover; the lower surface of the top cover and the vibration upper surface of the plurality of vibration units form a communication airflow channel; along the transverse direction of the substrate, air outlets which are in communication with the airflow channel are respectively arranged on the two end sidewalls of the top cover; along the transverse direction of the substrate, the substrate is provided with an air inlet which penetrates the thickness of the substrate; external airflow can be sucked into the airflow channel through the air inlet; and the vibration units and the air inlet are alternately and spacedly arranged along the transverse direction.

The invention discloses a preparation method of a composite filling microsphere with a multilayer core-shell structure and a product and application of the composite filling microsphere with the multilayer core-shell structure, collagen is wrapped in an inner core of a poly-L-lactic acid microsphere through an emulsification technology, a stable sodium hyaluronate layer is attached to the surface of the poly-L-lactic acid microsphere, and a collagen-poly-L-lactic acid-sodium hyaluronate composite microsphere with the multilayer structure is formed. Sodium hyaluronate on the surface layer of the composite filling microsphere with the multi-layer core-shell structure rapidly absorbs water and swells, and after injection, recesses are immediately smoothed, the outline is supported, and meanwhile, a moisturizing film is formed, so that the filling part is natural in touch and is not rigid. The inner core poly-L-lactic acid microspheres are slowly degraded, continuously release biological signals, accurately stimulate fibroblast proliferation and push self collagen regeneration, the homology of the wrapped collagen and the self collagen of the human body is high, instant filling can be assisted, a template can be provided for new collagen, the regenerated collagen structure is more regular, and the skin elasticity is more lasting.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

This invention relates to the field of polymer synthesis technology. This invention provides a controlled polymerization method for a high-alternation-degree ETFE copolymer, comprising the following steps: (1) adding a solvent to a high-pressure reactor, replacing the air, and then filling it with an initial monomer mixture to a total pressure of 1.5-2.5 MPa, wherein the monomer mixture is a mixture of tetrafluoroethylene and ethylene; (2) heating to 60-85°C, adding an initiator to initiate the polymerization reaction; (3) simultaneously adding the monomer mixture continuously or semi-continuously during the polymerization reaction; (4) adding a chain transfer agent, and discharging the product after the reaction, i.e., the high-alternation-degree ETFE copolymer. This invention also provides a controlled polymerization method for a high-alternation-degree ETFE copolymer. This invention also provides an application of the high-alternation-degree ETFE copolymer in new energy, aerospace, high-end equipment manufacturing, and photovoltaic fields. The high-alternation-degree ETFE copolymer of this invention has high alternation degree (>92%), high thermal stability, and excellent mechanical properties.

The invention discloses a yarn pulling mechanism for glass fiber reinforced plastic grating production. According to the yarn pulling machine, a bottom plate is fixedly connected to the upper surface of a yarn pulling machine base, a plurality of supporting columns are fixedly connected to the end, opposite to the yarn pulling machine base, of the bottom plate, a top plate is fixedly connected to the ends, opposite to the bottom plate, of the supporting columns, and a yarn separation sliding rod is arranged in a groove formed in the upper surface of the bottom plate; a plurality of sliding blocks are slidably connected to the outer side surface of the yarn separation sliding rod, yarn separation rods are fixedly connected to the upper surfaces of the sliding blocks, and a handle is fixedly connected to one side of each sliding block. An operator can hold the handle to slide the sliding block along the yarn separation sliding rod, and the yarn separation sliding rod can be driven to slide together through the sliding rods at the upper end and the lower end. In the yarn pulling process, multiple strands of yarn are stretched at the same time. The yarn separation rods capable of being adjusted in a sliding mode can separate different strands of yarns, and the yarns are prevented from being interwoven and wound together.

The utility model relates to a chair, and discloses a folding chair, which comprises a first support plate, a second support plate and a seat plate. The folded state of the folding chair is designed into a plate shape, and the unfolded chair state is designed on the basis. In the chair state, the first supporting plate and the second supporting plate are used as front and rear ground contact supports, and the seat plate and the first supporting plate are connected through the limiting groove and the limiting protrusion. After the seat plate is connected with the first supporting plate, a triangular structure is formed among the first supporting plate, the second supporting plate and the seat plate, so that the folding chair is stably in a folded state, the bearing capacity of the seat plate is ensured, and the normal use function of a chair is achieved. Compared with the prior art, the folding chair has the advantages that after the folding chair is converted into the folded state from the chair state, the folding chair is regular in shape, small in occupied space and convenient to store, package, move, transport and the like; 2, the state conversion operation of the folding chair is more convenient; and 3, the structure is simpler and more compact, and the cost is lower.

