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135results about How to "Regular structure" patented technology

Double-network modified asphalt and preparation method thereof

The invention discloses double-network modified asphalt and a preparation method thereof, which are characterized in that self-healing mechanism research is carried out on the basis of hydrogen bond-DA double bond asphalt, and the self-healing mechanism is ascertained in multiple scales. The method comprises the following steps: firstly, carrying out a blank experiment on dual-network asphalt by adopting a force-measuring ductility instrument to compare mechanical property changes under different double bond contents; secondly, performing hydrogen bond and DA bond crosslinking analysis on the asphalt sample through Fourier infrared spectroscopy to ensure double-bond double-network synthesis; and finally, verifying the rheological property of the dual-network asphalt by using a differential scanning calorimeter. The research result can play a certain guiding role in deeply exploring the self-healing capability of the asphalt material and expanding the application of the asphalt material.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Graphene composite film with high thermal conductivity as well as preparation method and application of graphene composite film

The invention discloses a graphene composite film with high thermal conductivity and a preparation method and application thereof. The preparation method comprises the following steps: preparing a graphene film on a copper-nickel alloy substrate by adopting a CVD (Chemical Vapor Deposition) method; wherein the graphene film comprises a single-layer graphene structure and a pagoda-shaped multi-layer graphene core structure dispersed on the surface of the single-layer graphene structure; applying the graphene oxide slurry to the surface of the graphene film so as to form a graphene / graphene oxide composite film; and carrying out carbonization, graphitization and calendaring treatment on the graphene / graphene oxide composite film to prepare the graphene composite film with high thermal conductivity. The method not only solves the problems that the graphene film prepared by the traditional CVD method is thin in thickness and cannot be commercially used on a large scale, but also improves the heat-conducting property of the graphene film prepared by the oxidation-reduction method, and fully exerts the intrinsic characteristics of the graphene material, so that the graphene film has higher market competitiveness.
Owner:SHENZHEN BTR NEW ENERGY TECH RES INST CO LTD

Preparation method of flame-retardant viscose fiber with antibacterial function

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.
Owner:WEIFANG XINLONG BIOMATERIALS CO LTD

Urethane acrylate for UV (ultraviolet) photocuring adhesive as well as preparation method and application thereof

The invention belongs to the technical field of urethane acrylate, and particularly relates to urethane acrylate for a UV photocuring adhesive as well as a preparation method and application of the urethane acrylate. The polyurethane acrylate for the UV photocuring adhesive is prepared from the following raw materials: 30 to 80 parts of unsaturated polyester polyol, 24 to 32 parts of an isocyanate intermediate and 2 to 6 parts of hydroxyl acrylate, the unsaturated polyester polyol is prepared by taking unsaturated small-molecular dibasic acid, saturated small-molecular dibasic acid and small-molecular dihydric alcohol as raw materials; the isocyanate intermediate is prepared by reacting an isocyanate monomer with polyol. The polyurethane acrylate for the UV light-cured adhesive is applied to preparation of the UV light-cured polyurethane acrylate adhesive, so that the high-temperature resistance and high-humidity resistance of the UV light-cured adhesive are improved, and the service life of the UV light-cured adhesive is prolonged; the invention also provides a preparation method thereof.
Owner:SHANDONG INOV POLYURETHANE

Preparation method for producing anhydrous formaldehyde catalyst

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.
Owner:HUBEI XINGFA CHEM GRP CO LTD +1

Aviation kerosene catalyst and preparation method and application thereof

The invention provides an aviation kerosene catalyst and a preparation method and application thereof. The preparation method of the aviation kerosene catalyst comprises the following steps: dissolving a triblock copolymer P123 in an inorganic acid aqueous solution, stirring for a period of time to fully dissolve the triblock copolymer P123, and uniformly mixing; adding an aluminum source, and stirring for a period of time; adding a cerium source and / or a lanthanum source, and stirring for a period of time; adding a cobalt source, and stirring for a period of time; dropwise adding a silicon source, and stirring for a period of time to obtain a mixture; after the mixture is subjected to crystallization reaction, the obtained product is at least subjected to cooling, washing, solid-liquid separation, drying and roasting, and the aviation kerosene catalyst is obtained. The aviation kerosene catalyst provided by the invention is prepared by the preparation method. The invention also provides application of the aviation kerosene catalyst in preparation of aviation kerosene from synthesis gas. The catalyst can improve the selectivity of C8-C16 aviation kerosene components.
Owner:CHINA NAT PETROLEUM CORP

