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681 results about "Plasma technology" patented technology

Method for thinning grapheme layer by layer

The invention relates to a method for thinning grapheme layer by layer, which is characterized in that the method comprises the following steps of: firstly utilizing the plasma ashing technology, bombarding multi-layer grapheme by plasma and then annealing in a high-temperature furnace to remove the grapheme on the top layer so as to realize the effect of precisely thinning the grapheme. Through more times of plasma bombarding and high-temperature annealing, the effect of thinning the multi-layer grapheme layer by layer can be realized. The method is characterized in that in combination with the grapheme modification and grapheme anisotropic oxidation process conducted by adopting the plasma technology, the method accurately etches the multi-layer grapheme and can realize the effect of precisely thinning the multi-layer grapheme on a monoatomic layer and keep the excellent performance of the thinned grapheme. The method is applied to the preparation of a grapheme nanostructure, a grapheme electronic device and the like.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Process and apparatus for cleaning and/or coating metal surfaces using electro-plasma technology

A process for cleaning an electrically conducting surface (3) by arranging for the surface to form the cathode of an electrolytic cell in which the anode (1) is maintained at a DC voltage in excess of 30V and an electrical arc discharge (electro-plasma) is established at the surface of the workpiece by suitable adjustment of the operating parameters, characterized in that the working gap between the anode and the cathode is filled with an electrically conductive medium consisting of a foam (9) comprising a gas / vapor phase and a liquid phase. The process can be adapted for simultaneously coating the metal surface by including ions of the species required to form the coating in the electrically conductive medium. Apparatus for carrying out the process is also disclosed and, in particular, an anode assembly (1) which comprises a perforated anode plate (2) which is in communication with a chamber (4) adapted to receive a flow of a liquid electrolyte, means to supply the liquid electrolyte to the chamber, and means (7) to convert the liquid electrolyte received in the chamber into a foam.
Owner:CAP TECH LLC 50 DANILA VITALEVICH RYABKOV 50 +1

Anticoagulation high polymer biomaterial as well as preparation method and application thereof

The invention discloses an anticoagulation high polymer biomaterial which comprises a substrate layer, an anticoagulation coating, and a plasma polymerization layer positioned between the substrate layer and the anticoagulation coating, wherein the substrate layer is made of a biomedical material; the plasma polymerization layer is an allylamine plasma polymerization membrane layer deposited on the substrate layer; the anticoagulation coating is an anticoagulant layer fixed on the plasma polymerization layer; and the anticoagulants comprise hirudin, heparin and the like. Anticoagulant molecules are fixedly grafted on the material surface by utilizing the pulsed plasma technology and surface heparin grafting method, and effective molecule orientation is remained by heparin molecules, so the anticoagulant performance is close to the performance of heparin molecules in the solution. Meanwhile, the heparin molecules are difficultly scoured off by blood, the persistence and stability of the anticoagulation effect are guaranteed, and the service life is long. The invention further discloses a preparation method and application of the anticoagulation high polymer biomaterial.
Owner:スンナテクノロジーズシャンハイカンパニーリミテッド

Gas turbine blade thermal barrier coating bonding layer and preparation method thereof

A gas turbine blade thermal barrier coating bonding layer is composed of powdery Co, Ni, Cr, Al and Y. The optimal range of the powder particle size is 10-50 micrometers. A preparation method comprises the steps that 1, oil removal, washing and drying are performed on the surface of a matrix before spraying is performed, 40-80-mesh corundum is used for sand-blasting roughening, and floating dust is removed to form the rough surface; 2, the powder forming the bonding layer is kept at the temperature of 200-300 DEG C for 4 h before spraying is performed, and the powder is sufficiently softened; 3, a cold spraying method is adopted for preparing the bonding layer on the surface of the matrix; 4, the surface of the bonding layer is sprayed through the plasma technology to obtain an 8YSZ ceramic surface layer; 5, a complete thermal barrier coating is kept at the temperature of 900-1100 DEG C in a vacuum heat treatment furnace for 4 h, and the vacuum degree is lower than 10<-3>Pa. The technology is simple and low in cost; the porosity of the bonding layer is controlled to be smaller than 1%, and the structure is compact; pressure stress exists inside the coating, and the thermal expansion matching in the coating service process can be relieved; the bonding strength of the coating is improved, and the oxidation resistance of the coating is improved.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Photoelectric integrated processing device and photoelectric integrated processing technique for waste gases generated by spraying paint

The invention discloses a photoelectric integrated processing device and a photoelectric integrated processing technique for waste gases generated by spraying paint. A washing processing unit, a low-temperature plasma processing unit and a photocatalytic processing unit are arranged inside a device casing and are sequentially connected. The photoelectric integrated processing technique comprises the following steps that the waste gases generated by spraying paint enter the washing processing unit through a pipeline for spraying at first to remove particulate matters in the waste gases generated by spraying paint; the waste gases generated by spraying paint then enter into a demisting unit for further removing paint mist; the waste gases generated by spraying paint are discharged into a plasma module for oxidizing organic matters in the gases; finally, the waste gases generated by spraying paint enter the photocatalytic processing unit, and by taking a carbon fiber adsorption layer as a catalytic carrier, the organic matters adsorbed in carbon fiber pores are oxidized and decomposed by using an ultraviolet lamp tube. According to the equipment, an absorption method, a low-temperature plasma technology, a photocatalytic technique and an activated carbon adsorption technique are effectively combined, so that the problems of secondary pollution, shorter operation cycle, short operation life and the like existing in single technique are solved while the treatment efficiency of the waste gases is improved.
Owner:杭州科瑞特环境技术有限公司

