179 results about "Plasma surface" patented technology

The invention belongs to the technical field of photovoltaic backboards, and particularly relates to a high-reflection integrally-formed backboard for a single-glass assembly and a preparation method thereof.The preparation method comprises the following steps that S1, a PET film base material is provided, plasma surface treatment is conducted, then polyurethane coating is coated on the two sides to form an outer-layer weather-proof fluorine coating and an inner-layer functional coating respectively, and the outer-layer weather-proof fluorine coating and the inner-layer functional coating are formed; a CPC backboard base material is obtained; s2, white high-reflection EVA granules are fused and plasticized, a white EVA adhesive film is obtained through extrusion of a hanger type T-shaped flat die head, then the white EVA adhesive film is compounded with the inner functional coating of the CPC backboard base material, and a firm complex without a definite physical interface is obtained through rolling; s3, cooling the composite body through at least two stages of cooling rollers to obtain a coiled material; and S4, the coiled material is irradiated, and the high-reflection integrally-formed backboard is obtained.

The invention relates to the technical field of composite material preparation, and discloses a high-load composite material telegraph pole and a pultrusion preparation method thereof.The method comprises the steps of fiber configuration, resin matrix preparation, dipping, preforming, pultrusion and aftertreatment. Wherein the proportion of fibers for direct yarn feeding accounts for a high proportion of the total mass of the fibers, the fibers are distributed in the longitudinal direction of a product, the longitudinal reinforcing effect of the telegraph pole is guaranteed, the loading capacity and mechanical strength of the product are improved, meanwhile, the tension of the fibers is controlled through a tension control system, the stability of the fibers before dipping is guaranteed, and a fiber reinforcing system is optimized; the functional additive is added, and the functional additive comprises nano silicon dioxide subjected to plasma surface treatment and a silane coupling agent, so that the uniformity and dispersity of a resin matrix are improved, the interface bonding of fibers and resin is enhanced, and the overall performance of the composite material is improved.

The application discloses a coating structure of a valve rod of a nuclear power plant, a valve rod and a preparation method thereof, and the coating structure comprises a transition layer and a hydrogen-free diamond layer which are sequentially arranged from inside to outside, the microstructure of the transition layer is nanotwin, and the coating structure is uniformly covered on the surface of the valve rod. The preparation method comprises the following steps: after the valve rod is cleaned, the valve rod is subjected to plasma surface activation, the transition layer and the hydrogen-free diamond layer are sequentially deposited, and the valve rod is obtained. The coating structure of the valve rod of the nuclear power plant, the valve rod and the preparation method thereof effectively improve the hardness of the surface of the valve rod, reduce the friction loss of the valve rod, make the valve rod have good wear resistance and a reduced friction coefficient, improve the work efficiency, and further improve the service life of the valve rod, can meet the technical performance requirements of the valve rod on impact toughness, corrosion resistance and wear resistance in a high-temperature and high-pressure water environment, and effectively reduce the production cost.

The invention belongs to the field of automobile interior manufacturing, and discloses an automobile interior real wood surface digital printing process which comprises the following steps: S1, preparing a base material: selecting a wood veneer of 0.3-0.6 mm, cutting the wood veneer, polishing, spraying water for humidifying and mechanically leveling; the surface of the wood veneer is colored and sprayed with a transparent resin protection layer, then the surface of the protection layer is treated through a plasma surface treatment technology, and the surface energy and the chemical activity of the protection layer are improved; s3, digital printing: coating the surface of the treated protective layer with a bottom coating liquid, printing a pattern by using digital jet printing equipment, and then carrying out UV curing; s4, interior trim part forming, wherein the printed and cured wood veneer is attached to the automobile interior trim plastic base material at the temperature of 55-60 DEG C; and S5, surface layer protection: applying transparent protective finish paint on the surface of the laminated product. The process can solve the problems that the printing definition of an ink layer on the real wood surface of the existing automotive trim is low, and the ink layer is easy to peel, wrinkle and bloom in the processing or using process.

