36 results about "Nanocontainer" patented technology

The invention relates to the technical field of coatings, in particular to an acrylate-epoxy resin composite coating and a preparation method thereof. According to the technical scheme, the coating is prepared from 25 to 35 parts of methyl methacrylate, 15 to 25 parts of butyl acrylate, 10 to 20 parts of epoxy resin E-5110, 8 to 15 parts of organic silicon modified acrylate prepolymer, 5 to 12 parts of fluorocarbon modified epoxy resin, 4 to 8 parts of core-shell structure corrosion inhibition nano container, 1 to 3 parts of functionalized graphene quantum dots and 4 to 10 parts of polyhedral oligomeric silsesquioxane maleimide modified amine curing agent. And 1-3 parts of a hindered amine light stabilizer. By integrating the core-shell structure corrosion inhibition nano container, the functionalized graphene quantum dots and the photo-thermal dual responsive curing agent component, the sensing, response and self-repairing of the coating on damage are realized, and long-acting corrosion resistance, weather resistance, bacteria resistance, mechanical property balance and intelligent maintenance are considered; and efficient and economical full-period protection is provided for equipment in an extreme environment.

The invention belongs to the field of corrosion and protection, and discloses a preparation method of an intelligent coating with multistage self-repairing capability. According to the method, a core-shell structure nano container with a metal organic framework (MOF) compound as a core and layered double hydroxide (LDH) as a shell is prepared, different functional objects are respectively loaded in the core and the shell by adopting a step-by-step in-situ loading method, and graded release of the functional objects is realized by utilizing pH responsiveness of the MOF and corrosive ion responsiveness of the LDH; the nano container is added into an organic coating as a filler to construct an intelligent coating with multi-stage self-repairing capability. The problems of passive protection and uncontrollable corrosion inhibitor release of a traditional anti-corrosion coating are solved, the coating can repair corrosion defects in time according to needs, the long-acting corrosion resistance is remarkably improved, the preparation process is simple, the condition is mild, and the coating is suitable for metal protection of high-end equipment and other complex service environments.

The invention provides a preparation method of a polymer coating with a bowknot-shaped core-shell nano container, which comprises the following steps: firstly preparing a Ce-MOF nano container through specific steps, and then carrying out functional modification by loading tannic acid and polyethyleneimine to obtain CTAP. And then, synthesizing a bornyl fluorine-containing acrylic polymer (PBAF), and combining the bornyl fluorine-containing acrylic polymer with the CTAP to form the nano container polymer coating with the bowknot-shaped core-shell structure. In the preparation process, the raw material ratio, the reaction conditions and the like are optimized in detail, and the purity, the structural stability and the functionalization effect of the product are ensured. The coating has excellent anti-fouling, anti-corrosion and self-repairing performance, and is suitable for various complex environments. Compared with a traditional coating material, the performance of the prepared coating is remarkably improved, and the anti-fouling and anti-corrosion application with higher requirements can be met.

The preparation method comprises the following steps: carrying out activation pretreatment on a reverse osmosis membrane base membrane, and introducing a functional anchor point group on the surface of the membrane; a layered assembly mode is adopted, an embedded hydrophilic barrier layer and a nanometer container type sterilization precursor layer are sequentially constructed, and the nanometer container type sterilization precursor layer contains a controllable release structure capable of responding to microbial metabolites or external stimulation; and real-time monitoring and modification regulation are carried out in the layered assembly process. According to the technical scheme, through the design of a controllable release structure, the long-acting antibacterial performance is guaranteed, and the influence of excessive sterilization on the film performance is avoided. Meanwhile, the uniformity and integrity of the functional layer are ensured through real-time monitoring and modification regulation, the service life of the membrane is remarkably prolonged, the operation stability of the membrane is remarkably improved, and the method has important significance in reducing the operation cost of the system and preventing secondary pollution.

