395 results about "Diethylenetriamine" patented technology

The invention belongs to the technical field of thin film capacitors, and particularly relates to a chemical grafting modified polypropylene capacitor film material and a preparation method and application thereof. According to the preparation method of the chemical grafting modified polypropylene capacitor film material, provided by the invention, diethylenetriamine ethyl acrylate with a plurality of specific groups such as amino groups and carboxyl groups and unsaturated double bonds is synthesized through esterification reaction, and the diethylenetriamine ethyl acrylate is introduced into a polypropylene material through chemical grafting to obtain chemical grafting modified polypropylene; the prepared polypropylene capacitor film material has the excellent properties of good compatibility, difficulty in film breakage, capability of adsorbing and removing residual moisture, difficulty in oxidation corrosion, excellent breakdown resistance and the like, and the preparation method is a preparation method of the high-performance polypropylene capacitor film material; therefore, the technical problem that a polypropylene capacitor film material prepared in the prior art is low in performance is solved.

The invention belongs to the field of catalyst preparation and compound synthesis, and particularly relates to a composite metal catalyst, a preparation method and application of the composite metal catalyst in co-production of diethylenetriamine and piperazine. The composite metal catalyst consists of three parts, namely a main active component, an auxiliary active component and a carrier, the main active component is at least any one of Ni and Cu, the auxiliary active component is at least any one of Mg, Cr, Mn, Co, Sr, La and Ba, and the carrier is Al2O3. The invention also provides a method for co-production of piperazine from diethylenetriamine by using the composite metal catalyst. By adopting the method disclosed by the invention, the coproduction of the piperazine with high added value in the continuous synthesis process of the diethylenetriamine can be realized.

The invention discloses an efficient wet desulfurization synergist and a preparation method thereof, and relates to the technical field of flue gas desulfurization. The efficient wet desulphurization synergist comprises the following raw materials in parts by weight: 10-20 parts of sodium formate, 5-10 parts of citric acid, 20-30 parts of binary acid, 5-6 parts of a surfactant, 15-20 parts of magnesium salt, 12-18 parts of sodium salt and 2-5 parts of a pH buffer agent. The preparation method comprises the following steps: reacting cyanuric chloride with lauryl amine to generate a monosubstituted compound; then reacting with L-asparaginic acid to generate a disubstituted compound; reacting with diethylenetriamine to generate a bis-triazine ring compound; and finally, reacting with sodium 2-chloroethanesulfonate to generate the surfactant. The high-efficiency wet desulphurization synergist prepared by the invention has a desulphurization effect.

The invention relates to an antistatic film and a preparation method thereof, and belongs to the technical field of polymer film materials. The antistatic film is prepared from the following components in parts by weight: 100 parts of PP resin, 5 to 8 parts of hydrogenated petroleum resin, 4.5 to 5.5 parts of conductive filler, 1.2 to 1.6 parts of antistatic additive, 0.1 to 0.12 part of antioxidant, 0.08 to 0.1 part of light stabilizer and 2.5 to 3 parts of lubricant, the preparation method comprises the following steps: carrying out amine ester exchange on methyl acrylate and diethylenetriamine under the catalysis of sodium hydride to prepare a double-bond-terminated amide compound, namely an amidated matrix, carrying out addition on mercaptopropyltrimethoxysilane and the amidated matrix under the initiation of ultraviolet radiation, and introducing a methoxysilane structure to the end part of the amidated matrix for modification, so as to obtain the antistatic additive. Finally, bromopropane and residual amido of the silanization intermediate are subjected to quaternization treatment, and the antistatic auxiliary is obtained. The film material is endowed with good antistatic performance and packaging performance through the interaction of the antistatic auxiliaries.

