208 results about "Ion release" patented technology

The invention relates to the technical field of air purification, in particular to a negative oxygen ion dynamic air purification strategy and system.The negative oxygen ion dynamic air purification strategy comprises the following steps that on the basis of linkage of particulate matter concentration and multiple environmental parameters, influences of airflow, pressure, temperature and humidity and personnel flow on particulate matter distribution are analyzed, and formaldehyde and harmful gas parameter fluctuation trends are combined; pollution changes and equipment response grades are judged, the release path, frequency and power of the negative oxygen ion generator are adjusted, and ion release adjustment parameters are output. Data such as multi-element particulate matter concentration, airflow state, environmental pressure, temperature and humidity, personnel flow and the like cooperatively participate in monitoring and judgment, particulate matter grading characteristics are linked in real time through environmental dynamic factors, fluctuation trends of multiple pollutants in air are jointly calculated, high-risk change stages are actively recognized, purification response grades are dynamically output, and the purification effect is improved. The ion release direction and power are adjusted in an automatic linkage mode, the purification response changes along with space pollution hot spots, and diversified pollution distribution scenes are effectively covered.

The invention relates to the technical field of ceramic glaze water, in particular to ceramic glaze water capable of continuously releasing negative ions based on a rare earth material and a preparation method of the ceramic glaze water. Comprising a negative ion material, sodium polystyrenesulfonate, an immobilized bacterium preparation, carbon nanotube modified graphene oxide, turbo stone, modified sepiolite, nano-zinc oxide, sodium hexametasilicate, polyethylene glycol, a composite antioxidant, a coalescing agent, a slow-release carrier and deionized water. The negative ion material is formed by mixing low-radioactivity commercial rare earth powder, tourmaline and opal according to the mass ratio of (3-4): (4-5): 1. According to the invention, the preparation cost of the glaze water is reduced and the production efficiency is improved by optimizing the composition and compounding mode of the negative ion material, enhancing the stability of the bacterial preparation and simplifying the preparation process, meanwhile, the negative ion release durability, the ceramic surface adhesive force and the antibacterial property are remarkably enhanced, and the requirements of industrial production and practical application are met.

The invention relates to the technical field of wastewater treatment and resource recovery, and discloses an organophosphorus degradation and recovery system based on double-cathode electro-Fenton reaction, comprising: an electrolytic tank for accommodating organophosphorus wastewater to be treated; the anode is arranged in the electrolytic tank and is electrically connected with an anode of a power supply; the oxidizing agent generating cathode is arranged in the electrolytic tank and is used for generating hydrogen peroxide in situ under a power-on condition; the metal reduction cathode is arranged in the electrolytic tank and is used for adsorbing and reducing ferric ions; the metal source is composed of zero-valent iron or iron alloy, is not directly and electrically connected with the power source, and is arranged in an electric field acting area established by the anode and the at least one cathode. Through the design of inductive slow-release iron supply and double-cathode collaborative circulation, a series of problems of uncontrollable iron ion release, high iron sludge yield, low catalyst utilization efficiency, difficulty in resource recovery and the like in the traditional electro-Fenton technology are effectively solved.

The invention discloses a polyaryletherketone composite implant material and a preparation method and application thereof, and belongs to the technical field of medical materials.The preparation method of the polyaryletherketone composite implant material comprises the following steps that a carbon fiber reinforced polyaryletherketone substrate with the surface provided with a groove structure and conductivity is prepared; based on a precipitation method, a calcium compound, a magnesium compound and a phosphoric acid aqueous solution are used for preparing white calcium stone; the preparation method comprises the following steps: carrying out surface modification on the white calcium phosphate by utilizing polydopamine, so as to obtain modified white calcium phosphate; adding the modified white calcium phosphate and a degradable piezoelectric polymer into a solvent, and mixing to obtain a mixed solution; and coating a carbon fiber reinforced polyaryletherketone substrate with the mixed solution, and performing drying and annealing treatment to form a coating, thereby obtaining the polyaryletherketone composite implant material. According to the invention, the degradable piezoelectric composite coating doped with the white phosphorus calcium stone, which has piezoelectric characteristics and ion release capability, is constructed, so that double biomimetic effects of an electric signal and a chemical signal in a bone healing microenvironment are realized.

