301 results about "Plasma technology" patented technology

The invention belongs to the technical field of solid-state battery materials, and discloses an inorganic solid-state electrolyte lanthanum lithium zirconate surface interface non-metallic element doped modified material using a plasma technology and a preparation method and application thereof, which can reduce the interface impedance of an electrolyte and improve the electrochemical performance of the electrolyte. By using the plasma technology, impurities such as lithium carbonate and the like on the surface of the inorganic solid electrolyte lanthanum lithium zirconate can be etched, a lithium-loving protective layer can be generated in situ on a surface interface, and the air stability of the electrolyte block is improved. According to the invention, multi-aspect modification can be realized by combining a plasma technology with a plurality of non-metallic element excitation sources, corresponding gain protection layers can be formed according to different requirements, and performance exertion of the battery in different fields is facilitated. When the inorganic solid electrolyte lanthanum lithium zirconate modified material obtained by the method disclosed by the invention is in contact with lithium metal to form a battery, the inorganic solid electrolyte lanthanum lithium zirconate modified material shows relatively low interface contact resistance and excellent cycling stability, and has a good application value.

The invention relates to the technical field of rare earth metal electrolysis cathode protection coatings, in particular to a high-temperature-corrosion-resistant yttrium-stabilized zirconia gradient coating on the surface of a tungsten cathode. A metallurgically bonded strong bonding bottom layer is constructed on a tungsten substrate through surface pretreatment and reactive sintering, then an atmosphere plasma technology is adopted to spray a creep-resistant gradient layer with continuous components to buffer thermal stress, and finally a sol-gel technology is utilized to construct an extremely compact corrosion-resistant surface layer in a superposition mode. The high-temperature-corrosion-resistant yttrium-stabilized zirconia gradient coating is constructed through a multi-scale and multi-mechanism synergistic effect, the problems that a tungsten cathode coating is insufficient in binding force and poor in thermal shock resistance are fundamentally solved, molten salt permeation can be blocked, and the service life of a tungsten cathode in a severe environment is remarkably prolonged.

The invention belongs to the technical field of halide solid-state electrolyte, and relates to a high-conductivity and high-lithium-stability modified halide solid-state electrolyte material constructed by solid source plasma, and a preparation method and application of the high-conductivity and high-lithium-stability modified halide solid-state electrolyte material. According to the preparation method, a halide solid electrolyte is taken as a matrix, halogenated ammonium salt is taken as a solid source, and the halide solid electrolyte is subjected to synergistic doping modification of elements such as nitrogen, fluorine / chlorine / bromine and the like by utilizing a plasma technology, so that the modified halide solid electrolyte material is obtained. The modified halide solid electrolyte material shows excellent conductivity and lithium-lithium symmetrical battery performance, and has a wide market application prospect. Meanwhile, the preparation method provided by the invention is simple, rapid, efficient and convenient, is easy to control, and contributes to promoting the development and application of the high-performance halide solid electrolyte material.

The invention relates to the technical field of plasmas, in particular to a remote plasma source working point judgment method, device and equipment and a medium. The mass spectrum dissociation rate is calculated according to the first mass spectrum and the second mass spectrum; calculating a spectral dissociation rate according to the spectrogram; performing correction calculation on the mass spectrum dissociation rate and the spectral dissociation rate based on the initial prior Gaussian distribution model to obtain a corrected dissociation rate; when the corrected dissociation rate meets the dissociation rate required by the process, calculating an actual reaction rate according to the spectrogram and a preset emission peak height threshold value; when the actual reaction rate is equal to the reaction rate threshold value, a feedback signal reaching the process working point is generated; mass spectrum data and spectral data are mutually verified in real time, the contradiction between single-mode detection precision and process compatibility is overcome, errors such as signal attenuation, interference and peak overlapping are reduced, the reliability of dissociation rate detection is remarkably improved, meanwhile, a working point is judged in combination with correction of the dissociation rate and the actual reaction rate, stability control is enhanced, and the process precision and the yield are improved.

