28 results about "Dimethylaminopropylamine" patented technology

The invention discloses antibacterial acarus-killing shampoo and a preparation method thereof, and relates to the technical field of daily chemicals. When the antibacterial mite-killing shampoo is prepared, firstly, long-carbon-chain alkyl acid reacts with 3-dimethylaminopropylamine to prepare long-carbon-chain amidated tertiary amine; reacting the long-carbon-chain amidated tertiary amine with ethylene 2-(methacryloyloxy) ethyl phosphate to obtain a phosphatidylated quaternary ammonium monomer; the preparation method comprises the following steps: copolymerizing a phosphatidylated quaternary ammonium monomer and N-vinyl pyrrolidone to prepare a modified phosphatidylated quaternary ammonium random copolymer; and mixing the modified phosphatidylated quaternary ammonium random copolymer with an auxiliary agent and water to prepare the antibacterial acarus-killing shampoo. The antibacterial and acarus-killing shampoo prepared by the invention has the advantages of being antibacterial, acarus-killing, hair-repairing and long-acting in adsorption.

The present invention discloses a low-corrosive phase-change absorbent and its application in carbon dioxide capture, belonging to the field of carbon dioxide capture and separation technology. The low-corrosive phase-change absorbent comprises the following components by weight: 10-30% of a main absorbent, 1-10% of an activator, 30-60% of a phase separator, and the balance being water. The phase-change absorbent of the present invention uses 3-aminopropanol (MPA) as the main absorbent, 3-dimethylaminopropylamine (DMAPA) as the activator, and polyethylene glycol dimethyl ether (NHD) as the phase separator, and has the advantages of low energy consumption and low corrosivity.

The invention relates to the field of water treatment, and discloses a self-tracing type scale and corrosion inhibitor based on a novel fluorescent copolymer and a preparation method, and the scale and corrosion inhibitor comprises the following components: the novel fluorescent copolymer, an auxiliary polymer, a conventional AMPS copolymer, organic phosphonate, zinc salt and the balance of water. The novel fluorescent copolymer is obtained by carrying out copolymerization reaction on a fluorescent monomer B, acrylic acid and 2-acrylamido-2-methylpropanesulfonic acid; and the fluorescent monomer B is prepared by reacting 4-chloro-1, 8-naphthalic anhydride with 3-dimethylaminopropylamine, reacting the product with sodium methoxide, and further reacting the obtained intermediate with chloropropene. And the auxiliary polymer is a lauryl methacrylate-N, N-dimethylaminoethyl methacrylate copolymer. According to the self-tracing type scale and corrosion inhibitor, the fluorophore is covalently bonded to a polymer main chain, accurate online monitoring of the concentration of the agent is achieved, and the self-tracing type scale and corrosion inhibitor has excellent scale and corrosion inhibition performance.

The invention discloses an ampholytic surfactant and a preparation method thereof. The surfactant is a novel surfactant with two hydrophilic head groups and two hydrophobic tail chains and containing a rigid structure, benzoic acid and thionyl chloride are subjected to a substitution reaction to generate benzoyl chloride, then benzoyl chloride and 3-dimethylamino propylamine are subjected to a reaction to obtain N-[3-(dimethylamino) propyl] benzamide, and the N-[3-(dimethylamino) propyl] benzamide is subjected to a reaction to obtain N-[3-(dimethylamino) propyl] benzamide. Reacting N-[3-(dimethylamino) propyl] benzamide with alkyl bromide to obtain a quaternary ammonium salt intermediate product; and finally carrying out addition reaction on the quaternary ammonium salt intermediate and sodium bromoethanesulfonate to obtain the quaternary ammonium salt. According to the ampholytic surfactant prepared by the preparation method disclosed by the invention, the strong acting force of anion and cation bonds is utilized, so that the distance between hydrophilic head groups is smaller than that of a common surfactant, the critical micelle concentration of the ampholytic surfactant is lower, and the ampholytic surfactant has better emulsifying performance and cleaning capability, so that the ampholytic surfactant has better performance in the field of cleaning of IGBT chips.

