199results about How to "Promote migration" patented technology

The invention provides a preparation method of a laminated cell, the laminated cell and a photovoltaic module, and can be widely applied to the photovoltaic technical field, the preparation method of the laminated cell comprises the following steps: providing a bottom cell, and forming a composite layer on the bottom cell; a first transmission layer is formed on the composite layer, and a skeleton layer is formed on the first transmission layer through double-source evaporation; wherein a first evaporation source of the double-source evaporation comprises inorganic cesium salt, and a second evaporation source of the double-source evaporation comprises inorganic lead salt and inorganic rubidium salt; coating organic salt on the framework layer to form a perovskite layer; forming a second transmission layer and an electrode on the perovskite layer to obtain a laminated cell; wherein carriers of the first transmission layer and the second transmission layer are different. The framework layer is formed through double-source evaporation, the proportion is better controlled, through rubidium and lead, a positive effect can be generated on crystallization, stress release and the like of perovskite in the crystallization process, part of rubidium salt can be combined with PbI2 decomposed on the surface, ion migration is reduced, and the device stability is improved.

The invention relates to the technical field of antibacterial materials, and provides a light-enzyme-heat synergistic antibacterial nano composite material and a preparation method thereof.The preparation method comprises the steps that 1, a copper-based chalcogenide with a plasma resonance effect serves as a structural template, a transition metal oxide intermediate layer and a bismuth oxyhalide epitaxial layer are sequentially constructed on the surface of the copper-based chalcogenide with the plasma resonance effect through a step-by-step continuous solvothermal method, and the copper-based chalcogenide with the plasma resonance effect serves as the structural template; forming a core-shell heterojunction with Z-type energy band matching; (2) pre-assembling a natural enzyme and a monatomic nano-enzyme in a buffer system to form a composite catalytic unit with an electron transfer channel; and (3) by taking the core-shell heterojunction as a polymerization core, under the precise temperature control condition of 0-10 DEG C, initiating active free radical polymerization through an interface, constructing a thermal response polymer shell layer on the surface of the heterojunction, and encapsulating the composite catalytic unit in a functional microdomain of a polymer network in situ. The anti-bacterial fabric can achieve a better synergistic anti-bacterial effect.

The invention relates to the technical field of photocatalytic processes, in particular to a catalyst for preparing methanol through photocatalytic reduction of CO2 as well as a preparation method and application of the catalyst. The catalyst comprises a composite carrier and active sites dispersed on the surface or in pores of the composite carrier, the composite carrier is of a heterojunction composite structure formed by a hollow TiO2 sphere and MCN, the hollow TiO2 sphere comprises a shell layer and a spherical cavity structure located in the shell layer, the shell layer is formed by TiO2 nanoparticles, and the MCN has a mesoporous pore structure; a II-type or Z-type heterojunction interface is formed between the hollow TiO2 spheres and the MCN through physical contact and chemical action; the active sites comprise copper nano species, sulfur vacancy defects and amino groups; the copper nano species are copper nano particles or clusters, and the valence state of copper is 0 and / or + 1 valence amino is grafted on the surface of the composite carrier through an organic long chain. The catalyst provided by the invention can greatly improve the yield and selectivity of methanol prepared by photocatalytic reduction of carbon dioxide.

This invention discloses a modified perovskite thin film, a perovskite composite film, their preparation method, and a solar cell. This invention introduces a compound of formula I into perovskite, utilizing the hydrazine group on its structure to selectively reduce formula I. 0 This reduces the possibility of ion migration, thereby preventing performance degradation caused by ion migration. Simultaneously, it participates in the nucleation and crystallization regulation of perovskite; the O atoms with lone pairs of electrons can coordinate with Pb atoms, thus delaying the crystallization process of perovskite materials to a certain extent, contributing to the acquisition of high-quality perovskite thin films. This invention further modulates the Fermi level of the thin film through substituent design, reducing charge accumulation at the heterojunction and further improving device efficiency and operational stability, demonstrating great potential in improving the optoelectronic performance and stability of devices.