The invention provides an unmanned aerial vehicle based on the plasma technology and a control method thereof, and relates to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle comprises a fuselage, a power system, a control system and a plasma generation device, and the plasma generation device is installed on the surface or a specific position of the unmanned aerial vehicle. The aerodynamic performance, the stealth performance and the anti-interference capability of the unmanned aerial vehicle are improved by generating the plasma layer, the plasma layer can reduce air resistance and improve flight efficiency, meanwhile, the stealth effect is achieved by adjusting plasma parameters, the radar reflection area is reduced, and the anti-interference capability of the unmanned aerial vehicle is improved. The invention further provides an unmanned aerial vehicle control method based on the plasma technology, accurate regulation and control of the plasma layer are achieved through an intelligent algorithm, stability and high efficiency of the unmanned aerial vehicle under different flight conditions are ensured, and the technology can be widely applied to the fields of military reconnaissance, disaster monitoring, logistics transportation and the like and has wide application prospects. The method has remarkable technical advantages and application prospects.

The invention discloses a method for performing tar steam reforming by coupling low-temperature plasma with a nickel-loaded hydrogen type molecular sieve composite catalyst. The method comprises the following steps: preparing the nickel-loaded hydrogen type molecular sieve composite catalyst; the mass of Ni in the nickel-loaded hydrogen type molecular sieve composite catalyst accounts for 5-30% of the mass of the catalyst; introducing tar and water vapor into a dielectric barrier discharge plasma reactor filled with the nickel-loaded hydrogen type molecular sieve composite catalyst; starting the dielectric barrier discharge plasma reactor, and carrying out a tar steam reforming reaction; wherein the temperature of the tar steam reforming reaction is 150-525 DEG C, and the power of the tar steam reforming reaction is 30-90 W. The catalyst disclosed by the invention is coupled with a low-temperature plasma technology, so that good tar reforming performance, target product selectivity and system stability are realized.

The utility model discloses a plasma generating device and electrical equipment, and relates to the plasma technology field, the plasma generating device comprises a dielectric layer, a first electrode and a second electrode, the dielectric layer is provided with a first plane and a second plane which are arranged back to back; at least part of the first electrode is arranged to be a first extension section, and the first extension section is arranged on the first plane or spaced from the first plane; at least part of the second electrode is arranged to be a second extending section, the second extending section is provided with a plane attached to the second plane or arranged opposite to the second plane, and the first extending section and the second extending section are arranged in a separated mode through the dielectric layer. According to the technical scheme, the generation position of the plasma in the plasma generation device can be controlled.

The utility model discloses a plasma generating device and electrical equipment, and relates to the plasma technology field, the plasma generating device comprises a dielectric medium structure, a first electrode and a second electrode, the dielectric medium structure wraps the second electrode, a part of the dielectric medium structure is arranged to be a plane dielectric layer, and the first electrode wraps the second electrode. The first electrode is arranged on the side, away from the second electrode, of the plane dielectric layer. According to the technical scheme, the plasma generating device can be prevented from being too large in size under the condition that the plasma generating device is safely used.

The invention relates to the technical field of plasma, and discloses an electrode fault recognition system and method and a machine readable storage medium. The system comprises: an auxiliary electrode; the electrode displacement device is used for moving the auxiliary electrode to a preset position which is a preset distance away from the to-be-identified electrode, and the auxiliary electrode at the preset position and the to-be-identified electrode form a to-be-identified electrode pair; the voltage detection device is used for detecting the initial discharge voltage of the to-be-identified electrode pair in a preset detection environment when the to-be-identified electrode is in a detection state and the auxiliary electrode moves to a preset position, and the detection state is a state that the to-be-identified electrode discharges in response to the initial discharge voltage; and the control device is used for determining whether the to-be-identified electrode has a fault or not according to the initial discharge voltage and the safety threshold interval. According to the invention, fault detection of any electrode can be realized without dismounting the plasma reactor, the judgment result is more accurate and reliable, and the period and cost of manual maintenance are reduced.

