24 results about "Dicyanamide" patented technology

The present application belongs to the technical field of coatings, and specifically relates to a modified nano-aluminum powder, a preparation method therefor, an epoxy resin coating having functions of being electrically and thermally conductive and a preparation method therefor. The epoxy resin coating of the present application comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 27-51 parts of a waterborne epoxy resin, 2-6 parts of modified nano-aluminum powder, 1-3 parts of active flake graphite, 10-20 parts of a solvent, 6-14 parts of a diluent, 0.1-0.3 part of a defoamer, and 0.1-0.3 part of a leveling agent, and the component B comprises the following component in parts by weight: 5-15 parts of a curing agent. Raw materials of the modified nano-aluminum powder comprise the following components in parts by weight: 2-6 parts of a nano-aluminum powder and 1-4 parts of an ionic liquid, the ionic liquid being 1-methylimidazolium tetrafluoroborate or 1-ethyl-3-methylimidazolium dicyanamide. The present application solves the problem in the prior art of poor electrical conductivity and thermal conductivity of epoxy resin coatings.

The invention discloses an ether-functionalized urotropine onium dicyandiamide salt as well as a preparation method and application thereof, and belongs to the technical field of electrolyte additives, the structural general formula of the ether-functionalized urotropine onium dicyandiamide salt is [RUr] DCA, a cation part is an ether-functionalized urotropine onium ion [RUr] < + >, Ur represents a urotropine mother nucleus, R represents an ether-functionalized side chain, and an anion part is a dicyandiamide ion DCA <->. The preparation method comprises the following steps: carrying out quaternization reaction on urotropine and brominated ether hydrocarbon in an organic solvent to generate an ether-functionalized urotropine onium bromide intermediate; and carrying out anion exchange reaction on the obtained intermediate and dicyandiamide salt to obtain a target product. According to the invention, the ether-functionalized urotropine onium dicyandiamide salt is added into the electrolyte and is used as a nitrogen-rich electrolyte additive, so that the formation of a stable SEI (solid electrolyte interface) membrane is promoted, and the performance and the cycling stability of the lithium battery are improved.

The objective is to provide a lubricating oil composition that has low volatility and excellent anti-foaming properties under reduced pressure. [Solution] The present invention relates to a lubricating oil composition comprising an ionic liquid (X) consisting of an anion (A) and a cation (B), wherein the anion (A) is at least one anion selected from the group consisting of alkyl carboxylate anions, alkyl sulfonate anions, dialkyl phosphate anions, dicyanamide anions, and thiocyanate anions, the water content in the lubricating oil composition is 50 ppm or less, and the viscosity of the lubricating oil composition at 25°C is 15 to 370 mPa·s.

The invention discloses a flexible gel composite material as well as a preparation method and application thereof.The preparation method comprises the following steps: preparing the following raw materials in percentage by mass: 1 wt.% of a photoinitiator, 0.2 wt.% of a cross-linking agent, 10-60 wt.% of ionic liquid and the balance of chlorinated 1-ethyl-3-methylimidazolium hydroxyethyl acrylate, uniformly mixing the raw materials, putting the mixture into a forming mold, then using an ultraviolet lamp to irradiate and cure the mixture, and drying the mixture to obtain the flexible gel composite material. The flexible gel composite material is obtained; the ionic liquid is one of 1-ethyl-3-methylimidazolium dicyandiamide, 1-ethyl-3-methylimidazolium tetrafluoroborate, 1-ethyl-3-methylimidazolium bis (fluorosulfonyl) imide and 1-ethyl-3-methylimidazolium chloride. According to the preparation method disclosed by the invention, the defects in the prior art are overcome; the prepared flexible gel composite material can be applied to the field of electromagnetic wave absorption and the field of electronic devices.