The invention discloses an environment-friendly antibacterial plant-based fabric and a preparation method thereof, and belongs to the technical field of textiles. The environment-friendly antibacterial plant-based fabric is obtained by blending and weaving mint fibers, modal fibers and anti-mosquito linen fibers, the anti-mosquito linen fiber is prepared from the following raw material components: a wormwood extracting solution, modified aluminum nitride, a dispersing agent and linen fiber, wherein the modified aluminum nitride is obtained by coating modified aluminum nitride with a polysiloxane coupling agent; the polysilane coupling agent is obtained by polymerizing furfural disiloxane and hydroxyl polyethylene glycol triethoxy silane; the dispersing agent is obtained by mixing and reacting coconut oil, 3-dimethylaminopropylamine, 2-hydroxy-4-aminoacetophenone and aluminoacetic acid.

The application belongs to the technical field of sewage treatment and specifically relates to an oilfield water treatment corrosion inhibitor and a synthesis method thereof. The synthesis method comprises the following steps: in the presence of a reducing agent, 2-acetyl-2-thiazoline and N,N-dimethylaminopropylamine are subjected to a reductive amination reaction in a weak acid solvent; and then, in a weak alkaline environment, the reductive amination product is subjected to a tertiary amination reaction with chloroacetic acid. Based on 1 mol of 2-acetyl-2-thiazoline, the N,N-dimethylaminopropylamine and the chloroacetic acid are 0.9-1.1 mol and 0.9-1.3 mol, respectively. The application has the advantages of simple synthesis process, small dosage and good corrosion inhibition effect, and when the concentration is 10 mg / L, the corrosion inhibition rate reaches more than 97%.

The invention discloses a deep eutectic solvent material based on an organic alkaline compound and a preparation method of the deep eutectic solvent material, the material is composed of protic ionic liquid and polyhydric alcohol, and the protic ionic liquid is composed of the organic alkaline compound and an acidic component; the organic alkali compound is selected from one or more of 3-dimethylaminopropylamine, 1, 8-diazabicyclo [5.4. 0] undec-7-ene or 1, 5-diazabicyclo [4.3. 0] nonyl-5-ene, and the acidic component is selected from one or more of a phenolic compound or a nitrogen-containing heterocyclic compound. The fluidity of the system is improved by adjusting the content of the polyhydric alcohols. The chemical composition of the deep-eutectic solvent keeps stable and does not change obviously when the deep-eutectic solvent is heated to 130 DEG C. The deep-eutectic solvent material provided by the invention is simple in preparation process, mild in condition and easy in raw material obtaining, has good thermal stability and uniform liquid state characteristic, and provides a new thought for design and application of a functional solvent.

The present invention discloses a cationic surfactant and its preparation and application. The structure of the cationic surfactant is: #imgabs0# A method for preparing the cationic surfactant comprises: (1) reacting dehydroabietic acid with thionyl chloride under the catalysis of 4-dimethylaminopyridine to obtain dehydroabietic acid chloride; (2) reacting dehydroabietic acid chloride with aminoundecanoic acid methyl ester hydrochloride to obtain compound 1; (3) reacting compound 1 with 3-dimethylaminopropylamine to obtain compound 2; and (4) reacting compound 2 with ethyl bromide to obtain the cationic surfactant. The cationic surfactant provided by the present invention can have high viscoelasticity at a relatively low concentration and has low application cost.

The utility model relates to the technical field of separation devices, and discloses a continuous separation device for a 3-dimethylaminopropylamine aqueous solution, which comprises a reaction body, the reaction body comprises a shell, a reaction chamber is arranged in the middle of the upper surface of the shell, the reaction body can provide a mixing and reaction place for the device, the device is ensured to fully react, and the reaction time is shortened. A telescopic connecting mechanism is fixedly connected to the back surface of the reaction body and comprises a telescopic rod. The device has the following advantages and effects that through the arrangement of the reaction body, the filter box and the liquid separation tank, a worker introduces waste liquid from the waste liquid feeding end, medicines are fed from the feeding end, the solution is uniformly mixed in the reaction body through the stirring mechanism, and the mixed solution is introduced into the filter box to separate fatty acid soap generated by reaction; and alkali liquor and amine liquor are introduced into the liquid separation tank and are respectively discharged from the amine liquor outlet and the alkali liquor outlet, so that repeated fractionation is not needed, and the effect of reducing the cost is achieved.

