322 results about "Plasma surface" patented technology

The invention relates to the technical field of cable materials, in particular to a flame-retardant efficient cross-linked polyolefin cable body and a preparation method thereof. The cable body comprises a polyolefin matrix, 2, 4-dihydroxy-6-methyl benzamide, an intumescent flame retardant, dicumyl peroxide, an antioxidant, a light stabilizer and a lubricant, wherein the polyolefin matrix is subjected to synergistic modification by phosphorus-nitrogen heterocyclic silane-plasma. The preparation method of the polyolefin matrix synergistically modified by phosphorus-nitrogen heterocyclic silane-plasma comprises the following steps: performing grafting reaction on polyolefin resin and phosphorus-nitrogen heterocyclic silane under the action of an initiator, and performing plasma surface treatment to endow the material with dual active sites. The preparation method comprises the following steps: melting and granulating a polyolefin matrix subjected to phosphorus-nitrogen heterocyclic silane-plasma synergistic modification, small organic molecules and auxiliaries, and performing extrusion molding under a crosslinking condition to obtain a cable body. The material disclosed by the invention has comprehensive advantages in flame-retardant efficiency, crosslinking degree and mechanical property, and is suitable for manufacturing high-safety power cables.

The invention discloses a preparation process of open-cell organic silicon foam, and aims to solve the problems of non-uniform pore structure, low aperture ratio and difficulty in performance balance in the prior art. The process comprises the following steps: optimizing parameters through bubble nucleation, pore connectivity and a mechanical property model; preparing a composite raw material containing polysiloxane, a fluorine-containing monomer, nano silicon dioxide and hollow microspheres; dynamic pressure circulation and ultrasonic-assisted pre-foaming are adopted; performing staged gradient foaming and curing; and carrying out vacuum post-treatment and plasma surface modification. According to the invention, accurate regulation and control of multi-scale pores are realized, air permeability, mechanical properties and hydrophilicity are significantly improved, heat insulation and high temperature resistance are accidentally improved, process efficiency is improved, by-product emission is reduced, and the method is suitable for the fields of aerospace, filtration and biomedicine.

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 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 medium-entropy (Zr, Ta, W) C coating and a preparation method and application thereof. The medium-entropy (Zr, Ta, W) C gradient coating is prepared on the surface of the titanium alloy or the iron-based alloy through the double-layer glow plasma surface metallurgy technology, and gradient temperature annealing treatment is conducted. The preparation method has the specific advantages that (1) the prepared coating is of a continuous gradient structure, good interface metallurgical bonding is formed between the coating and a matrix, the bonding force of the coating is not lower than 50 N, and the coating is not prone to cracking and stripping in the service process due to the high bonding strength; and (2) the hardness of the medium-entropy (Zr, Ta, W) C coating prepared by the method is 25-30 GPa, the fracture toughness is 4.0-5.0 MPa * m < 1 / 2 >, and the coating system has balanced hardness and toughness, so that the coating is endowed with excellent wear resistance. The prepared coating has excellent wear resistance and antifriction performance, and has wide application prospects in the field of wear-resistant protective coatings.

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 lime manufacturing, and provides a process and a system for manufacturing high-purity lime. The process comprises the steps of raw material pretreatment, plasma surface pretreatment, segmented atmosphere calcination, sound wave reinforced mass transfer, heat energy comprehensive utilization and intelligent control, rapid cooling, flue gas treatment and finished product packaging. The system comprises a raw material pretreatment unit, a plasma surface pretreatment unit, a multi-section gradient atmosphere calcining kiln, a sound wave reinforced mass transfer system, a heat energy comprehensive utilization and intelligent control system, a carbon dioxide capturing and recycling unit and a finished product cooling and packaging unit. Through raw material deep purification, surface activation treatment, gradient calcination and atmosphere accurate control, sound wave mass transfer reinforcement, intelligent optimization regulation and control, rapid cooling and flue gas purification and resource recovery, the purity and the reaction activity of a calcium oxide product are synergistically improved, and the production energy consumption and pollutant emission are remarkably reduced; and high-efficiency, clean and resource production of the high-purity lime is realized.

The invention relates to the technical field of surface treatment, discloses a dust-free cleaning process for an AL meltallizing coating, and aims to overcome the defects of an existing cleaning process for the AL meltallizing coating in the aspects of removing particles in micro-pores and passivating tips prone to falling off. The process comprises the steps of ultrapure water pre-cleaning, supercritical fluid deep cleaning, plasma surface modification, high-purity inert gas microjet purging and high-temperature vacuum degassing and surface stabilization. By the adoption of the technical scheme, the cleanliness of the AL meltallizing coating can be remarkably improved, particles and organic pollutants in micro-pores can be thoroughly removed, tips prone to falling off are passivated, secondary pollution is avoided, the cleaning period is shortened, and the production yield of semiconductors and liquid crystal panel products and the equipment utilization rate are increased.

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 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 invention discloses a preparation method of graphite for a large semiconductor, and belongs to the technical field of graphite for semiconductors. The method comprises the steps of raw material pretreatment, forming process, graphitization, purification and post-treatment, wherein needle coke and a carbon-based functional material are mixed, and a carbon-based dispersing agent is added under the action of a gradient magnetic field for dispersion to obtain a pretreated raw material; filling the mixture into a carbon-based mold, carrying out cold isostatic pressing molding through cooperation of gradient pressure and a gradient magnetic field, and absorbing stress through a carbon-based buffer material to obtain a molded green body; placing the green body in a large graphitization furnace, regulating and controlling a magnetic field in sections, introducing mixed gas, strengthening the reaction through a carbon-based catalytic material, and prolonging the reaction time of a core part by utilizing gas backflow to complete graphitization and purification; and finally, carrying out plasma surface activation, boron nitride coating deposition and annealing treatment to obtain a graphite product for a large semiconductor. The problems that the purity of a large green body is out of control, the impurity removal gradient difference is large and the stress is large can be effectively solved, and the product performance is excellent.

