107 results about "Polyethylene polyamine" patented technology

The invention provides a double-component load-bearing adhesive and a preparation method thereof. The adhesive comprises a component A and a component B in a mass ratio of 1: (0.2-0.5), the component A comprises the following raw materials in parts by weight: 50 parts of epoxy resin; 20-40 parts of glass fiber, 20-40 parts of glass fiber, and 20-40 parts of glass fiber, based on 50 parts of epoxy resin; 2-10 parts of aluminum oxide; 10 to 20 parts of aluminum hydroxide; 1-13 parts of a plasticizer; 0.05 to 1 part of a modifier; wherein the epoxy resin comprises bisphenol A type epoxy resin, bisphenol F type epoxy resin and alicyclic epoxy resin; the component B comprises the following raw materials in parts by weight: 100 parts of a curing agent and 0-5 parts of an auxiliary agent based on 100 parts of the curing agent; wherein the curing agent comprises polyethylene polyamine, polyether amine, phenolic aldehyde amine and polyamide. The adhesive has excellent bonding strength, compression strength, toughness and heat resistance, and is suitable for fixing the bearing point of the LNG / LPG storage tank.

The invention discloses a maleamic acid-tragacanth copolymer as well as a preparation method and application thereof, and the maleamic acid-tragacanth copolymer is prepared from the following raw materials in parts by weight: 3-7 parts of maleic anhydride, 90-110 parts of an absolute ethyl alcohol solvent, 10-15 parts of polyethyleneimine, 8-10 parts of polyethylene polyamine and 40-60 parts of an alcohol-water solution, and 15-30 parts by weight of a tragacanth modified derivative. A tragacanth modified derivative is introduced into maleic anhydride amidation in a ring-opening grafting blending manner, so that two adsorption materials have a synergistic effect, the characteristics of biodegradability, a macromolecular porous structure and the like are retained, and a large number of functional groups such as hydroxyl, carboxyl, amido, carbon-carbon double bonds and the like are introduced; toxic substances such as heavy metals, medical intermediates, dyes and pesticides in the wastewater are removed by virtue of comprehensive effects of electrostatic force, hydrogen bonds, Van der Waals force, inclusion and the like.

The invention discloses a star-shaped heavy metal chelating agent taking melamine as a core as well as a preparation method and application of the star-shaped heavy metal chelating agent. The preparation method comprises the following steps: firstly, reacting melamine with formaldehyde under a weakly alkaline condition to generate hexamethylol melamine, and adding polyethylene polyamine before further dehydration polycondensation, so that hydroxymethyl is condensed with amino or imino on the polyethylene polyamine to be connected to the melamine; and reacting with carbon disulfide in the presence of alkali, and grafting-CSS <-> to polyethylene polyamine branched chains to form a structure in which melamine is used as a mother nucleus and six polyethylene polyamine branched chains containing a plurality of-CSS <-> groups are distributed in a star shape. According to the product disclosed by the invention, heavy metal ions are bound on molecules through a chelation effect, and then the heavy metal ions are gathered through a melamine mother nucleus connection effect to form micro-flocs and further grow, so that the chelation binding capability and the flocculation precipitation performance on the heavy metal ions are remarkably improved. The method is simple in process, mild in reaction condition, easy to control operation, environment-friendly in process and easy to realize industrial production.

A method of reducing the emission of NOx, nitrogen oxide and / or nitrogen dioxide, from a diesel engine, comprising dosing a nitrogen containing detergent into diesel fuel. The nitrogen containing dete