Air fryer

The air fryer comprises a machine shell and a reflecting cover, the reflecting cover divides the inner space of the machine shell into a heating cavity and a heat dissipation cavity, a hot air fan and a heating piece are arranged in the heating cavity, a motor for driving the hot air fan and a heat dissipation fan connected with the motor are arranged in the heat dissipation cavity, and an air inlet communicated with the heat dissipation cavity is formed in the machine shell. An air guide cover and a plurality of air guide ribs located on the periphery of the air guide cover are further arranged in the heat dissipation cavity, the air guide cover is provided with an air guide inlet and an air guide outlet communicated with the outside atmosphere, the heat dissipation fan is arranged in the air guide cover, a heat dissipation air channel is formed between every two adjacent air guide ribs in the multiple air guide ribs, and the heat dissipation air channels are communicated with the air inlet and the air guide inlet. Air flow extracted by the rotating cooling fan through the air inlet sequentially flows through the cooling air channels and the air guide cover and then is exhausted through the air guide outlet. According to the air fryer, the airflow short circuit phenomenon is effectively reduced, the problem of high temperature of a local area is solved, the heat dissipation effect is improved, and the machine surface temperature is reduced.
Owner:HONGYANG HOME APPLIANCES

Agricultural film with improved light quality and increased temperature and preparation method thereof

The invention relates to the technical field of functional agricultural films, and specifically discloses an agricultural film with improved light quality and temperature increase and a preparation method thereof. The agricultural film comprises the following raw materials: terephthalic acid, adipic acid, ethylene glycol, 1,4-cyclohexanediol, a fluorescent composite material, a catalyst and an auxiliary agent. The preparation method comprises the following steps: uniformly mixing terephthalic acid, adipic acid, ethylene glycol, 1,4-cyclohexanediol and the catalyst, and then, under the protection of an inert gas, performing an esterification reaction for 3-5 hours, heating the mixture for a polycondensation reaction for 1-3 hours, and cooling the mixture to obtain a polyester material. The polyester material, the fluorescent composite material and the auxiliary agent are uniformly mixed, extruded into granules, and then film-blowing is performed using a film blowing machine. The agricultural film prepared by the invention has low hygroscopicity, high light transmittance, good processing performance, and excellent rigidity, heat resistance, flexibility, impact resistance and light conversion effect.
Owner:QINGZHOU YIRUN AGRI FILM FACTORY

Polyurethane acrylate for UV light-curing adhesive and preparation method and application thereof

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.
Owner:SHANDONG INOV POLYURETHANE

Perylene diimide-based aqueous ammonium ion battery electrode material, and preparation method and application thereof

The invention belongs to the technical field of energy storage materials, and particularly relates to an aqueous ammonium ion battery electrode material based on perylene diimide, a preparation method and application. Firstly, a perylene diimide compound and a preparation method are provided, the material is stable, the material is rich in carbonyl structures, and enol type conversion can be carried out in the charging and discharging process to combine / release ammonium ions to complete charge storage; the invention also provides a water-based battery prepared from the perylene diimide compound and a preparation method, and the water-based battery has reversible specific capacity of 190.62 mAh / g in 1M (NH4) 2SO4 solution and current density of 1A / g, and shows excellent rate capability. After 1000 cycles of continuous charging and discharging in a 1M (NH4) 2SO4 solution and at the current density of 10A / g, the lithium ion battery still has the specific capacity of 101.67 mAh / g, and the lithium ion battery is simple in preparation process, low in cost and wide in market application prospect.
Owner:LANZHOU UNIV

Bottle cap injection mold structure

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.
Owner:SHANTOU HONGCHENG DONGSHENG KITCHEN EQUIPMENT CO LTD +1

Integrated brake arm

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.
Owner:SHANGHAI NEW POWER AUTOMOTIVE TECH CO LTD

Preparation method of 4-dimethylaminopyridine and catalyst of 4-dimethylaminopyridine

InactiveCN119118916A
The invention provides a preparation method of 4-dimethylaminopyridine and a catalyst of 4-dimethylaminopyridine, and belongs to the technical field of organic chemistry. Comprising the following steps: (1) adding a catalyst into pyridine, heating, adding chlorine water, carrying out heat preservation reaction, adjusting the pH value of the solution by hydrochloric acid, separating an organic phase, carrying out reduced pressure distillation, and collecting distillate at 140-150 DEG C to obtain 4-chloropyridine; and (2) reacting 4-chloropyridine with dimethylacetamide, adding alkali liquor into the product to adjust the pH value of the solution, extracting with diethyl ether, concentrating, recrystallizing with ethyl acetate, filtering, washing and drying to obtain the 4-dimethylaminopyridine. The preparation method disclosed by the invention is simple, mild in condition, controllable and safe, the prepared 4-dimethylaminopyridine is relatively high in purity, the yield is also obviously improved, and the preparation method has a wide application prospect.
Owner:HUNAN SPARK SCI CO LTD

