539results about How to "High electronegativity" patented technology

The invention discloses fluororesin radiating paint and a preparation method thereof. The paint mainly comprises an electron transfer type organic compound, graphene, a carbon nanotube, titanium white, other additives and fluororesin, wherein the fluororesin is a paint brand having the highest comprehensive property at present; the electron transfer type organic compound can greatly enhance the thermal radiation rate of the paint; the graphene and the carbon nanotube can further accelerate thermal conduction; and the electron transfer type organic compound, the carbon nanotube and the graphene finally form a full three-dimensional network distribution of granules (electron transfer type organic compound), wires (carbon nanotube) and planes (graphene) in a fluid. The fluororesin radiating paint disclosed by the invention has high thermal radiation rate, high thermal conductivity and low thermal resistance, can realize radiation cooling, and simultaneously has the effects of self cleaning, acid / alkali resistance and super high insulativity, thereby having high practical value.

In a Li ion conductivity oxide solid electrolyte containing lithium, lanthanum, and zirconium, a part of oxygen is substituted by an element M (M=N, Cl, S, Se, or Te) having smaller electronegativity than oxygen.

The invention provides a fluorinated silicone rubber anti-pollution flashover coating for extra-high voltage and a preparation method thereof; the fluorinated silicone rubber anti-pollution flashover coating (short for FRTV) has the following compositions by mass percent: 5-30 percent of fluorinated silicone rubber, 10-30 percent of silicon rubber, 4-8 percent of nanometer grade gas-phase white carbon black, 0.5-8 percent of compound fire retardants, 0.2-0.5 percent of firming agent, 0.01-0.05 percent of catalyst, 0.02-0.08 percent of antioxidant, 2-8 percent of flatting agents, 0.2-0.4 percent of de-foaming agent, 0.1-0.5 percent of paint and 30-60 percent of solvent. The compound fire retardant is composed of inorganic aluminium hydroxide and organic decabromodiphenyl oxide, wherein comprising 1-6 percent of the inorganic aluminium hydroxide and 0.5-3 percent of the organic decabromodiphenyl oxide. The preparing process of the coating is simple, and the coating has good weather ability, oil resistance and longer service life.

The invention discloses a chiral tridentate PNN ligand and application of the same in asymmetric hydrogenation and similar reactions. The tridentate nitrogen phosphine ligand disclosed in the invention has been the first reported nitrogen phosphine ligand containing chiral oxazoline so far and has been successfully applied to high-efficiency and high-selectivity hydrogenation and similar reactions of ketone and imine salts. Compared with other ligand, the ligand provided by the invention is simpler in synthetic route, higher in yield and environment-friendlier; moreover, the metal complex of the ligand shows better selectivity and a higher turn-over number in asymmetric hydrogenation. An iridium complex of the chiral tridentate PNN ligand has successfully realized asymmetric reduction of beta-ketone ester into beta-alcohol ester (which is a raw material for synthesis of molecular drugs duloxetine and atomoxetine), asymmetric hydrogenation of alpha-hydroxyacetophenone into alpha-hydroxyphenylethyl alcohol and asymmetric hydrogenation of acetophenone into phenylethyl alcohol, which is of important significance to production of the medical industry.

The invention discloses a method for preparing a hydrogenation catalyst. The catalyst contains auxiliary agents of silicon and zirconium, and carries at least one metal element of VIB family and at least one metal element of VIII family. The assistant silicon and the zirconium are added during gelling of aluminum oxide, so that the silicon and the zirconium are evenly dispersed on the surface of the aluminum oxide, and can give full play to the auxiliary agent. Simultaneously, the catalyst has proper acidic property, so the catalyst shows higher activities of hydrodenitrification and hydrodesulphurization, and has higher activity and stability.

The invention discloses an azaxanthone compound and applications of the azaxanthone compound in organic electroluminescent devices. According to the present invention, the azaxanthone compound uses azaxanthone as the core, the molecules are not easily crystallized and are not easily aggregated, and the azaxanthone compound has good film forming property; and with the application of the azaxanthone compound as the light emitting layer main material of the OLED light emitting device, the current efficiency, the power efficiency and the external quantum efficiency of the device are greatly improved, and the service life of the device can be remarkably improved.

