5811 results about "Imidazole" patented technology

The invention relates to a dialkyl imidazole bionic lipid compound and a preparation method and application thereof.The structure of the dialkyl imidazole bionic lipid compound imitates natural phospholipid design, alkyl with no less than 10 carbon atoms is modified on the fourth site and the fifth site of imidazole, and primary amines with different alkyl chain lengths are modified on the second site; the dialkyl imidazole bionic lipid compound is mixed with a therapeutic drug and other auxiliary materials to prepare lipid nanoparticles loaded with the therapeutic drug, and the lipid nanoparticles can be used as a drug delivery system for preparation of brain-targeted drugs. The dialkyl imidazole bionic lipid has the function of dynamically regulating and controlling the blood-brain barrier, and can realize reversible opening of the blood-brain barrier; the formed drug-loaded lipid composition can pass through a blood brain barrier and well realize brain-targeted delivery of loaded therapeutic drugs; the drug-loaded lipid composition composed of the dialkyl imidazole bionic lipid belongs to a new generation of bionic nano-drug carriers, and provides a new strategy for realizing brain-targeted delivery of different types of drugs.

The invention provides a high-temperature-resistant and high-salt-resistant nano imbibition agent as well as a preparation method and application thereof. The high-temperature-resistant and high-salt-resistant nano imbibition agent is prepared from amination modified mesoporous silica nanoparticles, nano cellulose, rhamnolipid, an anionic surfactant, citrate modified sodium zirconium phosphate, polyethylene glycol-b-polycaprolactone and a sulfydryl-carboxyl imidazoline derivative, therefore, the composite carrier formed by the aminated mesoporous silica nanoparticles and the nanocellulose has high mechanical strength and uniform dispersity, the oil-water interfacial tension is reduced through the synergistic effect of the rhamnolipid and the anionic surfactant, and the crude oil stripping efficiency is remarkably improved; the citrate modified sodium zirconium phosphate enables the salt resistance of the system to be greatly improved, and in a high-temperature and high-salt oil reservoir environment, the nano imbibition agent can remarkably improve the crude oil recovery rate and reduce the injection pressure and dosage; meanwhile, good adsorption resistance is achieved, and reservoir blockage is prevented; in addition, low-toxicity corrosion inhibition components protect equipment, and the service life of an oil well is prolonged.

The invention relates to the technical field of adsorbents, and particularly discloses an aluminum oxide type adsorbent and a preparation method thereof.The preparation method comprises the following steps that lanthanum salt, cerium salt and a polyethylene glycol aqueous solution are mixed to be uniform, then the mixture is mixed with gamma-Al2O3 to be uniform, pH is adjusted, standing is conducted, solid-liquid separation is conducted, drying and roasting are conducted, and a double-doped carrier is obtained; dispersing the double-doped carrier in a mixed solution containing 2-methylimidazole, ferric salt and zinc salt, adjusting the pH value, carrying out heating reaction, solid-liquid separation and drying in an inert atmosphere, grinding to obtain powder, and carrying out molding treatment on the powder to obtain a composite carrier; uniformly mixing the Ag modified molecular sieve with silica sol, coating the surface of the composite carrier with the mixture, and drying to obtain an adsorbent precursor; dipping an adsorbent precursor in the dispersion liquid, and after dipping, solid-liquid separation and drying, reactivating to obtain the aluminum oxide type adsorbent; the prepared adsorbent can synergistically and efficiently remove multiple impurities and is excellent in corrosion resistance.

The invention discloses a scratch repair coating and a preparation method thereof, and relates to the technical field of high polymer materials. When the scratch repair coating is prepared, hydroxylated boron nitride reacts with 1-(3-triethoxysilylpropyl)-2-imidazoline to prepare pre-modified boron nitride, and then the pre-modified boron nitride and 4-chloro-1-butene are subjected to quaternization to prepare modified boron nitride; the preparation method comprises the following steps: reacting styryl phosphonic dichloride with 4, 4, 5, 5, 6, 6, 7, 7, 7-nonafluoro-1, 2-heptanediol to prepare a hydroxyl-terminated phosphorus-fluorine-containing polymer; the preparation method comprises the following steps: reacting isophorone diisocyanate with a hydroxyl-terminated phosphorus and fluorine-containing polymer to prepare a polyurethane prepolymer; reacting the polyurethane prepolymer with hydroxyl-terminated coumarin to generate modified polyurethane; and uniformly mixing the modified polyurethane, the modified boron nitride and a photoinitiator to prepare the scratch repair coating. The scratch repairing coating prepared by the invention has good self-repairing performance, flame retardant property, corrosion resistance and mechanical property.