The invention belongs to the technical field of microwave plasmas, and particularly relates to a magnetized atmospheric pressure pulse microwave plasma jet discharger. The discharger is reasonable in design, microwave energy is fed into the discharge chamber through the SMA interface, high electric field intensity is formed at the tip of the hollow needle electrode, and fed working gas is disrupted and discharged; a magnet exciting coil outside the quartz tube generates an axial magnetic field inside the quartz tube through direct current, electrons do spiral cycloid motion in an electromagnetic field, and electron cyclotron resonance can be achieved under the field. Through magnetic field constraint, high-energy electrons are constrained in a core area, a motion path is prolonged, effective collision times are increased, gas dissociation efficiency and ionization degree are improved, and collision loss of the electrons and a wall surface is reduced; the plasma jet performance is improved; the device works in an atmospheric pressure environment, does not need a vacuum system, reduces equipment cost and maintenance difficulty, reduces electrode sputtering and cavity corrosion, and prolongs the service life of core components.

The invention discloses a single-walled carbon nanotube and a preparation method and device thereof, and belongs to the technical field of nano materials. The device comprises an inert gas cylinder, a carrier gas injection pipeline, a gas flow controller, a cavity, a positive electrode bar, a negative electrode bar, two graphite felt electrodes woven with carbon fibers, a stainless steel screen, a filter membrane, a graphite table and a tubular furnace. When the electrode starts to discharge and the temperature of the high-temperature plasma gasification area reaches the gasification temperature of the solid carbon source and the solid catalyst, the solid carbon source and the catalyst start to be gasified, gasified reactants enter the sample growth area along with the inert gas flow to grow, and the grown single-walled carbon nanotubes reach the sample deposition area along with the gas flow. The device disclosed by the invention can generate uniform, stable and high-capacity ultrahigh-temperature plasma under normal pressure and relatively low voltage and current, and the simple and practical plasma technology is low in energy consumption, green and environment-friendly, can be used for macro preparation and is beneficial to overcoming the challenge of high-temperature synthesis.

The invention relates to the technical field of waste gas treatment, and particularly discloses a purification treatment device suitable for chemical waste gas stink and a treatment method thereof.The purification treatment device comprises an acid pickling tower, an alkaline washing tower, a heat exchange washing tower, a demister, pulse plasma equipment and a water washing tower which are sequentially communicated; acid or alkaline malodorous components in waste gas are removed through an acid-base neutralization reaction of the acid washing tower and the alkaline washing tower, soluble malodorous gas is further removed by spraying a washing solution in the heat exchange washing tower, liquid drops in the waste gas are removed by the demister, and the liquid drops are prevented from carrying pollutants and entering pulse plasma equipment to influence the plasma treatment effect. The pulsed plasma technology intensified decomposition has efficient treatment capacity on refractory malodorous substances, the overall treatment efficiency is remarkably improved, residual pollutants in the waste gas are further removed by spraying clear water in the water scrubber, tail end purification is guaranteed, standard emission of the waste gas is guaranteed, and the malodorous treatment efficiency of the chemical waste gas is improved.

The invention relates to the technical field of printing and packaging, and discloses a printing ink spraying process for a color printing carton, which comprises the following steps: step 1, carton surface pretreatment: carrying out cleaning and micropore treatment on the carton surface, removing surface impurities by adopting an ultrasonic cleaning technology, and drying the carton surface; a micron-sized concave-convex structure is formed on the surface of the carton by using a low-temperature plasma technology, and the surface roughness range is Ra 1-3 microns, so that the adhesive force between the ink and the surface of the carton is enhanced; the basic ink and a functional additive are mixed in proportion according to the design pattern requirement, and the functional additive comprises nano zinc oxide particles with the mass fraction of 0.5%-2% and is used for improving the weather resistance and the antibacterial performance of the ink. The surface of the carton is subjected to special pretreatment, the adhesive force of printing ink is remarkably improved, the durability and stability of printed patterns are enhanced, high-precision pattern spraying is achieved through the intelligent image recognition and piezoelectric ink jet technology, the complex design requirement is met, and the printing quality is improved.