The present invention provides a polyester heat-shrinkable film containing recycled materials and a preparation method thereof, belonging to the technical field of polymer synthetic films. The raw materials of the polyester heat-shrinkable film include recycled PET polyester particles, PET polyester chips, and a modified masterbatch; the modified masterbatch is prepared from polyethylene terephthalate-1,4-cyclohexanedimethanol ester, triphenyl phosphite, polyethylene glycol block copolymer, nano-silica, and hyperbranched polyester amine; the polyethylene glycol block copolymer is prepared from polyethylene glycol and γ-valerolactone under the action of a catalyst; the hyperbranched polyester amine is prepared from trimethylolpropane, methyl crotonate, and diethylenetriamine. The product of the present invention has excellent properties such as excellent unidirectional anti-shrinkage performance and low haze.

The invention relates to the technical field of chemical preparations, in particular to a sodium hypochlorite stabilizer, a preparation method and a use method thereof and a stable sodium hypochlorite solution. The sodium hypochlorite stabilizer is prepared from the following components in percentage by mass: 2.5 to 3.5 percent of sodium diethylenetriamine pentaacetate, 2.5 to 3.5 percent of disodium ethylene diamine tetraacetate, 1.0 to 1.25 percent of sodium silicate, 3.5 to 5.0 percent of sodium bicarbonate, 2.5 to 3.0 percent of sodium chloride and the balance of water. The stable sodium hypochlorite solution prepared by adopting the sodium hypochlorite stabilizer disclosed by the invention is higher in stability and longer in validity period.

The preparation method comprises the following steps: weighing oleic acid and a catalyst, adding the weighed oleic acid and catalyst into a reaction container, heating by stages by adopting a programmable electric heating jacket, respectively dropwise adding a water carrying agent at 80-100 DEG C, dropwise adding diethylenetriamine or triethylene tetramine at 110-130 DEG C, controlling the reaction temperature and time, and reacting for 2-4 hours to obtain the compound corrosion inhibitor for the CO2 oil displacement produced liquid. After water is separated out, further reaction is carried out at 200-230 DEG C, then the system is cooled to 60-70 DEG C, a quaternization reagent is added for reaction, and a corrosion inhibitor E and a corrosion inhibitor S are prepared respectively; finally, the corrosion inhibitor E and the corrosion inhibitor S are compounded according to a certain proportion, and the compound corrosion inhibitor for the CO2 oil displacement produced liquid is obtained. The preparation method is simple and easy to implement, and the cost can be reduced; when the prepared corrosion inhibitor is applied to CO2 oil displacement produced liquid corrosion inhibition, an excellent corrosion inhibition effect can be shown, and corrosion hazards in CO2 oil displacement application are greatly reduced.

The application discloses a self-repairing crystal anti-permeation high-durability cement-based material, a cement-based surface structure and a paving method thereof. The self-repairing crystal anti-permeation high-durability cement-based material comprises the following components in parts by weight: Portland cement 40-60 parts, wear-resistant aggregate 35-50 parts, water reducing agent 0.02-0.05 parts, retarder 0.2-0.5 parts, redispersible emulsion powder 1-2 parts, silica fume 1-2 parts, expanding agent 1-3 parts, chelating agent 1-6 parts and crystallization precipitant 1-6 parts; the total amount of the above components is 100 parts; the chelating agent is diethylenetriamine pentaacetic acid, and the weight ratio of the chelating agent to the crystallization precipitant is (0.5-2):1. The cement-based material has excellent self-repairing property, so that the strength, durability and anti-permeation property of the cement-based material are significantly improved.

The invention relates to the technical field of carbon dioxide capture, and discloses a carbon dioxide absorbent and a preparation method thereof, and the carbon dioxide absorbent comprises the following components by weight: 10-15 parts of diethylenetriamine and 2-3 parts of modified mesoporous silica. According to the invention, through a synergistic adsorption mechanism of diethylenetriamine and modified mesoporous silica, a relatively good CO2 capture capability is realized; the cage-shaped structure of the modified mesoporous silica has a high specific surface area and ordered pore channels, and provides sufficient loading sites and diffusion channels for diethylenetriamine; meanwhile, an amino auxiliary (containing a plurality of primary amine and secondary amine groups) introduced in the modification process and a polyamine structure of diethylenetriamine form an amino cluster, and a better adsorption effect is achieved.