The invention relates to the technical field of medical cosmetology, in particular to a porous hollow glass bead capable of slowly releasing collagen and application of the porous hollow glass bead. The porous hollow glass bead capable of slowly releasing the collagen comprises a porous hollow glass bead body, the outer wall of the porous hollow glass bead body is provided with a pore channel structure penetrating through the exterior and an inner cavity of the hollow glass bead body, and the pore channel and the inner cavity of the porous hollow glass bead body are filled with collagen gel. The compressive strength of the hollow glass beads is utilized to improve the mechanical supporting effect, the collagen gel is subjected to catalytic decomposition under the action of collagenase in a body so as to achieve the slow-release effect, the outer walls of the hollow glass beads slow down the reaction time through physical isolation, and then the slow-release time is prolonged; meanwhile, ions such as Si and Ca released by the hollow glass beads can promote cells to secrete collagen, the biological activity is improved, and the three beneficial effects of physical support, collagen slow release and biological safety are achieved.

The invention relates to the technical field of automobile essence preparation, and particularly discloses automobile essence capable of removing formaldehyde and releasing anions and a preparation method of the automobile essence. Comprising the following raw materials in parts by weight: 500-600 parts of deionized water, 18-24 parts of a negative ion release enhancing component, 12-20 parts of an aldehyde removing component, 30-40 parts of absolute ethyl alcohol, 8-14 parts of a dispersing agent, 14-18 parts of phenoxyethanol, 22-26 parts of an initiator solution and 6-10 parts of citral. A negative ion release enhancing component and a formaldehyde removal component are added, the negative ion release enhancing component is prepared by modifying core-shell particles with a silane coupling agent, the outer layer of each core-shell particle is of a porous titanium dioxide structure, the inner core of each core-shell particle is modified electrical powder, and the formaldehyde removal component is prepared by carrying out a ring-opening esterification reaction on sodium alginate and allyl glycidyl ether, so that the formaldehyde removal effect is improved. And then carrying out chemical cross-linking with hydroxypropyl acrylate and methacrylic acid, thereby coordinating and enhancing the formaldehyde removal capability, the anion release capability and the antibacterial effect.

The invention relates to the field of building materials, in particular to a preparation method of high-strength ceramsite, which comprises the following steps: uniformly mixing brick powder, Bayer process red mud, ardealite and titanium gypsum to obtain mixed powder, adding a binder, uniformly mixing to prepare raw nodules, sequentially forming a transition layer and a shell layer on the surfaces of the raw nodules, drying, sintering and cooling to obtain the high-strength ceramsite. The prepared ceramsite is low in water absorption rate and excellent in mechanical strength, the core-shell structure can effectively inhibit release of chloride ions, solid waste is fully utilized, environmental pressure is relieved, waste is turned into wealth, two purposes are achieved, and the ceramsite has certain social, economic and ecological benefits.

The embodiment of the invention provides a self-recovery method for the ion release capacity of a high-voltage electrostatic module, electronic equipment, a storage medium and a program product, and the method comprises the steps: outputting a self-recovery control signal corresponding to a target time threshold value under the condition that the cumulative operation time length of the high-voltage electrostatic module reaches the target time threshold value, the high-voltage electrostatic module is controlled to execute self-recovery operation; and when it is determined that the accumulated purification amount of the high-voltage electrostatic module reaches a target purification amount threshold value, outputting a self-recovery control signal corresponding to the target purification amount threshold value so as to control the high-voltage electrostatic module to execute the self-recovery operation. The embodiment of the invention provides a dual guarantee mechanism self-adaptive to different use scenes (light-load stable operation and heavy-load accelerated attenuation), establishes an active monitoring and recovery capability for performance attenuation of the high-voltage electrostatic module, and solves the problem that the purification efficiency is reduced due to the fact that the ion release capability is reduced after the module is used for a long time.