This invention discloses a dual-substrate circularly polarized reconfigurable omnidirectional antenna based on PIN diode control. The antenna comprises a first substrate and a second substrate. The second substrate has a ground plane printed on it, and the first substrate has a radiating patch printed on it. The radiating patch includes a central square patch, a Γ-shaped stub, a loop antenna, PIN diodes, and via shorting posts. Seamless switching between left-hand and right-hand circular polarization is achieved through the on / off combinations of 16 PIN diodes, with a simple switching logic. High polarization purity is achieved in both polarization modes, and the via shorting posts effectively reduce mutual interference between modes, resulting in strong switching reliability. In both circular polarization modes, the relative impedance bandwidth and axial ratio bandwidth are wide. In the left-hand circular polarization mode, the relative impedance bandwidth reaches 19.38%, covering 2.33-2.83GHz with |S11|<-10dB, and the axial ratio bandwidth reaches 26.3%, covering 2.08-2.71GHz with AR<3dB. In the right-hand circular polarization mode, the relative impedance bandwidth reaches 19.8%, covering 2.32-2.83GHz with |S11|<-10dB, and the axial ratio bandwidth reaches 23.43%, covering 2.11-2.67GHz with AR<3dB, which is significantly better than existing narrowband designs of the same type.

The present application relates to the technical field of squid processing, and provides a squid product production and filling device, which includes a transmission device, a slitting device, a superimposing device and a plurality of curling devices, wherein the transmission device includes a plurality of transmission tracks; the slitting device is arranged on the transmission device along the transmission direction; the superimposing device is arranged on the transmission device, and the superimposing device is located between the slitting device and the output end of the transmission device; and a plurality of curling devices are connected to the output end of the transmission track. The squid product production and filling device provided by the present application separates and overlaps the head and tail of the squid, bends the head of the squid to form a wrapping space, and allows the tail of the squid to enter the wrapping space, thereby obtaining a squid with a regular appearance and a neat tail. The squid that is stacked and curled during packaging has a simple structure, which can effectively improve the efficiency of packaging and make the appearance of the packaging more beautiful and reliable.

This invention proposes a method and system for Thangka image restoration, relating to the field of image restoration. The method includes: preprocessing the acquired original Thangka images; classifying the preprocessed images into first, second, third, and fourth Thangka images according to their complexity from low to high; sequentially performing damage processing on these Thangka images to form structurally damaged, textured, semantically abnormal, and mixed-damaged images; training these damaged images to form a Thangka restoration model; and using the Thangka restoration model to restore the Thangka image to be restored, forming the target restored image. This invention combines the classification and damage processing of different Thangka image complexities to obtain different types of damaged images, adapting to different damage scenarios. Furthermore, by training and optimizing different damaged images separately, the resulting Thangka restoration model can comprehensively restore Thangka images, ensuring that the restored image has a regular structure, natural texture, reasonable semantics, and high fidelity.

The invention relates to the technical field of kitchen appliances, in particular to an integrated range hood system. The integrated extractor hood system comprises a machine shell, the upper portion of the machine shell is provided with a first heat exchange cavity and a second heat exchange cavity independent of the first heat exchange cavity, the lower portion of the machine shell is provided with a smoke exhaust cavity, the lower side of the machine shell is provided with a smoke suction opening, and the smoke suction opening and the smoke exhaust cavity are communicated to form an oil smoke suction channel; the heat exchange assembly comprises an evaporator arranged in the first heat exchange cavity and a condenser arranged in the second heat exchange cavity; an air return opening, an air supply opening and an air inlet are formed in the machine shell, the air return opening and the air supply opening communicate with the first heat exchange cavity, and the air inlet communicates with the second heat exchange cavity; the exhaust pipeline is provided with a first connector and a second connector used for being communicated with the public flue, and the outlet end of the oil smoke suction channel and the outlet end of the second heat exchange cavity are both communicated with the first connector of the exhaust pipeline. The integrated range hood system is installed in a kitchen to achieve oil smoke extraction and temperature adjustment, the structure is compact, and the occupied space is small.