The invention relates to a self-repairing anticorrosive coating, a preparation method thereof, a photovoltaic module and a frame thereof. According to the self-repairing anticorrosive paint and the preparation method thereof, a specific amount of the solvent, the repairing agent nanometer container and the curing agent are added into the film-forming resin, the repairing agent is a heterocyclic compound capable of being subjected to coordination reaction with metal ions, heteroatoms of the heterocyclic compound comprise at least one of N, S and O, the nanometer container serves as a carrier of the repairing agent, and the curing agent is a curing agent. When corrosive media such as water molecules permeate into the surface of the frame to cause local corrosion, the repairing agent diffuses out of the nanometer container at the invasion position of the corrosive media and is subjected to coordination reaction with metal ions generated by corrosion reaction to form a new local protection film, and further diffusion of corrosion is limited. In addition, migration of metal ions can be well limited through the coordination effect, and then the effect of controlling PID effect deterioration is achieved. Therefore, the stability and the long-term effect of the frame and the assembly in severe environments such as high humidity and high salt can be improved.

The present invention belongs to the technical field of functional coatings, and specifically discloses a pH-responsive anti-corrosion and wear-resistant coating and a preparation method thereof. The anti-corrosion and wear-resistant coating is composed of composite nanocontainers and polymer resins, and the composite nanocontainers are composed of two-dimensional MXene nanosheets and zeolitic imidazolate frameworks. Among them, the mass ratio of the composite nanocontainers to the polymer resins is 1:200 to 1:30; the mass ratio of the zeolitic imidazolate frameworks to the two-dimensional MXene nanosheets is 1:2 to 1:10; the two-dimensional MXene nanosheets are selected from one or more of Ti3C2T x , V2CT x , Nb2CT x ; the zeolitic imidazolate frameworks include one or more of ZIF-7, ZIF-8, and ZIF-62; the polymer resins are one or more of polyurethane resins, silicone resins, epoxy resins, and fluorocarbon resins. The present invention also discloses a specific preparation method of the above coating, and the prepared coating can respond to the corrosion at the interface between the coating and the metal, showing great potential in intelligent protection applications.

The invention discloses an MXene-LDH composite material with an autonomous corrosion inhibition function and a preparation method and application thereof, and belongs to the technical field of transition metal carbon / nitride.The unique two-dimensional structures of transition metal carbon / nitride (MXene) and double-layer metal hydroxide (LDH) are combined, and the MXene-LDH composite material and the double-layer metal hydroxide (LDH) synergistically exert the physical barrier effect; meanwhile, the corrosive ion Cl <-> is rapidly captured by utilizing the unique ion exchange capacity of LDH so as to delay corrosion; lDH is used as a nano container, MoO4 < 2-> is introduced as a corrosion inhibitor, and Zn < 2 + > is combined, so that the composite coating is endowed with excellent self-repairing capability, and MXene with excellent conductivity provides a foundation for the composite coating as an electromagnetic attenuation material. Finally, the MXene-LDH composite material with a two-dimensional sheet-shaped interlaced and staggered network structure is constructed, and a novel material with corrosion prevention, electromagnetic attenuation and corrosion inhibition self-repairing functions is obtained.

The invention relates to the technical field of nano materials, and relates to a swelling type hollow fiber container as well as a preparation method and application thereof, in particular to an electrostatic spinning nanofiber container with a swelling effect as well as a preparation method and application thereof. According to the invention, polyvinyl alcohol and sodium polyacrylate are used as a nano container prepared by adopting an electrostatic spinning technology, a nanofiber membrane with a hollow shell structure is prepared, and the loading effect of the nano container and the filling effect of the nano container on internal gaps after the nano container swells are explored. The prepared nanofiber container has good loading capacity, has a good swelling effect in a humid environment, and has a good application prospect in the fields of drug delivery, sensing and the like.

This invention relates to the field of flux preparation technology, specifically a method for preparing a pre-coated flux for photovoltaic solder ribbon, comprising the following steps: loading a corrosion inhibitor onto a nano-loaded material, encapsulation treatment, surface hydrophilic modification, and flux preparation. This invention effectively solves the problems of traditional water-based halogen-free pre-coated fluxes lacking slow-release protection and prone to premature reaction and consumption, leading to long-term storage failure, through the synergistic effect of nano-loading, chitosan encapsulation, and hydrophilic modification. Simultaneously, it overcomes the problems of existing nano-container systems being difficult to stably disperse in water-based systems and prone to aggregation and precipitation, preventing corrosive media from penetrating along defects and accelerating corrosion. It retains the environmental advantages of water-based halogen-free, VOC-free, and wash-free properties, while achieving long-term controllable release of the corrosion inhibitor and dual protection through film-forming hydrophobic barrier, significantly improving the storage stability and corrosion resistance of photovoltaic solder ribbons in humid and hot environments.