The invention relates to a method for producing a sorbent, the method comprising the steps of: reacting at least one monomer of an ionic liquid with at least one crosslinker to produce a polymer; modifying the polymer to produce an amine-group-containing polymer, wherein the at least one crosslinker is selected from the group consisting of acrylate, acrylamide, R1-[CH=CH2]n, where R1 = alkyl, aryl, n≥2, and derivatives thereof, wherein the at least one monomer is a monomer of formula 1, formula 1, where R2 is selected from the group consisting of alkyl, alkenyl, and aryl, and X is selected from the group consisting of hydroxyl (OH-), ethyl sulfonate (EtSO4-), dicyanamide (C2N3-), bis(trifluoromethanesulfonyl)amide (TFSI-), CH3COO-, CF3SO3-, R-COO- and -PO(O)(OH)2, -PO(O)(OH)(OR), -PO(O)(OR)2, where R = C1-C6 alkyl. The invention also relates to a sorbent, to the use of the sorbent, and to a method for the sorption of CO2.

The present application relates to the technical field of paint, and proposes an epoxy resin paint with electrically and thermally conductive functions and a preparation method thereof.The epoxy resin paint comprises component A and component B;component A comprises the following components in parts by weight: 27-51 parts of water-based epoxy resin, 2-6 parts of modified nano aluminum powder, 1-3 parts of active flake graphite, 10-20 parts of solvent, 6-14 parts of diluent, 0.1-0.3 parts of defoaming agent, and 0.1-0.3 parts of leveling agent;component B comprises the following components in parts by weight: 5-15 parts of curing agent;the raw material of the modified nano aluminum powder comprises the following components in parts by weight: 2-6 parts of nano aluminum powder and 1-4 parts of ionic liquid;the ionic liquid is 1-methylimidazole tetrafluoroborate or 1-ethyl-3-methylimidazole dicyanamide salt.Through the above technical solution, the problem of poor electrical conductivity and thermal conductivity of the existing epoxy resin paint is solved.

The invention discloses a method for synthesizing a thiosulfonate compound through aerobic oxidative coupling, and relates to the technical field of organic synthesis.The synthesis method comprises the steps that a nitrogen-doped carbon-loaded cobalt-based catalyst is adopted, and in the oxygen or air atmosphere, a sulfydryl-containing compound and sulfonyl hydrazide are catalyzed to be subjected to an oxidative coupling reaction; the preparation process of the catalyst comprises the following steps: reacting cobalt salt with sodium dicyandiamide in a water phase to generate a dicyandiamide cobalt complex; mixing the complex with an ionic liquid containing dicyandiamide anions in proportion, stirring and drying to obtain an ionic liquid precursor of metal cobalt; and carbonizing the obtained precursor at a high temperature of 500-1000 DEG C in an inert atmosphere, etching for 2-10 hours by using a 1-6 mol / L hydrochloric acid solution, washing to be neutral, and drying to obtain the nitrogen-doped carbon-loaded cobalt-based catalyst. The catalyst used in the method is green, economical and recyclable, the reaction process is mild in condition and simple and convenient to operate, the product yield is excellent, and the method has a good application prospect.

This invention relates to an epoxy resin adhesive, its preparation method, and its application. The adhesive comprises 100 parts by weight of epoxy resin, 1-10 parts by weight of dicyandiamide micronized curing agent, 3-20 parts by weight of metal micronized powder, and 10-30 parts by weight of thermoplastic acrylic resin. The adhesive preparation process of this invention does not use solvents, and the adhesive has no irritating odor, meeting environmental protection requirements. It is chemically stable at room temperature, and once used, there is a strong interaction between the adhesive and the composite material, making it difficult to detach. The bonding time is short, and it is easy to manufacture into various shapes, with good adaptability to the bonding site. The adhesive is in a solid state, can be stacked, and can be arbitrarily adapted to the bonding spacing of composite materials, facilitating the bonding process. The composite material bonded by the adhesive is resistant to high temperatures; after high-temperature use, there are no cracks or detachment at the bonding joints, and it still possesses good mechanical properties.