The invention discloses a method for preparing aluminum oxide dry glue powder containing silicon and zirconium. The method comprises the following steps: after an solution containing an aluminum compound and precipitating agent are subjected to gel forming reaction, adding a compound solution containing zirconium into the mixture under the condition of controlling proper pH value and the like, adding a compound containing silicon into the mixture before, after or at the same time of adding the compound containing zirconium, and then washing, filtering and drying the mixture to obtain the dry glue containing the silicon and the zirconium. Through optimizing process and condition of adding the silicon and the zirconium as assistant into the aluminum oxide dry glue, the silicon and the zirconium are evenly dispersed on the surface of aluminum oxide, and can give full play of the assistant.

The invention discloses a water treatment method for adsorbing and removing Tl<+> and / or Cd2<+> by producing nanometer manganese dioxide in situ, relating to a water treatment method of thallium and / or cadmium-containing source water and solving the problems of complex process, high running cost and low removing efficiency of thallium and / or cadmium existing in the conventional water treatment technology specific to thallium and / or cadmium-polluted source water. The method comprises the following steps of: adding permanganate and sodium thiosulfate into Tl<+> and / or Cd2<+>-containing water; stirring to obtain a mixed solution; adding a coagulant; and performing conventional water treatment. Nanometer manganese dioxide which has a large specific surface area and high electronegativity and is easy for precipitation separation is produced in situ by making permanganate react with sodium thiosulfate, so that low-concentration Tl<+> and / or Cd2<+> in water can be removed effectively and specifications in the national Sanitary Standard for Drinking Water are met. The method has the advantages of high removing efficiency, simple process, flexibility and convenience for operation, no change of the original treatment process of a water plant, low running cost and the like, and can be applied to emergency treatment of a water pollution event.

The invention discloses a preparation method of delta-type manganese dioxide and application of delta-type manganese dioxide to removal of trivalent arsenic from water through oxidation, and solves the problems of complex process, high running cost, and low treatment efficiency of trivalent arsenic in the conventional technology for treating water polluted by trivalent arsenic. The delta-type manganese dioxide is prepared from a potassium permanganate solution and a manganese sulfate solution, and water containing trivalent arsenic is subjected to conventional water treatment by using delta-type manganese dioxide. The delta-type manganese dioxide prepared from potassium permanganate and manganese sulfate has a large specific surface area, is high in electronegativity, and is easy to participate and separate; and trivalent arsenic can be effectively oxidized to be removed from water by using delta-type manganese dioxide. The application of delta-type manganese dioxide has the advantages of high oxidization and removal efficiency, simple process, flexibility and convenience in operation and low running cost.

A preparing method of N,S-codoped graphene / MoSe2 / CoFe-LDH aerogel is provided. The method is characterized by including S1) separately preparing a graphene oxide sheet dispersion, a MoSe2 nanosheet dispersion and a layered CoFe-LDH nanosheet dispersion; S2) mixing the graphene oxide sheet dispersion and the MoSe2 nanosheet dispersion, adding a reductant and a crosslinking agent, fully mixing the mixture, reacting the mixture to obtain N,S-codoped graphene / MoSe2 hydrogel, freeze-drying the hydrogel to obtain N,S-codoped graphene / MoSe2 aerogel; and S3) soaking the N,S-codoped graphene / MoSe2 aerogel in the layered CoFe-LDH nanosheet dispersion to obtain N,S-codoped graphene / MoSe2 / CoFe-LDH hydrogel, and freeze-drying the hydrogel to obtain the N,S-codoped graphene / MoSe2 / CoFe-LDH aerogel. The prepared ternary N,S-codoped graphene / MoSe2 / CoFe-LDH aerogel has more excellent hydrogen evolution and oxygen evolution properties under alkaline conditions.

The invention relates to the fields of preparation and application of a modified polyepoxysuccinic acid scale and corrosion inhibitor, and particularly relates to preparation and application methods of a modified polyepoxysuccinic acid scale and corrosion inhibitor which has good biodegradability and water solubility and can be used in water treatment agents. The preparation method comprises the following steps: cyclization reaction and purification of a cyclization product; preparation of a polyepoxysuccinic acid product; and preparation of modified polyepoxysuccinic acid. The modified polyepoxysuccinic acid scale and corrosion inhibitor can be applied under the conditions that temperature is 60-90 DEG C, pH value is 6.0-9.0 and scale inhibition rate is 90-95%. The preparation and application methods have the advantages that: the original complexing capability of polyepoxysuccinic acid is improved, and thus the purpose of improving scale and corrosion inhibition efficiency is finallyachieved; and other process conditions are not changed, and only a low-molecular-weight substance is added in synthesis, thus the purpose of increasing scale and corrosion inhibition performance of polyepoxysuccinic acid is achieved.