The invention discloses a preparation method for regenerating plastic particles by using recycled plastics, and relates to the technical field of plastic recycling, the preparation method comprises the following specific steps: S100, sorting and cleaning: removing large-volume impurities in mixed plastics through manual sorting, separating non-target plastic materials through mechanical sorting equipment, and carrying out secondary cleaning on the non-target plastic materials; putting the sorted plastic into a cleaning tank containing a detergent and clear water, stirring or spraying and cleaning, and then centrifugally dewatering to dry the surface of the plastic; according to the method, low-temperature plasma treatment and scientific separation parameter determination are combined, the preparation efficiency and purity of the regenerated plastic particles are remarkably improved, in the pretreatment stage, the low-temperature plasma technology is adopted to be matched with inert gas protection, pollutants on the surface of the plastic are effectively removed, and the interface of the plastic is activated; meanwhile, the problem of material degradation caused by traditional high-temperature treatment is avoided, energy consumption is reduced, and a more stable material basis is provided for subsequent separation.

The invention provides a method and device for reducing coating defects of a disc-type ceramic membrane, and the method comprises the following steps: positively mounting a clamp on a spraying station, enabling the ceramic membrane to dynamically rotate, and cleaning and activating the front surface of the ceramic membrane by adopting a low-temperature plasma technology; carrying out negative pressure suction on the ceramic membrane while the ceramic membrane is dynamically rotated, and spraying a membrane preparation liquid on the front surface of the ceramic membrane by adopting ultrasonic atomization; and dynamically rotating the ceramic membrane, and performing negative pressure suction on the ceramic membrane, so that the circular arc part of the ceramic membrane is dynamically dip-coated in the membrane preparation liquid. According to the method, dynamic rotation of the ceramic membrane, negative pressure and ultrasonic spraying are cooperated, ultrasonic atomized liquid drops are sucked into a micropore structure or surface gaps when making contact with the surface of the ceramic membrane, pinholes or defects of the membrane layer are avoided, and the uniform, dense and defect-free membrane layer is formed; and non-contact with the ceramic membrane can be realized, and the coating defect caused by improper contact before the membrane layer is dried is effectively prevented.

The invention discloses a hard-carbon-doped negative electrode material and a preparation method and application thereof, and the preparation method of the hard-carbon-doped negative electrode material comprises the following steps: S1, carrying out heat treatment on a nitrogen-containing precursor to obtain graphite-phase carbon nitride; grinding into powder, mixing with acid liquor, ultrasonically stirring, and washing to be neutral; drying and adding water to obtain a suspension; s2, mixing and reacting a phenolic compound and an aldehyde compound with an alkaline aqueous solution, then uniformly mixing with the suspension, and carrying out spray drying to obtain dry powder; s3, NaF is placed in a high-frequency plasma reaction bin to form steam, and NaF is deposited on the surface of the dry powder; and S4, in the atmosphere of protective gas, carrying out heat treatment on the dry powder deposited with the NaF, and then carrying out carbon coating. According to the hard carbon-doped negative electrode material provided by the invention, NaF forms steam through a plasma technology to uniformly coat the surface and pores of hard carbon, and then carbon coating is performed through vapor deposition, so that the binding force of NaF is increased, and the specific surface area of the hard carbon material is reduced, and therefore, the hard carbon-doped negative electrode material has high first efficiency and long cycle performance.

The invention discloses a silicon-carbon composite negative electrode material and a preparation method and application thereof, the silicon-carbon composite negative electrode material comprises porous carbon and silicon particles attached to the porous carbon, and an attachment method between the porous carbon and the silicon particles comprises chemical bond attachment. The lithium battery prepared from the silicon-carbon composite negative electrode material disclosed by the invention has excellent first effect, specific capacity and cycle capacity retention rate. And the preparation method of the silicon-carbon composite negative electrode material has the characteristics of one-step double effects, greenness and high efficiency. Besides, the plasma technology is utilized to excite the medium gas, the two key steps of pore forming and functionalization are completed in one step through the synergistic effect of different medium gases, compared with a traditional chemical activation method, use of strong acid and strong base and the tedious cleaning process are avoided, no waste water is discharged, and the method is more environmentally friendly and saves more energy.