The invention discloses a preparation method and application of a nano composite material based on polymer intercalation hybridization and anti-dispersion cement paste, and the preparation method comprises the following steps: dispersing hydrotalcite powder in deionized water to form a stable suspension; dropwise adding a polycarboxylate superplasticizer monomer into the suspension, and adjusting the pH value to 7-8; adding an initiator to carry out in-situ polymerization reaction for 6-8 hours at the temperature of 40-60 DEG C under the protection of nitrogen; and drying and grinding the reaction product to obtain the PCE-LDH nano composite material. According to the invention, an in-situ intercalation polymerization method is adopted to construct a nano composite additive with a nano container function, the slow release of the water reducing agent can be realized, when the nano composite additive is applied to anti-dispersion slurry, the water reducing agent locked between hydrotalcite layers at the initial stage can avoid the viscosity competition with a flocculating agent, and the stability of a system is ensured; the polycarboxylate superplasticizer is controllably released from hydrotalcite layers in the later stage, so that the fluidity loss caused by a flocculating agent can be effectively counteracted, and the filling compactness and the final mechanical strength of the slurry are improved.

This invention discloses a choline salt ionic liquid, the molecular structure of which is shown below. This invention not only provides a method for preparing the choline salt ionic liquid ([Ch][Benzoic Acid]), but also a method for preparing an epoxy resin coating using a modified hydrotalcite nanocontainer. The method includes: preparing [Ch][Benzoic Acid] using a simple neutralization method; using the prepared [Ch][Benzoic Acid]-modified hydrotalcite nanocontainer (CB-LDH), finally doping it with epoxy resin, and then preparing an anti-corrosion coating (CB-LDH / EP coating) on ​​the treated substrate surface using spin coating. The preparation process of this invention is simple and environmentally friendly, and the prepared CB-LDH / EP coating exhibits excellent corrosion resistance and good self-healing properties, showing broad application prospects in the field of corrosion protection.

The invention belongs to the technical field of metal rust prevention, and particularly relates to a mesoporous organic silicon nanometer container of a spiral structure and a preparation method and application of the mesoporous organic silicon nanometer container. The preparation method comprises the following steps: sequentially adding a structure-directing agent and a basic catalyst into water, and heating and stirring to form a uniform transparent solution; slowly dropwise adding organosilane into the solution through a constant-pressure dropping funnel, and heating and stirring to obtain a mesoporous organic silicon nanorod with a spiral structure; then, a corrosion inhibitor is loaded in pore channels of the mesoporous organic silicon nanorods to prepare an anti-rust nanocontainer, and the anti-rust nanocontainer serves as key filler to be added into epoxy resin so as to improve the anti-rust performance of an epoxy coating. The organic silicon framework structure of the mesoporous nanorod can improve the compatibility of the nano container to a corrosion inhibitor, the spiral structure of the mesoporous nanorod can improve the slow release capacity of the nano container, the corrosion inhibitor is slowly released through a spiral duct to form a corrosion inhibition film on the metal surface, the metal corrosion process is effectively inhibited, and the long-acting rust prevention capacity of an epoxy coating is improved; wide application prospects are realized in the field of metal rust prevention.

The application provides a hollow mesoporous silica (BTA@HMSNs-CS) material for metal material targeted corrosion inhibition and Pickering emulsion stabilization in an oil production well, a preparation method and an application. The material selects hollow mesoporous silica (HMSNs) as a nano container for loading corrosion inhibitors, cross-linked chitosan (CS) as a pH response valve for controlling corrosion inhibitor release and reducing interfacial tension to form a Pickering emulsion. The BTA@HMSNs-CS is assembled from an acid response cross-linked CS network and a large cavity HMSNs, the preparation method is simple and easy to implement, has good acid response and emulsion stabilization performance, and has great reference value and application prospect in the field of downhole metal corrosion prevention and emulsion stabilization.