The invention discloses a process method for modified collaborative preparation of egg white powder through enzymolysis and phosphorylation. The process method sequentially comprises the steps of egg cleaning, egg white separation, gauze filtration, distilled water dilution, constant temperature enzymolysis, enzyme deactivation treatment, enzymatic hydrolysate centrifugal filtration, phosphorylation, TCA (Trichloroacetic Acid) precipitation and the like. According to the method, the egg white is used as a raw material; the egg white powder which is easy to absorb, has small fishy smell and has good solubility, foaminess and emulsibility is prepared through the combined mode of the enzymolysis and the phosphorylation. The processing characteristic of egg white protein and the utilization rate of the protein are improved.

The invention discloses a preparation method of a nitrogen and phosphorus co-doped carbon-coated graphite anode material, which comprises the following steps of: (1) coating, i.e. weighing graphite and ionic liquid, adding the graphite and the ionic liquid into a high-speed stirrer, carrying out dispersion for 1 to 4h at a rotating speed of 500 to 5,000r / min, and after completing processing, obtaining graphite coated with the phosphorus-containing ionic liquid; and (2) carbonization, i.e. placing the graphite coated with the phosphorus-containing ionic liquid in an atmosphere protection furnace to carry out sintering, heating to a temperature of 400 to 1,000 DEG C at a heating rate of 2 to 25 DEG C per min and carrying out heat preservation for 4 to 18 hours to obtain the nitrogen and phosphorus co-doped carbon-coated graphite anode material. By the structure, the electrical conductivity and the activity of a surface coating layer are greatly strengthened, not only the electronic conductivity of the nitrogen and phosphorus co-doped carbon-coated graphite anode material is effectively improved, but also diffusivity of lithium ions is greatly improved, and the obtained material has excellent rate capability and low-temperature discharge performance.

The invention discloses a two-component water-based hydroxyl acrylic coating composed of a component A and a component B, wherein the weight ratio of the component A to the component B is 1 to (1-3). The component A comprises the raw materials in parts by weight: 40-80 parts of modified hydroxyl acrylic resin, 5-20 parts of water-based hydroxyl fluorosilicone acrylic resin, 5-15 parts of a water-based nano alumina dispersion body, 5-10 parts of a water-based nano silica dispersion body, 2-6 parts of ethylene glycol monoethyl ether acetate, 1-3 parts of a levelling agent BYK306, 0.2-0.8 part of a catalyst dibutyltin dilaurate, and 1-5 parts of xylene. The component B comprises the raw materials in parts by weight: 10-20 parts of a hexamethylene diisocyanate trimer, 1-5 parts of HDI biuret, and 20-30 parts of a diluent. The two-component water-based hydroxyl acrylic coating has good water resistance and excellent corrosion resistance.

The invention discloses a preparation method for anionic dicarboxy cellulose green flocculation material. The method is characterized by comprising the following steps: dissolving cellulose through a sodium hydroxide and urea system, adding an anionic reagent, and generating anionic cellulose; and then preparing the anionic dicarboxy cellulose green flocculation material after two stages of oxidation. The method is simple in operation, the raw materials are easy to obtain, the production cost is low, and the method is easy for popularization and application. According to the material disclosed by the invention, chemically modified cellulose is used as a flocculation material, so that the utilization rate of cellulosic feedstocks is sufficiently improved; no poison or byproduct is generated, so that the flocculation efficiency of the existing flocculation cellulose-based material can be significantly improved, and the environmental pollution is reduced; and meanwhile, raw material dependence of traditional synthetic polymer flocculants on petroleum resources is greatly reduced, and the generated anionic dicarboxy cellulose green flocculation material is completely biodegradable and does not cause secondary pollution. The prepared anionic dicarboxy cellulose green flocculation material is widely applied in the flocculation process of papermaking waste water, dyeing waste water, chemical waste water and municipal sewage, and thus has significant environmental and social benefits.