The invention relates to the technical field of polyimide film preparation, in particular to a high-light-transmittance polyimide film and a preparation method thereof.The preparation method comprises the following steps that aromatic diamine monomers are subjected to vacuum drying and then dissolved in an organic solvent, dianhydride monomers are slowly and dropwise added after the temperature is increased, a polyamide acid solution is obtained through segmented temperature control curing, and a polyimide film is obtained; performing vacuum defoaming on the solution, coating a substrate with the solution, performing gradient heating imidization treatment to obtain a film crude product, and performing plasma surface treatment and inert atmosphere annealing to obtain the high-light-transmittance polyimide film. According to the preparation method, conventional monomers are adopted, through optimization of drying, polymerization, defoaming, film forming, imidization and post-treatment process parameters, introduction of special structural monomers or external filler adding is not needed, the process is simple, the cost is low, the preparation method is suitable for large-scale production, and the prepared polyimide film is high in light transmittance at the wavelength of 550 nm and high in transparency. The optical uniformity, the surface flatness, the thermal stability and the mechanical property are excellent.

This invention provides an anti-aging and repair dressing containing four complex active factors and its preparation method. The dressing comprises 75-90 parts of a matrix material, 5-15 parts of four complex active factors, and 3-8 parts of a moisturizing auxiliary agent. The four complex active factors are composed of recombinant human type III collagen, acetyl hexapeptide-8, ectoine, and dipotassium glycyrrhizate in a ratio of (3-6):(1-3):(2-4):(1-2). The matrix is ​​a hydrophilic nonwoven fabric or bio-cellulose membrane material that has undergone low-temperature plasma surface grafting activation treatment. The preparation process employs nitrogen combined with vacuum pulse freeze-drying technology, and enhances the activity stability through an ectoine complexation step. This dressing can promote HaCaT cell proliferation, increase collagen secretion, and inhibit inflammatory factors, significantly improving skin barrier function. It has good biocompatibility and can be used to prepare products that improve skin aging and repair.

The invention discloses a preparation method of a high-resilience expanded polytetrafluoroethylene sealing material, and belongs to the technical field of high polymer material modification. According to the method, high-molecular-weight or modified polytetrafluoroethylene is used as a matrix, and high-orientation fibers are obtained through ultrasonic premixing, twin-screw melt extrusion, stretching and heat setting; dipping the fiber in a dispersion liquid containing high-entropy alloy nanoparticles, carbon nanotubes and graphene nanosheets, carrying out vacuum drying and gradient heat treatment to form a nano-reinforced precursor fiber, and constructing a porous anisotropic skeleton by adopting conventional or supercritical expansion and a specific weaving process; and interface strengthening and surface functionalization are realized through plasma surface treatment, silane coupling agent chemical grafting and wear-resistant coating coating. The obtained sealing material has low density, high strength, high resilience and low compression set, has excellent chemical medium resistance and anti-static performance, and is suitable for sealing parts of flanges, valves and the like under harsh working conditions of petrochemical engineering, electric power, hydrogen energy, aerospace and the like.

The application relates to the technical field of medical dressing preparation, and discloses a hemostatic, healing-promoting and antibacterial foam dressing and a preparation method thereof. The method uses sodium alginate and carboxymethyl chitosan as a composite polysaccharide matrix, mixes the two, adds a calcium chloride solution to crosslink a porous gel support, and then carries out freeze-drying to obtain a porous framework; gelatin and polyvinyl alcohol can be further added to enhance the mechanical strength, zeolite particles loaded with silver ions are added to achieve antibacterial performance, epidermal growth factor release microspheres are added to promote healing, and the dressing can be further subjected to heparinization, plasma surface modification, thrombin addition, salt precipitation pore formation and sterilization treatment. The dressing prepared by the method has the functions of synergistic hemostasis, antibiosis and healing promotion, has good biocompatibility and suitable mechanical strength, and has a simple preparation process, and can be used for various wound care.