The invention discloses a magnetic chitosan / AlOOH / polyethylene polyamine hierarchical porous structure composite material as well as a preparation method and application thereof, and belongs to the technical field of fluorine-containing wastewater treatment. The preparation method comprises the following steps: mixing chitosan, Fe3O4 and aluminum salt, adding epichlorohydrin to carry out cross-linking reaction, enabling AlOOH to grow in situ in an alkaline environment, and enabling chitosan to precipitate, aggregate and separate out to obtain magnetic chitosan / AlOOH; and crosslinking and grafting polyethylene polyamine on the magnetic chitosan / AlOOH by taking glutaraldehyde as a crosslinking agent to obtain the composite material. The preparation method of the composite material comprises the following steps: preparing magnetic chitosan / AlOOH; and preparing the magnetic chitosan / AlOOH / polyethylene polyamine. The composite material has a hierarchical porous structure, macropores larger than 500 nm and a mesoporous structure with the average pore size of 16.2-16.3 nm, the pore volume is 0.009-0.01 cm < 3 > / g, the specific surface area is 3.0-3.1 m < 2 > / g, the saturation magnetization value is 4.3-4.4 emu / g, the structure is stable, the reusability is good, the composite material has excellent adsorption performance on fluorine ions in fluorine-containing wastewater, and the removal rate of the fluorine ions within 4 h reaches 96%.

The invention relates to a branched polymer for selective water control of an oil well and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: firstly, carrying out formylation modification on nano-cellulose by using an oxidizing agent, then carrying out Schiff base reaction on the formylated nano-cellulose and polyethylene polyamine to realize amination modification, and then reducing the nano-cellulose by using a reducing agent to improve the dispersity and reaction activity of the nano-cellulose. On the basis, through an oxidation-reduction reaction between the aminated nanocellulose and Ce < 4 + >, a nonionic water-soluble monomer, an anionic water-soluble monomer, a hydrophobic monomer and the like are used as raw materials, and a polymer with a branched structure is prepared through aqueous solution polymerization. The branched polymer has high molecular rigidity, and the temperature resistance, salt resistance and retention capacity of the branched polymer are remarkably improved. Tests show that the branched polymer still keeps an excellent selective water control effect under long-term scouring of a large amount of liquid.

The invention discloses a waste concrete regenerated micro-powder activating agent and a preparation method and application thereof, and belongs to the technical field of cement-based material admixtures, and the regenerated micro-powder activating agent comprises polyether side chain modified polyethylene polyamine organic activated molecules and nano silicon dioxide. According to the waste concrete regenerated micro-powder activating agent disclosed by the invention, the dissolution-crystallization process of the regenerated micro-powder in a cement-based material system can be effectively improved through the adsorption effect of specific functional groups in the organic activated molecules on the surface of the regenerated micro-powder, and a mineral phase beneficial to a microstructure is formed through induction, so that the utilization efficiency and quality of the regenerated micro-powder are improved. Compared with a single-component organic activated molecule, the organic molecule-nano particle hybrid activating agent has better activating efficiency on the regenerated micro powder, and the performance of the regenerated micro powder mortar / concrete is improved more obviously.

The application discloses a reverse demulsifier composition and relates to the technical field of oil and gas field development. The reverse demulsifier composition comprises 1-4 parts of castor oil and 3-8 parts of cationic polyether in terms of weight parts. The cationic polyether is prepared from a mass ratio of 1:20-80:10-40 of a starter, ethylene oxide and propylene oxide. The starter is prepared by addition reaction of a first monomer and a second monomer. The first monomer is one of polyethylene polyamine or aliphatic diamine. The second monomer is quaternary ammonium salt containing one olefinic bond or epoxy quaternary ammonium salt. The molar ratio of the first monomer to the second monomer is 1:0.2m-0.7m, and m is the number of active hydrogen in the first monomer. The reverse demulsifier composition has good demulsification effect and fast demulsification speed.

The invention belongs to the technical field of diesel additives, and particularly relates to an energy-saving and pollution-reducing composite diesel purification synergist and a preparation method thereof. The energy-saving and pollution-reducing composite diesel cleaning synergist is prepared from the following components in parts by weight: 15 to 20 parts of dialkyl polyene polyamine, 35 to 38 parts of polyether amine, 10 to 15 parts of oil-soluble polyether, 10 to 15 parts of an anti-friction agent, 10 to 15 parts of polyethylene polyamine, 4 to 6 parts of nitromethane, 20 to 25 parts of polyoxymethylene dimethyl ether, 5 to 12 parts of dimethyl carbonate and 12 to 15 parts of solvent oil. The diesel oil purification synergist has the advantages that the diesel oil purification synergist is added into diesel oil, and pollutant emission is reduced, fuel oil consumption is reduced, and the power effect is improved through the technical ways of optimizing the combustion process of a diesel engine, improving the circulation isovolumetric degree and the like.