The invention relates to the technical field of thermal control coatings, in particular to a liquid metal commercial aerospace thermal control coating adaptive to extreme temperature difference, which comprises a substrate binding layer and a thermal control functional layer, the thermal control functional layer is arranged on the side wall of the substrate binding layer, a thermal circulation pipe is arranged in the thermal control functional layer, and a composite heat conduction layer is arranged on the side wall of the thermal control functional layer. A limiting stabilizing layer is arranged on the side wall of the composite heat-conducting layer. By arranging the multi-layer composite structure and the liquid metal, efficient heat regulation and control in an extreme temperature difference environment are achieved, the substrate combination layer is made of a radiation-resistant material, it is ensured that the structure stability is kept in a strong radiation environment, the liquid metal material in the heat control function layer and a cross circulation plate form a three-dimensional heat conduction network through a disc-shaped heat control circulation pipe, and the heat conduction efficiency is improved. And by arranging the separation cavity, atomic oxygen erosion is effectively blocked, and the inorganic thermal control coating layer of the separation cavity can adjust the surface thermal radiation characteristic.

The invention provides a wear-resistant anti-aging waterproof tarpaulin and a preparation method thereof, and belongs to the technical field of tarpaulin. The wear-resistant anti-aging waterproof tarpaulin comprises a base cloth layer and a PVC (polyvinyl chloride) coating coated on the base cloth layer, wherein the PVC coating is prepared from the following raw materials: 70 to 90 parts of PVC paste resin, 5 to 15 parts of a composite plasticizer, 10 to 30 parts of TiO2-HNTs powder, 3 to 5 parts of chlorinated paraffin, 8 to 12 parts of an additive and 80 to 100 parts of a solvent. The titanium dioxide and the halloysite nanotubes are compounded, the titanium dioxide is loaded on the halloysite nanotubes, agglomeration of the titanium dioxide is prevented, and the mechanical property and wear resistance of the tarpaulin can be effectively enhanced by adding the halloysite nanotubes.

The invention belongs to the technical field of algal polysaccharide extraction, and discloses a modification extraction method of algal asparagus polysaccharide and a method for preparing a lutein coating by using the algal asparagus polysaccharide. The modified extraction method comprises the following steps: extracting gracilaria lemaneiformis powder with a weak base solution, enabling lactide and polysaccharide to be subjected to grafting reaction through a redox initiation system under the assistance of ultrasonic waves, and then separating out a first polysaccharide component with high emulsibility and a second polysaccharide component with high gel property through graded alcohol precipitation. The two obtained functional components are used for coating xanthophyll, specifically, the first polysaccharide component emulsifies a xanthophyll oil phase to form a pre-emulsion, the second polysaccharide component is compounded with gelatin, a composite coacervate is formed on an oil drop interface by adjusting the pH value, and finally drying and curing are conducted. According to the method, two modified polysaccharides with definite functions can be synchronously obtained, the prepared xanthophyll coating is high in encapsulation efficiency, good in storage and processing stability and excellent in water dispersibility, and the problems that xanthophyll is unstable and difficult to apply are effectively solved.

This application provides a devolatilization process for PC and ABS alloy materials, comprising: obtaining the initial processing temperature, preset shear rate, and initial residence time of the melt in a devolatilization device; calculating the estimated adhesion thickness and theoretical surface renewal rate of the melt on the inner wall of the device based on the initial processing temperature and the preset shear rate; if the theoretical surface renewal rate is lower than a preset threshold, adjusting the geometric parameters of the devolatilization device cavity to enhance melt flow; determining the melt residence time window based on the optimized parameters and the initial processing temperature; if the initial processing temperature is higher than a preset threshold, introducing an auxiliary medium to promote volatile migration; obtaining the final volatile concentration and material performance data, comparing them with preset indicators, and determining the compliance of the process parameters.

