572 results about "Low temperature plasma" patented technology

The invention discloses a process for synthesizing ammonia by coupling low-temperature plasma with electro-catalysis in the field of clean energy and green chemical industry, which comprises the following specific steps: mixing air and water vapor, feeding the mixture into a dielectric barrier discharge reactor, filling the reactor with a multi-stage heterojunction gradient doped carbon coated catalyst, generating active gas containing NOx under pulse high voltage, and condensing and then entering an electrocatalytic reduction unit. And an electro-catalysis product enters a photo-thermal separation module integrated with a Janus type photo-thermal electrode, the temperature of the electrode is locally increased under visible light irradiation, NH3 desorption is promoted, and finally high-purity ammonia is obtained through polyimide membrane separation. The multistage heterojunction gradient-doped carbon-coated catalyst adopted in the process is prepared through multiple steps and contains gradient-doped boron, sulfur and Au nanoparticles on the surface, NOx adsorption, electron transport and sintering resistance are synergistically improved, and efficient ammonia synthesis under mild conditions is achieved.

The invention discloses a method for preparing ultra-high-purity quartz by multi-stage synergistic purification of quartz ore, and belongs to the technical field of ultra-high-purity quartz preparation. According to the method, natural quartz ore is used as a raw material, mineral impurities, lattice impurities and inclusions in quartz are deeply removed through multi-stage synergistic processes such as low-temperature plasma activation, biological leaching, supercritical CO2-assisted acid leaching, microwave-assisted chloridizing roasting and pulsed electric field enhanced acid leaching, and finally a high-purity quartz product with the SiO2 purity larger than or equal to 99.998% (4N8 grade) is obtained. According to the invention, a low-temperature plasma activation technology, microbial metallurgy, supercritical fluid extraction and a pulsed electric field strengthening technology are organically combined, so that the energy efficiency bottleneck and environmental protection limitation of a traditional high-purity quartz preparation process are broken through; the obtained quartz sand product can reach the standards of high-purity quartz sand for semiconductor quartz glass and high-purity quartz sand for photovoltaic quartz crucibles.

The invention belongs to the technical field of medical treatment, and discloses a blood product virus inactivation system based on a synergistic effect of nano-catalysis photochemical inactivation and low-temperature plasma, the system comprises: a nano-photocatalysis inactivation module adopting titanium dioxide TiO2 and graphite phase carbon nitride g-C3N4 nano-materials as photocatalysts; the low-temperature plasma inactivation module adopts a low-temperature plasma generator to generate plasma cloud above the blood product and release active particles; the dynamic fluid stirring module is used for enabling the blood product to uniformly receive photocatalysis and plasma inactivation effects through a microfluid mixing technology so as to ensure the uniformity of virus inactivation; the sensing monitoring and intelligent feedback module is used for monitoring the residual quantity of viral nucleic acid and the activity of protein in the blood in real time by adopting a spectrum sensor and a biochemical sensor. The method can be widely applied to the fields of clinical blood transfusion, blood product manufacturing, blood disease treatment and the like, promotes the progress of a blood safety guarantee technology, reduces the virus infection risk and improves the patient safety.

The invention provides a super-hydrophobic passion fruit peel carbon aerogel VOCs adsorbent based on low-temperature plasma synergistic nitrogen doping modification and a preparation method thereof, and relates to the technical field of VOCs adsorbents. The super-hydrophobic passion fruit peel carbon aerogel VOCs adsorbent based on low-temperature plasma synergistic nitrogen doping modification is prepared by crushing passion fruit peel, mixing the crushed passion fruit peel with a nitrogen-containing compound to form gel, performing low-temperature plasma modification, performing freeze drying, performing high-temperature carbonization, and performing water washing and drying. The adsorbent is spherical, and the water contact angle is 115.8 degrees to 152.4 degrees. The adsorbent disclosed by the invention has the advantages of super hydrophobicity, high specific surface area, developed microporous structure, excellent VOCs adsorption performance, broad-spectrum adsorption capacity, good reusability and mechanical strength, the preparation method is simple in process, green and environment-friendly, low in cost and good in universality, a new technical scheme is provided for VOCs treatment in a high-humidity environment, and the adsorbent has a good application prospect.