The invention relates to the technical field of lithium-sulfur batteries, and discloses a sulfonyl ZIF-8 metal organic framework material, a lithium-sulfur battery diaphragm and a preparation method of the lithium-sulfur battery diaphragm. The preparation method of the sulfonyl ZIF-8 metal organic framework material comprises the following steps: dissolving a metal precursor and a mixed ligand in an organic solvent, and carrying out a coordination reaction under the action of organic alkali; solid is collected, washed and dried, and the sulfonic group ZIF-8 metal organic framework material is obtained. The metal precursor is soluble zinc salt; the mixed ligand comprises 2-methylimidazole and an imidazole derivative containing a sulfonic acid group. The sulfo group ZIF-8 metal organic framework material is prepared through a ligand doping strategy and is used for functional modification of the lithium-sulfur battery diaphragm; the shuttle behavior of lithium polysulfide (LiPS) can be effectively inhibited through the electrostatic repulsion effect of sulfonic acid groups and the synergistic effect of high-polarity adsorption sites; and the migration of Li < + > and the conversion efficiency of LiPS are remarkably promoted by an efficient ion transmission network, so that the cycle performance of the lithium-sulfur battery is improved.

The present application relates to a kind of dihydrocarbylimidazole biomimetic lipid compound and its preparation method and application, dihydrocarbylimidazole biomimetic lipid compound structure imitates natural phospholipid design, modification is not less than 10 carbon atoms alkyl on the 4th and 5th of imidazole, and modification is different alkyl chain length primary amine on 2nd position;Dihydrocarbylimidazole biomimetic lipid compound is mixed with therapeutic drug and other adjuvant, can be prepared to be loaded in the lipid nanoparticle of therapeutic drug, can be used as drug delivery system for the preparation of brain-targeted drug.Dihydrocarbylimidazole biomimetic lipid has the function of dynamic control blood-brain barrier, can realize the reversible opening of blood-brain barrier;Formed drug-loaded lipid composition can cross blood-brain barrier and better realize the brain-targeted delivery of loaded therapeutic drug;Drug-loaded lipid composition consisting of dihydrocarbylimidazole biomimetic lipid belongs to a new generation of biomimetic nanomedicine carrier, provides new strategy for realizing the brain-targeted delivery of different kinds of drugs.

The invention provides a composite reagent system and a chalcopyrite and sphalerite collecting method, and belongs to the technical field of mineral processing. The composite reagent system comprises a histidine derived functional group collecting agent and a black agent, and the histidine derived functional group collecting agent (containing a total sulfur ester group, a sulfydryl functional group and a side chain imidazole ring) serves as a core and is compounded with the black agent according to a specific proportion to form a target combination-synergistic interaction flotation mechanism. The histidine derivative collecting agent derives high-activity functional groups under the alkaline condition, and after sulfydryl is dissociated, stable chemical bonds are formed by the dissociated sulfydryl and metal ions on the surfaces of the chalcopyrite and the zinc sulfide. The black powder serves as an auxiliary collecting agent, and the collecting capacity of fine-grain or low-activity sulfide minerals is enhanced through chemical adsorption of dithiophosphate radicals and metal ions on the surfaces of the chalcopyrite and the sphalerite. After the two components are compounded, the selective enrichment efficiency of copper-zinc minerals in the flotation process is remarkably improved.

The invention relates to the technical field of proton exchange membrane fuel cell cathode catalysts, and discloses a nanoscale high-entropy intermetallic compound catalyst and a preparation method and application thereof. According to the nanoscale high-entropy intermetallic compound catalyst, a nitrogen-doped porous carbon material derived from zeolite imidazole skeleton-8 is taken as a carrier, and the metal elements of a high-entropy intermetallic compound comprise platinum, copper, cobalt, nickel and iron or platinum, ruthenium, copper, cobalt, nickel and iron. The preparation method of the catalyst comprises the following steps: step 1, preparing a zeolite imidazole framework 8; 2, preparing and purifying a nitrogen-doped porous carbon material carrier; step 3, loading a metal precursor; and 4, preparing the nano-scale high-entropy intermetallic compound catalyst. Nanoscale, high dispersity and structure ordering of the high-entropy intermetallic compound are achieved, the high-entropy intermetallic compound serves as a PEMFC cathode catalyst, the ORR quality activity and durability can be remarkably improved, and Pt loading capacity and cost are effectively reduced.