Preparation method of graphene foams

The invention relates to a preparation method of graphene foams. The preparation method of the graphene foams comprises the steps: carrying out plasma technology treatment on foamed nickel, and soaking in a graphene oxide solution; reducing graphene oxide coating the foamed nickel in the solution; placing the foamed nickel coated with graphene in the solution, removing the nickel template through metal corrosion, and repeatedly washing with absolute ethyl alcohol and water, and thus obtaining the graphene foams. The material not only has extremely low density, extremely high porosity and high specific surface area, but also has excellent conductivity of graphene. Compared with the prior art, the preparation method has the advantages of simple process, low cost, easy industrial popularization, and convenient industrialized mass production.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH

Nano silver in-situ formation silver-plating method based on plasma modification and silver-plated fabric

The invention relates to a nano silver in-situ formation silver-plating method based on plasma modification and a silver plated fabric. In the provided method, a plasma surface treatment modification technology is adopted to crack and etch the surface of synthetic fibers so as to form micro pits and fine cracks on the surface of fibers, thus the surface area of the fibers is enlarged, and the wettability of the fiber surface is improved. At the same time, the surface of the fibers is etched, and the binding strength between the metal coating and the fibers is enhanced. After the fibers are subjected to an oxygen gas plasma technology, hydrophilic and polar groups (-COOH, =C=O) are grafted on the fiber surface, thus silver ions can be adhered on the fiber surface more easily; in the presence of polyvinylpyrrolidone (PVC), sodium borohydride (NaBH4) is taken as the reducing agent to directly reduce the silver ions into nano silver particles, and a compact silver coating is in-situ generated on the etched fiber surface. The provided method has the advantages of simple technology, environment-friendliness, energy saving, and reduced cost. The silver coating on the produced silver-plated fabric is uniform and compact, the binding force between the silver coating and the fabric is strong, and the method is worth to promote.
Owner:SHANHAI CHENLONG TEXTILE NEW MATERIAL CO LTD

Wet-type flue gas treating reactor by pulse corona

The invention discloses a wet-type pulse corona smoke gas treatment reactor. The reactor comprises a shell; the lower end of the shell is provided with a gas inlet; the upper end of the shell is provided with a gas outlet; the inner wall of the shell clings to and is provided with a running water polar plate; the upper part of the running water polar plate is provided with a water sprayer; the bottom of the shell is provided with a water outlet; a sorbent is ejected from the water sprayer and flows from top to bottom along the running water polar plate; and finally, the sorbent is collected in the water outlet and flows to a feed discharge pool; the center of the shell is provided with an acicular corona wire; the acicular corona wire and the running water polar plate form two electrodes for corona discharging; the running water polar plate is connected with positive pulse high voltage; and the acicular corona wire is connected with negative pulse high voltage. The wet-type pulse corona smoke gas treatment reactor compounds non-thermal equilibrium plasma technology, physical adsorption technology and chemical absorption technology, realizes high-efficiency removing of PM2.5, SO2 and NOx in the same reactor, greatly simplifies a smoke gas treatment system and reduces investment and operating cost.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Coaxial microwave plasma film-deposition equipment

InactiveCN104357810AIncrease the areaReal-time monitoring of electron densityChemical vapor deposition coatingPlasma technologyCoaxial line
The invention discloses coaxial microwave plasma film-deposition equipment, and belongs to the field of plasma technology. The equipment comprises a vacuum chamber, wherein a coaxial microwave plasma source is fixedly mounted on the vacuum chamber; the coaxial microwave plasma source comprises microwave generators, waveguides, coaxial line convertors, a quartz tube and an inner electrode; the quartz tube is located in the vacuum chamber and fixedly mounted on two side walls of the vacuum chamber; the coaxial line convertors are coaxially, symmetrically and fixedly mounted at the two ends of the quartz tube via the outer side wall of the vacuum chamber; the coaxial line convertors are connected with the microwave generators via the waveguides; the inner electrode penetrates through the quartz tube and is fixed on the coaxial line convertors; the inner electrode, the coaxial line convertors and the quartz tube are coaxial; the equipment is further provided with an instrument for testing the electron density and the electron temperature of plasmas and automatic power and air pressure control equipment and system, can obtain stable high-controllability plasmas, and can realize efficient, stable and uniform film deposition; the equipment has high production efficiency and is low in production cost.
Owner:CHANGZHOU INST OF DALIAN UNIV OF TECH

Biological cell wall breaking system and biological effective component extracting system based on pulsed discharge plasma technology

The invention relates to a biological cell wall breaking system and a biological effective component extracting system based on the pulsed discharge plasma technology, solving the problems that the current traditional drug processing method is insufficient to break the biological cell walls and the extraction efficiency is low in the current methods for extracting the biological effective components. The biological cell wall breaking system first adopts high-voltage discharge to generate plasmas and then adopts the generated shock waves and living radicals to break the biological cell walls. The biological effective component extracting system first adopts the biological cell wall breaking system to break the biological cell walls to separate the biological effective components from the cells and then carries out filtration and concentration to obtain the biological effective components. The biological cell wall breaking system of the invention can be used in the technical field of breaking the biological cell walls and the biological effective component extracting system can be used in the field of extracting the biological effective components.
Owner:HARBIN INST OF TECH
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