The invention provides alcohol amine liquid, a device and a method for decarburization of high-dust gas, and belongs to the technical field of low-carbon metallurgical decarburization in the metallurgical industry. Wherein the alcohol amine liquid comprises alcohol amine, an activating agent, a flocculating agent, a defoaming agent and water; the alcohol amine is selected from one or more of primary alcohol amine, secondary alcohol amine, tertiary alcohol amine or sterically hindered alcohol amine; the activating agent is selected from one or more of piperazine, diethanol amine, diethylenetriamine and diisopropanolamine; the flocculating agent is an inorganic flocculating agent, an organic flocculating agent or a composite flocculating agent composed of the inorganic flocculating agent and the organic flocculating agent; the defoaming agent is a composite defoaming agent consisting of one or more of a non-silicon type, an organic silicon type, a polyether type and a polyether modified organic silicon type. According to the developed alcohol amine liquid, the high-dust gas is carried into the alcohol amine liquid, dust is removed, and the influence of the dust on bubbles is eliminated, so that decarburization treatment on the high-dust gas by using an alcohol amine decarburization method is realized.

The invention discloses a mixed organic amine absorbent as well as a preparation method and application thereof. The absorbent consists of a main absorbent, an absorption enhancer, a regulator and a solvent, the mass ratio of the main absorbent to the absorption enhancer to the conditioning agent is (0.5-5.0): (0.2-4.0): 1.0; the total mass concentration of the main absorbent, the absorption enhancer and the conditioning agent is 30-50 wt%; the main absorbent is diethylenetriamine, the absorption enhancer is N-methyldiethanolamine, the conditioning agent is 2-amino-2-methyl-1-propanol, and the solvent is water. According to the invention, by compounding and regulating the proportion of the organic amines, the synergistic effect of different types of organic amines is fully exerted, so that the mixed organic amine absorbent has high cycle capacity, low regeneration energy consumption, low absorbent loss, good dynamic performance and other good carbon dioxide capture performance.

The invention provides a perfluoroethanone microcapsule and a preparation method thereof, and belongs to the technical field of fire extinguishing materials, the perfluoroethanone microcapsule comprises a core and a shell layer; the core comprises perfluorohexanone and fumed silica; the shell layer comprises isophorone diisocyanate, diethylenetriamine and a chlorine-containing monomer, and the isophorone diisocyanate, the diethylenetriamine and the chlorine-containing monomer are subjected to an interfacial polymerization reaction to form a polyurea-polyurethane hybrid network; the mass ratio of the shell to the core of the microcapsule is 1: (5-20); the anhydrous microcapsule core is constructed through an oil-in-oil type anhydrous interfacial polymerization system, so that the hydrolysis side reaction is fundamentally avoided, the microcapsule has higher stable encapsulation efficiency, and the reliability and long-term effectiveness of the product in the storage and use processes are ensured.

The invention discloses a cationic self-assembly high-temperature-resistant clay stabilizer and a preparation method thereof.The preparation method sequentially comprises the following steps that firstly, N-methylbenzylamine, diethylenetriamine and epichlorohydrin are subjected to a substitution reaction, and polyquaternary ammonium containing quaternary ammonium ions and benzyl is prepared; then carrying out a reaction on the mono6-amino-beta-cyclodextrin and epoxy chloropropane, so as to prepare a beta-cyclodextrin-epoxy chloropropane condensation compound; and finally, blending and assembling the two substances to generate the cation assembled compound with relatively high cation degree and high temperature resistance. Polyquaternary ammonium containing quaternary ammonium ions and benzyl in the cation assembly compound provides quaternary ammonium cations combined with anionic charges on the surface of stratum clay minerals on one hand, and provides benzene rings combined with beta-CD holes of the beta-cyclodextrin-epichlorohydrin condensation compound on the other hand. The prepared clay stabilizer has good high temperature resistance, has a good clay anti-swelling effect under a strong alkaline condition, and can improve the crude oil recovery rate.