The invention discloses a hollow dahlia-shaped nickel-cobalt selenide composite electro-catalytic material and a synthesis method and application thereof.The hollow dahlia-shaped nickel-cobalt selenide composite electro-catalytic material is prepared by taking SiO2 spheres as a template and adopting a hydrothermal-solvothermal combination method, specifically, firstly, a nickel-silicon hydroxide precursor is prepared through a hydrothermal reaction method, and then the hollow dahlia-shaped nickel-cobalt selenide composite electro-catalytic material is prepared; the method is simple to operate, environment-friendly and energy-saving, the morphology and the structure are easy to control, then the NiSe / Co9Se8 hollow nanoflower composite material is prepared by adopting a solvothermal method, and the method can effectively inhibit oxidation and has the advantages of wide application range, easy control of the reaction process, low crystallization temperature and the like, so that the two methods are combined to accurately control crystal growth and a microstructure, and the method is suitable for large-scale production of the NiSe / Co9Se8 hollow nanoflower composite material. Therefore, the electrocatalyst with high activity, high stability and high specific surface area is prepared, and the electrocatalyst shows excellent HER and OER electro-catalysis performance under the alkaline condition.

The utility model relates to a bed cover with elastic tight package angle structure, including bed cover, the outer surface bottom of bed cover is fixedly connected with the edge binding, the outer surface bottom of edge binding is fixedly connected with folding gasket, the outer surface bottom of edge binding is fixedly connected with magic tape wool surface, the outer surface of folding gasket is fixedly connected with magic tape hook surface, the outer surface of magic tape hook surface and the outer surface of magic tape wool surface are bonded, the outer surface of edge binding is fixedly connected with the limiting edge. In the utility model, through setting up the folding gasket that can fold and unfold and is adjusted through magic tape bonding, cooperation has the elastic elastic silk, makes the bed cover can adapt to the mattress of different thickness, avoids the situation that the bed cover cannot be used and is discarded because of the thickness change of mattress, saves the money cost of user, reduces the burden of storage and processing old bed cover.

The invention discloses polythioester with a main chain containing a carbon-carbon double bond, the polythioester is of a fully alternating copolymerization structure, each repetitive unit contains a sulfur element and the carbon-carbon double bond, the structural general formula is shown in the following formula (I) or (II), and in the formula, n is selected from 1-500; r1 is selected from hydrogen, methyl or isobutyl; r2, R3 and R4 are independently selected from hydrogen or methyl; r5 is selected from hydrogen, methyl, ethyl or phenyl; and R6 is selected from hydrogen or methyl. The invention discloses alternating copolymerization polythioester containing a carbon-carbon double bond with a clear chain structure, wherein the content of an alternating copolymerization chain link is 99%; a carbon-carbon double bond is introduced into a main chain, so that the polythioester has the advantages of degradability and sulfur content, also has high reaction activity, and is convenient for chemical modification for practical application. (I); and (II).

The invention discloses a lead thiophosphate composite nitrogen-doped carbon porous microsphere material as well as a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage materials. The preparation method of the lead thiophosphate composite nitrogen-doped carbon porous microsphere material comprises the following steps: dissolving a lead salt in an organic solvent, dissolving 2-methylimidazole in water, mixing the two solutions, carrying out solvothermal reaction, separating out a product, and reacting with a gas-phase sulfur source and a phosphorus source under the protection of inert gas to obtain the lead thiophosphate composite nitrogen-doped carbon porous microsphere material. The lead thiophosphate composite nitrogen-doped carbon porous microsphere composite material is obtained. According to the invention, a metal organic framework template method and a chemical vapor deposition method are ingeniously combined, and a brand new path for controllably preparing the lead thiophosphate composite nitrogen-doped carbon porous microsphere material is provided. When the prepared lead thiophosphate composite nitrogen-doped carbon porous microsphere material is used as a sodium ion battery negative electrode, a porous microsphere negative electrode formed by compounding lead thiophosphate and nitrogen-doped carbon shows remarkably improved electrochemical performance.

The invention discloses a four-micro-ring band-pass filter which comprises a first linear waveguide, a second linear waveguide and a third linear waveguide which are parallel to one another and are sequentially arranged in a first direction, and the first linear waveguide, the second linear waveguide and the third linear waveguide extend in a second direction perpendicular to the first direction; the first micro-ring and the second micro-ring are arranged between the first linear waveguide and the second linear waveguide and are sequentially arranged along a first direction; and the third micro ring and the fourth micro ring are arranged between the second linear waveguide and the third linear waveguide and are sequentially arranged along the first direction. By cascading the two double-ring filters with different radiuses and utilizing the vernier effect, the ultra-large FSR of the C wave band is realized while the low loss is ensured, the structure is compact, the process is mature, and the thin-film lithium niobate optical chip is suitable for preparation and application of a large-scale thin-film lithium niobate optical chip.