The invention belongs to the technical field of sodium ion battery positive electrode materials, and relates to a gas-liquid mixture source plasma constructed high-capacity interface dual-modified sodium ferric pyrophosphate composite positive electrode material and a preparation method and application thereof. The preparation method comprises the following steps: taking sodium ferric phosphate pyrophosphate as a matrix, taking sulfur hexafluoride as a gas source, introducing a liquid source, and carrying out fluorine and sulfur element synergistic doping modification and surface carbon layer coating on sodium ferric phosphate pyrophosphate by utilizing a plasma technology to obtain the sodium ferric phosphate pyrophosphate composite positive electrode material. The composite positive electrode material shows excellent sodium storage cycle stability and rate capability, and has a wide market application prospect. Meanwhile, the preparation method provided by the invention is simple, rapid, efficient and convenient, is easy to control, and contributes to promoting the development and application of the high-performance sodium-ion battery positive electrode material.

The invention discloses a plasma generator and a traditional Chinese medicine disinsection device thereof, and belongs to the technical field of plasma. The plasma generator comprises a base, a first electrode, a second electrode and a heat preservation pipe. The core of the device is that high-concentration mixed gas is ionized into plasma'kindling 'through discharge of the central electrode and the tubular electrode, and the'kindling' ignites extremely rarefied mixed gas, so that stable and low-consumption combustion is realized. The disinsection device integrates the generator, an air path system and a transmission and air injection device, and the high-temperature air flow generated by the generator is used for carrying out double-sided uniform injection on the medicinal materials subjected to transmission and turn-over treatment, so that worm eggs are effectively killed at instantaneous high temperature, and no medicine residues exist. The device has the advantages of high efficiency, safety and energy conservation.

This invention relates to a pre-fabricated tritium target based on a polycrystalline film and its manufacturing method, belonging to the field of plasma technology. The pre-fabricated tritium target includes an oxygen-free copper target substrate, a first zirconium film, a high-entropy ceramic tritium-blocking layer, and a second zirconium film sequentially deposited on its surface. The manufacturing method includes: pre-treating the oxygen-free copper target substrate; sequentially depositing multiple layers of films using a magnetron sputtering process to form a polycrystalline film layer; purging the oxygen-free copper target substrate with the polycrystalline film layer with tritium; and bonding the oxygen-free copper target substrate to an oxygen-free copper target holder. The pre-fabricated tritium target based on a polycrystalline film of this invention solves the problem of balancing heat dissipation and tritium blocking performance in traditional processes, achieving a balance between heat dissipation and tritium blocking capabilities. This allows the prepared pre-fabricated tritium target to be reused, improving the utilization rate of the pre-fabricated tritium target and reducing the cost of using neutron tubes.

The invention provides a microwave plasma preparation method and application of a manganese-based potassium ion battery positive electrode material, and the method comprises the following steps: S1, dissolving a dispersant in deionized water and ethanol to obtain a mixed solvent; s2, ball-milling and mixing a potassium source, a manganese source and other transition metal sources in the solvent to form uniform slurry; and S3, putting the precursor prepared by spray drying into a microwave plasma sintering furnace, and quickly heating and calcining to obtain the manganese-based potassium ion battery positive electrode material. Spray drying is adopted to remove a solvent, the morphology is controlled, and solvent residues are avoided; calcining is rapidly completed through a microwave plasma technology, the sintering time is shortened to the minute level, the productivity is improved, and the energy consumption is reduced; ball milling, spray drying and microwave plasma sintering are easy to increase the yield, and a new path is provided for large-scale production.

The invention relates to the field of low-temperature plasma catalyst preparation, and discloses a composite catalyst as well as a preparation method and application thereof. The composite catalyst comprises a carrier as well as manganese oxide, an auxiliary active component and a heat stabilizer which are loaded on the carrier, the auxiliary active component is transition metal oxide, and transition metal is selected from at least one of Cu, Co and Ce; the carrier is selected from one or two of alpha-Al2O3, gamma-Al2O3, eta-Al2O3, a high-silicon Y type molecular sieve, a ZSM-5 type molecular sieve and an MCM-41 type molecular sieve; and the heat stabilizer is selected from one or more than two of La oxide, Nd oxide and Pr oxide. The composite catalyst is coupled with a low-temperature plasma technology, dual control over VOCs and by-products NOx and ozone can be achieved, the degradation efficiency of the VOCs can be improved, meanwhile, emission of the by-products can be reduced, and green treatment of the VOCs is achieved.