The invention provides a thermal interface material based on vinyl imidazole ionic liquid as well as a preparation method and application of the thermal interface material. The thermal interface material is prepared from the following raw materials: the vinyl imidazole ionic liquid, a heat-conducting filler subjected to surface treatment by a silane coupling agent, an initiator and a cross-linking agent. The thermal interface material is based on the vinyl imidazole ionic liquid and the heat-conducting filler, the limitation of a traditional thermal interface material base body is broken through, dispensing can be achieved, no solvent is needed in the preparation process, the adverse effect of solvent residues on the performance of a chip when the thermal interface material is applied to the chip subsequently can be avoided, and the thermal interface material has ideal interface bonding strength; the heat conduction effect is remarkable and stable, the heat stability is good, the material can be well attached to an interface, the problems of stress concentration, cracks and the like are not prone to occurring, and the material can be widely applied to the heat conduction and heat dissipation fields of aerospace, advanced energy, electronic information, military industry and the like.

The invention discloses application of 4, 5-dialkyl imidazole cationic lipid in a drug brain delivery carrier, and belongs to the field of drug delivery. The 4-site and the 5-site of imidazole are respectively modified with alkyl with not less than 10 carbon atoms to form the 4, 5-dialkyl imidazole cationic lipid. The 1, 4, 5-dialkyl imidazole cationic lipid is mixed with a therapeutic drug and other lipid auxiliary materials to prepare drug-loaded lipid nanoparticles loaded with the therapeutic drug, and the drug-loaded lipid nanoparticles can be used as a drug delivery system for brain delivery of the therapeutic drug. The 1, 4, 5-dialkyl imidazole cationic lipid has the function of dynamically regulating and controlling opening and closing of a blood brain barrier, and reversible opening of the blood brain barrier can be achieved; the formed drug carrier can pass through a blood brain barrier and well realize brain delivery of loaded therapeutic drugs, and a new strategy is provided for brain delivery of different types of drugs.

The invention relates to the field of plastic bags, and discloses a biodegradable plastic bag and a preparation method thereof, the biodegradable plastic bag comprises polylactic acid, poly (butylene adipate-co-terephthalate), a functional additive, modified starch, a lubricant and an antioxidant; the functional additive is prepared by grafting hydroxylated modified castor oil and isocyanated montmorillonite loaded titanium dioxide; the hydroxylation modified castor oil is prepared by modifying castor oil with chloroethyl isocyanate, then reacting with N-allylimidazole, and then reacting with 6-mercaptohexyl-1-alcohol; the isocyanated montmorillonite loaded titanium dioxide is prepared by reacting montmorillonite loaded titanium dioxide obtained by a sol-gel method with isophorone diisocyanate; the modified starch is prepared by reacting octadecanoyl chloride and acryloyl chloride with starch, then carrying out graft copolymerization with ethyl acrylate and further introducing glycidyl methacrylate, so that the plastic bag is endowed with excellent mechanical properties, biodegradability and antibacterial property.

The invention provides a technical application method for strengthening oxidation performance of Fenton reaction by a defect-rich carbon-based cocatalyst, and relates to the technical field of advanced oxidation catalysts for sewage treatment. Zinc nitrate and 2-methylimidazole are assembled in a methanol solution through a template method, a ZIF-8 material is obtained after centrifugal cleaning, the ZIF-8 is further carbonized through pyrolysis, Zn element is evaporated in the pyrolysis process, a porous and defect-rich carbon-based cocatalyst is obtained, the porous and defect-rich carbon-based cocatalyst is introduced into a Fenton oxidation system, circulation of Fe < 3 + > / Fe < 2 + > in the Fenton reaction can be efficiently promoted, and the catalytic activity of the catalyst is improved. Fe < 2 + > regeneration is enhanced, and the generation capability of active species of a Fenton reaction system is enhanced, so that the removal efficiency of pollutants in water is improved.