The invention relates to the technical field of coating preparation, in particular to a spraying process of a compact yttrium oxide coating, which comprises the steps of pretreatment, powder activation, matrix surface modification, meltallizing spraying, cooling curing, de-shielding treatment and post-cleaning. Yttrium oxide powder is activated through low-temperature plasma, sand blasting parameters and a high velocity oxy-fuel spraying process are optimized, the porosity of the coating is remarkably reduced to 1.5% or below, and the hardness is improved to 500 HV0.3. Internal stress is reduced in a sectional cooling mode, and balance of coating performance and economical efficiency is achieved in combination with a parameter optimization algorithm based on particle deposition dynamics. The preparation method can meet the requirement of the high-end semiconductor manufacturing field on a high-performance protective coating, and solves the problem of high porosity of a traditional process.

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 invention discloses a metallization coating method for a magnetic attraction jig, and relates to the technical field of atomic layer deposition of nano-coatings, and the metallization coating method comprises the following steps: cleaning the surface of a substrate by using an ultrasonic cleaning machine, transferring the cleaned substrate into low-temperature plasma equipment, and selecting argon to carry out plasma activation treatment; preparing a precursor solution, storing the precursor solution under the protection of inert gas, and mounting the substrate activated by the plasma into an ALD (Atomic Layer Deposition) clamp; aLD is started, reaction gas and circulation parameters of each circulation are set, the precursor solution is quantitatively conveyed to an ALD reaction chamber each time, and deposition operation is carried out; according to the method, the surface of the substrate is cleaned by using the ultrasonic cleaning machine, and argon is selected for plasma activation treatment, so that the strong binding force between the substrate and the plating layer is ensured, the stability and durability of the plating layer are improved, and the problem of insufficient adhesive force of the plating layer is solved.

The invention belongs to the technical field of molecular sieve synthesis, and discloses a ZSM-5 type molecular sieve as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, carrying out calcination treatment and low-temperature plasma treatment on rectorite to obtain modified rectorite; then adding the modified rectorite and a supplementary silicon source into water, sequentially adding butane-1, 4-bis (dodecyl dimethyl ammonium bromide) and hexadecyl trimethyl ammonium bromide, raising the temperature, adding a template agent, adjusting the pH value of the system, and quickly aging by microwave treatment to obtain a precursor; and finally, heating the precursor, carrying out hydrothermal crystallization reaction, washing, drying and grinding a product, and calcining to obtain the ZSM-5 type molecular sieve. The rectorite is used as all aluminum sources and part of silicon sources for molecular sieve synthesis, the aluminum activity and nucleation sites of the rectorite are improved through modification, then two surfactants are introduced, and microwave treatment is combined, so that silicon and aluminum species in a system are rapidly nucleated, and the efficient, economical and higher-performance ZSM-5 type molecular sieve is prepared.

The invention discloses an ejector pin anti-fatigue strengthening method based on multi-section variable-temperature treatment, and relates to the technical field of ejector pin anti-fatigue strengthening, and the ejector pin anti-fatigue strengthening method comprises the following steps: austenitizing high-temperature quenching: heating an ejector pin to an austenitizing temperature, and then carrying out zoned cooling on the ejector pin; medium-temperature tempering and thermal-state mechanical strengthening are conducted, specifically, the ejector pin is tempered at the medium-temperature tempering temperature, and thermal-state shot blasting or laser shock is conducted on the ejector pin in the heat preservation period or after heat preservation is completed; intermediate low-temperature plasma nitriding: carrying out plasma nitriding in a nitrogen-hydrogen gas environment; subzero treatment: placing the ejector pin in liquid nitrogen; and finally, low-temperature tempering and cold-state mechanical strengthening are conducted. Through multi-section temperature gradient treatment, phase change distribution control over different temperature sections is achieved, too high internal stress and brittleness generated by one-time quenching are avoided, sudden size change and hot cracks induced by phase change are prevented, a controllable surface-core hardness and toughness gradient is formed, the surface crack initiation tendency is reduced, and the surface quality is improved. And the consistency and controllability of anti-fatigue basic conditions are improved.