The invention relates to the technical field of plasma, in particular to a plasma cleaning device capable of being spliced. The plasma generator comprises a main cavity, side plates, an electrode assembly and a high-voltage electric connector, the side plates are connected to the two sides of the main cavity in a sealed mode, the main cavity is formed by splicing a plurality of cavity modules, each cavity module is provided with a discharge area, an exhaust area, a plasma air outlet, an exhaust inlet and a splicing installation position, the discharge areas of the multiple cavity modules are communicated, and the exhaust areas of the multiple cavity modules are communicated with the splicing installation position. The exhaust areas of the plurality of cavity modules are communicated, the discharge areas are isolated from the exhaust areas, the plasma gas outlets are communicated with the discharge areas, the exhaust inlets are communicated with the exhaust areas, an electrode assembly is installed in the discharge area of each cavity module, and the high-voltage electric connectors are connected with the electrode assemblies. And the side plates and the cavity modules are positioned, butted and fixed through the splicing mounting positions. The cleaning heads with different lengths are composed of a modular product and can be spliced and customized according to customer requirements, and the overall transformation cost and the manufacturing cost can be reduced.

The invention discloses a method for reactive sputtering of a metal nitride diffusion coating based on a plasma technology, and belongs to the field of metal surface treatment. The method comprises the following steps: (1) placing a metal substrate material on a sample table, and placing a hollow conductive mesh enclosure around the sample table as an active screen cathode; (2) forming a multi-layer hollow cathode system by using a hollow target material composed of target metal elements, and placing the multi-layer hollow cathode system on a hollow conductive mesh enclosure; and (3) the ionization atmosphere serves as the reaction atmosphere, a chemical diffusion coating is formed through gaseous nitrogen source reactive sputtering, and the target element forms the metal nitride diffusion coating on the surface of the base body through ionization and reactive sputtering. According to the method, the utilization rate of sputtering particles is increased through the hollow cathode effect, diffusion and permeation of the nitrogen element are promoted, the reaction sputtering activity is improved by adding a gas nitrogen source, the reaction with a matrix is facilitated, a more compact and uniform TiN coating is generated, the metal nitride diffusion coating is successfully prepared on the surface of the substrate, and the service life of the substrate is prolonged. And excellent high bearing capacity, corrosion resistance and wear resistance are achieved.

The invention discloses a low-temperature plasma modified efficient hydrogen evolution catalyst. The method comprises the following steps: preparing a nano core-shell structure catalyst with uniform size through liquid-phase synthesis and layer-by-layer self-assembly, and introducing vacancies, defects and other unsaturated active sites on the surface of the nano core-shell structure catalyst; and then nitrogen and the like are used as a reaction atmosphere of a plasma chamber, and the surface of the catalyst is treated through a low-temperature plasma technology for catalyst performance regulation and control. The method has the advantages of simple process, low energy consumption, no need of adding extra chemical reagents, environmental friendliness and the like, and has a good application prospect. The preparation and regulation method of the electrocatalyst can be suitable for application of an electrocatalytic efficient hydrogen evolution catalyst. The material regulated and controlled by the plasma has higher current density and lower overpotential in hydrogen evolution reaction, and shows more excellent electrocatalytic activity and stability.

The utility model relates to the technical field of microwave oven furnace pipe manufacturing, and discloses robot equipment for plasma surface activation treatment, which comprises a base, a cleaning and gluing component is arranged above the base, and a disc is arranged on the left side of the upper portion of the base. Firstly, a furnace pipe is placed on a disc, a U-shaped plate, a rack rod, a connecting plate, a second telescopic rod, a clamping plate, a third motor and a third gear are used in cooperation, then the furnace pipe is fixed, the furnace pipe can be stably placed for gluing work conveniently, and then through cooperation of an angle adjusting mechanism, a cleaning and gluing assembly and a lifting mechanism, the furnace pipe can be cleaned and glued conveniently. The furnace pipe can be conveniently adjusted to a proper angle and height according to gluing requirements, better gluing use is facilitated, and the bonding force of the metal surface is increased by adopting a plasma technology and furnace pipe surface activation treatment, so that the bonding force between glass ceramics and the surface of the furnace pipe after glue dripping is ensured.