The present application relates to a kind of sea sand chloride solidifying agent and its application method, the solidifying agent includes solidifying agent A and solidifying agent B;The solidifying agent A is proportioned according to the raw material of weight parts as follows: modified hydrotalcite 2~5 parts, ultrafine silica powder 0.05~0.2 parts, water 30~120 parts;The solidifying agent B is proportioned according to the raw material of weight parts as follows: metakaolin 1~4 parts, calcium hydroxide 0.1~0.3 parts, water 45~180 parts.The present application is attached to the surface of sea sand by modified hydrotalcite with ion adsorption effect and forms inner solid layer, can effectively absorb the chloride ion released by sea sand;While using calcium hydroxide to excite metakaolin with sheet shape and form stable outer solid layer, can effectively prevent the shedding of inner solid layer material;The generated hydrated calcium silicate and hydrated calcium aluminate gel can also absorb the chloride ion solidified from the escape of inner solid layer, further improve the chloride ion solidification effect.

This invention provides a long-lasting antibacterial spray, its preparation method, and its application. The antibacterial spray comprises a polyphenol adhesion component, metal ions, auxiliary polyphenols, a network stabilizer, and water. The metal ions form a dynamically reversible coordination network with the polyphenol adhesion component; the metal ions include silver ions and zinc ions. In this invention, the silver nanoparticles may undergo surface oxidation or coordination dissociation processes in the polyphenol network environment, thus serving as a potential source of supplementary silver ions, contributing to a smoother ion release behavior and achieving long-lasting antibacterial action through ion-nano synergy. This invention utilizes the synergistic effect of silver and zinc ions to improve the physical stability of the system. By introducing a small amount of silver nanoparticles as "solid-phase nodes" in the polyphenol network, the structural stability and resistance to mechanical damage of the antibacterial system are improved without significantly increasing the total silver release.

The utility model belongs to the technical field of safety production, and particularly relates to a safe anti-explosion anti-static workbench which comprises an anti-static table top, a plurality of supporting table legs are fixedly connected to the lower side of the anti-static table top, the upper surface of the anti-static table top is sequentially divided into a plurality of working areas from left to right, and an ion wind bar is further fixedly connected to the anti-static table top. And a plurality of ion release mechanisms are fixedly connected to the ion wind bar and are used for releasing ions to the plurality of working areas. According to the utility model, through the dual anti-static measures that the anti-static table top and the ion wind bar release ions, static accumulation is reduced, so that electric sparks caused by electrostatic discharge are avoided, the possibility of explosion on the anti-static table top and in the surrounding space of the anti-static table top is reduced, a relatively safe working environment can be provided for working personnel, and the working efficiency is improved. Explosion accidents caused by static electricity and damage to electronic component products are prevented.

The invention discloses a high-performance talc porcelain material and a preparation method thereof. In order to solve the problems of contradiction between strength and light transmission, high sintering energy consumption and the like of traditional talc porcelain, black talc and calcined talc are adopted as a basic framework, and 2%-5% of Wulan tea spar and 1%-3% of nano aluminum powder are added to realize synergistic enhancement. By optimizing ball milling, vacuum pugging and low-temperature sintering processes (1250-1280 DEG C), the bending strength of the product is larger than or equal to 145 MPa, the light transmittance of the product with the thickness being 4.5 mm is larger than 5.5%, the antibacterial rate is larger than 99.5%, and the anion release amount is larger than 3000 / cm < 3 >. According to the scheme, the sintering temperature is reduced by about 70-100 DEG C, the energy consumption is reduced by over 10%, and the method is suitable for the fields of electronics, medical treatment and the like.

The application discloses a positive electrode lithium supplementing agent, a positive electrode tab, a secondary battery and an electric device, and belongs to the technical field of batteries. The positive electrode lithium supplementing agent comprises lithium phytate and a lithium supplementing agent, and the lithium supplementing agent comprises at least one of Li5FeO4, Li6CoO4 and Li2NiO2. The lithium phytate and the lithium supplementing agent are combined as the positive electrode lithium supplementing agent. The lithium phytate and the lithium supplementing agent jointly act on active oxygen and metal ions released by the lithium supplementing agent, reduce side reactions of electrolyte, maintain electrochemical stability of the system under high pressure, completely release lithium in a high-voltage lithium cobaltate system, effectively improve the release amount of lithium sources, sufficiently supplement lithium consumption of SEI film forming reactions of a negative electrode, promote embedding and discharging processes of lithium ions in a positive electrode material, improve swelling of the secondary battery, and effectively improve the cycle life of the secondary battery.