The invention belongs to the technical field of new materials, and discloses a polyolefin dissolving agent as well as a preparation method and application thereof. The cleaning agent is composed of modified long-carbon-chain imidazole dinitrile amine salt, modified long-carbon-chain imidazole long-carbon-chain anion salt, betaine salt, imidazole acetate, imidazole long-carbon-chain anion salt, quaternary ammonium long-carbon-chain anion salt, imidazole bis (fluorosulfonyl) imide salt, imidazole hexafluorophosphate and long-carbon-chain anion and cation liquid. Under the condition of 180-210 DEG C, polyolefin (PP or PE) with the molecular weight of 50-8 million can be dissolved by adopting the polyolefin dissolving agent disclosed by the invention, and effective extrusion can be realized by adopting a twin-screw extruder after dissolution. After PP / PE powder is dissolved by adopting the polyolefin dissolving agent disclosed by the invention, sheet casting or spinning is carried out, casting sheets or PP / PE fibers are washed by using ethanol / dichloromethane / hydrocarbon / tetrachloroethylene to remove ionic liquid, and a polyolefin diaphragm or polyolefin fibers can be prepared.

The invention discloses a two-phase electrolyte, a preparation method thereof and a liquid energy storage battery system, and belongs to the technical field of electrochemical energy storage. According to the invention, a liquid-liquid double-phase electrolyte is composed of a water-phase electrolyte and an organic-phase electrolyte, wherein the organic-phase electrolyte contains a coupling system of 1-(methyl-decyl)-3-methylimidazolium bromide, tris (methyl-decyl) methyl ammonium bromide and (10-octadecyl) alkyl trimethyl ammonium bromide in a molar ratio of (5-7): (2-4): 1. During charging, positive electrode bromide ions are subjected to an oxidation reaction to generate a bromine simple substance, and meanwhile, the bromine simple substance and a coupling system of the quaternary ammonium bromide compound and the bromine complexing agent provided by the invention form a stable polybromine complex product, so that the polybromine complex product is prevented from being migrated into a water-phase electrolyte, and the purpose of improving the stability of the water-phase electrolyte in the absence of a diaphragm is achieved. The self-discharge reaction of bromine is significantly inhibited at a high temperature exceeding the boiling point temperature of bromine, the coulombic efficiency and energy efficiency of the liquid energy storage battery are improved, the system cost is reduced, and the long-term cycle stability of the liquid energy storage battery is improved.

The invention relates to a preparation method of a terephthalic acid and 2-methylimidazole organic framework catalyst, and relates to a preparation method of a high polymer material catalyst, the preparation method comprises the following steps: weighing C6H4 (COOH) 2 and 2-methylimidazole, dissolving C6H4 (COOH) 2 and C4H6N2 in N, N-dimethylformamide (DMF), weighing zinc nitrate hexahydrate (Zn (NO3) 2.6 H2O), dissolving in DMF, and preparing into a solution; the preparation method comprises the following steps: mixing a C6H4 (COOH) 2 solution and a C4H6N2 solution in proportion, and uniformly stirring; slowly adding the mixed ligand solution into a mixed solution of zinc nitrate hexahydrate (Zn (NO). 6HO) dissolved in DMF (Dimethyl Formamide), and transferring into a high-pressure reaction kettle for reaction; after cooling, centrifugally separating to obtain a white solid product, washing with methanol, and drying to obtain the Zn-MOF catalyst. The Zn-MOF catalyst provided by the invention can be widely applied to polyester synthesis, esterification reaction and other organic catalytic reactions, and especially has significant advantages in PBAT synthesis.

The invention discloses a preparation method and application of a safe electrolyte, and belongs to the technical field of electrolytes.The preparation method comprises the steps that a carbonic ester solvent, imidazolyl ionic liquid, a lithium salt and a composite additive are dried and dewatered, the carbonic ester solvent and the imidazolyl ionic liquid are prepared into an electrolyte organic solvent in a water-free and oxygen-free glove box, and the electrolyte organic solvent is added into a lithium ion battery; adding the lithium salt and the composite additive into the electrolyte organic solvent, and uniformly mixing to obtain the safe electrolyte; the safe electrolyte keeps the liquid-state high ionic conductivity characteristic in a normal working temperature interval, liquid-solid phase change is rapidly generated when the temperature of the battery rises to a critical threshold value, a three-dimensional net-shaped solid-state barrier layer is formed, a lithium ion transmission path is cut off so as to restrain the hot chain reaction, meanwhile, lithium fluoride salt with dynamic coordination capacity is introduced into the safe electrolyte system, and therefore the safety performance of the lithium ion battery is improved. A stable oxidation-reduction potential window is maintained in the phase change process, the integrity of electrical performance after high-temperature phase change is ensured, the electrolyte reversibly recovers to be in a liquid state after cooling, and the performance of the battery is basically not attenuated.