This invention belongs to the field of membrane separation technology, specifically relating to a method for preparing a polytetrafluoroethylene (PTFE) composite membrane. The preparation method includes: (1) dissolving a spinning aid, a barium source, a titanium source, and a manganese source in a composite solvent, and then electrospinning to obtain precursor fibers; subsequently, blending the precursor fibers with a grain refiner, and heat-treating to obtain doped ferroelectric fiber bundles; (2) further polymerizing organic acids, inorganic acids, conductive fillers, and conductive polymers with monomers and oxidants to finally obtain a conductive polyaniline composite; (3) incorporating Mxene and the conductive polyaniline composite into an aqueous PTFE emulsion, and then further incorporating the doped ferroelectric fiber bundles and stirring to obtain a suspension; the suspension is then coated, post-treated, and kept warm to obtain a PTFE composite membrane. This invention improves the long-term fouling resistance of the PTFE membrane by doping the doped ferroelectric fiber bundles, the conductive polyaniline composite, Mxene, and PTFE.

This application discloses a Domain Name System (DNS) domain name resolution method and related apparatus, relating to the field of network security technology, used to improve the security and integrity of data in DNS. The method includes: a root server receiving a domain name query request sent by a DNS server, obtaining multiple cipher suites supported by the DNS server from the domain name query request; then, according to the signature algorithms it supports, selecting a target cipher suite from the multiple cipher suites; filtering out target signature algorithms that meet priority conditions from the target cipher suites, and digitally signing the first-level domain name obtained based on the domain name query request according to the target signature algorithm to obtain the signed first-level domain name; finally, sending the signed first-level domain name and the target cipher suite to the DNS server, so that the DNS server can digitally verify the signed first-level domain name based on the target signature algorithm in the target cipher suite to obtain the verified first-level domain name.

This invention belongs to the field of battery materials technology, and discloses a single-crystal lithium nickel manganese oxide material, its preparation method, and a lithium-ion battery. The single-crystal lithium nickel manganese oxide material contains Li... x Ni 2‑x The percentage content of O2 is C≤1.6%, C=(I LixNi2‑xO2 / (I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 ))×100%, I LixNi2‑xO2 For Li in the XRD refinement results x Ni 2‑x The diffraction peak intensity corresponding to O2, I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 To add LiNi to the XRD refinement results 0.5 Mn 1.5 O4 and Li x Ni 2‑x The diffraction peak intensity of the O2 two-phase model indicates a grain size of 5–11 μm. The aforementioned single-crystal lithium nickel manganese oxide material was prepared via a lithium-deficient high-temperature sintering and lithium-replenished low-temperature sintering process. Li x Ni 2‑x Large-particle monocrystalline lithium nickel manganese oxide materials with low O2 content avoid electrolyte decomposition under high voltage, thus preventing the generation of HF and Li. x Ni 2‑x The O2 reaction can effectively improve the cycle stability of the battery. Simultaneously, the high compaction density of monocrystalline lithium nickel manganese oxide material can enhance the battery's energy density, thermal stability, mechanical properties, and durability. The method for preparing monocrystalline lithium nickel manganese oxide material in this invention is relatively simple, reliable, and effective, and can utilize existing production lines.

The invention relates to an interface engineering method of Zn0. 5Cd0. 5S loaded on a high-entropy sulfide cocatalyst and an application of the Zn0. 5Cd0. 5S. According to the method, firstly, a high-entropy sulfide FeCoNiCrAlSx (HES) is synthesized by adopting a solvothermal method, then the high-entropy sulfide HES is introduced into a Zn0. 5Cd0. 5S system through a one-step coprecipitation method, a compact interface is formed between FeCoNiCrAlSx and Zn0. 5Cd0. 5S, and meanwhile, FeCoNiCrAlSx provides abundant active sites. The obtained composite material can promote effective separation and transfer of photo-induced electron holes, the photocatalytic hydrogen production activity of Zn0. 5Cd0. 5S is remarkably improved, and new possibility is provided for designing an efficient and stable non-noble metal photocatalytic system.