The invention provides a compound for an oil-based drilling fluid viscosity reducer and the oil-based drilling fluid viscosity reducer. The preparation method of the compound for the oil-based drilling fluid viscosity reducer comprises the following steps: mixing polyethylene polyamine, alcohol amine and humic acid for reaction to obtain a first reaction intermediate; and reacting the first reaction intermediate with a fluorine-containing silane coupling agent to obtain the compound for the oil-based drilling fluid viscosity reducer, wherein the ratio of the amount of substance of the humic acid to the polyethylene polyamine to the alcohol amine to the fluorine-containing silane coupling agent is 1 to (0.5 to 0.75) to (0.01 to 0.5) to (0.5 to 5). The viscosity reducer for the oil-based drilling fluid comprises the compound for the viscosity reducer for the oil-based drilling fluid, a fluorine-containing surfactant and an oil-phase solvent in a mass ratio of 100: (10-50): (20-80). The oil-based drilling fluid viscosity reducer provided by the invention has excellent high temperature resistance.

The invention discloses a reaction device for polyethylene polyamine production, and relates to the technical field of polyethylene polyamine production, the reaction device comprises a rotating shaft, the rotating shaft is fixedly connected with a connecting piece, the rotating shaft is located in a tank body, the rotating shaft penetrates through a fixing piece and extends into a frame body, and the bottom of the rotating shaft is fixedly connected with a fixing ring; a sliding groove is formed in the outer side of the fixing ring, an L-shaped plate is slidably connected into the sliding groove, a fixing base is fixedly connected to the outer side of the rotating shaft, an inclined plate is fixedly connected to the side, close to the fixing base, of the L-shaped plate, and a rotating plate is fixedly connected to the outer side of the fixing base. According to the reaction device for polyethylene polyamine production, the rotating plate and the L-shaped plate work together to stir and mix raw materials in the tank body, so that different reactants in the raw materials can be in full contact and are uniformly distributed, the situation that the local concentration is too high or too low is avoided, the reaction can be uniformly carried out at each part, and the reaction efficiency is improved. Therefore, the quality and the stability of products are improved.

The preparation method comprises the following steps that under the condition of antioxidant protection, polyenoic acid containing at least one allyl hydrogen and maleic anhydride are mixed and subjected to an Alder-Ene reaction for 5-12 h at the temperature of 160-240 DEG C, modified polyenoic acid is prepared, and the molar ratio of olefin functional groups in the polyenoic acid to maleic anhydride is 1.5: 1.0-2.0: 1.0; the modified polybasic carboxylic acid and polyethylene polyamine are subjected to a dehydration polycondensation reaction at the temperature of 160-190 DEG C, the molar ratio of terminal amino of the polyethylene polyamine to carboxyl of the modified polybasic carboxylic acid is 1.05: 1.0-1.40: 1.0, and modified polyamide is prepared; the modified polyamide is dissolved in water at the temperature of 50-100 DEG C to be diluted, the PH value is adjusted to be 5.0-9.0, and the halogen-free polyamide polyamine papermaking cylinder adhesive is prepared. Epoxy chloropropane is not used, the poison problem of chloropropanol and organic halogen is avoided, modified polycarboxylic acid serves as a cross-linking agent, and the adhesive has good binding power and has flexibility and film forming water resistance.