The present disclosure provides an air disinfection apparatus for use with an air conditioning system configured to create an airflow. The air disinfection apparatus comprises a hollow housing for conveying said airflow therethrough between an air inlet and an opposite air outlet determining an airflow direction; a screen forming a non-ionizing electrode extending along a screen longitudinal extension axis, said non-ionizing electrode being mounted in the housing between the air inlet and the air outlet so that a screen surface is tangential to the airflow direction; a wire forming an ionizing electrode, said wire being suspended in said hollow housing between the air inlet and the air outlet and having a wire axis aligned with the screen longitudinal extension axis so as to face said screen surface; terminals electrically connected to the wire and screen for coupling thereto high and low voltage outputs of a high voltage generator of sufficient voltage to create a corona discharge zone across the airflow between the wire and the screen; wherein the screen includes an ion receiver positioned downstream of the corona discharge zone relative to the airflow direction, said ion receiver being dimensioned to cause ions produced in the corona discharge zone to be attracted so as to prevent release of ions outside of the air disinfection apparatus.

The invention discloses a warmer intelligent regulation and control system and method based on variable frequency ion group concentration, and relates to the technical field of variable frequency intelligent regulation and control. A stable working interval generation module; and a multi-objective optimization and execution module. Environmental parameters and voltage and current sampling signals are periodically collected, all collected data are subjected to preprocessing and demand evaluation, the discharge stability is judged according to the current environmental parameters and the discharge state, a safe working interval is fitted in real time, and the comprehensive comfort of heating and purification is dynamically optimized in the safe working interval. Each target parameter is intelligently distributed to carry out multi-target optimization, parameter adjustment is cooperatively controlled through a layered structure, and an optimal parameter scheduling strategy is formulated and output, so that the problems that in the prior art, due to sudden change of high-voltage output and ion release amount during switching of different working gears, linearly controllable ion output cannot be realized, and the efficiency is high are effectively solved. And the air purification effect is not enough.

This invention relates to a composite mineral-modified polyethylene agricultural mulch film and its preparation method. The agricultural mulch film comprises a polyethylene matrix resin and a composite mineral filler dispersed therein. The composite mineral filler is composed of 27%~33% wollastonite, 18%~22% attapulgite, 27%~33% tourmaline, and 18%~22% hexagonalite, and undergoes electromagnetic oscillation physical activation treatment to achieve a specific surface area ≥250m² / g, a particle size ≤2μm, and the formation of hydroxyl active sites on the surface. This invention also discloses the preparation method and its dual functions of degradation and soil improvement. The agricultural mulch film has a tensile strength ≥18MPa, an elongation at break ≥400%, a biodegradation rate ≥70% after 6 months, a far-infrared emissivity ≥0.90, and a negative ion release ≥1200 ions / cm³. After 6~9 months of field use, it disintegrates, and the residual minerals continuously regulate soil pH, release trace elements, and improve the aggregate structure, achieving a virtuous cycle of mulch film degradation and soil improvement.

The application provides a wear-resistant and antifouling propeller and a preparation method thereof, and belongs to the field of coating. The propeller surface is provided with a wear-resistant and antifouling iron-based amorphous alloy coating formed by thermal spraying of iron-based amorphous alloy powder. The wear-resistant and antifouling iron-based amorphous alloy coating has an antifouling ion release channel. The antifouling ion release channel is formed by the communication of a plating layer metal plated on the surface of the iron-based amorphous alloy powder, and the antifouling ion release channel is in a three-dimensional and stereoscopic communication state. The melting point of the plating layer metal on the surface of the iron-based amorphous alloy powder is lower than the melting point of the iron-based amorphous alloy powder, and the preferred plating layer metal is Cu. The amorphous coating is prepared on the surface of the propeller by using the copper-coated amorphous powder as raw material and ultrasonic flame spraying, and the amorphous coating contains an antifouling ion three-dimensional transmission channel. The amorphous coating has excellent wear resistance and antifouling performance. The method has a simple process, can be practically applied in industry, and has a good application prospect in the field of high-erosion marine antifouling and corrosion prevention.

