23results about How to "High interface activity" patented technology

The invention relates to the technical field of knitted fabrics, in particular to a waterproof warm-keeping elastic knitted fabric, a preparation method and application of the waterproof warm-keeping elastic knitted fabric to clothing, and the preparation method of the waterproof warm-keeping elastic knitted fabric comprises the following steps: uniformly blending a resin glue solution, a modified filler agent and a nano titanium dioxide agent to obtain a modified glue solution; wherein the resin glue solution is obtained by uniformly and fully mixing bisphenol A epoxy resin, a silane coupling agent KH560, an ethanol solvent and 2-methylimidazole; blending 45% by weight of cotton and 55% by weight of modal to form a blended yarn, brushing the surface of the blended yarn with the modified glue solution, and drying at 65 DEG C for 2 hours to obtain a modified blended yarn body; the polyester yarn and the modified blended yarn body are woven into the fabric through a knitting machine according to the weight ratio of 5: 3, and the waterproof warm-keeping elastic knitted fabric is obtained. The obtained knitted fabric is excellent in elastic performance, heat preservation performance and waterproof performance, and the fabric product is remarkable in durable use performance effect.

The preparation method comprises the steps that firstly, a carbon source and a nitrogen source are stirred and mixed to be uniform, alkylamine polyoxyethylene ether is added into the mixture under the water bath heating condition, the mixture is sealed and stirred to form a light yellow block, then a solid-phase pyrolytic reaction is conducted, and a black solid product is obtained; grinding the black solid product, dispersing in n-hexane, and washing; and adding absolute ethyl alcohol and further washing by combining ultrasonic waves to obtain a black powdery product. Dissolving the product in deionized water, filtering and purifying, and carrying out centrifugal separation on the obtained black liquid; dialyzing the clear liquid, and finally drying the solution in a dialysis bag to obtain the nitrogen-doped quantum dots. Preparing nitrogen-doped quantum dot dispersion liquid by using on-site injection fluid; and injecting the dispersion liquid into a target reservoir, soaking for 1-2 days, and then opening the well for production. The nitrogen-doped quantum dots are suitable for low-permeability (ultra-low permeability) oil reservoirs, compact oil reservoirs and shale oil reservoirs, and the recovery efficiency of crude oil is economically and efficiently improved.

The invention provides a brominated butyl rubber piston for a pre-filled syringe and a preparation method of the brominated butyl rubber piston, and relates to the technical field of rubber pistons. The brominated butyl rubber piston comprises a basic elastomer and an inert barrier film covering the surface of the basic elastomer. The basic elastomer comprises brominated butyl rubber, bio-based rubber, polyisobutene, talcum powder, calcined kaolin, carbon black, magnesium powder, titanium dioxide, sulfur, active magnesium oxide, polytetrafluoroethylene wax and a slip agent; the inert barrier membrane is polytetrafluoroethylene modified by modified polydimethylsiloxane. The pharmaceutical composition has good drug compatibility and administration convenience, and ensures the safety of medication.

The invention relates to a preparation method of a diformaldehyde gemini surfactant. Mannich reaction is adopted, a long-chain fatty amine component, glyoxal and sodium hydrogen sulfite are used as reaction raw materials, a single variable method is used for controlling reaction conditions, and the optimal conditions of the reaction are explored as follows: the reaction temperature is 60 DEG C, the reaction time is 5 h, and the molar ratio of glyoxal to sodium hydrogen sulfite is 1: 2.3. Then, all products are dissolved with trichloromethane, ethyl acetate is added into the solution to separate out the products, the products are treated through a secondary crystallization method, the product calculation yield is obtained, and the content of 1, 2-bis (dodecyl amino) ethane-1, 2-sodium disulfonate, 1, 2-bis (tetradecyl amino) ethane-1, 2-sodium disulfonate, 1, 2-bis (hexadecyl amino) ethane-1, 2-sodium disulfonate, 1, 2-bis (hexadecyl amino) ethane-1, 2-sodium disulfonate and 1, 2-bis (hexadecyl amino) ethane-1, 2-sodium disulfonate is measured. The synthetic yields of the 1, 2-sodium disulfonate are 65.8%, 67.5% and 76.8% respectively. And characterization is carried out through a nuclear magnetic resonance spectrometer and an infrared spectrometer.