The invention relates to the technical field of material surface engineering, and discloses a plastic surface treatment process to solve the problems that in the prior art, a plastic surface coating is poor in adhesive force and single in function, and a traditional treatment method is not environmentally friendly. The process sequentially comprises the following steps: pre-treating a base material, and obtaining a clean and stress-free base material through ultrasonic cleaning and thermodynamic stress elimination; performing low-temperature plasma surface activation, performing physical bombardment and chemical modification on the plastic surface by utilizing plasma of specific process gas in a vacuum environment, introducing a large number of active functional groups, and remarkably improving the surface energy; and preparing and applying the functional nano coating, namely forming firm covalent bonds by using the coupling agent in a coating solution containing functional nano particles and a coupling agent and the anchor points, so that the chemical coupling of the functional coating and the plastic substrate is realized.

The invention relates to the technical field of brake discs, in particular to a carbon-ceramic brake disc with a composite functional layer and a preparation method of the carbon-ceramic brake disc. The problems that a brake disc is insufficient in strength and poor in ablation resistance are solved. The preparation method comprises the following steps: carrying out low-temperature plasma treatment and silicon dioxide sol impregnation on carbon fibers, and inserting a graphene oxide film between woven layers, so as to obtain a carbon fiber preform; primary densification is carried out through pretreatment activation, low-temperature permeation and high-temperature permeation, and two graphitization treatments are combined; siliconizing is carried out through low-pressure permeation, high-pressure strengthening and laser cladding, and secondary densification is carried out through precursor impregnation and cracking; the titanium zirconium silicide-nano aluminum oxide composite layer generated through the embedding process forms a compact oxidation film at high temperature, and the silicon carbide nano crystal whiskers are subjected to chemical vapor deposition, so that the strength and ablation resistance of the prepared carbon ceramic brake disc are improved.

The invention discloses a plasma hydrodynamic cavitation aeration coupled piezoelectric catalysis organic wastewater treatment system and method. The system comprises a wastewater tank, a water pump, a Venturi tube hydrodynamic cavitator, a catalytic oxidation reactor, a piezoelectric particle separator, a piezoelectric catalytic particle bin, a low-temperature plasma generator and an air pump. By coupling piezoelectric catalysis, pressure pulsation mechanical energy generated by hydrodynamic cavitation is converted into chemical energy for driving the piezoelectric effect, on one hand, pollutants are directly oxidized, and on the other hand, plasma by-product H2O2 is efficiently converted into. OH with strong oxidizing property, so that cooperation with plasma advanced oxidation is formed, and the pollutant removal efficiency is improved. The pollutant degradation energy efficiency and the energy utilization rate of the system are greatly improved. Meanwhile, the system realizes efficient recovery and cyclic utilization of the magnetic piezoelectric catalytic particles through the magnetic separation type piezoelectric particle separator, so that secondary pollution of the catalyst is fundamentally avoided.

The invention relates to the technical field of photovoltaics, and discloses photovoltaic conductive silver-coated copper micro powder and a preparation method thereof, and the preparation method aims to solve the problem that performance and cost of existing silver-coated copper micro powder in photovoltaic application are difficult to consider at the same time. Through pH adjustment, organic pre-bonding treatment and gradient ammonification, the activity of the copper powder is reserved, and a uniform copper-ammonia complexing layer is constructed; in the chemical silver plating stage, the pretreatment liquid is added into a composite base solution containing a complexing agent, organic amine, a dispersing agent and a combined reducing agent, and a silver-ammonia solution is dropwise added for reaction under ultrasonic dispersion and nitrogen introduction protection; and in the post-treatment stage, a finished product is obtained through ethanol reflux desorption, antioxidant treatment, vacuum drying, low-temperature plasma activation and screening, uniform and complete coating of a silver layer can be achieved under the low silver content, and a feasible path is provided for replacing photovoltaic pure silver powder with silver-coated copper micro powder on a large scale.