The invention discloses a preparation method and application of a graphene anion water-based coating. The water-based paint comprises water-based film-forming resin, a water-based curing agent, a graphene negative ion composite dispersion phase, a structure stabilizing additive, a film-forming additive and deionized water, wherein the graphene negative ion composite dispersion phase is prepared by pre-dispersing functionalized graphene and a negative ion activating solution. The negative ion activating solution enables negative ion functional components to keep good dispersion stability and activation state in a water-based system. The graphene and the negative ion activating solution are synergistically introduced into a water-based film forming system, so that stable introduction of a negative ion function can be realized on the premise that the film forming performance of the coating is not influenced. The prepared water-based paint can realize continuous negative ion release under the conditions of normal temperature and no external electric field, has good storage stability, film forming uniformity, adhesive force and water resistance, and is suitable for functional coating of the surfaces of plates, wooden products, artificial boards, building substrates and the like.

The invention relates to the technical field of antiviral coatings, and discloses an antiviral coating capable of continuously releasing negative ions and a preparation method thereof, and the method comprises the following steps: raw material preparation, premixing treatment, functional material addition, assistant blending and post-treatment. The bio-based resin is compounded with the negative ion release material, the nano antiviral material and the aldehyde removal catalyst under specific process conditions, a continuous phase formed by the bio-based resin provides a stable carrier for the functional material, so that the functional material can be uniformly dispersed and firmly combined, and the negative ion release material is protected by a resin system, so that the functional material is more stable and reliable. And the nano antiviral material and the formaldehyde removal catalyst have a synergistic effect on the surface and the interior of the coating to jointly construct a long-acting antiviral and formaldehyde purification functional layer, so that the durability and the stability of the multifunctionality of the coating are realized.

The invention discloses a preparation method of an anti-freezing asphalt mixture. The preparation method comprises the following steps: S1, preparing and pretreating raw materials; s2, preparing a core material solution; s3, forming a wall material solution; s4, mixing the core material solution and the wall material solution according to a ratio of 4: 1, drying and curing to prepare an anti-freezing agent; s5, preparing an asphalt mixture, namely doping the anti-freezing agent prepared in the step S4 into the asphalt mixture according to a replacement rate of 30-60% to prepare a sample; and S6, detecting the characteristics of the sample through a freeze-thaw cycle experiment, and producing finished products in batches after the sample is detected to be qualified. When raw materials for preparing the anti-freezing agent are selected, polyethylene glycol is adopted as a slow-release base, trisodium phosphate is adopted as a corrosion inhibition base, through the synergistic effect of the slow-release base and the corrosion inhibition base, polyethylene glycol is utilized to form a hydrophobic shell to delay release of chloride ions, trisodium phosphate is hydrolyzed to generate a calcium phosphate passive film to inhibit corrosion of steel bars, and the corrosion resistance of the steel bars is improved. The two synergistically prolong the chloride ion release period and reduce the corrosion rate of the carbon steel.

1. The name of the design product: the negative ion releasing device of the combined Chinese herbal medicine. 2. The use of the design product: the device for releasing negative ions by combining Chinese herbal medicine. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: front view.

According to the method for preparing the battery-grade iron phosphate through magnetite and reduction leaching, hydroquinone and ascorbic acid are added into the leaching agent phosphoric acid aqueous solution to serve as a reducing agent together, on one hand, hydroquinone and ascorbic acid have high reducibility, and the phenomenon that the iron source is damaged at the moment when the iron source makes contact with the leaching agent can be avoided; fe < 2 + > released by the magnetite is oxidized into Fe < 3 + > by residual oxygen in the liquid phase, and the reaction path of oxidizing Fe < 2 + > into Fe < 3 + > in the liquid phase is thoroughly blocked, so that the reaction of the elemental iron and the target Fe < 3 + > is promoted; and on the other hand, under the acidic condition, hydroquinone and ascorbic acid can form complexes [Fe (C6H4 (OH) 2)] < 2 + > and [Fe (C6H7O6)] < 2 + > with Fe < 2 + > in a leaching system respectively, the concentration of Fe < 2 + > in a liquid phase is reduced, reaction balance forward movement of ferrous ions released by magnetite is promoted, and the leaching rate of the iron element is greatly increased.