The invention belongs to the technical field of drilling fluid chemistry in the petroleum industry, and particularly relates to a high-temperature-resistant viscosity reducer as well as a preparation method and application thereof. The preparation method of the high-temperature-resistant viscosity reducer provided by the invention comprises the following steps: (1) adding vegetable oleic acid and polyethylene polyamine into a reactor, and reacting at a first temperature under the protection of inert gas to obtain a first intermediate; (2) reducing the temperature of the first intermediate to a second temperature, slowly adding anhydride, then heating to a third temperature, and continuously reacting to obtain a second intermediate; and (3) reducing the temperature of the second intermediate to room temperature, adding trimethylchlorosilane, reacting at a fourth temperature, and adding white oil for dilution after the reaction is finished, thereby obtaining the high-temperature-resistant viscosity reducer. The high-temperature-resistant viscosity reducer disclosed by the invention has an excellent temperature-resistant effect, and the viscosity reduction effect of the high-temperature-resistant viscosity reducer on an oil-based drilling fluid can still reach 20% or above after the high-temperature-resistant viscosity reducer is aged at 180 DEG C for 16 hours.

The invention relates to a chemical absorption liquid for removing methyl iodide and a preparation method thereof, and belongs to the technical field of underwriting. The chemical absorption liquid comprises the following raw materials in percentage by mass: 0.2-5% of sodium thiosulfate, 1-10% of long-chain alkyl trimethyl ammonium halide, 0-1% of sodium hydroxide, 0-10% of polyethylene polyamine and the balance of water. The number of long-chain carbon atoms in the long-chain alkyl trimethyl ammonium halide is greater than 8; the chemical absorption liquid is prepared by completely dissolving and uniformly mixing the components. According to the chemical absorption liquid, the long-chain alkyl trimethyl ammonium halide salt is introduced as a surfactant for the first time, has a solubilizing effect, and can greatly reduce the gas-liquid mass transfer resistance of methyl iodide, so that efficient absorption of radioactive and non-radioactive methyl iodide is realized; the chemical absorption liquid is not only suitable for normal temperature, but also suitable for high-temperature and high-humidity environments, and harmful gas can be purified in a solution washing or solution spraying mode.

The invention relates to the technical field of solid propellants, and particularly discloses a polycyanide polyhydroxyl bonding agent, a preparation method and application of the polycyanide polyhydroxyl bonding agent in a hydroxyl-terminated polybutadiene propellant.The preparation method of the bonding agent comprises the steps that acrylonitrile is dropwise added into polyethylene polyamine, and a temperature rise reaction is conducted to prepare an intermediate; and adding glyceric acid into the intermediate, heating to carry out amidation reaction, and distilling until no liquid is distilled off to obtain the target bonding agent. The bonding agent is of a polycyanide polyhydroxyl molecular structure, hydroxyl in the bonding agent and toluene diisocynate can enter a cross-linked network through chemical bonding, cyano can generate a very strong physical adsorption effect with the surfaces of nitramine oxidizing agent particles, and the bonding agent is used as a nitramine or nitramine modified hydroxyl-terminated polybutadiene solid propellant system. After the bonding agent provided by the invention is added into a solid propellant system, the normal-temperature, high-temperature and low-temperature mechanical properties of the solid propellant are obviously improved.

The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.

The present invention belongs to the technical field of oil and gas drilling, and specifically relates to an emulsifier for oil-based drilling fluid and a preparation method thereof. The preparation method of an emulsifier for oil-based drilling fluid of the present invention comprises the following steps: S1, subjecting waste oil regenerated fatty acid to amidation reaction with polyethylene polyamine; S2, subjecting the product of the amidation reaction in step S1 to amidation reaction with compound A; the compound A is selected from one or any combination of dicarboxylic acid compounds, polycarboxylic acid compounds, and acid anhydride compounds. The preparation method of the emulsifier for oil-based drilling fluid of the present invention uses waste oil regenerated fatty acid as a basic raw material, has more superior environmental protection and economy, and the prepared emulsifier can improve the rheology of high-density oil-based drilling fluid when used in oil-based drilling fluid, reduce the viscosity and shear force of high-density oil-based drilling fluid, speed up drilling speed, and prevent the occurrence of complicated underground situations such as leakage.