The present invention provides an antifouling and wear-resistant acrylic sheet and a preparation method thereof, belonging to the technical field of acrylic sheets. The preparation method comprises: preparing a modifier; modifying carbon nanotubes; preparing an antifouling additive; and preparing the antifouling and wear-resistant acrylic sheet. The present invention comprises first dissolving polysuccinimide and dopamine hydrochloride separately, mixing and reacting them, then adding 3-dimethylaminopropylamine for reaction, and finally adding 1,3-propane sultone for reaction to obtain a modifier containing zwitterionic groups. Using this modifier to modify the acidified carbon nanotubes can significantly improve the wear resistance and antifouling properties of the resulting acrylic sheet.

The invention discloses a dry conductive agent for a solid-state battery and a preparation method of the dry conductive agent, and belongs to the technical field of batteries. The dry conductive agent for the solid-state battery comprises the following raw material components: carbon nanotubes, acyl halide conductive carbon black, graphene, functionalized lithium carboxymethyl cellulose and functionalized styrene-butadiene rubber. The functionalized lithium carboxymethyl cellulose is obtained by compounding lithium carboxymethyl cellulose, 3-dimethylaminopropylamine and 3-aminopyrrole; the functionalized styrene butadiene rubber is obtained by copolymerizing and grafting lithium p-styrenesulfonate and 3-butene-1, 2-diol and then reacting with 3, 4-dibromothiophene; the dry conductive agent for the solid-state battery is prepared by the following steps: firstly, mixing carbon nanotubes, acyl halogenated conductive carbon black and graphene to obtain a mixture I; then mixing the functionalized lithium carboxymethyl cellulose and the functionalized styrene-butadiene rubber, and carrying out electrochemical treatment to obtain a mixture II; and finally, uniformly mixing the mixture I and the mixture II, sanding, homogenizing, drying and crushing to obtain the dry conductive agent for the solid-state battery.

The invention discloses a micromolecular sizing agent, a synthesis method thereof, a sizing agent solution and application, and belongs to the technical field of papermaking chemicals. The sizing agent has a double-long-chain secondary amine structure as shown in a general formula R2N (C3H6) N (CH3) 2, in which R is long-chain alkyl CnH2n + 1, and n is 14, 16 or 18. The synthesis method of the micromolecular sizing agent comprises the following steps: mixing 3-dimethylaminopropylamine and alkyl bromide in a molar ratio of 1: (2.0-2.5), and adding absolute ethyl alcohol as a solvent to prepare a mixture; and carrying out a heating reflux reaction on the mixture, and after the reaction is completed, sequentially carrying out reduced pressure distillation and recrystallization to prepare the micromolecular sizing agent. A brand new physical and chemical mechanism of electrostatic anchoring-hydrophobic shielding is utilized, and cellulose-based materials such as paper and the like are efficiently and instantly endowed with excellent hydrophobic performance under a neutral or alkaline mild condition.

The present invention belongs to the technical field of polyurethane foaming, and specifically relates to a polyurethane foaming catalyst, a preparation method, and a polyurethane sponge. The polyurethane foaming catalyst comprises a main catalyst and a co-catalyst in a mass ratio of (6-8):1; the main catalyst comprises 3-dimethylaminopropyl urea and dimethylaminopropylamine diisopropyl alcohol; and the co-catalyst comprises bisdimethylaminopropylamine isopropyl alcohol and N,N,N'-trimethyl-N'-(2-hydroxyethyl)bis(2-aminoethyl) ether. The polyurethane foam prepared using the catalyst has low odor, low content of volatile harmful compounds, high rebound rate, low cell collapse rate, and good antistatic properties.

The application provides a novel oil-based drilling cuttings oil washing agent and a preparation method and an oil washing method thereof. The preparation method of the oil washing agent comprises the following steps: (1) mixing 3-dimethylaminopropylamine or diethylamine with a first solvent, adding perfluoroalkylsulfonyl fluoride or perfluoroalkyl acyl fluoride dropwise under an ice water bath, reacting at 30-60 DEG C for 2-4 hours, removing the solvent, and generating a fluorine-containing intermediate; (2) mixing the fluorine-containing intermediate with a second solvent at 60-90 DEG C, adding 3-chloro-2-hydroxypropane sulfonate sodium salt, sodium chloroacetate or 2-chloroethyl sulfonate sodium, adjusting the pH to be under alkaline conditions, and reacting for 5-12 hours to obtain a fluorine-containing amphoteric ion type oil washing agent. The oil washing agent can exert a good oil washing effect while avoiding the formation of oil-water emulsion, and the preparation method is simple, convenient, fast, efficient, and low in cost.