The invention relates to the technical field of high-frequency transmission cables, in particular to a high-stable-phase cable preparation technology based on a graphene PTFE composite wrapping tape, and the technology comprises the steps: controlling a traction device to pull a to-be-wrapped body to a corresponding wrapping region; the wrapping tapes of the corresponding layers are correspondingly conveyed to the corresponding wrapping positions of the wrapping area respectively; respectively obtaining the thickness of a plurality of detection point positions of the high-stable-phase test cable and the width of a wrapping tape overlapping area so as to determine an expansion area; adjusting the distance between the guide wheels according to the overlapping proportion of the overlapping area and the expansion area of the wrapping tape, or adjusting the distance between the guide wheels and the to-be-wrapped body according to the expansion length, and adjusting the wrapping angle according to the area proportion of the layered expansion area; and sequentially performing plasma surface treatment and staged hot-pressing curing to output a finished product of the high-stable-phase cable. According to the invention, the accuracy of the wrapping process and the heat control capability are 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 utility model relates to the technical field of shield cutter production and processing, in particular to a plasma cladding diamond particle planting inserted shield cutter ring which comprises a cutter ring body, a plasma cladding wear-resistant layer, diamond particles planted in the wear-resistant layer and hard alloy ball nails. A ball nail inlaying groove is machined in the outer circle position of the cutter ring body, and the lower portion of the hard alloy ball nail is inlaid in the ball nail inlaying groove in the outer circle of the cutter ring body. Wear-resistant layer grooves are formed in the cutter ring body between the adjacent ball nail embedding grooves, and wear-resistant layers are cladded in the wear-resistant layer grooves; diamond particles are planted when the wear-resistant layer is subjected to plasma welding, so that the wear-resistant layer has certain toughness, the wear resistance of the diamond particles is utilized, and the service life of the wear-resistant layer is prolonged; meanwhile, the wear-resistant layer groove is additionally formed between the two hard alloy ball nails of the cutter ring body, so that the wear resistance of the cutter ring body is improved.

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.

1. Name of the product in this design: Plasma Surface Treatment Machine. 2. Purpose of this design: For plasma treatment of material surfaces. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

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.

This application proposes a method, apparatus, device, and storage medium for recommending wafer surface treatment processes, relating to the field of semiconductor manufacturing technology. The method includes: acquiring the surface physicochemical characteristic parameters of a target wafer and preprocessing these parameters to obtain target physicochemical characteristic parameters; inputting the target physicochemical characteristic parameters into a pre-trained single-hidden-layer neural network model to obtain preliminary recommended parameters for each process parameter of the target wafer; concatenating the target physicochemical characteristic parameters and the preliminary recommended parameters and inputting them together into a Transformer encoder based on an attention mechanism, utilizing a multi-head self-attention mechanism to model the complex coupling relationship between input features, and extracting deep representations to output the target recommended parameters. This method enables a nonlinear mapping between the surface physicochemical characteristic parameters of the target wafer and process parameters, thereby achieving efficient, accurate, and automated recommendation of wafer plasma surface treatment process parameters.

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.

The invention relates to the technical field of non-woven fabric coloring, in particular to a non-woven fabric coloring method which comprises the following steps: step 1, pre-treating non-woven fabric to enhance binding force; 2, coloring by combining an electrospinning method with a concave-convex structure; step 3, spraying step by step; 4, directional texture design and concave-convex mold auxiliary forming are carried out; and 5, environment-friendly low-temperature curing and follow-up treatment are conducted. The non-woven fabric is pretreated through plasma surface activation and ultrasonic alternate cleaning to enhance the binding force, and through nanofiber composite spraying, a mixed solution of a high-molecular compound and a coloring agent is sprayed through an electrospinning method, and a fiber layer with a concave-convex shape is formed on the surface of a collecting device; finally, a low-temperature curing technology is adopted, heating at the temperature of 40-60 DEG C or air drying at the room temperature is adopted, energy consumption is reduced, non-chemical structural colors are used for replacing, traditional acidic and disperse dyes are completely abandoned, colors are generated through physical arrangement of colloidal microspheres, waste water pollution is avoided, and therefore the method is good in process effect and high in environmental friendliness.

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.

The present invention belongs to the field of immunochromatographic detection technology, and specifically relates to a colorimetric immunochromatographic detection probe, a test strip, a detection method and an application. The detection probe is a magnetic mesoporous metal nanomaterial probe, which includes a magnetic material, a mesoporous silicon material, a dopamine hydrochloride flexible support material and precious metal nanoparticles. The mesoporous silicon material is located between the core of the magnetic material and the dopamine hydrochloride flexible support material, and the precious metal nanoparticles are adsorbed on the surface and pores of the mesoporous silicon material. The surface of the dopamine hydrochloride flexible support and the precious metal nanoparticles is enriched with detection antibodies. The precious metal nanoparticles coated on the colorimetric immunochromatographic detection probe of the present invention can quickly trigger the gold plasma surface resonance effect, so that Au 3+ The reduced gold particles are deposited on the chromatographic test strip, thereby enhancing the colorimetric intensity. Notably, adjusting the pH of the hydroxylamine solution effectively reduces false-positive interference caused by self-nucleation. Therefore, this immunoassay method enables rapid, ultrasensitive, and visual detection of biomarkers.

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.