This invention relates to the field of nanofiltration membrane technology, and discloses a method for preparing a polysulfonamide and an acid-resistant composite nanofiltration membrane, as well as its application. The method for preparing the polysulfonamide includes reacting polyethylene polyamine, polyethyleneimine, and polysulfonyl chloride in contact. The composite nanofiltration membrane includes a bottom layer, an intermediate support layer, and a separation layer, wherein the separation layer is separation layer A or separation layer B; separation layer A is made of polysulfonamide with metal ions chelated on its surface; separation layer B is obtained by reacting polyethylene polyamine, polyethyleneimine, and polysulfonyl chloride in contact. The composite nanofiltration membrane of this invention can improve the desalination rate and acid resistance of nanofiltration membranes when used in water treatment.

The application discloses a hydrophilic polytetrafluoroethylene membrane and a preparation method thereof. The hydrophilic polytetrafluoroethylene membrane comprises a PTFE base film and a hydrophilic layer attached to the PTFE base film; raw materials of the PTFE base film comprise polytetrafluoroethylene dispersion resin, maleic anhydride copolymer and extrusion aid in a mass percentage ratio of 1:0.05-0.2:0.2-0.4, the maleic anhydride copolymer is a copolymer of olefin or aromatic hydrocarbon and maleic anhydride; raw materials of the hydrophilic layer comprise polyethylene polyamine solution and polyethylene imine solution, and a water wetting angle of the hydrophilic polytetrafluoroethylene membrane is less than 50 degrees. In the filtration process of etching waste liquid and stripping liquid, the hydrophilic polytetrafluoroethylene membrane disclosed by the application is not prone to accumulate dirt, can maintain relatively stable transmembrane pressure and keep stable filtration effect.

The invention discloses a polyethylene polyamine derivative synthesis reactor, relates to the technical field of reactors, and aims to solve the problem that heavy solid materials are accumulated at the bottom of the periphery and are heated unevenly under the action of stirring centrifugal force when the materials are stirred through stirring blades and are solid-liquid mixtures in the material reaction process. According to the polyethylene polyamine derivative synthesis reactor, the separation barrel is matched with the auger plate, so that materials on the inner side and the outer side of the separation barrel circularly flow in the rotating process, and the materials with moderate solid and liquid can drive the solid materials to flow along with the materials in the circular flowing process of the liquid, so that the solid materials are uniformly contacted with heat transferred by the heat conduction mechanism; and the situation that the materials are directly driven to rotate for stirring and mixing, so that the solid materials with increased mass are accumulated at the bottoms of the peripheries of the materials under the action of centrifugal force, and the materials are heated unevenly is avoided.

To provide an N-alkylated polyethylene amine mixture usable as an aqueous solution for carbon dioxide separation, which prevents the formation of N-alkylated polyethylene amine hydrates that cause solidification of the aqueous solution.SOLUTION: An N-alkylated polyethylene polyamine mixture contains both linear N-alkylated polyethylene polyamines and branched N-alkylated polyethylene polyamines. The number of nitrogen atoms contained in each of the linear and branched N-alkylated polyethylene polyamines is four or more. The content ratio of the linear N-alkylated polyethylene polyamines is 35 mass% or less relative to the total 100 mass% of the mixture.SELECTED DRAWING: None

This invention relates to the field of polymer materials technology, specifically to a permanent antistatic ABS composite material based on polyethylene polyamine-aminated carbon nanotubes, its preparation method, and its application. The method includes: Step 1, basicizing carbon nanotubes; Step 2, mixing carboxylated carbon nanotubes, N,N'-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine, adding N,N-dimethylformamide solvent, and then adding polyethylene polyamine to obtain polyethylene polyamine-aminated carbon nanotubes; Step 3, grafting the polyethylene polyamine-aminated carbon nanotubes with a styrene-maleic anhydride copolymer to obtain styrene-maleic anhydride-grafted polyethylene polyamine-aminated carbon nanotubes; Step 4, melting the styrene-maleic anhydride-grafted polyethylene polyamine-aminated carbon nanotubes with ABS to obtain a permanently antistatic ABS composite material. This preparation method uses polyethylene polyamine to aminate carbon nanotubes, improving the antistatic effect and mechanical properties of the ABS composite material.