The invention relates to the technical field of quenching oil, in particular to high-wettability quenching oil and a preparation method thereof. The high-wettability quenching oil comprises the following substances in parts by weight: 40-60 parts of trimethylolpropane; 8-15 parts of tall oil fatty acid; 0.8 to 1.5 parts of a catalyst; and 45 to 55 parts of xylene. The fatty acid methyl ester synthesized by adopting trimethylolpropane and tall oil fatty acid as raw materials has good fluidity and relatively low viscosity, and is beneficial to improving the heat exchange efficiency between metal and quenching oil, so that the cooling effect is improved. On the basis, the molecular structure of the prepared fatty acid methyl ester comprises a long-chain fatty acid part and a short-chain methanol part. The amphiphilic structure enables the fatty acid methyl ester to show good interfacial activity on a water and oil phase interface, so that the wetting ability of the fatty acid methyl ester to a metal surface is enhanced.

The application discloses a super-long chain glucose amide nonionic surfactant and a synthesis method thereof. The hydrophobic tail chain of the surfactant is derived from plant-based fatty acids such as oleic acid, erucic acid or nervonic acid, and the hydrophilic head group is derived from glucose derivatives such as meglumine and glycolglucamine. With oleic acid, erucic acid and nervonic acid in rapeseed by-product as hydrophobic tail chain raw material, glucose derivatives meglumine and glycolglucamine as hydrophilic head group raw material, methanol, ethanol, ethylene glycol or propylene glycol (single solvent or binary mixed solvent) as solvent, and DMAP or NaF as catalyst, a kind of bio-based surfactant is obtained. The super-long chain glucose amide nonionic surfactant is prepared by selective amination reaction, the hydroxyl group in the glucose amine molecule does not need to be protected complicatedly, the reaction temperature is close to room temperature, the operation is simple, and the purification process only needs a simple industrial crystallization method, which is suitable for industrial production.

This invention discloses a glycosyl carbon quantum dot oil displacement agent for unconventional oil reservoirs, its preparation method, and its application, belonging to the field of oilfield chemical technology. The preparation of the glycosyl carbon quantum dot oil displacement agent for unconventional oil reservoirs of this invention includes: adding a carbon source and a modifier to an alcohol solution, stirring to dissolve, and then carrying out a hydrothermal reaction to obtain the product; wherein the modifier is a ketoxime modifier; this method is simple, low-cost, has controllable particle size, and high yield, making it suitable for industrial application; the obtained carbon quantum dots have a high specific surface area and functional groups such as carboxyl and hydroxyl groups, which can penetrate nanopores and synergistically reduce the oil-water interfacial tension to below 5.0 mN / m; this product has outstanding high-temperature resistance and penetration ability, and can effectively penetrate into the nanopore throat structure of tight reservoirs, significantly improving oil displacement efficiency through interfacial modification, and is particularly suitable for the exploitation of unconventional nano-oil and gas resources.

The invention discloses a preparation method of a high-performance flow modifier. The preparation method comprises the following steps: preparing a modified silicon oxide coated carbon nanotube material; carrying out graft modification on the modified silicon oxide coated carbon nanotube material by taking acrylamide, AMPS and sodium alpha-olefin sulfonate as monomers to obtain a polymer graft modified silicon oxide coated carbon nanotube material; carrying out graft modification on the modified cellulose nanocrystal by taking acrylamide, acrylic acid, nonylphenol ethoxylate and 4-vinyl biphenyl as monomers, so as to obtain a polymer graft modified cellulose nanocrystal; and mixing and grinding the polymer graft modified silicon oxide coated carbon nanotube material and the polymer graft modified cellulose nanocrystals to obtain the high-performance flow modifier. The prepared flow modifier can effectively improve the flowability of the polycyclic aromatic hydrocarbon material at normal temperature and low temperature, the application field of the polycyclic aromatic hydrocarbon material is greatly expanded, and the added value of the product is improved.