The invention provides an anti-ion sputtering sealing structure, which relates to the field of plasma technology application and comprises a metal cover plate, a vacuum cavity, a sealing ring and a ceramic ring. And three grooves are formed in the metal cover plate and are respectively used for placing and limiting the sealing ring, the ceramic ring and the vacuum cavity. The sealing ring is used for connecting the metal cover plate and the vacuum cavity in a sealed mode, the ceramic ring is placed between the plasma and the sealing ring, and the energy of the plasma reaching the sealing ring is effectively attenuated by increasing the refraction path of the plasma at the connecting gap. According to the invention, the ablation risk of the plasma to the sealing ring is reduced, and plasma pollution and vacuum rupture caused by damage of the sealing ring are prevented, so that the long-term stable operation of the ion source system is ensured.

This invention discloses a portable low-temperature plasma device based on a Laval nozzle structure and its application, belonging to the field of plasma technology application technology. Specifically, it includes (1) the construction of the device; and (2) the use of the device for fungal eradication treatment and transdermal drug delivery enhancement treatment. The beneficial effects achieved by this invention are as follows: This invention is the first to apply the Laval nozzle structure to a portable low-temperature plasma device. The results show that the device can effectively improve the plasma jet performance and active particle content, significantly improve the treatment effect of fungal infections of the skin and nails and the transdermal drug penetration efficiency, while solving the problems of large size, reliance on external power supply, and complex operation of traditional plasma devices. Therefore, using this invention for the treatment of fungal infections of the skin and nails and for enhanced transdermal drug delivery has advantages such as ease of operation, high safety, non-invasiveness, and high efficiency, and thus has potential application prospects in the field of skin disease treatment and transdermal drug delivery.

The invention discloses a medical-grade ultralow-adsorption cycloolefin copolymer (COC) material and a preparation method thereof. According to the material, COC serves as matrix resin, surface-modified nano silicon dioxide is loaded through in-situ polymerization, and a perfluoroalkyl siloxane (PFAS) coating is grafted on the surface of the material through a normal-pressure plasma technology. The preparation method comprises the following steps: surface modification of nano-SiO2, in-situ polymerization of COC, loading of nano-SiO2, and continuous grafting of PFAS with normal-pressure plasma. The adsorption rate of the material is as low as 3.2 * 10 <-7 > copy / mu L (annual loss rate); the temperature from-196 DEG C (liquid nitrogen) to 121 DEG C (autoclaved sterilization) can bear 16,000 g centrifugation without rupture; by means of ethylene oxide sterilization or gamma ray irradiation, it is ensured that the product is free of endotoxin (1t, 0.001 EU / mL), free of DNA enzyme / RNA enzyme residues and other excellent performance, the problems of high adsorption rate and low-temperature brittleness of a traditional COC material in biological sample storage are effectively solved, and the method is suitable for large-scale production of high-end medical cryopreservation tubes and other products.

The utility model relates to the technical field of formaldehyde purification, and particularly discloses a multifunctional portable formaldehyde purification module which comprises an environment detection module used for monitoring the temperature, humidity and formaldehyde concentration of an air environment in real time and outputting monitored data; the plasma generation module is used for degrading formaldehyde in the surrounding environment; the display module is used for receiving the data output by the environment detection module and displaying the temperature data, the humidity data and the formaldehyde concentration data in real time; and the main control board circuit is electrically connected with the environment detection module, the plasma generation module and the display module and controls the environment detection module, the plasma generation module and the display module. According to the multifunctional portable formaldehyde purification module disclosed by the utility model, when formaldehyde is monitored to exceed the standard, the formaldehyde is degraded more effectively through a plasma technology.