The invention discloses a preparation method of a PILs / LDH nano-composite tanning agent, which is characterized by being specifically implemented according to the following steps: step 1, preparing MgAlZr-LDH; step 1.1, preparing a mixed salt solution; step 1.2, mixing the mixed salt solution with an alkali solution; step 1.3, obtaining MgAlZr-LDH (layered double hydroxide); 2, a PILs / LDH nano composite tanning agent is prepared; step 2.1, preparing a mixed solution; and 2.2, MgAlZr-LDH is added into the mixed solution, and the PILs / LDH nano composite tanning agent is obtained. According to the PILs / LDH nano-composite tanning agent prepared through the method, LDH is evenly dispersed in a polymer matrix, and the PILs / LDH nano-composite tanning agent combines the anti-agglomeration characteristic of PILs and the layered nano-container structure of LDH to construct an integrated tanning agent system. The invention further discloses a PILs / LDH nano-composite tanning agent and application thereof.

The invention discloses a preparation method of an acid-resistant water-based environment-friendly intelligent epoxy anticorrosive paint, and relates to the field of epoxy anticorrosive paints.The preparation method comprises the following intelligent anticorrosive corrosion inhibitor reaction steps that S1, graphene oxide is used as a raw material, rutin is used for reducing graphene oxide, and rutin-reduced graphene oxide is obtained; the self-repairing intelligent anti-corrosion coating capable of releasing the corrosion inhibitor in an acid environment is prepared by combining an in-situ reaction compounding method with an intelligent nano controlled release technology, taking graphene as a carrier and loading the corrosion inhibitor with a nano container, the graphene / silicon dioxide loaded corrosion inhibitor can be stably dispersed in a water medium and has good compatibility with polymer emulsion, and the corrosion inhibitor can be used as a self-repairing intelligent anti-corrosion coating capable of releasing the corrosion inhibitor in the acid environment. When a modified coating prepared by adding the corrosion inhibitor into a polymer emulsion is soaked in a corrosive medium, excellent barrier performance can be provided, meanwhile, when the coating is damaged, a corrosion inhibitor can be released, a passive film is formed with metal, and a protective self-repairing effect on the damaged part is achieved.

The invention belongs to the technical field of metal coatings, and particularly relates to a ZIF-8 composite material, an epoxy resin composite material and a preparation method and application thereof. The ZIF-8 composite material comprises ZIF-8 and a corrosion inhibitor, the corrosion inhibitor is embedded in a ZIF-8 frame to form a pomegranate-shaped structure, the pomegranate-shaped structure comprises n layers, and n is an integer greater than or equal to 1. When the epoxy resin composite material based on the first ZIF-8 composite material is used as a magnesium alloy coating, the pomegranate-shaped multi-cavity structure is beneficial to improving the loading capacity of an 8HQ corrosion inhibitor, and meanwhile, the release efficiency of the corrosion inhibitor can be enhanced through the multi-stage pore channel structure of the first ZIF-8 composite material. And when the coating is damaged, the nano container can quickly release a large amount of 8HQ, and the 8HQ and Mg < 2 + > on the surface of the magnesium alloy generate chelation to form a compact and complete protective layer, so that the self-repairing anti-corrosion performance of the magnesium alloy epoxy coating is improved.

The present application relates to the technical field of traction rope, and particularly relates to a high-strength friction-resistant fiber traction rope, which comprises a composite fiber rope core and an outer layer steel wire strand wrapped around the composite fiber rope core, and the composite fiber rope core is composed of carbon fiber and basalt fiber composite twisting; composite electroplating treatment is performed on the steel wire constituting the outer layer steel wire strand, and then a protective coating prepared by using composite nanometer silicon carbide, micron silicon dioxide and self-repairing coating containing disulfide bond is coated, so that a self-repairing super-hydrophobic wear-resistant surface is constructed on the surface of the traction rope, the traction rope is endowed with good mechanical damage resistance, and the durability of the traction rope in friction resistance and corrosion resistance is improved; a zinc-cerium metal framework with 2-methyl imidazole as an organic ligand is in-situ grown on the silicon carbide nanowire, and the zinc-cerium metal framework serves as a nano container of a sulfur-containing heterocyclic amino alcohol corrosion inhibitor prepared by using 2-thiophenemethylamine and ethylene glycol diglycidyl ether.

The invention relates to the field of metal corrosion protection, and discloses a composite material, a preparation method and application thereof, and a preparation method of an anticorrosive coating. The invention relates to a composite material. The composite material comprises an MIL-101 (Fe) nano container and a corrosion inhibitor, wherein the average cavity diameter of the MIL-101 (Fe) nanometer container is 40 to 130 nm. An anti-corrosion coating prepared from the composite material is applied to metal corrosion protection and has an excellent self-repairing effect.