The invention provides a preparation method of a polycarboxylic acid water reducing agent containing a phosphate group. The preparation method comprises the following steps: firstly, preparing a terminal alkenyl unsaturated phosphonic acid monomer; secondly, mixing acrylic acid, the unsaturated phosphonic acid monomer, a chain transferring agent and de-ionized water to prepare a mixed monomer solution; by taking an alkenyl polyoxyethylene ether macro-monomer solution as a base material, dropwise adding an initiator water solution and the mixed monomer solution respectively under a room-temperature polymerization condition; uniformly stirring, dropwise adding and reacting; and finally neutralizing with a sodium hydroxide solution to obtain the polycarboxylic acid water reducing agent. According to the water reducing agent, the terminal alkenyl unsaturated phosphonic acid monomer is introduced into a structure and primary adsorption is facilitated; the initial dispersity is improved, and hydration and agglomeration of cement are delayed; the slump retaining property is effectively improved and the sensitivity to concrete is reduced; and the stress resistance and adaptability on different aggregate are enhanced.

A proton exchange polymer membrane whose surface is treated by direct fluorination using a fluorine gas, a membrane-electrode assembly, and a fuel cell comprising the same are provided. The proton exchange polymer membrane of the present invention exhibits improved proton conductivity, high dimensional stability, and decreased methanol permeability through introducing hydrophobic fluorine having high electronegativity to the surface of the polymer membrane. Therefore, the proton exchange polymer membrane with excellent electrochemical properties of the present invention can be preferably utilized as polymer electrolyte membrane for fuel cell, generating electric energy from chemical energy of fuels.

The invention discloses a recovery method for waste lithium ion battery anode materials based on a mechano-chemical method, and belongs to the field of waste lithium ion battery recycling. The waste lithium ion battery anode materials are ground into powder, the powder is sufficiently and evenly mixed with an activating agent and an organic reducing agent, the activating agent can generate activefree radicals, a mixture is obtained, the mixture is subjected to ball grinding, the waste lithium ion battery anode materials generate plastic deformation, lattice imperfection is generated in crystal particles, and the crystal particles generate crystal transfer or are not crystallized; and products obtained after ball grinding are added into deionized water, and valuable metal ions are leached.The method does not depend on high-concentration strong acid, strong base, strong oxidization reducing reagents, expensive organic acid and the like, the mechano-chemical reaction in a solid phase isadopted as a reaction body, and efficient leaching of valuable metal lithium, cobalt, nickel, manganese and the like in the waste lithium ion battery anode materials is achieved under the mild leaching environment.

The invention discloses efficient low-foam normal-temperature phosphorous-free oil removing liquid. The oil removing liquid consists of the following components in percentage by weight: 3.0-7.0 wt% of alkylphenol polyoxyethylene ether, 1.0-5.0 wt% of fatty alcohol polyoxyethylene ether, 1.0-5.0 wt% of fatty acid methyl ester polyoxyethylene ether sulfonate, 0.5-4.0 wt% of linear alkylbenzene sulfonate, 10.0-30.0 wt% of carbonate, 4.0-15.0 wt% of sodium metasilicate pentahydrate, 5.0-15.0 wt% of sodium hydroxide, 4.0-12.0 wt% of sodium citrate, 0.5-1.0 wt% of redeposition resisting agent, 2.0-5.0 wt% of complexing agent, 0.1-0.3 wt% of defoaming agent, 1.0-3.0 wt% of corrosion inhibitor, 0.01-0.1 wt% of flocculating settling agent, and the balance of water. The oil removing liquid has the characteristics of cost saving, improvement of oil removing efficiency and economic benefit.

Various embodiments provide shallow trenches and fabrication methods. In an exemplary method, a semiconductor substrate can be provided. A mask layer can be provided on the semiconductor substrate. An etch-cleaning process can be performed. The etch-cleaning process can include etching the semiconductor substrate to form a shallow trench by one or more etching steps using the mask layer as an etch mask. The etch-cleaning process can further include performing a plasma cleaning process after each of the one or more etching steps. The plasma cleaning process can use a plasma that is electronegative.