The application discloses a method for dynamically and continuously preparing a high-strength and stable ultrathin tin-based protective layer on a copper wire and a copper wire with the high-strength and stable ultrathin tin-based protective layer. The method comprises the following steps: the copper wire enters a deposition chamber through a plurality of vacuum differential pressure sealing transition chambers, an ultrathin nanocrystalline coating is deposited by using a Sn-Ge alloy target with a mass fraction of Ge of 0.2-0.6 wt%, then the ultrathin nanocrystalline coating is treated by on-line bombardment processing in an adjacent vacuum chamber by using 20-80 eV Ar / N2 mixed low-energy plasma, and finally the copper wire is taken out through the plurality of vacuum chambers and is wound on a take-up reel, so that the preparation is completed. Through the synergistic effect of Ge element pinning nanocrystalline and plasma surface layer densification, the unity of coating structure stability, tin whisker inhibition and oxidation resistance is realized, the conductivity of the copper wire is not substantially reduced, the dynamic and continuous production is adapted, and the method has relatively high industrial practicability.

The utility model relates to the technical field of tableware printing, in particular to an automatic printing device for digital jet printing of tableware, which comprises a conveying unit, an automatic box dividing unit, a plasma surface treatment unit and a digital jet printing unit which are sequentially erected above the conveying unit. The automatic box separating unit comprises an adjusting mechanism and four discharging mechanisms, and the four discharging mechanisms are fixedly installed on the adjusting mechanism. The feeding mechanism has the advantages that by arranging the lengthening plates, more meal boxes can be placed among the four feeding mechanisms, when the number of the meal boxes among the four feeding mechanisms is reduced and the height of the stacked meal boxes is lower than the bottom ends of the lengthening plates, one lengthening plate can be pulled out and taken down, then the meal boxes continue to be stacked among the four feeding mechanisms, and the meal boxes can be placed among the four feeding mechanisms. After the meal boxes are stacked, the lengthened plate which is taken down is remounted to the original position, so that the problem that materials need to be placed frequently is avoided, and filling is facilitated.

This invention discloses an aramid fiber reinforced solid conveyor belt and its preparation method, relating to the field of conveyor belt technology. Specifically, it includes the following steps: S1: Aramid fiber cloth passes through a continuous plasma surface treatment machine at a uniform speed, and its upper and lower surfaces are subjected to plasma activation treatment to obtain modified aramid fiber cloth; S2: (1) Natural rubber, styrene-butadiene rubber, chloroprene rubber, ethylene propylene diene monomer (EPDM) rubber, terpene phenolic resin, modifier, modified filler, bis-[3-(triethoxysilyl)propyl]tetrasulfide, zinc oxide, antioxidant, flame retardant, sodium stearate, vulcanizing agent, and vulcanization accelerator are added to a mixing machine and mixed to obtain a compound; (2) The compound is transferred to a calender and calendered to obtain a cover layer; S3: The cover layer, modified aramid fiber cloth, and cover layer are stacked in the order of top to bottom, and then rolled, bonded, and vulcanized to obtain an aramid fiber reinforced solid conveyor belt.

The invention relates to the technical field of surface treatment, in particular to a plasma enhanced tube inner wall surface modification treatment device and method. The problems of poor uniformity, insufficient adhesive force, low film layer quality, complex operation and the like in the existing inner pipe wall surface modification technology are mainly solved. According to the technical scheme, the device comprises a plasma power supply, a transmission system, a matching box, a plasma surface treatment system, a tubular furnace heating system, a vacuum system, a gas source, a flow control unit, a display system and a control system, the plasma power supply is used for providing energy for surface modification treatment, the output end is connected with the input end of the matching box through the transmission system, and the output end of the matching box is coupled with the plasma surface treatment system. The multi-component collaborative plasma enhanced pipe inner wall treatment system is constructed, diversity performance improvement is achieved, the system further has scene adaptability, environmental protection, high efficiency and expansibility, a reliable scheme is provided for pipe inner wall modification, and industrial application is promoted.

The invention discloses multi-component alloy electrode plasma surface modification treatment equipment, and particularly relates to the field of plasma surface modification treatment.The equipment comprises a vacuum cavity, a box door is arranged on the outer side of the vacuum cavity, and an inflation mechanism, a vacuum mechanism and a waste gas treatment mechanism are arranged on the outer side of the vacuum cavity; a detection mechanism, an electrifying mechanism and a limiting mechanism are mounted in the vacuum cavity, and the limiting mechanism comprises a metal grid plate. Through the arrangement of the detection mechanism and the limiting mechanism, ions in the plasma are controlled to move within a certain range by utilizing an electric field force generated by bias voltage, so that the generation rate of the ions in the plasma is not influenced while gas in the vacuum cavity is exhausted, and meanwhile, according to the concave-convex condition of the surface of a material, the plasma can be accurately detected. The ion spraying rate and the ion generation rate are controlled, the working time of the device is shortened, and the working efficiency of the device is improved.