The application relates to the technical field of organic light-emitting display, and discloses a cyano-substituted aryl ring-connected triazine compound and application thereof. The cyano-substituted aryl ring-connected triazine compound has a structure as shown in formula (I), the compound provided by the application has high bond energy between atoms, good thermal stability, is conducive to solid-state stacking between molecules, is conducive to injection and migration of excitons, can effectively reduce the driving voltage of an organic electroluminescent device when used as an electron transport material, improves the light-emitting efficiency of the organic electroluminescent device, and prolongs the service life of the organic electroluminescent device. Meanwhile, the cyano substitution can adjust the energy level of the compound, the HOMO and LUMO energy levels are deepened, the compound is more matched with adjacent layers, and the device voltage is reduced. The application further provides an organic electroluminescent device and a display device containing the compound of formula (I).

The invention provides a preparation method of a high-compaction high-capacity lithium iron phosphate material, which comprises the following steps: (1) mixing polyvinyl alcohol, iron phosphate, a lithium source, a carbon source and water to obtain slurry A; mixing iron phosphate, a lithium source, a carbon source and water to obtain slurry B; (2) performing spray drying on the slurry A, and performing low-temperature sintering to obtain a black material C; performing spray drying on the slurry B, and performing high-temperature sintering to obtain a black material D; and (3) mixing the black material C and the black material D, crushing, adding barium titanate, carrying out ball milling, and drying to obtain the lithium iron phosphate material. The polyvinyl alcohol is partially acetylated modified polyvinyl alcohol. The sintering temperature is reduced by adding the modified polyvinyl alcohol to prepare the compact lithium iron phosphate material with smaller particle size, and the lithium iron phosphate material and the lithium iron phosphate material obtained by high-temperature sintering form grading of large and small particles, so that the compaction density of the lithium iron phosphate is improved.

The invention relates to the technical field of biomedical materials and tissue engineering, and discloses sequential slow-release temperature-sensitive hydrogel and a preparation method and application thereof.The preparation method comprises the following steps that a blood sample is subjected to programmed centrifugation, and a gel layer of leukocyte-rich platelet-rich fibrin L-PRF and a gel layer of improved platelet-rich fibrin A-PRF are obtained respectively; and the gel layer is cut into pieces, pre-frozen, freeze-dried, ground and sieved, so that L-PRF freeze-dried powder and A-PRF freeze-dried powder are obtained respectively, and the methacrylic acid gelatin microspheres entrapped with the L-PRF freeze-dried powder are prepared. The microspheres and A-PRF freeze-dried powder are loaded into a temperature-sensitive hydrogel system composed of chitosan, polygalacturonic acid and sodium beta-glycerophosphate, so that the growth factors can be effectively entrapped in the hydrogel structure, and continuous release is realized; the system has good mechanical strength and structural stability, the retention time of the material in vivo is prolonged, and stable three-dimensional network support is provided.

The application relates to the technical field of storage computing, and discloses a system, a method and an electronic device for directly searching data in a storage medium, the system comprising a large-scale vector database, a nearest neighbor search operation unit and a host computer, the large-scale vector database is arranged in the storage medium and is used for storing a vector set; the nearest neighbor search operation unit is arranged in the storage medium; the host computer is provided with a CPU and a cache unit; when the nearest neighbor search operation unit receives an NNS_CSD instruction sent by the CPU, the vector of the database is read, similarity measurement is carried out, and the search result meeting the condition is sent to the cache unit, the application directly searches data in the storage medium, the NNS_CSD instruction is used to start the calculation in the storage medium, the nearest neighbor search operation unit in the storage medium is used for vector reading and similarity measurement, compared with a traditional architecture, the migration of data is greatly reduced, and the overall performance is improved.

This invention discloses a heterogeneous acceleration system and method for analog modulation recognition of large-scale multi-channel signals, comprising: a CPU host processing end and a GPU device computing end; the CPU host processing end is used for asynchronous pipelined processing of data reading, task scheduling, and result distribution, realizing parallel execution of data reading, GPU computing, and result distribution on the time axis; the GPU device computing end completes the entire process of signal preprocessing and deep learning model inference within the GPU memory after the original signal is transmitted to the video memory via the PCIe bus, and does not exchange data with the CPU host processing end until the recognition result is generated. This invention eliminates data transport and I / O blocking through a three-stage asynchronous pipeline architecture and a closed-loop processing link in the entire video memory, and combines parallel preprocessing operators, inference acceleration engines, multi-stream scheduling mechanisms, and dynamic video memory pools to achieve high throughput and low latency recognition of large-scale multi-channel analog modulation signals.