The invention discloses a temperature-resisting salt-tolerant foam adjusting displacing system prepared from high-salinity formation water. The temperature-resisting salt-tolerant foam adjusting displacing system comprises the following components by weight percent: 0.5%-2% of nano-SiO2, 0.01-2% of THSB, 0.01-0.5% of HPAM, 0.01-0.3% of citrate and the balance of water. The invention discloses a preparation method of the temperature-resisting salt-tolerant foam adjusting displacing system. The preparation method comprises the following steps: firstly adding citrate and nano-SiO2 into water at 25 DEG C; stirring and then ultrasonically treating; adding THSB and stirring; adding partial hydrolysis HPAM and stirring, thereby acquiring the end product. The invention also discloses an oil displacement method adopting the adjusting displacing system. The oil displacement method comprises the following steps: (1) injecting a THSB aqueous solution on a prepositioned pretreated section into stratum; (2) injecting an adjusting displacing system and a pure nitrogen system of a main section into stratum; (3) injecting a nano-SiO2 aqueous solution on a post-positioned protection section into stratum; (4) closing well for 5-10 days, opening the well and recovering production. The compound adjusting displacing system provided by the invention can be applied to high-temperature high-salinity oil deposit and has high ageing stability. Multiple alternate oil displacing sections are arranged, so that the oil displacement effect of the system is extremely promoted.

The invention discloses a pseudo high-concentration ester lithium-sulfur battery electrolyte and a lithium-sulfur battery. The electrolyte contains lithium salt, an ester solvent and a non-solvent solution, the concentration of the lithium salt in the ester solvent is higher than 3.0 mol / L, and the overall concentration of the lithium salt in the pseudo high-concentration electrolyte is not lower than 0.5 mol / L. According to the battery electrode provided by the invention, the problems such as high viscosity and low conductivity of the lithium-sulfur battery electrolyte containing the high-concentration lithium salt can be improved, the electrolyte has incombustibility, and the electrochemical performance and safety of the lithium-sulfur battery can be obviously improved.

An acid resistant composite catalyst comprising dumbbell-shaped composite nanoparticles each comprising a noble metal nanoparticle epitaxially conjugated to a ferrite particle, and / or flower-shaped composite nanoparticles each comprising a noble metal nanoparticle epitaxially conjugated to at least two ferrite particles. The acid resistant composite catalyst is useful to facilitate the reduction of oxygen. The acid resistant composite catalyst can be used in a fuel cell comprising a fuel electrode, an oxygen electrode, and a polymer electrolyte membrane placed between the fuel electrode and the oxygen electrode. The oxygen electrode includes the acid resistant composite catalyst.

Belonging to the technical field of lithium ion batteries, the invention discloses a lithium ion battery composite diaphragm and a preparation method thereof. The composite diaphragm comprises a polyolefin diaphragm and a fluorine-containing macromolecular polymer coating covering at least one surface of the polyolefin diaphragm. Compared with existing polyolefin diaphragms, the composite diaphragm has significantly enhanced thermal stability and safety, and plays a flame retardant role. At the same time, according to the invention, a composite surfactant, a composite silicone defoaming agent, an emulsion suspension stabilizer and a polyether silicone oil leveling agent are added into a polyacrylate cladded fluorine-containing emulsion to perform modification, and the coating performance of the fluorine-containing macromolecular polymer emulsion is improved. The preparation method for the composite diaphragm provided by the invention is simple, and is suitable for large-scale industrial production and application.

The invention discloses a super-long super slow release type polycarboxylic acid slump-retaining agent master batch suitable for projects such as hydraulic tunnels, railway tunnels, metros and underground oil and gas delivery adopting concrete having the capability of retaining slump for 4-6 hours under the conditions of hot weather and long distance. Limited by 40% of the mass percent of mother liquid, the total mass of synthesized raw materials is 1000 parts, the usage amount proportion is that the usage amount of polyether macromonomer accounts for 325-335 parts, the usage amount of unsaturated carboxylic acid micro-monomer accounts for 10.0-18.0 parts, the usage amount of acrylic hydroxyalkanoate accounts for 35.0-45.0 parts, the usage amount of crosslinking monomer accounts for 5.0-10.0 parts, the usage amount of sulfonic acid type chain transfer agent accounts for 2.0-5.0 parts, the usage amount of hydrogen peroxide accounts for 2.0-3.5 parts, the usage amount of vitamin C accounts for 0.60-0.90 part, the usage amount of caustic soda liquid accounts for 7-10 parts, and the balance is water. The polycarboxylic acid slump-retaining agent is moderate in molecular weight, can be independently used or compounded with other polycarboxylic acid water reducing agents for usage, can remarkably improve the indexes such as slump-retaining property, cohesiveness and flowing retention ability of newly mixed concrete in 6 hours.