This invention provides a washing system and method for calcium fluoride granules produced through nucleation granulation, comprising a plasma surface activation module, a supercritical fluid extraction washing module, and an intelligent control and circulation module connected in sequence. The plasma surface activation module is used to perform surface modification and impurity weakening treatment on pre-dried calcium fluoride granules. The supercritical fluid extraction purification module is used to deeply remove impurities from the surface and pores of the granules under anhydrous conditions. The intelligent control and circulation module is signal-connected to the aforementioned modules and is used to dynamically regulate the entire purification process based on online monitoring data. The plasma surface activation module includes a vibrating fluidized bed with a reaction chamber, solving the problem of incomplete removal of stubborn surface impurities by traditional water washing. Ultimately, the surface impurity removal rate of the calcium fluoride granules is stabilized at over 95%, and the product purity reaches a high standard for resource utilization.

This invention discloses a SiC with an ultra-high temperature ceramic gradient coating. f / SiC composite materials, their preparation methods, and applications. A double-layer glow discharge plasma surface metallurgical method is used to prepare SiC composite materials. f A (Hf,Si,Ta)C gradient composite coating was prepared on the surface of the SiC composite material. This coating was able to resist SiC in an oxygen atmosphere at 1773 K. f Effective protection of SiC composite materials. The specific advantages of this invention are: (1) Ion bombardment of the substrate significantly improves the point defects and conductivity of the composite substrate; (2) The (Hf,Si,Ta)C coating has a continuous gradient structure, forming a good metallurgical bond between the coating and the substrate, with high bonding strength; (3) The similar thermal expansion coefficients of the (Hf,Si,Ta)C coating and the substrate can improve the thermal mismatch between the coating and the substrate, reducing the tendency for coating peeling and cracking during service; (4) The (Hf,Si,Ta)C coating system has a high service temperature and self-healing ability. The coating prepared by this invention has excellent high-temperature protection performance, improving the protection of SiC. f The high-temperature service life of SiC composite materials has broad application prospects in the aerospace field.

This invention discloses an MXene-coated modified PLA nonwoven fabric and its preparation method. The preparation method includes the following steps: preparing an MXene solution using HCl and LiF; preparing PLA nonwoven fabric through electrospinning; etching and plasma surface treatment of the PLA nonwoven fabric to obtain the nonwoven fabric body; and spraying the MXene solution onto the surface of the nonwoven fabric body to obtain the MXene-coated modified PLA nonwoven fabric. This invention establishes a lightweight MXene-coated modified nonwoven fabric preparation technology, breaking through the technological gap in this field. The obtained nonwoven fabric material has good thermal stability, electrical conductivity, and electrothermal / photothermal conversion properties, which can integrate Joule heating and solar photothermal conversion into wearable heating systems, enabling precise body heating in various scenarios such as indoor / outdoor, day / night, sunny / cloudy conditions. Using polylactic acid as the base material is more environmentally friendly while giving the nonwoven fabric good breathability and toughness, enriching its application range.

The invention discloses a production system and a production process of a medium-high molecular weight polyethylene circulation logistics bag. The production system comprises twisting equipment, warping equipment, weaving equipment, slitting equipment, lamination composite forming equipment and bag making equipment, the lamination composite forming equipment is a multi-stage gradient temperature control lamination composite forming machine and comprises four functional modules, namely a base cloth pretreatment and preheating module, a surface micro-activation and co-extrusion module, a gradient composite and precise temperature control module and a multi-stage slow cooling shaping module; the corresponding production process comprises the following steps: twisting, warping, weaving and slitting to obtain the base cloth; carrying out preheating dust removal and plasma surface micro-activation on the base cloth; through co-extrusion and gradient lamination compounding, rolling and bag making are performed after three-roller stepped cooling and shaping; through the synergistic effect of plasma activation and bonding resin co-extrusion, the gradient temperature control and slow cooling shaping technology is combined, the adhesive force of the lamination layer and the base cloth is improved, thermal damage to the base cloth is effectively avoided, the uniformity of the film layer is ensured, and meanwhile the advantages of energy conservation and consumption reduction are achieved.