The invention discloses an in-situ growth MOFs (Metal-Organic Frameworks) mixed matrix membrane as well as a method and application thereof, and belongs to the technical field of membrane separation. The method disclosed by the invention comprises the following steps: adding a Zn source and 2-methylimidazole into a solvent, and carrying out hydrothermal reaction to obtain Polymer-ZIF-8; the preparation method comprises the following steps: mixing Polymer-ZIF-8 with a diluent, and sequentially heating, uniformly mixing and cooling, so as to obtain a Polymer-ZIF-8 / diluent uniform block; the Polymer-ZIF-8 / diluent uniform block is subjected to post-treatment, and the MOFs mixed matrix membrane is obtained; the Zn source is a zinc ion type polymer. The method overcomes the problem of interfacial compatibility in mixed matrix membranes.

The application discloses a kind of ship super-long anticorrosion special nano powder coating, preparation method and application, belong to ship heavy anticorrosion material technical field.The preparation method of the ship super-long anticorrosion special nano powder coating is as follows: epoxy resin, graphene modified epoxy resin, core-shell structure ZnO@SiO2, modified 2,5-dimercapto-1,3,4-thiadiazole, borosilicate glass powder, flaky boron nitride, silane coupling agent modified silica, phenolic amine curing agent, 2-ethyl-4-methylimidazole, fumed silica, defoaming agent, ultraviolet absorber, high-temperature pigment are put into stirrer and stirred for 20-30min, then melt extrusion is carried out through double screw extruder, the extrusion temperature is 90-110 DEG C, grinds and sieves, and the ship super-long anticorrosion special nano powder coating is obtained.The coating prepared by the application has good anticorrosion performance and can be applied in the field of ship metal surface corrosion protection.

The invention provides a toughened curing-controllable prepreg and a preparation method thereof, and belongs to the technical field of high-performance composite materials. Comprising the following components in parts by mass: 100 parts of epoxy resin, 100 parts of a thermoplastic resin toughening agent, 100 parts of an inorganic nanoparticle toughening agent, 100 parts of a latent curing agent, 100 parts of an organic urea accelerant, 100 parts of an imidazole accelerant and 100 parts of a reactive diluent, correspondingly, 1-5 parts by mass of a thermoplastic resin flexibilizer, 0-3 parts by mass of an inorganic nanoparticle flexibilizer, 4-8 parts by mass of a latent curing agent, 1-4 parts by mass of an organic urea accelerator, 0.1-0.5 part by mass of an imidazole accelerator and 5-20 parts by mass of an active diluent are added. The prepreg provided by the invention not only is endowed with fast curing and controllable curing time, but also is endowed with relatively long room-temperature storage period, high toughness and good impact resistance, and is especially suitable for the fields of low-altitude aircrafts, automobiles, ships and the like.

The invention relates to the field of automobile part manufacturing, and particularly discloses a barrier layer direct bonding type TPE material for an automobile air conditioner pipeline system and a preparation method and application of the barrier layer direct bonding type TPE material. The TPE material is prepared from the following raw materials: a thermoplastic elastomer TPE, PA, EVOH, polyether block amide, a glycidyl methacrylate grafted olefin copolymer elastomer, a toughening compatilizer, composite modified montmorillonite, a cold-resistant additive, an antioxidant and paraffin oil. Wherein the composite silane coupling agent, lauric acid and N, N '-carbonyldiimidazole are adopted to modify the nano-montmorillonite, so that the dispersity of nano-montmorillonite particles is improved, the formation of aggregates is effectively reduced, and the mechanical property of the material is enhanced; the polyether block amide, the glycidyl methacrylate grafted olefin copolymer elastomer and the toughening compatilizer have a synergistic effect, so that good adhesiveness of the TPE material and the barrier layer is realized.