The invention discloses a nanometer container with corrosion inhibitor releasing and emulsifying capacity, a preparation method and application, and relates to the technical field of material corrosion prevention. The preparation method comprises the following steps: by taking tetraethyl orthosilicate as a raw material, preparing HMSNs as a shell layer by adopting a template method under the action of ammonia water and hexadecyl trimethyl ammonium bromide; the preparation method comprises the following steps: loading 2-mercaptobenzothiazole into an HMSNs shell layer by adopting a vacuum loading method to form MBT-coated HMSNs; mBT-coated HMSNs are placed in a buffer solution, sodium dodecyl benzene sulfonate is added into the buffer solution for stirring, then polyethyleneimine is added into a mixture obtained through stirring for a reaction, MBT-coated HMSNs-coated PEI is obtained, 1, 2-epoxy octadecane is grafted to a PEI layer of the MBT-coated HMSNs-coated PEI, and the nano container is obtained. The prepared nano container can convey MBT to a corrosion area in an oil well for targeted corrosion inhibition, and meanwhile, deep oil drops can be emulsified to improve the petroleum recovery efficiency.

The invention relates to a double-component waterborne epoxy primer with excellent water resistance and adhesive force for industrial renovation as well as a preparation process and application of the double-component waterborne epoxy primer. The double-component waterborne epoxy primer comprises a component A and a component B. The component A comprises the following components in percentage by weight: 45-55% of epoxy emulsion; 5-10% of titanium dioxide; 8-10% of an anti-rust pigment; 0.1 to 0.2 percent of a defoaming agent; 0.3-0.5% of a wetting dispersant; 0.3%-0.5% of a base material wetting agent; 3-5% of deionized water; 3-5% of a cosolvent; 3-5% of aluminum tripolyphosphate; 2% of a thickening agent; a water-based resin system is selected, VOC is smaller than or equal to 7g / L, the odor is very low, the coating is more environmentally friendly than existing materials, meanwhile, 3986 and A35-1 are matched in proportion, when A35-1 and 3986 are mixed according to the weight ratio of 5: 1, the A35-1 and 3986 have the most excellent adhesive force with an aluminum plate galvanized plate and have the best water resistance, and in addition, a proper amount of silica sol is added into the component B, so that wetting of a coating on the aluminum plate is increased, and the adhesive force is increased.

This invention relates to the field of flux preparation technology, specifically a method for preparing a pre-coated flux for photovoltaic solder ribbon, comprising the following steps: loading a corrosion inhibitor onto a nano-loaded material, encapsulation treatment, surface hydrophilic modification, and flux preparation. This invention effectively solves the problems of traditional water-based halogen-free pre-coated fluxes lacking slow-release protection and prone to premature reaction and consumption, leading to long-term storage failure, through the synergistic effect of nano-loading, chitosan encapsulation, and hydrophilic modification. Simultaneously, it overcomes the problems of existing nano-container systems being difficult to stably disperse in water-based systems and prone to aggregation and precipitation, preventing corrosive media from penetrating along defects and accelerating corrosion. It retains the environmental advantages of water-based halogen-free, VOC-free, and wash-free properties, while achieving long-term controllable release of the corrosion inhibitor and dual protection through film-forming hydrophobic barrier, significantly improving the storage stability and corrosion resistance of photovoltaic solder ribbons in humid and hot environments.

This invention discloses a multi-layer self-healing anti-corrosion and anti-fouling coating and its preparation method. The method uses hollow cerium dioxide as a nano-container to load a benzotriazole corrosion inhibitor and a 4,5-dichloro-2-n-octyl-3-isothiazolinone antifouling agent. The surface of the cerium dioxide loading mixture is then modified with silane acrylate, significantly improving the particle dispersibility in the acrylic composite coating. Finally, it is polymerized with acrylic acid and methyl methacrylate to prepare the multi-layer self-healing anti-corrosion and antifouling coating. Furthermore, constant current co-deposition further enhances the effect. The resulting coating possesses excellent anti-corrosion and antifouling properties, providing long-term protection for various metal materials and extending their service life.