The invention provides a full-lamination reinforcing method for a curved-surface large-size liquid crystal screen. The method comprises the following steps: calibrating a curved-surface contour through 3D laser scanning and activating a plasma surface to realize accurate pretreatment; three-section gradient pressurization of a non-Newtonian fluid adhesive and a self-adaptive curved surface pressure head is adopted, and the bubble rate is reduced in combination with UV preliminary curing; an edge double-reinforcing structure is constructed through the flexible buffer strip, the hot melt adhesive sealing and the light-weight alloy frame; stress is eliminated through stepped temperature curing and ultrasonic vibration; and finally, the yield is guaranteed through AOI detection and reliability test. According to the method, the fitting bubble rate can be reduced, the vibration resistance and the cold and hot impact resistance are improved, the adaptive capacity under complex working conditions is met, the method is adaptive to 55-100 inch multi-curvature curved screens, and the method is suitable for high-precision and high-reliability scenes such as vehicle-mounted display and outdoor advertising screens.

A preparation method of a graphite heat-conducting gasket capable of being compressed and rebounded comprises the steps that an artificial graphite film is pretreated to obtain a pretreated film, and pretreatment comprises punching, bending, surface grafting and plasma surface treatment; preparing epoxy modified polydimethylsiloxane resin according to a preset proportion; wherein the preset proportion comprises the following components in percentage by mass: 90 to 98 percent of epoxy modified polydimethylsiloxane, 2 to 10 percent of polydimethylhydrosiloxane and 0.1 to 0.4 percent of platinum catalyst; coating the surface of the pretreatment film with the epoxy modified polydimethylsiloxane resin, and carrying out die assembly on the pretreatment film with a preset number of layers to obtain blocky graphite; and slicing and post-processing the blocky graphite to obtain the graphite heat-conducting gasket. By matching the epoxy modified polydimethylsiloxane resin with a specific ratio, a stable cross-linked network structure is formed, and the structural strength and the heat conduction stability of the gasket are further enhanced.

The invention discloses a high-performance polyolefin diaphragm as well as a preparation method and application thereof, and the preparation method comprises the following steps: A, cleaning a polyolefin diaphragm, and then carrying out surface treatment on the diaphragm by adopting plasma surface treatment equipment; b, selecting heteropoly acid, a metal source and an organic ligand with high ion conduction capability, preparing an in-situ growth precursor solution with a mixed solvent, soaking the diaphragm subjected to plasma surface treatment in the precursor solution, and carrying out hydrothermal reaction; and C, cleaning the diaphragm after the hydrothermal reaction with a solvent and absolute ethyl alcohol in sequence, and then taking out the diaphragm for vacuum drying. The high-performance ion conduction coating is constructed through an in-situ growth process by combining the synergistic effect of plasma surface activation and the supported heteropolyacid / metal organic framework. Meanwhile, the ionic conductivity, the thermal stability and the cycling stability of the polyolefin diaphragm are improved, the technological process is simplified, and high production efficiency and product consistency are achieved.

This invention belongs to the field of photon counting detector manufacturing technology, specifically relating to a plasma treatment method for the crystal surface of a photon counting detector and the resulting photon counting detector. The treatment method employs a step-by-step plasma surface modification process. First, the crystal wafer surface is bombarded with plasma generated by the ionization of an inert gas. Then, a secondary bombardment is performed using plasma generated by the ionization of reactive gases such as oxygen and hydrogen. Simultaneously, key process conditions such as process gas flow rate, wafer orientation bias, processing time, cavity vacuum, radio frequency power, plasma parameters, and wafer spacing are systematically controlled. This step-by-step modification process achieves nanoscale modification of the crystal surface, effectively repairing surface damage caused by processing and forming a uniformly distributed surface modification layer. Photon counting detectors fabricated using this method can significantly reduce device leakage current, improve withstand voltage performance, optimize energy resolution, and improve photon counting rate and counting stability.