The invention relates to a preparation method of a supported catalyst for synthesizing chloroaniline through catalytic hydrogenation of chloronitrobenzene and particularly relates to a preparation method of a nitrogen-doped carbon material supported noble metal catalyst applied to the synthesis of chloroaniline through catalytic hydrogenation. The catalyst has the advantages of high catalytic activity, dechloridation inhibition capacity, long service life and the like, and the prepared chloroaniline product is high in purity.

The invention provides a preparation method of an anion-exchange membrane with a univalence and multivalence selective separation function. The preparation method comprises the following steps: (1) preparing a PSS (sodium polystyrene sulfonate) / NaCl mixed solution and an HACC (chitosan quaternary ammonium salt) / NaCl mixed solution; (2) putting an anion-exchange membrane into an electrolytic deposition device; depositing PSS on the surface of the anion-exchange membrane; after immersing with pure water, depositing HACC on the surface of a PSS layer; continuously and alternately depositing to obtain a polyelectrolyte multilayered modified layer on the surface of the anion-exchange membrane; (3) preparing a DAS (4,4'-diazidodistyryl-2,2'-sodium disulfonate) solution; (4) immersing the polyelectrolyte multilayer modified layer into the DAS solution to enable DAS to permeate into a polyelectrolyte multilayer; (5) carrying out ultraviolet irradiation on the modified layer to enable the DAS, the polyelectrolyte multilayer and the surface of the membrane to be subjected to cross linking, so as to form a stable cross-linking modified layer; and (6) immersing the cross-linked membrane into a NaCl solution to remove DAS molecules, so as to obtain the anion-exchange membrane with the univalence and multivalence selective separation function. The anion-exchange membrane prepared by the preparation method has very good univalence selective separation function and stability.

A process for preparing the wheat gluten protein with high emulsifying performance includes such steps as using acid solution to prepare the suspension of wheat gluten protein, heating to 60-90 deg.C, stirring, cooling to 30-55 deg.C, regulating pH value, phosphorylation reaction, regulating pH value, neutralizing by acid, washing, dewatering and drying.

The invention relates to a metal cleaning agent, and discloses a metal cleaning agent added with functional modified graphene and a preparing method of the metal cleaning agent. The metal cleaning agent is composed of 4-15wt% of triethanolamine functional graphene, 13-25wt% of surfactant, 1-2wt% of metal corrosion inhibitor, 0.1-0.8wt% preservative and the balance water. According to the metal cleaning agent, the triethanolamine functional graphene is creatively used to be added into the metal cleaning agent, triethanolamine of the triethanolamine functional graphene and the graphene are bonded as covalent bond, and the surface of the metal cleaning agent contains a large amount of tertiary amine nitrogen and hydroxyl active functional groups; and amino ionic liquid functional graphene achieves graphene modification through the non-covalent interaction between imidazole rings and graphite rings, the graphene has the super large specific surface area, the strong complexing effect is achieved after the grapheme and the triethanolamine are functionalized, so that the strong adsorption capacity is achieved, the hydrophilic and lipophilicity of the triethanolamine are retained, the strong adsorption capacity also can be achieved, and the metal cleaning agent is used without matching of an additional complexing agent.

The invention discloses a composite active medium-green dye. At present, the conventional dyes have poor stability and larger color difference before and after dyeing when being used for pad-dyeing army green, dark green and other sensitive colors. Particularly when a base is added during dyeing process for fixing, because of poor base resistance of the dyes, the dyeing defect is easily caused, thus resulting in low yield of primary dyed products. The composite active medium-green dye is formed by mixing 15-75wt% of active dye A, 10-65wt% of active dye B, 10-60wt% of active dye C and the balance of adjuvant, and has the advantages of high solubility and base resistance, good water washing fastness and compatibility, wide application performance and excellent properties. In the invention, three dyes are combined to improve the application and dyeing performance of the commercial active dye and to increase the water washing fastness, base resistance and compatibility of the dye, thus meeting user needs.