The present disclosure provides an epoxy coating and a preparation method thereof, the preparation method comprising the following steps: Step 1, preparation of nano-container mesoporous ZSM-5; Step 2, assembly of pH stimulus-responsive intelligent nano-container, mainly including vacuum adsorption of 8-HQ, electrostatic adsorption of PEI and PSS, ion exchange of Ce 3+ and electrostatic adsorption of PSS; Step 3, preparation of an epoxy coating on an aluminum alloy surface. The mesoporous ZSM-5 of the present disclosure itself has a pH stimulus-responsive performance, and after the assembly of the intelligent nano-container, the release amount of the corrosion inhibitor and the fluorescent probe under neutral conditions can be extremely low, the release amount of Ce 3+ is about 1.54E-2 mmol, and the release amount of 8-HQ is about 1.58E-2 mmol, which changes the major defect that ZSM-5 releases a large amount of corrosion inhibitor under neutral conditions, and the prepared epoxy coating has the dual functions of self-warning and self-repair.

This invention discloses an acid-base responsive boron nitride nanocontainer-driven self-healing and aging-resistant synergistic anti-corrosion coating and its preparation method. The method involves in-situ growth of polydopamine on a hydroxylated boron nitride nanosheet carrier, followed by loading a benzotriazole corrosion inhibitor to obtain an acid-base responsive, highly loaded active nanocontainer (BPB). This BPB is then embedded in an epoxy resin matrix to obtain a composite anti-corrosion coating, EP-BPB. This invention's acid-base responsive, controllable-release BPB nanocontainer-assisted self-healing epoxy composite coating enables the coating to exhibit a rapid response to substrate corrosion. The released corrosion inhibitor migrates to the corroded substrate and forms a reliable protective molecular film, thereby maximizing the coating's anti-corrosion performance. Simultaneously, the coating of this invention possesses excellent UV resistance, maintaining stability under long-term exposure, making it suitable for in-situ corrosion protection of marine equipment.

The invention provides a preparation method and application of a cerium-doped dendritic mesoporous organic silicon nano container. Through a one-pot copolycondensation method, cerium ions are doped into an organic silicon skeleton containing a tetrasulfide bond in an in-situ coordination manner to form nanoparticles with a central radial mesoporous structure. The nano container is large in specific surface area, open in pore channels and capable of efficiently loading a benzotriazole corrosion inhibitor, and the surface of the nano container is coated with a polydopamine pH response layer. The obtained intelligent slow-release system is stably closed in a neutral environment, cerium ions and a corrosion inhibitor are quickly released under an acidic condition, a compact protective film is synergistically formed, and the corrosion resistance of metal is remarkably improved. The method has the advantages of easily available raw materials, simple operation and sensitive response, and has potential application value in the field of intelligent self-repairing anticorrosive coatings.

This application relates to the technical field of metal rust-preventive packaging materials, specifically disclosing a novel composite vapor phase rust inhibitor film and its manufacturing method. The novel composite vapor phase rust inhibitor film comprises the following raw materials in parts by weight: 20-30 parts halloysite nanotubes, 15-20 parts phytic acid, 5-8 parts benzotriazole, 3-5 parts ammonium molybdate, 1-3 parts epoxidized soybean oil, 4-6 parts polyethylene grafted with maleic anhydride, 70-80 parts linear low-density polyethylene, and 8-12 parts low-density polyethylene. This application uses halloysite nanotubes as nanocontainers to provide confined space, thereby utilizing the steric hindrance effect of the nanotube cavity to allow corrosion inhibitor components with different volatilization rates to be released through the nanotube opening at similar diffusion rates. This suppresses the rapid escape of highly volatile components and the delayed release of low-volatile components, ensuring that multiple corrosion inhibitors volatilize essentially synchronously throughout the entire service life, achieving balanced protection for various metals such as steel, copper, and aluminum alloys.