This invention belongs to the field of metallurgical separation technology and relates to a method for separating tungsten and vanadium from high-concentration molybdenum liquid. The method includes: under weakly alkaline conditions, using a first extractant to perform multi-stage countercurrent extraction separation of the liquid to be treated to obtain a vanadium-containing organic phase and a raffinate; under weakly alkaline conditions, sulfiding the raffinate, and then adding a second extractant to separate molybdenum and tungsten; the first extractant includes trioctylmethylammonium chloride, sec-octanol, 1-ethyl-3-methylimidazolium dicyandiamide, n-hexyl mercaptan, and sulfonated kerosene; the second extractant includes methyltrialkylammonium chloride, α-methylstyrene dimer, n-decanol, and sulfonated kerosene; the concentration of molybdenum in the liquid to be treated is not less than 150 g / L, the concentration of tungsten is 1~10 g / L, and the concentration of vanadium is 1~10 g / L. This invention aims to solve the technical problems of low efficiency and easy emulsification in the separation of tungsten and vanadium from high-concentration molybdenum liquid.

The present application provides an adhesive film that can achieve both excellent antistatic properties and corrosion resistance, an adhesive composition that forms an adhesive layer contained in the adhesive film, an optical device including the adhesive film, and an electronic device. The adhesive composition of an embodiment of the present application contains a base polymer and an ionic compound composed of a cationic species and an anionic species, the anionic species being at least one selected from the group consisting of a borate anion and a dicyanamide anion.

The invention relates to an antistatic agent, a polyurethane nanofiber membrane and a preparation method of the polyurethane nanofiber membrane, and the antistatic agent comprises the following components in parts by weight: 60-90 parts of acetate ionic liquid, 5-20 parts of mesylate ionic liquid and 5-20 parts of dicyandiamide salt ionic liquid. When the antistatic agent composed of the three ionic liquids is added into an electrostatic spinning solution, the conductivity of the electrostatic spinning solution can be remarkably improved, the problem of insufficient stability in the electrostatic spinning process is effectively solved, meanwhile, bead formation in the spinning process is inhibited, and finally the polyurethane nanofiber membrane with regular morphology and uniform fiber diameter is prepared. The polyurethane nanofiber membrane has no pinhole defect and is uniform in pore size and distribution, so that the polyurethane nanofiber membrane can be endowed with excellent waterproof performance and air permeability, and the core use requirements of functional textiles on the waterproof and air-permeable membrane are met.

The invention relates to the technical field of sodium ion battery negative electrode materials, in particular to nitrogen and sulfur co-doped carbon nano-microspheres as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a soluble iron salt, a carbon source and an imidazole dinitrile amine salt ionic liquid in water together, and carrying out a hydrothermal reaction to obtain a nitrogen-rich core; mixing the nitrogen-rich core and imidazole hydrogen sulfate ionic liquid to obtain a mixture; loading soluble cobalt salt on the surface of the mixture, and performing pyrolysis to obtain a core-shell structure precursor; and in an NH3 atmosphere, performing heat treatment on the core-shell structure precursor to obtain the nitrogen-sulfur co-doped carbon nano-microsphere with a core-shell partitioned doping structure and gradient expanded interlayer spacing, so that the problems of insufficient interlayer spacing, random doping distribution and poor structural stability of a carbon negative electrode of an existing sodium ion battery are solved. In addition, by means of step-by-step pyrolysis and bimetallic catalysis, the defects that an existing process is complex and not suitable for large-scale preparation are overcome.

The present invention relates to the field of flotation technology, and in particular to a flotation separation method for copper-sulfur polymetallic ore. The flotation separation method for copper-sulfur polymetallic ore of the present invention comprises the following steps: S1, grinding the raw ore to obtain a ground material having chalcopyrite 112, 204, and 312 crystal face exposure ratios of 55% to 65%, 5% to 18%, and 3% to 10%, respectively, and pyrite 100 crystal face exposure ratio of 60% to 80%; S2, mixing the ground material, a collector A, an inhibitor B, and a frother and performing a roughing operation to obtain a roughing concentrate and a roughing tailing; S3, mixing the roughing concentrate and the collector A and performing multiple rounds of concentration to obtain a copper concentrate; S4, performing cascade enhanced flotation on the roughing tailing to obtain a sulfur-containing tailing; the collector A comprises the inhibitor B, sodium cyanamide, sodium dicyanamide, sodium polymelamide, and sodium polysulfide; and the flotation method improves the recovery rate of copper and sulfur.