The invention discloses an amorphous PtNi self-supporting catalytic electrode, a preparation method thereof and a direct ammonia fuel cell, and belongs to the technical field of electrode materials. According to the technical scheme, the catalytic electrode adopts foamed nickel as a conductive framework substrate, and an amorphous PtNi alloy wall-shaped array structure grows on the foamed nickel in situ; the preparation method of the catalytic electrode comprises the following steps: pretreating the foamed nickel substrate; the preparation method comprises the following steps: adding platinum diacetylacetonate, potassium hydroxide, N, N-dimethylformamide and diethylenetriamine into ethylene glycol to prepare a precursor solution; and immersing foamed nickel into the precursor solution, and carrying out in-situ growth reaction under high-temperature and high-pressure conditions to obtain the amorphous PtNi self-supporting catalytic electrode. The catalytic electrode has the beneficial effects that the catalytic electrode shows high specific activity and extremely low apparent activation energy in ammoxidation reaction, still keeps 90% of current density after continuously working for 1000 hours, and shows excellent long-term stability and durability.

The invention discloses a preparation method and application of a metal sulfide adsorbent for adsorbing iodine and methyl iodide. The preparation method comprises the following steps: uniformly mixing an antimony source, a sulfur source, a deep eutectic solvent, polyamine and water to obtain a mixed solution; and transferring the mixed solution into a high-pressure reaction kettle, sealing, carrying out hydrothermal reaction at 110-220 DEG C for 2-9 days, cooling to room temperature to separate out crystals, and filtering, washing and drying to obtain the metal sulfide adsorbent. The invention also discloses application of the metal sulfide adsorbent in adsorption of iodine and methyl iodide. The metal sulfide adsorbent disclosed by the invention has a good adsorption effect on iodine and methyl iodide, and compared with an ethylenediamine-oriented metal sulfide adsorbent, the diethylenetriamine-oriented metal sulfide adsorbent has higher adsorption capacity on iodine and methyl iodide.

The invention discloses a preserving fluid for stably preserving sample DNA at normal temperature and a preparation method thereof, and belongs to the technical field of biological sample preservation. The preserving fluid comprises a lysis system, a nucleic acid protection system and a buffering and stabilizing system, the cracking system comprises a composite surfactant and an enzymolysis auxiliary agent; the composite surface active agent is prepared from polyether polyol fatty acid ester and cocamidopropyl hydroxy sulfobetaine; the enzymolysis auxiliary agent comprises lysozyme Lyso-V and protease K; the nucleic acid protection system comprises a nitrogen heterocyclic polyamine-carboxylic acid derivative and dextran sulfate; the nitrogen heterocyclic polyamine-carboxylic acid derivative comprises 1, 4, 7, 10-tetraazacyclododecane-N, N ', N' ', N ''tetraacetic acid, 1, 4, 7-triazacyclononane-N, N', N''-triacetic acid, disodium ethylene diamine tetraacetate-nitrogen heterocyclic derivative, and diethylenetriamine pentaacetic acid-piperazine derivative, and the nitrogen heterocyclic polyamine-carboxylic acid derivative comprises 1, 4, 7, 10-tetraazacyclododecane-N, N ', N '', N'' tetraacetic acid, 1, 4, 7-triazacyclononane-N, N', N ''-triacetic acid. The buffering and stabilizing system comprises an amphoteric buffering agent and a polymer stabilizer; the amphoteric buffering agent comprises 2-(N-morpholino) ethanesulfonic acid and N-tri (hydroxymethyl) methylglycine.

The invention belongs to the technical field of CT imaging, and relates to a bismuth-based imaging contrast agent and a preparation method thereof. The bismuth-based imaging contrast agent is formed by chelating diethylenetriamine pentaacetic acid (DTPA) modified by sulfamic acid with bismuth ions and then connecting an antibody to the surface. The preparation method comprises the following steps: carrying out first reaction on DTPA and sulfamic acid in the presence of an activating agent to obtain sulfamic acid modified DTPA; carrying out a second reaction with an inorganic bismuth salt in a second solvent, then adjusting the pH value to be neutral, and drying to obtain aminosulfonic acid modified DTPA chelated bismuth ions; and carrying out third reaction on the DTPA chelated bismuth ions modified by sulfamic acid and an antibody, and drying to obtain the product. The CT imaging contrast agent has excellent CT imaging capability, high safety and tumor cell killing capability.