The invention relates to the technical field of metal working fluids, in particular to a magnesium alloy cutting fluid and a preparation method thereof. The magnesium alloy cutting fluid is prepared from the following components in parts by mass: 6 to 10 parts of alcohol amine, 3 to 6 parts of organic phosphonic acid, 2 to 4 parts of ether carboxylic acid, 1 to 3 parts of waterborne polyether, 2 to 4 parts of phosphate, 1 to 3 parts of special amine, 0.5 to 2 parts of siloxane ketone, 0.5 to 2 parts of waterborne silicone oil, 0.5 to 2 parts of chelating agent, 1 to 3 parts of polyethylene polyamine, 0.1 to 0.5 part of waterborne graphene extreme pressure agent, 0 to 1.2 parts of auxiliary agent and 65 to 85 parts of water. By compounding various lubricants and extreme pressure agents such as alcohol amine, ether carboxylic acid, water-based polyether, phosphate, siloxane ketone, water-based silicone oil and a water-based graphene extreme pressure agent, an effective lubricating film is formed in the cutting process, friction is reduced, cutting force is reduced, formation of built-up edges is inhibited, and the service life of a cutter is prolonged.

The present invention provides an oil-based drilling fluid shearing agent, a preparation method thereof and a high-density oil-based drilling fluid, wherein the oil-based drilling fluid shearing agent has a long-chain lipophilic group and multiple hydrophilic groups in the molecule; the oil-based drilling fluid shearing agent is prepared by esterification reaction of fatty acid and oligoamide substances; the fatty acid is selected from one or more of oleic acid, rosin acid, stearic acid, dodecylbenzenesulfonic acid and lauric acid; the oligoamide substances are obtained by reaction of oligomeric acid and organic amine, the oligomeric acid is selected from one or two of dimer acid and trimer acid, and the organic amine is selected from one or more of diethanolamine and polyethylene polyamine. The treating agent has an amphiphilic structure, has multiple hydrophilic groups and long-chain lipophilic groups in the molecule, has high temperature resistance, is helpful to improve or maintain the adhesion and shear of ultra-high density oil-based drilling fluid after high-temperature aging, thereby being beneficial to improving its high-temperature sedimentation stability, and the temperature resistance reaches 200°C.

The invention discloses a filter element for deep dehydration and deacidification of natural gas and a preparation method of the filter element, and belongs to the technical field of natural gas filtration treatment.The filter element is characterized in that inert gas containing corrosive gas is introduced into a porous filter element through a gas phase corrosion method, so that the porosity of the porous filter element is increased, the adsorption capacity of the porous filter element is improved, and the adsorption capacity of the porous filter element is improved; the loading capacity on polyethylene polyamine is improved; the porous filter element is soaked in the organic solvent containing the polyethylene polyamine activating agent, so that the polyethylene polyamine activating agent is attached into the porous filter element, and the adsorption rate of polyethylene polyamine is increased; meanwhile, polyethylene polyamine is slowly deposited into the porous filter element through a gas phase corrosion method, so that molecules are more easily diffused into pores, the load is more uniform, and the load depth is deeper. According to the filter element disclosed by the invention, deep adsorption of moisture and acid gas in natural gas is realized through cooperation of physical adsorption and chemical adsorption, and the filter element can be recycled, so that the production cost is effectively reduced.

The invention relates to the field of lubricating oil, in particular to a phenolic ester antioxidant, a lubricating oil composition and preparation and application of the phenolic ester antioxidant and the lubricating oil composition. The preparation method of the phenolic ester antioxidant comprises the following steps: mixing alkylphenol and formaldehyde at 50-55 DEG C under the protection of nitrogen to synthesize a first intermediate; mixing the first intermediate and polyethylene polyamine at 50-55 DEG C under the protection of nitrogen to synthesize a second intermediate; mixing alkylphenol and triethyl phosphite, and synthesizing a third intermediate by taking anhydrous potassium carbonate as a catalyst; and mixing the second intermediate and the third intermediate, and synthesizing the phenolic ester antioxidant by taking anhydrous potassium carbonate as a catalyst. The phenolic ester antioxidant provided by the invention has excellent oxidation resistance and detergency and dispersibility, and can reduce the paint film formation tendency when the lubricating oil is used.