The present invention belongs to the field of organic synthesis, and particularly relates to a foaming catalyst bis(3-ethoxypropyl)dimethylaminopropylamine, a preparation method therefor, and the use of same in preparing a high-density high-strength polyurethane foam. The structural formula of bis(3-ethoxypropyl)dimethylaminopropylamine provided herein is as shown in (I). Also provided is the use of bis(3-ethoxypropyl)dimethylaminopropylamine: as a foaming catalyst for preparing the high-density high-strength polyurethane foam. A polyurethane foam prepared by means of applying bis(3-ethoxypropyl)dimethylaminopropylamine to a polyurethane foam formula has the advantages of high density and high strength.

This invention discloses a reverse demulsifier for oilfield produced fluid treatment, prepared using the following steps: N-(3-dimethylaminopropyl)methacrylamide, methyl chloroacetate, and the polymerization inhibitor p-hydroxyanisole are added to a solvent and reacted at a constant temperature for 10 hours. After cooling, dimethylaminopropylamine is added dropwise and reacted at room temperature for 1 hour. Then, p-hydroxyanisole is added and the reaction is heated for 4 hours. Next, etherifying agent Quat-188 with an effective content of 65% is added and the reaction is heated for 10 hours. After removing the solvent, a high cationic density monomer is obtained. Then, the high cationic density monomer and 2-(dodecyltrithiocarbonate)-2-methylpropionic acid are dissolved in anhydrous ethanol and an initiator and reacted at a constant temperature and with stirring for 3 hours. Then, acrylate monomers are added, nitrogen is purged to remove oxygen, an initiator is added, and the reaction is heated for 3 hours to obtain the product. The reverse demulsifier for oilfield produced fluid treatment proposed in this invention has a stronger ability to neutralize the negative charge of oil droplets and can be applied to the demulsification treatment of high-concentration oily wastewater under more severe conditions.

This invention relates to cosmetic compositions comprising hyperbranched copolymers of the following monomers having quaternary terminal groups: dodecenyl succinic anhydride, diisopropanolamine, and bis(dimethylaminopropylamine); and at least one acrylic polymer liquid dispersion, said acrylic polymer being a homopolymer or copolymer of monomers selected from the group consisting of: (meth)acrylic acid, (meth)acrylate, (meth)acrylamide, and amides of (meth)acrylic acid.

The invention relates to the field of textile auxiliaries, in particular to a preparation method of block silicone oil for polyester cotton-like finishing. The flame retardant is prepared from the following raw materials: terephthalic acid diglycidyl ester, 3-dimethylaminopropylamine, double-end epoxy polyether silicone oil and the like. The preparation method comprises the following steps: reacting diglycidyl terephthalate with 3-dimethylaminopropylamine to prepare a tertiary amine-terminated intermediate, and reacting the tertiary amine-terminated intermediate with double-terminated epoxy polyether silicone oil to prepare the quaternization modified block silicone oil. The polyester fabric finished by the quaternization modified block silicone oil has excellent soft, fluffy, hydrophilic and antistatic properties, and the finished polyester fabric presents a soft, dry and skin-friendly cotton-like touch style.

The present invention belongs to the technical field of perovskite solar cells. A method for preparing an efficient perovskite solar cell by using an ammonium salt-modified SnO₂ electron transport layer, and a perovskite solar cell device structure, which from bottom to top are a conductive glass substrate, an electron transport layer, a perovskite layer, a hole transport layer and a metal electrode in sequence. Compared with the traditional SnO₂ electron transport layer, adding the ammonium salt dimethylaminopropylamine hydroiodide (DMAPAI₂) to SnO₂ can effectively improve the interface between the electron transport layer and the perovskite. It can not only effectively improve the electrical properties of the electron transport layer, but also simultaneously affect the crystallization process of the upper perovskite, making the grain size of the perovskite increase. Based on the DMAPAI₂-modified SnO₂ as the electron transport layer, a perovskite solar cell with high photoelectric conversion efficiency is prepared.