The invention provides three-vinylon rib and microcapsule self-repairing concrete and a preparation method thereof, and belongs to the technical field of building materials. Basalt fibers and polyvinyl alcohol fibers are blended, and obtained blended fibers are subjected to determinant three-dimensional weaving to prepare three-dimensional composite fibers; and soaking the three-dimensional composite fiber in epoxy resin, coating a mixture of diethylenetriamine and ethylenediamine, drying and curing to obtain the three-vinylon rib. And coating the epoxy resin with polyphenylene sulfide to prepare the microcapsule. And then mixing the three-vinylon rib and the microcapsule with concrete slurry to prepare the three-vinylon rib and microcapsule self-repairing concrete. The compressive strength and breaking strength of the three-vinylon rib and microcapsule self-repairing concrete obtained by adopting the method are remarkably improved, and meanwhile, the three-vinylon rib and microcapsule self-repairing concrete also has excellent self-repairing capability.

The invention relates to the technical field of chemical engineering, and discloses a hydrogen peroxide stabilizer and a preparation method thereof.The stabilizer is obtained in the mode that alpha-chlorinated acrylic acid and functional monomers are subjected to free radical polymerization and then hydrolyzed; the functional monomer is obtained by firstly carrying out ammonolysis reaction on diethylenetriamine and allyl glycidyl ether to obtain an intermediate, then mixing the intermediate with sodium chloroacetate and carrying out reaction under an alkaline condition, and by introducing the functional monomer containing the carboxylic acid group, the stability of hydrogen peroxide is improved; and invalid decomposition caused by metal ion catalysis is reduced.

The present invention relates to the field of new material technologies, and discloses a flame-retardant fabric, a preparation method thereof and an application thereof. The method includes: (1) performing a first contact reaction on diethylenetriamine, vinylsilane and epoxy group-containing silane to obtain diethylenetriamine-silane; (2) performing a first dilution of the diethylenetriamine-silane in solvent I, adjusting the pH to obtain a diethylenetriamine-silane solution, immersing the fabric in the diethylenetriamine-silane to perform a first immersion to obtain a flame-retardant treated fabric I; (3) performing a second contact reaction on tetrakis(hydroxymethyl)phosphonium sulfate, urea and water to obtain a pre-polymerized tetrakis(hydroxymethyl)phosphonium sulfate flame retardant; (4) immersing the flame-retardant treated fabric I in the pre-polymerized tetrakis(hydroxymethyl)phosphonium sulfate flame retardant to perform a second immersion to obtain a flame-retardant fabric. The flame-retardant fabric prepared by the method provided by the present invention has excellent flame-retardant effect, the method is simple and efficient, and there is no need for gas to participate in the reaction, the cost is low, and it is suitable for mass production.

The invention discloses a dental whitening gel and a preparation method thereof, and belongs to the technical field of oral medicine. Comprising the following components in percentage by mass: 10%-20% of urea peroxide, 0.5%-1% of sodium alginate, 1%-2% of tea tree oil, 2%-3% of dipotassium phosphate, 2%-4% of monopotassium phosphate, 3%-5% of carbomer, 3%-5% of glycerol, 59%-78% of deionized water and 0.5%-1% of pentasodium diethylenetriamine pentaacetate. The oral cavity cleaning agent has high safety, and does not have serious toxicity and irritation to the oral cavity.

The invention provides a cationic waterborne epoxy hardener without containing free amine and a preparation method thereof, and relates to the technical field of epoxy hardeners, the method comprises the following steps: 1) mixing small molecular aldehyde and hydroxyethyl diethylenetriamine for reaction to obtain oxazolidine and aldimine terminated modified amine; (2) carrying out reaction on the modified amine and polyfunctional epoxy resin to obtain modified oxazolidine and aldimine-terminated modified resin amine; 3) mixing the modified oxazolidine and aldimine terminated modified resin amine, monofunctional glycidyl ether and water for reaction to obtain terminated modified resin amine; and 4) adding small molecular acid to neutralize the terminated modified amine, and transferring water to obtain the cationic waterborne epoxy curing agent without free amine. The paint film can be endowed with excellent boiling water resistance, acid and alkali resistance, neutral salt mist resistance and the like, the preparation process is simple, the production cost is low, and the paint is suitable for large-scale industrial application.