The invention discloses a spontaneous combustion type 1-vinyl imidazolyl metal-organic framework material as well as a preparation method and application thereof, and provides a metal-organic framework material with structural formulas of M (VIM) 2 (DCA) 2, M (VIM) 4 (DCA) 2 and M (VIM) 2 (BH3CN) 2. The metal-organic framework material can be prepared by reacting a metal salt solution with a 1-vinyl imidazole ligand solution and then adding sodium dicyandiamide or sodium cyanoborohydride for continuous reaction. The prepared metal-organic framework material can spontaneously ignite with strong oxidants such as fuming nitric acid, hydrogen peroxide and dinitrogen tetroxide, the ignition delay time is short, the metal-organic framework material can be used as a fuel component of a solid propellant, the nitrogen content of the obtained metal-organic framework material is high, and the combustion energy of the solid propellant can be improved.

The application belongs to the technical field of transition metal coordination chemistry, and relates to a cobalt complex with ferromagnetic interaction and a preparation method and application thereof. The molecular formula of the cobalt complex is {Co(bim)4[N(CN)2]2} n : wherein bim is 1-allyl imidazole. n The synthesis method of the {Co(bim)4[N(CN)2]2} n includes the following steps: dissolving anhydrous cobalt chloride in anhydrous methanol, adding a bim ligand, stirring, dissolving sodium dicyanamide in water and then adding the sodium dicyanamide into the above solution, filtering after sufficient reaction, and obtaining a red solution. The solution is left to volatilize in air, and the cobalt complex with ferromagnetic interaction can be obtained after several days. The preparation process is safe and simple, controllable and reproducible, and the prepared complex has good stability and high purity. The cobalt ions in the complex have ferromagnetic interaction, and the complex can be used as a molecular-based magnetic material in the field of new high-density information storage equipment.

The invention belongs to the technical field of energetic materials, and particularly relates to a fluorinated graphene / boron composite fuel preparation method, which comprises: S1, placing boron powder and 1-ethyl-3-methylimidazole dinitrile amine salt in a solvent, and uniformly stirring to form a premix; s2, standing the premix, adding 2, 2 '-azobis (isobutylamidine) dihydrochloride and fluorinated graphene, adding a proper amount of solvent to obtain mixed slurry, and heating and stirring the mixed slurry for reaction to obtain a homogeneous mixed solution; and S3, carrying out solid-liquid separation on the homogeneous mixed solution to obtain a solid, washing the solid, and carrying out freeze drying to prepare the fluorinated graphene / boron composite fuel. According to the composite fuel obtained by the preparation method, the set-off heat is greatly improved, and the oxidation reaction is promoted to be fully carried out.

An electrolyte includes a fluorine-containing lithium salt and lithium dicyanamide, and the fluorine-containing lithium salt includes lithium fluorosulfonyl(trifluoromethanesulfonyl)imide. According to embodiments of this application, the electrolyte is improved, so that a lithium salt includes the lithium fluorosulfonyl(trifluoromethanesulfonyl)imide and the lithium dicyanamide, thereby helping to enhance stability of a solid electrolyte interface (SEI) film of a negative electrode. In this way, cycling performance of the electrochemical apparatus is improved, and dynamic performance of the electrolyte is basically not affected.

The application discloses a composition, a film, a photoelectric device and a preparation method of the photoelectric device, and relates to the technical field of photoelectric devices. The composition comprises a semiconductor material and an ionic liquid material, the semiconductor material comprises one or more of an organic compound and a first metal oxide, the ionic liquid material comprises at least one imidazole dicyanamide salt compound, the composition has good solution processing performance, conductivity and performance stability, the composition can be applied to preparation of a photoelectric device, and is beneficial to improving device efficiency, device service life and performance stability of the photoelectric device.