The invention discloses an anacardol Gemini cationic surfactant and a preparation method thereof, and the preparation method comprises the following steps: step 1, adding anacardol, 3-dimethylaminopropylamine and formaldehyde into ethanol, then carrying out a reaction under stirring and high temperature conditions, and after the reaction is completed, carrying out post-treatment on a product to obtain a tertiary amine intermediate CP-T; and 2, dissolving the intermediate CP-T obtained in the step 1 and 1, 4-dibromobutane in acetonitrile, carrying out a reaction under stirring and high temperature conditions, and after the reaction is completed, carrying out post-treatment on the product to obtain the cardanol-based Gemini cationic surfactant CPS-G. According to the method disclosed by the invention, the biomass cardanol is taken as a main raw material, the process is simple and environment-friendly, and the prepared surfactant not only has natural and degradable environment-friendly characteristics, but also shows good surface activity.

The invention discloses a toughened modified PVC (polyvinyl chloride) material and a preparation method thereof, and relates to the technical field of high polymer materials. When the toughened modified PVC material is prepared, the surface of potassium titanate whisker is coated with tin antimony oxide precipitate to prepare coated modified whisker; enabling the coated modified crystal whiskers to react with chloropropyl trimethoxy silane to obtain modified crystal whiskers; the preparation method comprises the following steps: reacting phenyl phosphoryl dichloride with dimethylaminopropylamine diisopropanol to prepare a flame-retardant chain extender; the preparation method comprises the following steps: reacting 2-chloro-4, 6-diamino-1, 3, 5-triazine with straight-chain alkylamine to prepare a draping chain extender; carrying out reaction polymerization on diisocyanate, dihydric alcohol and a chain extender to prepare modified polyurethane; pVC resin, modified polyurethane, modified whiskers, a plasticizer, a heat stabilizer and an antioxidant are plastified and blended and then subjected to hot press molding, and the toughened modified PVC material is prepared. The toughened and modified PVC material prepared by the invention has the advantages of flame retardance, antistatic property, high toughness and good mechanical strength.

The application discloses antibacterial and acaricidal shampoo and a preparation method thereof, and relates to the technical field of daily chemicals. When the antibacterial and acaricidal shampoo is prepared, long carbon chain alkyl acid is first reacted with 3-dimethylaminopropylamine to obtain long carbon chain amidated tertiary amine; the long carbon chain amidated tertiary amine is reacted with ethylene 2-(methacryloyloxy)ethyl phosphate to obtain phosphatidylated quaternary ammonium monomer; the phosphatidylated quaternary ammonium monomer is copolymerized with N-vinylpyrrolidone to obtain modified phosphatidylated quaternary ammonium random copolymer; and the modified phosphatidylated quaternary ammonium random copolymer is mixed with an additive and water to obtain the antibacterial and acaricidal shampoo. The antibacterial and acaricidal shampoo prepared by the application has the advantages of antibacterial property, acaricidal property, hair repair, and long-acting adsorption.

This invention provides a method for preparing 2,4,6-tris[(3-dimethylaminopropyl)aminomethyl]phenol, comprising mixing phenol, N,N-dimethylaminopropylamine, a catalyst, and a solvent to obtain a mixture; adding an aqueous formaldehyde solution dropwise to the mixture; heating and maintaining the temperature until the reaction is complete after the addition is finished; purifying the reactants by acid-base extraction to obtain the 2,4,6-tris[(3-dimethylaminopropyl)aminomethyl]phenol product; wherein the catalyst is a Brønsted acid or a Lewis acid. This invention, by introducing a Brønsted acid or a Lewis acid as a catalyst, effectively reduces the activation energy of the Mannich reaction, inhibits side reactions such as hydroxymethylation, and improves the yield and purity of the target product; combined with the acid-base extraction purification process, the product yield can reach over 90%, the purity exceeds 97%, and the product has a light color and excellent appearance. The reaction conditions of this invention are mild and controllable, the reaction time is shortened, and the amount of waste emissions is low, making it suitable for large-scale industrial production.