Provided are reduced-temperature plasma enhanced atomic layer deposition processes including application of a thin metal layer by contacting a substrate surface at temperatures of 300° C. or lower with a metal precursor and a plasma of a hydrogen-containing gas source generated directly or remotely.

The invention provides a method for improving passivation contact performance of a p region of a TBC battery, which comprises the following steps of: pretreating an n-type monocrystalline silicon wafer, depositing a SiO2 layer and boron (B) doped polycrystalline silicon (poly-Si), etching, performing laser ablation and the like, then depositing phosphorus (P) doped poly-Si, and finally depositing a passivation and anti-reflection layer and preparing a metal electrode. A tunneling oxide layer and boron in-situ doped polycrystalline silicon are deposited in a p region by adopting an ultra-low temperature plasma enhanced chemical deposition (PECVD) mode, the reaction of SiH4 and N2O is introduced to improve the deposition effect of the oxide layer at low temperature, the compactness of a film layer at low temperature is ensured to improve the separation of B on a SiO2 / c-Si interface, and the passivation performance is improved; b doping poly-Si is adopted in the p region, meanwhile, processing is matched with a nanosecond laser, non-equilibrium doping of the B to the poly-Si is achieved, the ultrahigh doping concentration is obtained, the p region passivation performance of the TBC is improved, and then the open-circuit voltage and the conversion efficiency of the TBC battery are finally improved.

The invention discloses a preparation method of a novel mixed metal oxide coating titanium electrode, and relates to the technical field of electrode preparation, the method comprises the following specific steps: titanium substrate pretreatment: a titanium plate is sequentially subjected to gradient polishing with 120-800-mesh abrasive paper, the polished titanium substrate is subjected to hydrochloric acid solution etching, argon plasma surface activation and drying treatment, and a titanium substrate is obtained; obtaining a clean substrate surface with proper roughness; through the low-temperature plasma treatment, pulsed bias magnetron sputtering and laser-induced atomic layer deposition (LA-ALD) combined technology, the binding force of the coating and the titanium substrate is remarkably improved, high-energy particles are used for bombarding the surface of the titanium substrate in the low-temperature plasma treatment, residual impurities are effectively removed, the surface roughness and active sites are increased, and the surface hardness of the titanium substrate is improved. In the pulsed bias magnetron sputtering process, the surface of the substrate is further cleaned through periodic ion bombardment, atomic diffusion and mixing between the coating and the substrate are promoted, a transition layer structure is formed, and therefore the binding force is greatly enhanced.

The invention discloses a low-temperature plasma cold sterilization and fresh-keeping method for a chilled poultry meat product, and particularly relates to a low-temperature plasma cold sterilization and fresh-keeping method for the chilled poultry meat product by virtue of low-temperature plasma activated water (PAW) and dielectric barrier (DBD). The method comprises the following steps: spraying and sterilizing the whole slaughtered and eviscerated poultry meat by virtue of PAW with the temperature close to the freezing point temperature of-1.5 to-2.5 DEG C of the product; the fresh-keeping method comprises the following steps: soaking the fresh-keeping materials in PAW at the temperature of less than or equal to-1.50 DEG C, cooling to the temperature of-1.5 + / -0.5 DEG C, cutting and packaging, carrying out DBD low-temperature plasma cold sterilization under the working voltage of 120-160 kV, and carrying out cold-chain logistics under the condition of the fresh-keeping temperature of-1.0 to-1.5 DEG C, so that the fresh-keeping period is prolonged from 4 days to 15 days. According to the method, PAW and DBD plasma cold sterilization and preservation are adopted at the temperature of the chilled products, the shelf life of the poultry meat chilled products is effectively prolonged on the premise of ensuring the freshness, safety and high quality of the poultry meat chilled products, and industrial innovation and sustainable development are promoted.