The application discloses a kind of transparent anti-fog composite coating and its preparation method and application, belong to coating material technical field.The application is prepared with deionized water as solvent, respectively, and the mixture of two is obtained SiO2 / PAA anti-fog transparent composite coating with silica nanoparticle dispersion liquid and polyacrylic acid solution;Subsequently, substrate is cleaned, dried and is treated by plasma surface activation, and coating is added to the surface of pretreated substrate after using blade coating film, finally, transparent anti-fog composite coating is obtained in hot curing in air drying oven.The transparent anti-fog composite coating prepared by the application has good anti-fog performance, the average transmittance of visible light (380~750 nm) reaches 92%, has good durability and self-repairing function.The coating and its coated product can be applied in medical devices, optical devices, building and automotive glass and other fields.

This invention discloses a method for preparing alkali-resistant reinforced high-toughness glass fiber yarn, comprising: pretreatment of glass fiber precursors, including: selecting alkali-free glass fiber precursors, cleaning and drying them, and then performing plasma surface activation treatment; preparing a composite coating solution, including: mixing a silane coupling agent, nano-titanium dioxide, aluminum hydroxide, a dispersant, an antifoaming agent, and deionized water, stirring evenly, and then ultrasonically dispersing to obtain a uniform and stable composite coating solution; performing a composite coating treatment, including: immersing the activated glass fiber precursors in the composite coating solution, performing a padding coating treatment, and then performing preliminary drying to form a dense alkali-resistant protective film on the surface of the glass fiber precursors, thereby obtaining coated modified glass fiber precursors; and performing a blending treatment, including: blending the coated modified glass fiber precursors with basalt fiber microfilaments to obtain alkali-resistant reinforced high-toughness glass fiber yarn. A method for preparing fire-resistant glass fiber mesh fabric using alkali-resistant reinforced high-toughness glass fiber yarn as raw material is also disclosed.

The invention relates to the technical field of marble surface treatment, in particular to a natural marble self-cleaning anti-erosion surface treatment process. The technical problem to be solved by the invention is to provide the natural marble self-cleaning anti-erosion surface treatment process which is firm in combination, durable in function and suitable for large-scale production. The invention discloses a natural marble self-cleaning anti-erosion surface treatment process. The process comprises the following steps: performing plasma surface activation on a stone substrate; a nanometer titanium dioxide photocatalysis bottom layer is formed through liquid phase deposition and heat treatment; constructing a micro-nano super-hydrophobic surface layer consisting of fluorosilane modified nano silicon dioxide particles and hydrophobic resin on the bottom layer by adopting an electrostatic atomization spraying technology; and the coating is stabilized through gradient curing. According to the invention, a dual self-cleaning mechanism of photocatalytic decomposition of organic matters and super-hydrophobic physical repulsion is achieved, and meanwhile, the coating is firm in combination and high in durability.

The invention discloses a thermoplastic LCP (Liquid Crystal Polymer) composite material and a preparation method thereof. The composite material comprises 30-70wt% of a liquid crystal LCP fiber fabric as a reinforcing fiber and 30-50wt% of a thermoplastic resin matrix, the resin matrix can be selected from one of a thermoplastic polyurethane system or a modified polyether-ether-ketone system; the LCP fiber fabric is made of LCP fibers, and the fabric weave is plain weave; the preparation method comprises the four steps of LCP fiber spinning, LCP fiber reinforcement preparation, thermoplastic resin matrix preparation and melt impregnation molding. Wherein the LCP fiber is subjected to plasma surface treatment and silane coupling agent coating modification, a three-stage gradient hot drawing process is adopted for preparation, and finally the composite material is obtained through melt impregnation and hot press molding. The composite material has excellent mechanical properties and thermal stability, and can be used in the high-performance application fields of aerospace, electronics and the like.