The application discloses a kind of polyaryletherketone composite implant materials and preparation method and application, and belongs to medical material technical field, wherein, the preparation method of the polyaryletherketone composite implant material includes the following steps: preparation surface has recess structure and the carbon fiber reinforced polyaryletherketone base of conductivity;Based on precipitation method, white brushite is prepared using calcium compound, magnesium compound and phosphoric acid aqueous solution;White brushite is surface modified using polydopamine, to obtain modified white brushite;Modified white brushite is mixed with degradable piezoelectric polymer into solvent, to obtain mixed solution;Mixed solution is coated on carbon fiber reinforced polyaryletherketone base, after drying, annealing treatment, form coating, to obtain polyaryletherketone composite implant material.The application constructs white brushite doped degradable piezoelectric composite coating with piezoelectric characteristics and ion release capacity simultaneously, realizes the dual bionics of electric signal and chemical signal in bone healing microenvironment.

The invention relates to a multifunctional bio-based polylactic acid fabric and a preparation method thereof, and belongs to the technical field of polylactic acid fabrics. The preparation method comprises the following steps: S1, adding polylactic acid, a pore-foaming agent and nano negative ion powder into an organic solvent, stirring at the temperature of 90-110 DEG C and at the speed of 1200-1800 rpm for 0.5-1.5 h, and then cooling to 65-75 DEG C to obtain a precursor solution; s2, the surface of a polylactic acid fabric is coated with the precursor solution, then the polylactic acid fabric coated with the precursor solution is sequentially soaked in a hot water bath and a cold water bath in an inverted buckling mode for phase separation, and composite polylactic acid fabric is obtained through drying; s3, the composite polylactic acid fabric is sequentially soaked in an acid solution and an alkali solution for soaking treatment, and the multifunctional bio-based polylactic acid fabric is obtained after drying. Through the collaborative design of introduction of the nanometer negative ion powder, an acid-base regulation porous structure and the like, the synergistic interaction of cooling and negative ion release is realized.

The present application relates to the technical field of tailings treatment, and particularly relates to a cementing agent for clay tailings cemented filling and a use method thereof, which comprises, in terms of weight fractions, 20-35 parts of fast-hardening sulphoaluminate cement, 8-15 parts of silica fume, 30-60 parts of activated slag powder, 10-20 parts of limestone powder, 5-15 parts of desulfurization gypsum, 6-10 parts of nano SiO2 / Al2O3 composite sol and 30-40 parts of magnesium phosphate-red mud activated microspheres; ions released by the magnesium phosphate-red mud activated microspheres destroy the interlayer hydrogen bonds of kaolinite, reduce the adsorption of free water by clay, cooperate with the fast-hardening sulphoaluminate cement to rapidly form a skeleton, solve the problem of insufficient hydration caused by the imbalance of the water-binder ratio of the cementing material, and meanwhile, the nano SiO2 / Al2O3 composite sol penetrates the clay gap by virtue of the nanoscale size and positive charge characteristics, and in combination with the silica fume and the slag powder, generates a gel in situ on the surface of the clay and constructs a cross-scale bonding network, so that the cementing material and the tailings particles are effectively bonded, the high-clay tailings are efficiently cemented, and the performance of the filling body is improved.