The invention discloses a low-temperature plasma-based portable joint inflammation accurate therapeutic apparatus, and relates to the technical field of arthritis treatment, the low-temperature plasma-based portable joint inflammation accurate therapeutic apparatus comprises a shell, the lower end of the shell is fixedly connected with a first magnetic type interface, the interior of the shell is fixedly connected with a graphene heat-conducting fin, the front end of the graphene heat-conducting fin is fixedly connected with a circuit board, and the circuit board is fixedly connected with a power supply. A plasma generator, a battery, an ozone neutralization module, a communication module and a control chip are fixedly installed at the front end of the circuit board, through a magnetic attraction structure of the first magnetic attraction type interface and the second magnetic attraction type interface, in cooperation with mechanical positioning of the positioning block and the butt joint groove, rapid replacement of the treatment probe is achieved, and by replacing probes of different forms, the treatment efficiency is improved. The probe can adapt to complex joint contours, a miniature ultrasonic transducer is integrated in the probe, tissue gaps can be temporarily expanded by means of the cavitation effect of ultrasonic waves, the penetration depth of plasma active particles is increased, and the probe effectively acts on deep synovial tissues.

The invention relates to the technical field of functional paper production, in particular to a pressing and flat pasting composite process of skin-touch surface polymer coated paper, which comprises the following steps: pretreating a base material through low-temperature plasma to form a nano groove; the preparation method comprises the following steps: preparing a bottom coating solution containing sulfydryl modified polyurethane and other components, a middle coating layer containing a carbon nanotube forest and a surface coating solution containing a fluorosilicone block copolymer, and sequentially coating, drying and curing; the coated paper and the base material treated by the silicon dioxide transition layer are compounded after being subjected to vacuum hot pressing and steam treatment, and then are subjected to ultraviolet ozone treatment, so that the comprehensive performance is improved. According to the process, by innovating a coating formula and a compounding technology, the wear resistance, pollution resistance and touch performance of the coated paper are remarkably improved, and the functions of antibiosis, temperature sensing adjustment and the like are achieved; the gloss is adjustable, the adhesive force is high, the VOCs emission is low, the environmental protection property is good, and the multi-element requirements of the high-end market are met.

The invention discloses a regenerated slurry preparation method based on recycled ceramic casting membranes, and belongs to the technical field of ceramic slurry preparation, and the method comprises the following steps: S1, pretreatment, fine crushing and deep extraction, and supercritical CO2 fluid extraction after crushing treatment; s2, thermal degreasing and activation: step-by-step temperature control removal and surface modification step-by-step heating thermal degreasing: in the first stage, the temperature is 150-250 DEG C, and heat preservation is performed for 1-2 hours; in the second stage, the temperature is 300-400 DEG C, and heat preservation is conducted for 0.5 h; s3, a plasma surface activation process: putting the ceramic powder into low-temperature plasma treatment equipment, introducing a mixed gas of argon and oxygen as a working gas, and treating under the action of specific radio frequency or microwave power; s4, slurry reconstruction, precise formula and optimized dispersion gradient powder mixing, wherein regenerated ceramic powder and new ceramic powder are mixed; and constructing a dispersion system: adding a solvent and a composite dispersant, and carrying out dispersion ball milling.