The invention provides degradation liquid capable of degrading amine cured epoxy resin, a degradation recovery method and a regeneration method of the amine cured epoxy resin. The degradation liquid comprises an amine compound, an inorganic alkali solution and water. Wherein the ratio of the amine compound is 15%-30%, the ratio of the inorganic alkali solution is 6%-20%, and the balance is water; the amine compound comprises monoethanolamine, diethylenetriamine and triethylene tetramine in a volume ratio of 1: (1-2): (1-2). In the degradation liquid disclosed by the invention, monoethanolamine realizes amidation of degradable weak bonds in an epoxy resin cured substance under the promotion of diethylenetriamine and triethylene tetramine, and realizes degradation of amine cured epoxy resin; the degradation liquid provided by the invention can be used for rapidly and completely degrading a degradable epoxy resin cured product at a relatively low degradation temperature (about 100 DEG C), the degradation product is simply separated and purified to resynthesize the degradable epoxy resin, and the degradation liquid can be recycled through simple distillation.

The invention provides a curing agent, a two-component coating, a coating and application of the two-component coating and the coating, and belongs to the technical field of heavy anti-corrosion coatings. The curing agent provided by the invention is prepared from the following raw materials in parts by mass: 60-85 parts of a phenolic aldehyde amine curing agent, 5-20 parts of diethylenetriamine and 5-20 parts of a hydroxymethyl urea compound. The hydroxymethylurea compound is introduced into the curing agent, and carbonyl of the hydroxymethylurea compound has a strong electron withdrawing effect, so that adjacent secondary amino groups hardly participate in an epoxy curing reaction at room temperature; hydrogen on a secondary amine group in the introduced hydroxymethyl urea compound and hydroxymethyl of the hydroxymethyl urea compound are subjected to a dehydration self-polymerization reaction to form a macromolecular product, so that erosion of hydrogen ions is effectively prevented, internal gaps of the coating are filled, further corrosion of water, the hydrogen ions and salt to the coating is prevented, and the purpose of resisting acid corrosion is achieved.

The present invention relates to a composite boron powder and a preparation method thereof. The composite boron powder is prepared by a secondary condensation method using a vinylidene fluoride / propylene alcohol copolymer as a compounding agent, a polyethylene glycol monobutyl ether acrylate / acrylonitrile / allylamine / hydroxyethyl acrylate copolymer as an auxiliary compounding agent, an epoxy resin as a high-strength composite adhesive, and diethylenetriamine as a curing agent. The amounts of the components are based on the mass of the boron powder: the mass of the vinylidene fluoride / propylene alcohol copolymer is 1-2% of the mass of the boron powder, the mass of the polyethylene glycol monobutyl ether acrylate / acrylonitrile / allylamine / hydroxyethyl acrylate copolymer is 0.3-1% of the mass of the boron powder, the mass of the epoxy resin is 2-3% of the mass of the boron powder, and the mass of the diethylenetriamine is 0.15-0.4% of the mass of the boron powder.

A polyhydric alcohol amine absorbent suitable for a CO2 capture process from a flue gas with a low CO2 partial pressure, which takes continuous operation stability and safety into account. The polyhydric alcohol amine absorbent comprises the following main components: a main absorbent, an auxiliary absorbent, an antioxidant, a corrosion inhibitor and water, and the concentration of the absorbent is 22-58% by mass fraction, wherein the main absorbent comprises one or two of diethylenetriamine, N,N-diethylethanolamine and hydroxyethyl ethylenediamine; the auxiliary absorbent comprises one or two of monoethanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol and 2-amino-2-methyl-1-propanol; the antioxidant comprises one or two of butanone oxime, acetoxime, hydrazine carbonate and ammonium sulfite; the corrosion inhibitor is sodium vanadate; and the balance is desalinated water.