The application discloses a supported nickel-based bimetallic catalyst and a preparation method and application thereof, and comprises the following steps: step one, preparing dicyanamide nickel salt and dicyanamide cobalt salt; step two, according to a certain proportion, an ionic liquid with anion of dicyanamide radical and the dicyanamide nickel salt and the dicyanamide cobalt salt prepared in the step one are weighed, and are stirred and reacted at a certain temperature, and the obtained product is dried to obtain a catalyst precursor; step three, the catalyst precursor obtained in the step two is moved into a tube furnace, is programmed to heat to a set temperature under nitrogen or inert atmosphere and is kept for a certain time, and after acid treatment, a supported nickel-based bimetallic catalyst is obtained. According to the scheme, specific raw materials are selected, and the raw material ratio and related process parameters are strictly controlled, so that the finally obtained supported nickel-based bimetallic catalyst has excellent catalytic performance, and the yield of o-chloro-p-phenylenediamine is obviously improved.

The application relates to the technical field of fertilizer synergists, and discloses an organic nitrogen fertilizer synergist and a preparation method thereof, which comprises the following components in mass fractions: 15-20 parts of potassium humate, 8-12 parts of a plant source compound, 5-8 parts of polyglutamic acid, 3-5 parts of a compound microbial agent, 5-8 parts of sodium alginate oligosaccharide, 12-18 parts of dicyanamide and 25-35 parts of diatomite. In the application, the compound microbial agent can be used to promote the degradation of complex organic molecules such as proteins and starches in the organic nitrogen fertilizer, and the slow mineralization problem of the organic nitrogen is solved; the dicyanamide and ginkgo leaf powder in the plant source compound form a double nitration inhibition system, the conversion of ammonium nitrogen into nitrate nitrogen is blocked from different target points, and nitrogen leaching and ammonia volatilization loss are greatly reduced.

The application discloses ether group functionalized urotropinium dicyanamide salt and a preparation method and application thereof, belongs to the technical field of electrolyte additives, and has a general structure of [RUr]DCA, wherein a cation part is ether group functionalized urotropinium ion [RUr] + , Ur represents a urotropine parent nucleus, R represents an ether group functionalized side chain, and an anion part is dicyanamide ion DCA ‑ . When the ether group functionalized urotropinium dicyanamide salt is prepared, quaternary ammonium reaction is performed on urotropine and bromo ether hydrocarbon in an organic solvent to generate an ether group functionalized urotropinium bromide intermediate; anion exchange reaction is performed on the obtained intermediate and dicyanamide salt to obtain a target product. By adding the ether group functionalized urotropinium dicyanamide salt into an electrolyte, the ether group functionalized urotropinium dicyanamide salt is beneficial to promote the formation of a stable SEI film as a nitrogen-rich electrolyte additive, so that the performance and cycle stability of a lithium battery are improved.

A solid aluminum electrolytic capacitor with good stability comprises a core bag, a shell and a sealing piece, and the core bag is arranged in the shell in a sealed mode through the sealing piece. The core package comprises an anode foil, electrolytic paper and a cathode foil, the electrolytic paper is arranged between the anode foil and the cathode foil, and a conductive high-molecular polymer is formed between the anode foil and the cathode foil; the conductive high-molecular polymer comprises PEDOT: PSS; and the PEDOT: PSS is treated by a mixed solution of NaBH4 and 1-ethyl-3-methylimidazolium dicyanamide salt. According to the invention, after the PEDOT: PSS as the conductive polymer is treated by the mixed solution of NaBH4 and 1-ethyl-3-methylimidazolium dicyanamide salt, the internal resistance is reduced, and the cycle stability is effectively improved.

The present invention relates to a mononuclear cobalt complex coordinated by dicyanamide and its preparation method and application, belonging to the technical field of coordination compounds. The molecular formula of the mononuclear cobalt complex is Co(bim)4[N(CN)2]2, triclinic system, P-1 space group, and unit cell parameters are α=65.607(11)°, β=89.647(12)°, and γ=68.197(12)°. In the mononuclear cobalt complex provided by the present invention, dicyanamide is not used as a stacking block to link cobalt ions, but only as a monodentate ligand to form a mononuclear complex with cobalt ions. At the same time, the complex has paramagnetism, exhibits slow magnetic relaxation performance under an external field, and can be used for the preparation of molecular-based magnetic materials.