The application discloses a high-density tungsten-copper alloy material and a preparation method thereof. The method comprises the following steps: proportionally preparing tungsten powder, a copper source precursor, an interface activator, a pore-forming agent and a dispersing aid; performing plasma surface activation treatment on the tungsten powder and performing complex activation liquid immersion reaction; mixing the treated tungsten powder with the copper source precursor, the dispersing aid and the interface activator, so that the copper source precursor is adsorbed on the surface of the tungsten powder and a composite coating layer is formed; after tungsten-copper composite powder is formed through drying and reduction, pore-forming mixing, pressing forming, degreasing pre-sintering and vacuum infiltration treatment are performed, so that the high-density tungsten-copper alloy material is obtained; the method can improve the surface activity of the tungsten powder and the dispersion stability of the slurry, makes the copper phase more uniformly distributed in the tungsten framework, and improves the interface bonding state between the tungsten phase and the copper phase; meanwhile, the method is convenient for the molten copper to enter the inside of a tungsten-based pre-sintered blank, reduces residual pores, and effectively improves the density, heat conduction and electric conduction performance and structural stability of the copper alloy material.

The invention relates to the technical field of abrasive tool abrasive cloth manufacturing, in particular to grinding abrasive cloth containing an innovative base material coating and a preparation method of the grinding abrasive cloth. Alkali-free glass fiber fabric serves as a base material, a three-dimensional through heat conduction network formed by nanometer boron nitride and aluminum oxide sol is constructed, a gradient cross-linking type primer layer and a functional glue coating layer are coated, and the grinding abrasive cloth containing the innovative base material coating is obtained. And carrying out stepped heating curing and plasma surface activation treatment. The problems of adhesive layer thermal aging, base cloth burning loss and abrasive dust blocking in the grinding process can be effectively solved, the heat dissipation performance, the abrasive bonding strength and the chip removal efficiency are remarkably improved, and the abrasive material is suitable for the high-load long-time grinding working condition.

The invention provides a short-range direct filter membrane for removing mine water suspended solids, a preparation method and a system, the preparation method is used for preparing printing slurry, and the printing slurry comprises hydrophilic light-cured resin and a nano hydrophilic modifier with positive electricity; carrying out integrated 3D printing by utilizing the printing slurry according to the designed model to generate a green filter membrane; the green filter membrane is provided with a plurality of vertical main pore channels penetrating through the green filter membrane; the green filter membrane is sequentially subjected to cleaning, curing post-treatment and plasma surface modification treatment, and the short-range direct filter membrane is obtained; the surface Zeta potential of the short-range direct filtration membrane is 5-15mV, and the contact angle between the short-range direct filtration membrane and water is less than 10 degrees. The invention solves the problems of easy pollution, low flux, complex pretreatment and the like of the traditional filter membrane, is suitable for short-range direct filtration treatment of high-suspended-matter mine water (less than or equal to 2000mg / L), and realizes low-cost, efficient and energy-saving operation.

The invention relates to a high-strength MBR (Membrane Biological Reactor) ultrafiltration membrane, a preparation system and method thereof and a spinning solution. According to the invention, a composite nano reinforcing agent composed of modified silicon dioxide and graphene oxide is innovatively introduced into a membrane solution. The two nano materials form a rigid-flexible synergistic enhanced network in a polymer matrix; the graphene oxide is used as a two-dimensional nanosheet layer, so that stress is effectively transmitted and dispersed; and the silicon dioxide nanoparticles are used as stress concentration points to prevent the propagation of microcracks. Meanwhile, the invention provides a set of composite reinforcement solution. The core of the scheme is that a polyester / polyamide high-density composite braided tube subjected to plasma surface treatment is adopted as a mechanical skeleton of the membrane, and main operation stress is borne from the macroscopic scale. The multi-stage synergistic enhancement mechanism from the macroscopic braided tube to the nanoscale endows the membrane filament with mechanical strength far beyond the conventional level and fatigue and filament breaking resistance.

This application relates to the field of battery manufacturing technology and discloses an electrode plasma treatment apparatus and electrode processing equipment. The electrode plasma treatment apparatus includes a housing, an unwinding mechanism, a winding mechanism, at least one adjusting roller, and at least one plasma generator. The plasma generator includes a nozzle for surface treatment of the electrode sheets laid on the adjusting roller. In the technical solution of this application embodiment, electrode vibration can be reduced, making the plasma surface treatment of the electrode sheets more uniform, improving the surface treatment effect of the electrode sheets, and ensuring that the surface quality of the electrode sheets meets the requirements.