This invention discloses a heterocyclic polyarylamide-polyhydroxyarylamide precipitated fiber, its preparation method, and a heterocyclic polyarylamide-polybenzodioxazole paper, belonging to the technical field of high-performance organic fiber and paper preparation. The preparation method of the precipitated fiber includes the following steps: A. Preparation of the polymerization solution: 3,3'-dihydroxybenzyl diamine (DHB) and 2-(4-aminophenyl)-5-aminobenzimidazole (DAPBI) are dissolved in an organic solvent containing a solubilizing salt, and then terephthaloyl chloride is added to react and obtain a polymer solution with a solid content of 1-10%; B. Precipitation: After degassing, filtering, metering, and spinning, the polymer solution is mixed with a coagulation bath and precipitated to obtain the heterocyclic polyarylamide-polyhydroxyarylamide precipitated fiber. A heterocyclic polyarylamide-polybenzodioxazole paper prepared from this precipitated fiber is also provided. This invention introduces a heterocyclic polyaromatic amide structure through copolymerization, which not only improves the strength and composite properties of the cyclized PBO paper, but also maintains a decomposition temperature comparable to that of pure PBO fiber, exceeding 600℃, demonstrating excellent thermal stability. Furthermore, this method is simple and easy to implement, making it suitable for industrial production applications.

The invention relates to the technical field of capacitor preparation, in particular to a method for preparing a high-temperature resistant poly (3,4-ethylenedioxythiophene) sheet-type laminated aluminum electrolytic capacitor, comprising aluminum foil treatment, chemical polymerization, electrochemical polymerization, coating a carbon-containing conductive layer, coating a silver-containing conductive layer, lamination bonding, epoxy resin encapsulation and aging. In the process of chemical polymerization and electrochemical polymerization, a polysulfonic acid with a large molecular weight and a high melting point is introduced as a dopant and a cross-linking agent, and cross-linking between poly (3,4-ethylenedioxythiophene) molecular chains is achieved through the interaction between sulfonic acid radicals and positively charged poly (3,4-ethylenedioxythiophene) molecular chains, thereby improving the thermal stability of poly (3,4-ethylenedioxythiophene) molecular chains, and further obtaining poly (3,4-ethylenedioxythiophene) with a regular structure and high temperature resistance, so that the prepared aluminum electrolytic capacitor has the advantages of low leakage current, small equivalent series resistance, stable capacitance and the like when used for a long time in a high-temperature environment.

This invention discloses a telescopic live-line working insulation shielding device with an insulator as the fixing point, belonging to the technical field of insulation shielding devices. It includes: a fixing sleeve, fitted onto the top of the insulator body, with cable-passing grooves on both sides; and a shielding assembly, disposed on the side of the fixing sleeve, comprising multiple hard and soft covers; the multiple hard and soft covers are sequentially and alternately connected to form a hollow sleeve structure, which can be opened and closed relative to each other at its radial midpoint to secure it to the cable; and the hollow sleeve structure has two switchable states: a bent state and a rigid straight state. This telescopic live-line working insulation shielding device with an insulator as the fixing point improves the safety and shielding reliability of live-line work by alternately splicing hard and soft covers to form the shielding assembly.

The application provides a common metal mask plate and an evaporation system. The common metal mask plate comprises a peripheral area and an opening area, the opening area has a plurality of evaporation openings, the peripheral area and the opening area each are a part around the evaporation openings and respectively comprise a bridge part and a first etching part arranged in sequence close to the evaporation openings, a first surface of the bridge part is protruded from a first surface of the first etching part and is used for being attached to a to-be-evaporated substrate, the first etching part is configured to form a first cavity with the to-be-evaporated substrate, the first cavity is communicated with the evaporation openings, an edge of the peripheral area away from the evaporation openings comprises a second etching part, a welding spot for welding a frame is arranged in the second etching part, the first surface of the first etching part is protruded from the first surface of the second etching part, the second etching part is configured to form a second cavity with the to-be-evaporated substrate, and the second cavity is communicated with an external environment. The application can reduce the attachment area of the common metal mask plate and the to-be-evaporated substrate.