This invention discloses a hydrocolloid material containing guaiac, its preparation method, and its application, belonging to the field of medical care materials technology. It includes a backing layer and a hydrocolloid functional layer. The hydrophobic elastomer matrix comprises polyisobutylene, styrene-isoprene-styrene block copolymer, tackifying resin, liquid paraffin, and optionally caprylic / capric triglycerides. The pre-wetted hydrophilic absorbent powder comprises sodium carboxymethyl cellulose, pectin, gelatin, calcium alginate, sodium alginate, and caprylic / capric triglycerides. The composite plant repair oil comprises a phellodendron amurense lipid dispersion, Lithospermum erythrorhizon-Angelica dahurica extract, borage oil, sandalwood seed oil, borneol, and DL-α-tocopherol. The guaiac nanoliposome lyophilized powder is obtained by sequentially coating a guaiac nanoliposome aqueous dispersion with quaternized chitosan and sodium hyaluronate, then adding a lyophilization protectant and freeze-drying. This invention solves the problems of poor dispersion stability, easy degradation, insufficient soothing and repairing ability of guaiac, and instability in oil-water blends.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

The application relates to a scale-inhibiting alloy and a preparation method thereof and a scale-inhibiting sheet manufactured from the scale-inhibiting alloy. The scale-inhibiting alloy comprises the following components: 55wt%-70wt% of Cu, 15wt%-30wt% of Zn, 5wt%-15wt% of Ni, 0.5wt%-3wt% of Si, 1wt%-5wt% of P, 0.001wt%-0.05wt% of a modifying element, and the balance of inevitable impurities, wherein the modifying element is one or more of B, Ti and Zr. The scale-inhibiting alloy adds the Si element for strengthening, so as to improve the mechanical properties and corrosion resistance; the Zn element is added as a negative electrode and the P element is added as a positive electrode, the alloying forms alpha phase+beta phase+multi-element brittle compound phase, can well excite the active current, and prevents the generation of water scale. The scale-inhibiting alloy has low production cost, meets the comprehensive requirements of cost, processing performance, corrosion resistance, mechanical properties, health and market acceptance of water treatment products, and has a good application prospect.

This invention discloses a topical Chinese medicine preparation for treating erosive tinea pedis and its preparation method, belonging to the technical field of topical Chinese medicine preparations. The preparation consists of 15-25 parts clove, 10-20 parts alum, 20-30 parts Polygonum cuspidatum, and 10-18 parts Psoralea corylifolia, and is prepared into a spray using a 45% low-alcohol countercurrent extraction process. This invention achieves synergistic effects through a three-stage targeting mechanism: eugenol inhibits fungal CYP51A1 enzyme, blocking ergosterol synthesis (targeted enrichment rate 62.1%), resveratrol inhibits the NF-κB pathway, reducing inflammatory response, and psoralen activates the PI3K / AKT pathway, promoting epidermal repair (repair rate 69.2%). The alcohol concentration of the preparation is reduced to 45%, eliminating irritation to broken wounds. A single application takes only 1 minute, and a 7-day treatment course has a clinical efficacy rate of 84.7%, saving 320 yuan per person compared to traditional methods. This invention overcomes the shortcomings of existing drugs for treating erosive tinea pedis, such as strong irritation, cumbersome operation, and limited efficacy, and fills the gap in the category of specialized preparations, with significant social benefits and market prospects.

The invention discloses recombinant human III-type collagen and application thereof, and belongs to the technical field of biochemical engineering. The method comprises the following steps: according to human III-type collagen, obtaining a target amino acid sequence through splitting, and integrating the target amino acid sequence into an expression vector to obtain plasmids; transforming the plasmid into a host, and screening positive clones to obtain an expression strain; and culturing the expression strain, and separating and purifying to obtain the high-yield and high-purity human III-type collagen. The obtained recombinant human III-type collagen has a collagen triple helix region characteristic sequence (Gly-X-Y) n, has good performances of promoting cell migration and adhesion and preventing light damage, and can be widely applied to the fields of medicines, biological materials, health care products, cosmetics and the like.