The invention relates to the technical field of collagen peptide extraction, and particularly discloses aquatic collagen tripeptide and a processing technology thereof, and the processing technology comprises the following steps: step S1, fish skin pretreatment; step S2, performing enzymolysis; step S3, fermentation; step S4, separation and purification; starting from three aspects, firstly, a modified degreasing agent is added in the degreasing treatment process, the modified degreasing agent takes 1-ethyl-3-methylimidazole acetate, zinc phytate and calcium citrate as main components according to a specific mass ratio, and secondly, gel emulsion is added in the enzymolysis process, so that the modified degreasing agent is prepared. The gel emulsion has an oil gel structure, grape seed oil and sodium lignin sulfonate, and 3, a composite strain is added in the fermentation process, the composite strain is prepared by mixing bacillus natto and lactobacillus plantarum according to a specific proportion, and the purity and the extraction rate of the aquatic collagen tripeptide are improved through the synergistic effect of all the procedures.

The invention discloses an acid liquid system based on synergistic interaction of a corrosion inhibitor and an iron stabilizer and a preparation method, and relates to the technical field of oilfield chemistry, the acid liquid system comprises the following components by mass: 10%-20% of an acid liquid, 0.5%-3% of a composite corrosion inhibitor, 0.5%-2% of an iron stabilizer, 0.1%-0.5% of a discharge aiding agent, 0.2%-0.8% of an acid thickening agent, and the balance of water; the main component of the composite corrosion inhibitor in the acid liquid system is long-chain alkyl bis-imidazoline-thiadiazole amide hydroxypropyl sulfobetaine, and the composite corrosion inhibitor contains a bis-imidazoline ring and a thiadiazole amide ring, and can form more stable multi-active-site adsorption on the metal surface to form a compact and stable protective film, so that the metal surface corrosion resistance is improved, and the metal surface corrosion resistance is improved. Long carbon chains in molecules can effectively block corrosive media, N, O and S heteroatoms in the molecules are adsorbed on the iron surface through lone pair electrons to inhibit corrosion, the slow-release effect is further enhanced, and therefore the slow-release efficiency is improved by 40% or above.

The invention belongs to the technical field of hot melt adhesives, and discloses a polyurethane hot melt adhesive as well as a preparation method and application thereof. The polyurethane hot melt adhesive is prepared from the following raw materials: polyester polyol, polyether polyol, fluorine-containing dihydric alcohol, isocyanate, a chain extender, a catalyst and a modified montmorillonite antibacterial filler, the preparation method of the modified montmorillonite antibacterial filler comprises the following steps: modifying montmorillonite through sulfur-containing amino acid, increasing the interlayer spacing of the montmorillonite through an intercalator, entering the interlayer spacing of the montmorillonite through a metal organic framework synthesized by imidazole or an imidazole derivative and zinc salt, and carrying out surface modification to obtain the modified montmorillonite antibacterial filler. A silver-ammonia solution is treated by a reducing agent, so that the nano-silver is loaded on the montmorillonite and in the surface, the skeleton and the pores of the MOFs material. The polyurethane hot melt adhesive disclosed by the invention not only has high peel strength, but also has excellent waterproofness and lasting antibacterial property.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The invention discloses an SERS (Surface Enhanced Raman Scattering) substrate with a needle-like diagram nanostructure and a preparation method of the SERS substrate, and belongs to the field of nanotechnology and detection. The preparation method of the needle-like Turing nano-structure SERS substrate comprises the following steps: by taking a silver needle as a carrier, carrying out electrochemical etching on the surface of the silver needle to induce to form a Turing nano-structure with fractal topological characteristics, and then inducing to conformally grow a layer of zeolite imidazole framework-8 material as a shell layer by utilizing the nano curvature characteristics of the fractal structure, so as to prepare the needle-like Turing nano-structure SERS substrate. And a composite SERS enhanced platform with an electromagnetic field hot spot aggregation effect and a molecular screening and enriching capability is constructed. The platform has the advantages of high structural uniformity, expandability in manufacturing, synergy of signal enhancement and molecular recognition and the like, remarkably improves the detection sensitivity and the signal reproducibility, and is suitable for trace analysis in a complex sample system, such as related application in the fields of food safety, environmental pollution monitoring, biomedicine and the like.

Disclosed are an ionic liquid-based perfluorinated high-voltage-resistant lithium battery electrolyte and a preparation method therefor. The high-voltage-resistant electrolyte is composed of an imidazolyl ionic liquid, a lithium salt, and an electrolyte additive. The ionic liquid-based electrolyte has relatively reversible and stable lithium stripping / deposition performance, exhibits good compatibility with a lithium metal / graphite negative electrode, and can also form a highly fluorinated stable electrode-electrolyte interface (CEI / SEI layer), thus improving the compatibility of the ionic liquid electrolyte with a high-voltage lithium cobaltate positive electrode, and effectively inhibiting dendrite formation and oxidation dissolution of the electrolyte, thereby achieving extremely high cycle stability and Coulombic efficiency of a lithium battery under high voltage conditions.