Flaky alumina and preparation method thereof

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.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

YOLO v3 post-processing hardware acceleration method based on table look-up method

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.
Owner:BEIJING AEROSPACE AUTOMATIC CONTROL RES INST

A method for preparing chemically recyclable polyaldehyde ester, its product, and the chemical recycling method.

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.
Owner:ZHEJIANG UNIV

Sodium methoxide integrated production system

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.
Owner:ANHUI JINBANG MEDICINE CHEM CO LTD

Fuel supply system of generator

The utility model discloses a fuel supply system of a generator, which is arranged on an engine of the generator, is positioned in the generator and comprises an oil-gas change-over switch, an oil pipe and a gas pipe, and the oil pipe and the gas pipe are connected with the engine through the oil-gas change-over switch; wherein the oil pipe is connected with an external oil pump, the gas pipe is connected with an external gas pipe, and the external oil pump and the external gas pipe are arranged outside a shell of the generator. According to the utility model, the arrangement of an oil tank or gas storage equipment on the generator is omitted, the weight of the generator can be reduced, the size of the generator can be reduced, the miniaturization of the generator is realized, the application range of the generator can be expanded, and the applicability is strong.
Owner:CHONGQING ZONGSHEN GENERAL POWER MACHINE

Lightweight analysis device for battery power consumption and lightweight log generation device

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.
Owner:BEIJING XUEDIRUANJIAN DEVELOPMENT CO LTD

Phased array synthetic jet microactuator device

PendingCN122602864AChange the mode of vertical air outlet onlyImprove cooling effect
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.
Owner:TIANJIN UNIV

Preparation method of multi-layer core-shell structure composite filling microspheres, product and application

PendingCN121846370Ahigh activityPrecisely stimulate proliferationPharmaceutical delivery mechanismProsthesisMicrosphereCollagenan
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.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH

Conductive polypropylene composite material and method for producing the same

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.
Owner:XIAMEN ZHONGCHENYUAN TECH CO LTD +1

High-altitude ETFE copolymer and its controllable polymerization method and application

ActiveCN121405840BAlternation is stablehigh melting pointTetrafluoroethylenePolymer science
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.
Owner:SHANDONG XUBEI NEW MATERIAL CO LTD

Yarn pulling mechanism for glass fiber reinforced plastic grating production

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.
Owner:LUZHOU CHUANXI FRP CO LTD

Folding chair

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.
Owner:TONGXIANG YIYANG FURNITURE CO LTD

Dual-substrate circularly polarized reconfigurable omnidirectional antenna based on pin diode control

PendingCN122512154AImprove bandwidth performanceThe installation location is clearOmnidirectional antennaGround plane
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.
Owner:NANJING UNIV OF SCI & TECH

Composite graphite negative electrode material and preparation method and application thereof

The invention relates to a composite graphite negative electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: sequentially carrying out coarse crushing and fine crushing on high-sulfur coke to obtain crushed high-sulfur coke, a mixed binder, crystalline flake graphite and crushed high-sulfur coke, and sequentially carrying out granulation, graphitization treatment and post-treatment to obtain the composite graphite negative electrode material. The composite graphite negative electrode material is obtained; the sulfur content of the high-sulfur coke is 3-5wt%. The sulfur of the high-sulfur coke overflows in a gas form in the graphitization treatment process, so that the gap of the inner core graphite is enlarged, and the lithium ion embedding rate of the inner core graphite is improved; in the graphitization treatment process of the crystalline flake graphite, the surface defects are reduced, more lithium embedding sites can be provided, the capacity and the first efficiency are improved, and the compaction density of the negative electrode material is improved. The prepared composite graphite negative electrode material is excellent in rate capability, and the capacity, the first efficiency and the compaction density of the high-sulfur petroleum coke artificial graphite can be remarkably improved.
Owner:XIE XIN CHU NENG KE JI (SU ZHOU) YOU XIAN GONG SI

Squid product production and filling device

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.
Owner:WENZHOU HAIYULIAN FOOD CO LTD

A method and system for restoring a thangka image

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.
Owner:TIBET EVEREST DIGITAL TECH CULTURE CO LTD