The invention discloses a dual-stack selection method for DNS (domain name system) area transmission and a related device, a first server respectively sends query requests of authorization start records SOA to a plurality of servers providing area data for the first server, P pieces of response information are obtained after waiting for a first time length, if IP addresses corresponding to the P pieces of response information are IPv4 addresses, the first server sends the query requests to the plurality of servers, and if the IP addresses corresponding to the P pieces of response information are IPv4 addresses, the first server sends the query requests to the plurality of servers; if yes, continuing to wait for a second time length to obtain Q pieces of response information, improving the probability of receiving the response information of the IPv6 address, then preferentially sorting the P pieces of response information and M IP addresses with the same serial number in the Q pieces of response information according to the IPv6 address to obtain a sorting result, and finally sending an area transmission XFR request according to the sorting result, therefore, the first server can preferentially select the server with the IPv6 address to carry out regional data synchronization, and the migration of traffic to an IPv6 network is accelerated.

The invention discloses a polyimide dielectric film containing carboxyl betaine and a preparation method thereof. The carboxyl betaine-containing polyimide dielectric film is prepared from carboxyl betaine-containing polyimide, and the carboxyl betaine-containing polyimide is prepared by the following steps: firstly, taking a precursor of carboxyl betaine, m-phenylenediamine and bisphenol a type diether dianhydride as monomers, and carrying out condensation polymerization to obtain polyamide acid; carrying out complete imidization on the polyamide acid under the action of a catalyst isoquinoline to obtain polyimide containing a precursor; and reacting the polyimide containing the precursor with sodium bromoacetate to obtain polyimide containing carboxyl betaine. The zwitterions are introduced into the polyimide structure to improve the dielectric and energy storage performance of the polyimide dielectric film, and meanwhile, the preparation method has the advantages of being low in cost, simple in process, controllable and adjustable in performance, suitable for large-scale application and the like.

The application discloses a method and application of knocking down ubiquitin-specific peptidase 7 protein, and belongs to the field of biological medicine. The method for knocking down the USP7 protein comprises: specifically inhibiting the expression of USP7 in endothelial cells through gene intervention, and the gene intervention means comprises shRNA, siRNA or recombinant virus carrier-mediated USP7 expression down-regulation. Further provided is a USP7 knockdown reagent for preparing a drug for treating endothelial cell inflammation or a cardiovascular disease, in particular, the USP7 knockdown reagent is a USP7 knockdown virus carrier containing a Cdh5 promoter; the cardiovascular disease comprises heart failure, myocardial infarction or ischemic cardiomyopathy. The application specifically knocks down the expression of USP7 in endothelial cells through gene intervention, significantly improves the migration, tube formation capacity and reduces the apoptosis of the endothelial cells, repairs endothelial dysfunction, the USP7 knockdown virus carrier is used for preparing a drug for treating a cardiovascular disease, and has important clinical value.

The application belongs to the technical field of ship exhaust purification, and particularly relates to a catalyst for decomposing N2O in the exhaust of a ship ammonia internal combustion engine and a preparation method thereof. 3+ By replacing Co ions in the Co3O4 spinel lattice into the lattice, the doping behavior can effectively reduce the number of hydroxyl groups on the surface of the catalyst, significantly weaken the adsorption and combination ability of water molecules, and thus improve the stability of the catalyst in a high-humidity exhaust environment. As an additive, CeO2 uses its oxygen storage capacity to promote the migration and desorption of oxygen species in the reaction, preventing the deactivation of active sites due to oxygen poisoning. The molecular sieve carrier not only provides a highly dispersed surface for the active component to prevent sintering, but also optimizes the adsorption and activation path of N2O and alleviates the poisoning effect of nitrogen-containing intermediate species or impurities in the exhaust on the Co active center during the reaction.