The invention relates to the technical field of high-molecular compounds, and discloses an epoxy resin material for a high-pressure conduit and a preparation method of the epoxy resin material. The preparation method comprises the following steps: preparing the following raw materials in parts by mass: 65-70 parts of bisphenol A epoxy resin; 55-60 parts of a curing agent; 0.1 to 0.2 part of an imidazole accelerant; 10 to 15 parts of a reactive diluent; and 8 to 15 parts of epoxy silicon dioxide. The diluent is prepared from N, N, N ', N'-tetraepoxypropyl-4, 4 '-diaminodiphenylmethane and ethylene glycol diglycidyl ether according to the mass ratio of 1 to (4 to 5); the curing agent comprises a polybenzimidazole curing agent, a polyethylene glycol curing agent and methyl tetrahydrophthalic anhydride in a mass ratio of (2-3): (2-3): (5-6). The epoxy resin material prepared by the invention has excellent electrical properties and mechanical properties.

The invention relates to the technical field of adhesive tapes, and particularly discloses a UV (ultraviolet) visbreaking anti-acid adhesive tape for thinning flexible glass and a preparation process of the UV visbreaking anti-acid adhesive tape. A UV viscosity-reducing acid-resistant adhesive tape for thinning flexible glass comprises a base material layer, a pressure-sensitive adhesive layer and a release film layer which are stacked in sequence, and the pressure-sensitive adhesive layer is prepared from the following raw materials: 85-120 parts by mass of an acrylate copolymer, 3-5 parts by mass of a cross-linking agent, 1.5-2.5 parts by mass of a photoinitiator, 2-5 parts by mass of an acid-resistant nano filler and 0.2-0.4 part by mass of an amine catalyst; the acrylate copolymer is prepared from the following raw materials in parts by mass: 20-30 parts of an imidazolinyl-containing monomer, 15-25 parts of a large-steric-hindrance alkyl-containing monomer, 45-55 parts of a flexible monomer and 5-10 parts of a carboxyl-containing monomer. The UV visbreaking acid-resistant agent prepared by the invention has relatively good acid resistance and reliable UV visbreaking and high initial bonding balance.

The invention relates to the technical field of metal working fluids, in particular to a degradable environment-friendly vegetable oil-based semi-synthetic cutting fluid and a preparation method thereof. The cutting fluid comprises 20-30 parts of vegetable lubricating oil, 10-20 parts of an alkali storage agent, 2-5 parts of a corrosion inhibitor, 3-5 parts of a coupling agent, 5-8 parts of a surfactant and 6-11 parts of a composite anti-rust agent, the composite anti-rust agent comprises an anti-rust agent A and an anti-rust agent B, the anti-rust agent A comprises N-[3-(dimethylamino) propyl]-N, N-dimethylformamide, and the anti-rust agent B comprises N-[3-(dimethylamino) propyl]-N, N-dimethylformamide. The antirust agent A comprises at least one of N, N ', N'-trimethyl-1, 3-propanediamine, benzotriazole, sebacic acid and 2, 4, 6-tri (aminocaproic acid)-1, 3, 5-triazine, and the antirust agent B comprises at least one of an imidazoline compound and fatty acid sarcosine ester. The cutting fluid provided by the invention has excellent corrosion resistance, rust resistance, defoaming property, biodegradability and storage stability, and has a good application prospect.

The invention discloses a palladium catalyst as well as a preparation method and application thereof. The structural formula of the palladium catalyst is shown as a formula (I), according to the invention, an alkoxy group is introduced into the skeleton of the palladium catalyst and N-methylimidazole is coordinated with palladium, so that the catalytic yield of the palladium catalyst is effectively improved, and long-chain alkyl polyarylamine with high molecular weight and narrow distribution is obtained; the method does not need to use a traditional phosphine ligand, avoids potential hazards of phosphine compounds to operators and the environment in the use process, and is expected to be industrially applied on a large scale due to the fact that the phosphine compounds are stable to air and moisture and can be stored for a long time.