The invention relates to a preparation method of a heating cigarette tobacco sheet with high thermal conductivity and a product and application thereof, and the preparation method comprises the following steps: dispersing boron nitride nanowires and / or boron nitride nanotubes in water, and carrying out ultrasonic treatment to obtain a boron nitride dispersion liquid; mixing the tobacco raw material subjected to low-temperature plasma treatment with the dispersion liquid, carrying out vacuum stirring treatment, and then unloading vacuum to normal pressure to obtain a tobacco treatment object; mixing the tobacco pulp with an adhesive, an atomizing agent, water and optional flavors and fragrances to obtain tobacco pulp; carrying out roll forming on the tobacco slurry on a tobacco sheet substrate material to form a sheet blank; and then carrying out drying treatment to obtain the product. The tobacco sheet can solve the problems that an existing heat-not-burn cigarette is poor in heat conductivity, uneven in heating, low in smoke release rate and insufficient in fragrance release, and the smoking experience of a user is improved.

The invention provides a waste PET lining cloth grading alcoholysis and in-situ polymerization regeneration method, and relates to the technical field of waste textile recycling, and the method comprises the following steps: adopting a near infrared spectrum combined AI image identification technology to realize waste PET lining cloth material classification, and removing pollutants through low temperature plasma-biological enzyme synergistic cleaning; putting the pretreated PET fragments into three-stage series reaction kettles, and dynamically adjusting the temperature and the catalyst concentration of each stage of reaction kettle through a control algorithm to realize PET depolymerization degree gradient control; according to the method, the graded alcoholysis and in-situ polymerization synergistic technology is adopted, so that the performance of the waste PET lining cloth regenerated fiber is improved in a leap-over manner, the molecular weight and the fiber strength of the regenerated PET are improved through the three-stage tandem reaction kettle and the control algorithm, and the technical bottlenecks that the strength of a physical method is low and the molecular weight loss of a chemical method is large are broken through; the mechanical property of the regenerated material is obviously 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 discloses an enhanced plasma ignition system and method, and belongs to the technical field of low-temperature plasma ignition and combustion supporting, the system comprises an electric spark ignition system, a first one-way conduction module, a second one-way conduction module, a discharge enhancement module, a plasma unit and an electric control module; the first one-way conduction module is connected in series with the electric spark ignition system, and the second one-way conduction module is connected in series with the discharge enhancement module; the electric control module is connected with the electric spark ignition system, the discharge enhancement module, the first one-way conduction module and the second one-way conduction module and then is connected with the plasma unit. The transition of plasma discharge from an electric spark mode to arc plasma is realized, the effective enhancement of the ignition energy, plasma density, temperature and active free radicals of the plasma igniter is realized, the equipment is simple, the efficiency is high, the cost is low, and instantaneous high power and high ignition energy are easy to realize.

The invention discloses prime coat slurry for a positive electrode of a lithium battery and a preparation method of a prime coat coating. The prime coat slurry is prepared from the following components in percentage by mass: 4-5% of a conductive agent, 5-6% of a binder, 14-16% of an alcohol solvent and the balance of deionized water, wherein the conductive agent is composed of spherical conductive carbon black, flaky conductive graphite, carbon nanotubes and graphene. Through the innovative quaternary conductive agent combination and low-temperature plasma synergistic modification technology, the conductivity and binding force of a prime coat coating are remarkably improved, and meanwhile the pulping process and the aluminum foil pretreatment effect are optimized. The flake graphite is used as a micron-sized conductive agent, a main body frame of the conductive layer is built, the surface roughness is increased, and a good foundation is provided for subsequent attachment of the positive electrode active layer; gaps among the flake graphite are filled with the spherical carbon black, and a basic conductive network is constructed.

The invention belongs to the technical field of battery materials, and mainly relates to a method for preparing porous carbon microspheres through microwave induction of high-entropy alloy-petroleum coke and application. The method comprises the following steps: performing low-temperature plasma activation treatment on crushed and sieved petroleum coke powder to obtain activated petroleum coke powder; mixing and reacting the activated petroleum coke powder with a salt solution containing at least five transition metals, and performing freeze drying to obtain a high-entropy alloy-petroleum coke composite material precursor; the high-entropy alloy-petroleum coke composite material precursor is subjected to microwave radiation treatment in an inert atmosphere, and a carbonized precursor of a spherical structure is obtained; and performing high-temperature activation treatment on the carbonized precursor with the spherical structure in an activation atmosphere, and performing acid pickling and drying to obtain the porous carbon microsphere material. According to the method, the porous carbon microsphere material with high specific surface area, high microporosity and excellent conductivity is prepared through plasma activation, multi-metal complexation, microwave radiation and high-temperature activation treatment, and can be applied to a negative electrode material of a lithium ion battery.