The invention relates to the technical field of high polymer material processing, and discloses a supercritical CO2 assisted devolatilization and microcellular foaming integrated method for preparing optical-grade PMMA (polymethyl methacrylate), which comprises the following steps: conveying a PMMA prepolymer containing a residual methyl methacrylate monomer into a high-pressure reaction kettle to be in contact with supercritical CO2 and saturated; then, the saturated melt is subjected to rapid pressure reduction, CO2 dissolved in the melt is separated out to form a micropore structure, and residual monomers are synchronously brought out; and cooling and shaping to obtain the optical-grade PMMA material. By adopting the method disclosed by the invention, integrated preparation of efficient removal of PMMA residual monomers and micropore lightweight forming can be realized at a lower processing temperature, and the obtained material has lower residual monomer content, lower density, higher light transmittance and lower haze.

The invention relates to the technical field of adhesives, in particular to an electric visbreaking adhesive composition, an adhesive and a product thereof. The electric visbreaking adhesive composition is prepared from the following components in parts by weight: 100 parts of an acrylic polymer, 2 to 15 parts of ionic liquid, 2 to 20 parts of an auxiliary agent and 0.1 to 5 parts of a cross-linking agent, wherein the total weight of monomer components in the acrylic polymer is 100 wt%, and the acrylic polymer contains 5-35 wt% of a nitrogen-containing monomer. In the electric visbreaking adhesive composition disclosed by the invention, a proper amount of nitrogen-containing monomer is introduced into the acrylic polymer, so that the compatibility of the acrylic polymer and the ionic liquid can be effectively improved, the ionic liquid is prevented from being separated out and participates in constructing an ionic migration channel, and the electric visbreaking effect is improved; the introduction of the auxiliary agent can promote the migration of the ionic liquid in a polymer network and improve the electric visbreaking response speed of the adhesive.

The invention belongs to the field of PET (Polyethylene Terephthalate) sheets, and discloses a PET anti-fog antibacterial sheet and a production process thereof. The anti-fogging PET material is prepared from the following raw materials in parts by weight: 72 to 85 parts of PET resin, 3 to 8 parts of antibacterial master batch, 2 to 5 parts of polyglycerol fatty acid ester-chitosan composite anti-fogging additive, 1 to 4 parts of flexibilizer, 0.5 to 2.0 parts of antistatic agent, 1 to 3 parts of compatilizer, 0.3 to 1.0 part of lubricant, 0.2 to 0.8 part of release agent, 0.2 to 0.8 part of antioxidant and 0.5 to 1.5 parts of trehalose modified nano silicon dioxide. The problems that existing traditional PET agricultural product packaging only depends on punching for ventilation and water permeation, the problems of water condensation and fogging cannot be solved, and agricultural product decay is accelerated are solved, and the problems that a PET sheet produced through a traditional coating technology is poor in anti-fogging effect, an anti-fogging coating is prone to falling off, and food safety is affected are solved.

The application discloses a gradient electron regulation type noble metal-transition metal bifunctional catalyst and a preparation method and application thereof, and comprises active metal components A, auxiliary active metal components B, oxide carriers C and surface electron regulation components D. In the application, the noble metal is enriched on the outer layer of the carrier, directly participates in the surface catalytic reaction, the catalytic efficiency of unit mass noble metal is significantly improved, and excellent hydrogenation and dehydrogenation performance can be realized. The inner layer transition metal promotes hydrogen overflow and hydrogenation activity, the outer layer noble metal provides efficient dehydrogenation sites, and the two realize ordered division and cooperation in space through the gradient distribution structure, thereby solving the problem of disordered distribution of traditional two metals and insufficient cooperation effect. The gradient distribution structure reduces the migration and agglomeration tendency of metal particles in high-temperature circulation, the oxygen vacancies and basic sites of the oxide carrier inhibit carbon deposition, and the catalyst can maintain high activity and stability in multiple hydrogenation-dehydrogenation cycles, and the cycle life is significantly better than that of a conventional co-impregnated bimetallic catalyst.