The invention relates to a phenolic resin polyethylene polyamine demulsifier as well as a preparation method and application thereof, and belongs to the technical field of oil and gas exploitation. The demulsifying agent comprises a modified four-block phenolic resin demulsifying agent and a seven-block polyether phosphate demulsifying agent, the modified four-block phenolic resin demulsifying agent can quickly achieve a demulsifying effect on shale oil, and the seven-block polyether phosphate demulsifying agent is long in demulsifying time and sufficient in later strength. The modified tetrablock phenolic resin demulsifier and the heptablock polyether phosphate demulsifier are compounded, so that the demulsification effect can be effectively improved, and the demulsification time can be effectively prolonged. For shale oil, the demulsifying and dehydrating agent can play a good demulsifying and dehydrating role, and the water content in the dehydrated oil is less than 3.0%.

The present invention relates to a demulsifier composition for complex heavy oil produced fluid and a preparation method thereof. A demulsifier composition for complex heavy oil produced fluid is composed of the following components, calculated by mass percentage: 5% to 10% of a cage-type capture agent, 30% to 40% of a demulsifier, 10% to 15% of a cationic surfactant, 5% to 15% of a small molecule auxiliary agent, and the balance is water. A preparation method for a demulsifier composition for complex heavy oil produced fluid comprises the following steps: (1) preparing a cage-type capture agent; (2) respectively weighing a formulated amount of a cage-type capture agent, a demulsifier, a cationic surfactant, a small molecule auxiliary agent and water into a reaction container, mixing and uniformly stirring, and then heating and stirring to obtain a demulsifier composition for complex heavy oil produced fluid. The present invention has the following beneficial effects: 1. It can reduce the viscosity of the oil phase, making the interfacial film easier to break; 2. Finally, the polyethylene polyamine-based demulsifier is adsorbed on the interfacial film, completely destroying the interfacial film.

The application belongs to the technical field of catalyst carrier preparation, and particularly relates to a modified catalyst carrier material and a preparation method thereof. The preparation process comprises the following steps: (1) preparing an aluminum salt mixed solution containing hydroxypropyl-beta-cyclodextrin; (2) preparing a partial aluminate mixed solution containing a polyethylene polyamine small molecule compound; (3) adding the partial aluminate mixed solution into the aluminum salt mixed solution to obtain a precursor; and (4) obtaining the modified catalyst carrier material after reaction, post-treatment and calcination. A certain amount of polyethylene polyamine small molecule compound is added as a template assistant in the hydroxypropyl-beta-cyclodextrin template system. The unique properties of the hydroxypropyl-beta-cyclodextrin and the polyethylene polyamine small molecule compound are utilized to guide the aluminum salt and the partial aluminate to form a precursor with a porous channel structure, and finally an alumina carrier with a high specific surface area and a large pore size is obtained through calcination.

The invention relates to the field of epoxy resin, and discloses a flame-retardant curing agent, a flame-retardant epoxy resin composition, a flame-retardant epoxy resin material and a preparation method thereof, and the flame-retardant curing agent contains a reaction product of alicyclic amine, polyethylene polyamine, tertiary amine and phosphate. The flame-retardant epoxy resin composition contains flame-retardant epoxy resin and a flame-retardant curing agent, and the flame-retardant epoxy resin contains a reaction product of bisphenol epoxy resin, novolac epoxy resin, a polyfunctional epoxy diluent and a flame retardant. According to the flame-retardant epoxy resin material, the specific flame-retardant epoxy resin and the flame-retardant curing agent are selected, so that the flame-retardant epoxy resin material has the advantages of being short in curing forming time and excellent in flame-retardant effect, curing forming of the flame-retardant epoxy resin material within 5 min can be achieved, and the flame-retardant grade of the flame-retardant epoxy resin material with the thickness of 0.9-1.5 mm passes the UL94V0 grade.