The invention discloses a preparation method of a CVD (Chemical Vapor Deposition) silicon carbide coating, and relates to a preparation method of a silicon carbide coating. The invention aims to solve the problems of poor uniformity and non-ideal anti-oxidation effect of the existing silicon carbide coating. The method comprises the following steps: 1, low-temperature plasma treatment; 2, preparing a nano particle dispersion liquid; 3, a CVD (Chemical Vapor Deposition) process; and 4, post-processing. The method is used for preparing the CVD silicon carbide coating.

The invention discloses a waste incineration fly ash innocent treatment method and system based on low-temperature plasma, and belongs to the technical field of dangerous solid waste treatment.The waste incineration fly ash innocent treatment method comprises the steps that fly ash and a silicon-aluminum-based conditioner are mixed and granulated and then placed in a low-temperature plasma reactor, and treatment is conducted with air as a discharge medium; high-energy electrons and active free radicals generated by plasmas are utilized to synchronously realize efficient decomposition and mineralization of dioxin organic pollutants in the fly ash and reduction and stable solidification of heavy metal ions; the treated tail gas containing the active substances is cyclically degraded through a cyclone separator, and solid products can be used as safe building material resources; according to the method, one-stop deep detoxification of two typical pollutants in the fly ash is realized, the treatment temperature is low, the energy consumption is low, secondary pollution is avoided, and an efficient solution is provided for safe treatment and value-added utilization of the waste incineration fly ash.

The invention provides a hydrophilic modified polytetrafluoroethylene oil removal film and a preparation method thereof. A modified layer of the hydrophilic modified polytetrafluoroethylene oil removal film is mainly prepared from the following raw materials in percentage by mass: 8-12 wt% of a hydrophilic vinyl monomer, 0.3-0.6 wt% of a cross-linking agent, 0.2-0.5 wt% of an initiator and the balance of a deionized water solvent. A new chemical grafting modification strategy is adopted, the surface of the PTFE membrane is activated through low-temperature plasma, co-grafting and cross-linking polymerization of a hydrophilic monomer and a cross-linking agent on the surface of the PTFE membrane are initiated, and a layer of firm hydrophilic polymer brush with a three-dimensional network structure is constructed on the surface of the membrane; a stable hydration layer is formed on a membrane-water interface, the PTFE membrane is endowed with excellent underwater super-oleophobic property, the oil-water separation efficiency, flux and anti-pollution capacity of the PTFE membrane are remarkably improved, the technological process is simple, and the product performance is stable.

The invention discloses a multi-stage cooperative processing technology for a tinned pin oxide layer of a plastic package device, and belongs to the technical field of electronic component packaging. The process comprises the following steps of: (1) low-temperature plasma pretreatment: under a vacuum condition, adopting mixed gas of argon and nitrogen, and generating plasma through a radio frequency power supply to carry out irradiation treatment on the surface of a pin; (2) composite reduction treatment: soaking the device in a citric acid-ascorbic acid composite solution with the pH value of 2.8-3.5; and (3) molecular self-assembly protection: carrying out surface coating by adopting an ethanol solution of gamma-aminopropyltriethoxysilane, and curing to form an anti-oxidation protection layer. According to the method, effective removal and protection reconstruction of the oxide layer are achieved through a three-stage cooperative processing mechanism, the pin welding qualification rate can be increased to 98.5% or above, and the temperature in the processing process is always lower than the glass-transition temperature of a plastic packaging material.