The invention discloses a modification method and application of double-layer impregnated modified aramid fiber, and the double-layer impregnated modified aramid fiber is prepared by the following steps: reacting hexamethylene diisocyanate and glycerol triglycidyl ether in a water phase to form a first-layer impregnation liquid, and carrying out first-layer impregnation modification on aramid fiber; and forming a second-layer impregnation liquid from ethylene glycol diglycidyl ether, diethylenetriamine, glycidyl methacrylate and butadiene-vinylpyridine rubber latex, performing second-layer impregnation modification on the aramid fibers, drying after double-layer modification to obtain double-layer impregnation modified aramid fibers, and blending and vulcanizing the double-layer impregnation modified aramid fibers and rubber to obtain the rubber-modified aramid fibers. The modified aramid fiber reinforced butadiene styrene rubber composite material can be prepared. By designing a two-step dipping treatment system containing isocyanate and epoxy bifunctional groups, efficient chemical modification of the aramid fiber surface is realized, and a good reaction interface with a rubber matrix is endowed.

The invention relates to the technical field of oilfield chemistry, and discloses an emulsifier, a response agent, a thick oil viscosity reduction method and application. The emulsifier is prepared from nano aluminum oxide, zwitterionic polyacrylamide and alkyl diethylenetriamine according to the mass ratio of 1 to (0.1 to 3) to (7 to 25); wherein the average particle size of the nano aluminum oxide is 30 to 300 nm. When the emulsifier provided by the invention is used for reducing the viscosity of the heavy oil, a stable emulsion can be obtained in the presence of CO2, quick demulsification can be realized by discharging CO2, the stability and quick response effect can still be kept after multiple cycles, and the emulsifier is particularly suitable for reducing the viscosity of the heavy oil.

The invention relates to the technical field of discharge aiding agents, in particular to a composite synergistic discharge aiding agent and a preparation method thereof. The composite synergistic discharge aiding agent is prepared from the following raw materials in percentage by weight: 6-10% of dodecyl dimethyl benzyl ammonium chloride, 2-4% of enzymolysis sodium lignin sulfonate, 1-3% of diethylenetriamine, 0.4-1.2% of a first additive, 0.2-0.4% of a second additive, 0.1-0.3% of a protective agent, 0.1-0.3% of a regulator and the balance of water. According to the invention, after the sodium lignin sulfonate is subjected to directional enzymolysis treatment by cellulase, the density of a sulfonic acid group is increased, the effect of inhibiting particle aggregation can be achieved, and meanwhile, residual cellulose in a molecular chain can be degraded, the molecular weight is reduced, and exposure of the sulfonic acid group is increased, so that the water solubility and the dispersing capacity of the sodium lignin sulfonate are improved; solid particles in a stratum can be better dispersed, pore channels are prevented from being blocked, and the use performance of the cleanup additive is effectively improved.

The invention provides a diesel oil anti-wear agent and a preparation process thereof, and belongs to the technical field of diesel oil additives, and the preparation process comprises the following steps: mixing and stirring diisooctyl maleate and xylene, adding diethylenetriamine and deionized water, carrying out heating reaction, adding toluene, 4-(aminomethyl) pyridine and ethylene oxide, carrying out mixing reaction, filtering, washing, and drying to obtain the diesel oil anti-wear agent. The pyridinium-based polyester hollow capsule is prepared; the preparation method comprises the following steps: mixing xylene, catechol, ethylene phosphonic acid, ammonium persulfate and deionized water, heating, dispersing in cyclohexane, adding polyvinyl alcohol, octadecyl methacrylate and azodiisobutyronitrile, mixing and reacting to obtain catechol phosphonate nano colloidal particles; mixing and stirring the fatty acid ester solution, the oleoyl fluorocarbon copolymer and the pyridinium-based polyester hollow capsule, adding the catechol phosphonate nano colloidal particles, continuously stirring, performing ultrasonic treatment, and degassing to obtain the diesel oil anti-wear agent. The diesel oil antiwear agent can improve the antiwear property and demulsibility of the diesel oil antiwear agent.