The invention discloses a skin-friendly antibacterial fiber and a preparation method thereof, and relates to the field of fiber fabrics. When the skin-friendly antibacterial fiber is prepared, zinc nitrate and copper nitrate react and then are calcined to prepare copper / zinc oxide nanoparticles, and the copper / zinc oxide nanoparticles are activated by N, N '-carbonyldiimidazole and then react with DL homocysteine thiolactone hydrochloride and 3-dimethylaminopropylamine to prepare modified copper / zinc oxide nanoparticles; the preparation method comprises the following steps: reacting octamethylcyclotetrasiloxane with 3-chloropropylmethyldimethoxysilane, and then reacting with hydroxypropyl silicone oil to prepare polysiloxane; the preparation method comprises the following steps: reacting 1, 3-propylene glycol, dimethyl terephthalate and polytetramethylene ether glycol to prepare pre-polyester; reacting the pre-polyester with polysiloxane to obtain modified polyester; and carrying out melt extrusion, granulation and spinning on the modified polyester and the modified copper / zinc oxide nanoparticles by a twin-screw extruder. The prepared skin-friendly antibacterial fiber has good antibacterial performance and good skin-friendly performance.

The present invention discloses the preparation and application of an efficient temperature-sensitive system, which belongs to the field of surfactant applications and the field of intelligent materials. The present invention utilizes a novel quaternary ammonium salt surfactant synthesized from a straight-chain saturated fatty acid, methanol, 3-dimethylaminopropylamine, and (3-bromopropyl)trimethylammonium bromide; based on the novel quaternary ammonium salt surfactant, an efficient temperature-sensitive system is obtained. The temperature-sensitive system obtained by the present invention responds to temperature very quickly and can still maintain extremely high viscoelasticity at higher temperatures. After adding a certain amount of additives such as inorganic salts / organic salts to the temperature-sensitive system of the present invention, the composite system still maintains a relatively high temperature response capability, and has important application value in the fields of making children's toys, sensing elements, targeted drug release, thermal recognition systems, etc.

This invention discloses a toughened modified PVC material and its preparation method, relating to the field of polymer materials technology. In preparing the toughened modified PVC material, the invention first coats the surface of potassium titanate whiskers with antimony tin oxide precipitate to obtain coated modified whiskers; reacts the coated modified whiskers with chloropropyltrimethoxysilane to obtain modified whiskers; reacts phenylphosphodichloro with dimethylaminopropylamine diisopropanol to obtain a flame-retardant chain extender; reacts 2-chloro-4,6-diamino-1,3,5-triazine with linear alkylamine to obtain a draping chain extender; reacts diisocyanate, diol, and chain extender to polymerize and obtain modified polyurethane; and then plasticizes and blends PVC resin, modified polyurethane, modified whiskers, plasticizer, heat stabilizer, and antioxidant, followed by hot pressing to obtain the toughened modified PVC material. The toughened modified PVC material prepared by this invention has the advantages of flame retardancy, antistatic properties, high toughness, and good mechanical strength.

The application belongs to the field of organic synthesis, and particularly relates to a foaming catalyst, bis(3-ethoxypropyl)dimethylaminopropylamine and a preparation method thereof, and application of the bis(3-ethoxypropyl)dimethylaminopropylamine in preparation of high-density and high-strength polyurethane foam. 15 H 24 N2O2, a molecular weight is 274.26, and a structural formula is: The application also simultaneously provides application of the bis(3-ethoxypropyl)dimethylaminopropylamine as a foaming catalyst for preparing high-density and high-strength polyurethane foam. The bis(3-ethoxypropyl)dimethylaminopropylamine is used in a polyurethane foam formula, and polyurethane foam prepared by the bis(3-ethoxypropyl)dimethylaminopropylamine has the advantages of high density and high strength.

The invention discloses a modified lignosulfonate surfactant and application thereof, and belongs to the technical field of surfactant preparation.Dimethylaminopropylamine and lauroyl chloride are acylated to obtain an amide intermediate, then the amide intermediate and 2-bromoethyl acrylate are quaternized, a double-bond structure capable of participating in a free radical reaction is introduced, and the modified lignosulfonate surfactant is obtained. The preparation method comprises the following steps: adding alkyl amide quaternary ammonium salt containing double bonds to form alkyl amide quaternary ammonium salt containing double bonds, introducing the double bonds to subsequently realize free radical grafting with lignosulfonate and improve the structural stability and surface activity, and then grafting the quaternary ammonium salt containing double bonds to a lignosulfonate skeleton under the initiation of potassium persulfate to obtain the modified lignosulfonate surfactant. The obtained modified lignosulfonate surfactant is compounded with amphiphilic nano silicon dioxide and polyacrylamide to construct the oil displacement agent, and the oil displacement agent has better interface stability and higher displacement efficiency in a high-salt environment due to the overall synergistic effect.