The invention belongs to the field of analysis and detection, and provides a CRISPR (clustered regularly interspaced short palindromic repeats)-based DNA / RNA (deoxyribonucleic acid / ribonucleic acid) synchronous detection method and a CRISPR-based DNA / RNA synchronous detection platform and application of the CRISPR-based DNA / RNA synchronous detection platform in respiratory tract pathogen multiplex detection.The CRISPR-based DNA / RNA synchronous detection method comprises the steps that corresponding crRNA is designed according to nucleic acid to be detected, the nucleic acid to be detected is mixed and incubated with a Cas12a-crRNA compound or a Cas13a-crRNA compound and then mixed and incubated with MB (at) LP-linker-FB according to the claim 6, and after incubation is finished, DNA / RNA synchronous detection is carried out. And performing magnetic separation, collecting supernate, adding Triton X-100 for cracking MB-coated LP, and detecting peak current generated by MB by adopting DPV, thereby obtaining the MB-coated LP. According to the invention, a general nucleic acid detection strategy with a synergistic effect of a CRISPR / Cas system and a liposome nano container is constructed, and then a parallel loading system of Cas12a and Cas13a is established based on a multi-channel centrifugal microfluidic detection platform, so that multi-linked detection of pathogens with genetic materials, namely DNA and RNA, in a single sample is realized. According to the designed MB-coated LP-linker-FB composite signal carrier, on one hand, the MB packaging efficiency and the release control force are improved, and on the other hand, a highly specific detection mechanism is established through enzyme digestion response.

This invention relates to the field of waterborne anti-corrosion coatings, specifically to a photoelectric dual-trigger waterborne anti-corrosion coating and its preparation method. The coating comprises: a waterborne polymer matrix; and a UCNPs / NIR-responsive corrosion inhibitor prodrug composite nanocontainer, wherein the upconversion nanoparticles UCNPs have the chemical formula NaYF4:Yb. 3+ Tm 3+ Or NaYF4:Yb 3+ Er 3+ The molar ratio of doping is Yb 3+ :Tm 3+ =18-20:0.5-2 or Yb 3+ Er 3+ =18-20:1-3; conductive nanomaterials; the mass fraction of the UCNPs / NIR-responsive corrosion inhibitor prodrug composite nanocontainer in the total solids of the coating is 2-10 wt%, and the mass fraction of the conductive nanomaterials in the total solids of the coating is 0.5-5 wt%. This coating achieves deep, spatiotemporally precise, and controllable on-demand release of the corrosion inhibitor by coupling upconversion nanoparticles (UCNPs) with near-infrared (NIR) responsive corrosion inhibitor prodrugs and combining them with conductive nanomaterials such as MXene or graphene to construct a photoelectric dual-trigger release system.

The application discloses a preparation method of super-hydrophobic anti-corrosion paint with self-repairing function. Specifically, the method comprises the following steps: firstly, synthesizing microcapsules on the surface of graphene by using cyclodextrin, adding corrosion inhibitors to construct graphene loaded with corrosion inhibitors, mixing with ethanol and fluorinated modifier to construct fluorinated modified graphene loaded with corrosion inhibitors; preparing anti-corrosion paint component A by mixing fluorosilicon resin stock solution, organic solvent and fluorinated modified graphene loaded with corrosion inhibitors; preparing anti-corrosion paint component B by adding modified carbon nanotubes to fluorosilicon resin curing agent; finally, mixing anti-corrosion paint component A and anti-corrosion paint component B to prepare super-hydrophobic anti-icing paint with self-repairing function. The micron-level structure of graphene loaded with nanometer container and the hierarchical structure constructed by carbon nanotubes are utilized, meanwhile, the nanometer container can release corrosion inhibitors after acid-alkali etching, so that the damaged coating can be repaired and the anti-corrosion performance can be improved.

The invention discloses a self-repairing / corrosion early warning bifunctional coating based on corrosion cathode and anode micro-area environmental response release. The coating comprises a corrosion inhibitor A-loaded nanometer container responding to a corrosion cathode micro-area and a corrosion inhibitor B-loaded nanometer container responding to a corrosion anode micro-area. The preparation method of the coating comprises the following steps: adding the nano container A and the nano container B into deionized water, then adding the epoxy resin and the curing agent, stirring at a high speed to obtain a composite epoxy resin coating, coating the composite epoxy resin coating on a metal substrate, and curing to obtain the self-repairing / corrosion early-warning dual-function coating. According to the coating, the compound corrosion inhibitor or the fluorescent agent is accurately released under the stimulation of a corrosion cathode and anode micro-area environment, the corrosion inhibition effect of the cathode type corrosion inhibitor in a corrosion cathode micro-area is utilized, the change (enhancement or quenching) of the fluorescence intensity of the fluorescent agent in a corrosion anode micro-area is used for indicating a corrosion area, and the long-acting self-repairing protection and corrosion early warning effects are achieved.