This invention belongs to the field of condiment technology and discloses a low-sodium salt comprising 75-82 parts by weight of sodium chloride, 15-22 parts by weight of potassium chloride, and 0.8-1.5 parts by weight of konjac gum. It may also contain 0.2-0.4 parts by weight of sodium citrate, 0.3-0.6 parts by weight of magnesium sulfate, and 0.7-1.2 parts by weight of polydextrose. The invention also discloses a method for preparing this low-sodium salt, which involves dissolving sodium chloride, potassium chloride, konjac gum, and appropriate functional additives in a specific ratio, followed by decolorization, filtration, drying, and sieving. The preparation method of this invention is simple and suitable for continuous industrial production. The resulting product exhibits low sodium content, rapid ion release, low moisture absorption and anti-caking properties, and no bitter taste.

The embodiment of the invention relates to the technical field of heavy anti-corrosion coatings, and discloses a marine facility anti-corrosion protective layer regulation and control method adapting to a strong salt mist environment, and the method comprises the following steps: preparing a self-activation intermediate paint, and applying the self-activation intermediate paint between a primer and a finish paint to form a composite protective layer; the core of the self-activation intermediate paint is that a main agent of the self-activation intermediate paint contains a dual-trigger mineralization precursor, and the precursor is composed of BF4-loaded hydrophobic modified zeolite and zinc phosphate coated water glass particles; when the coating is damaged, the corrosion microenvironment of the damaged area can cooperatively trigger the zeolite to release BF4 <-> to buffer the pH value, and meanwhile, the coated water glass particles are triggered to be dissolved and release silicate ions; the released silicate ions and positive ions in the environment are subjected to in-situ reaction to generate mineralized products, and a damaged area is blocked. The method can actively inhibit corrosion expansion and cathodic disbonding after the coating is damaged, and the long-term reliability and the service life of the protective layer are remarkably improved.

The application relates to a tourmaline modified Lyocell fiber with a high-efficiency negative ion release function and preparation and application thereof. A tourmaline powder / NMMO dispersion liquid with uniform distribution and stability is prepared in a wet ball milling mode by taking NMMO aqueous solution as a dispersion medium for spinning the Lyocell fiber, and the whole process is simple and environment-friendly in combination with a conventional Lyocell process. The prepared tourmaline modified Lyocell fiber has the high-efficiency negative ion release function.

The invention provides a triple signal amplification electrochemical method for detecting a porcine reproductive and respiratory syndrome virus NADC30-like strain. Firstly, the surface of a gold electrode is modified with a hairpin signal probe H1, when a target sequence appears, the hairpin H1 is opened, a sequence capable of triggering a hybridization chain reaction (HCR) is exposed, long dsDNA is formed, and first signal amplification is achieved. Then, under the catalysis of terminal deoxynucleotidyl transferase (TdT), a large amount of polythymine (PolyT) extends from 3'terminal hydroxyl groups of H2 and H3 fragments, and second signal amplification is realized; polyT serves as a template, in-situ deposition of a large amount of CuNPs is caused in a short time, the signal response of the electrochemical sensor is remarkably enhanced, and third signal amplification is achieved. And finally, monitoring metal ions released by dissolution of the nanoparticles by using a differential pulse voltammetry, and drawing a standard curve through current change to realize accurate quantification of the target virus. The method is high in sensitivity and good in specificity, and can be used for general detection of viruses by replacing a target virus specific sequence and a corresponding probe.

The invention relates to self-purification modified asphalt capable of releasing negative ions and a preparation method of the self-purification modified asphalt, and belongs to the technical field of road materials. In order to solve the problems of unstable negative ion release, limited pollutant degradation capacity, insufficient mechanical property and durability and poor environmental adaptability of the existing modified asphalt, the invention provides a self-purification modified asphalt capable of releasing negative ions, which comprises the following components: matrix asphalt, tourmaline powder, cerium dioxide and a dispersing agent. The cerium dioxide is introduced into the modified asphalt, so that the cerium dioxide not only can release negative ions, but also can enhance the electron transfer efficiency of tourmaline, the negative oxygen ion release amount of the modified asphalt reaches 8000-9000 ions, particulate matters are efficiently adsorbed, and the self-purification function is realized. According to the invention, negative oxygen ion release and pavement structure performance are combined, and the prepared modified asphalt has good bearing performance and durability, can meet the application requirements of traffic facilities such as urban roads and expressways, and has a wide application prospect.