The invention discloses a hyperbranched polymer, a demulsifier and a preparation method and application of the hyperbranched polymer and the demulsifier. The preparation method of the hyperbranched polymer comprises the following steps: in a solvent, taking a tricarboxylate compound and a first diamine compound to react to obtain a primary grafted product; reacting the primary grafting product with a first olefine acid methyl ester compound to obtain a first intermediate product; reacting the first intermediate product with a second diamine compound to obtain a secondary grafted product; reacting the secondary grafting product with a second olefine acid methyl ester compound to obtain a second intermediate product; reacting the second intermediate product with a third diamine compound to obtain a third grafted product; and reacting the tertiary grafted product with alkyl glycidyl ether to obtain the hyperbranched polymer. The prepared hyperbranched polymer is used as a crude oil emulsion demulsifier, has excellent interfacial activity, can quickly demulsify at low temperature, and has good thermal stability and acid-base tolerance.

The present invention relates to the technical field of packaging materials, and specifically discloses an epoxy resin packaging material, a preparation method and its application, comprising the following raw materials: epoxy resin, curing agent, continuous adjustment improver and yttrium oxide modified boron nitride modifier; wherein the mass ratio of epoxy resin, curing agent, continuous adjustment improver and yttrium oxide modified boron nitride modifier is (10-14):3:(3-5):(2-3). The epoxy resin packaging material of the present invention adopts epoxy resin and curing agent, and adopts continuous adjustment improver and yttrium oxide modified boron nitride modifier to be mutually reconciled, and the synergistic effect is achieved to enhance the product's resistance to cold and heat shock and insulation, optimize the coordination of the two performances, and improve the product's acid corrosion resistance stability.

The present application discloses a non-flowback acidizing working fluid and its preparation method and construction process, which belongs to the field of oilfield chemical technology. The non-flowback acidizing working fluid includes a pretreatment fluid and a composite acid fluid, and the volume ratio of the pretreatment fluid to the composite acid fluid is 1: (2~10); the composite acid fluid includes an organic acid, hydrochloric acid and a cationic gemini surfactant; in terms of weight percentage, the composite acid fluid includes 15~25% of an organic acid, 1%~3% of hydrochloric acid, 0.2%~1% of a cationic gemini surfactant, and the remainder is water. The pretreatment fluid cleans and protects the casing of the oil well, dissolves the crude oil and organic scale on the surface of the reservoir; the organic acid, hydrochloric acid and the cationic gemini surfactant are compounded to obtain the composite acid fluid, and the organic acid is combined with the hydrochloric acid to improve the retarding performance, and the cationic gemini surfactant is combined, so that it has stronger surface activity and interfacial activity, is easier to form micelles, and has a good production increase effect.

The present application relates to a rock wool reinforced phosphogypsum fireproof door core plate and a preparation method thereof, and belongs to the technical field of fireproof building materials and phosphogypsum resource utilization. The fireproof door core plate takes phosphogypsum as the main body, constructs an interface functional layer through the grafting reaction of chitosan and quaternary ammonium salt, and is further subjected to hydrophobization treatment, to obtain modified phosphogypsum particles with compact structure through spray granulation. A reactive organic small molecule 2-hydroxyethyl methacrylate, which is not applied in this field, is introduced, so that a micro-crosslinking network is formed in the system, thereby enhancing the wet stability and crack resistance of the material. Rock wool fibers are further combined to construct a three-dimensional reinforcing skeleton, and a silicon-aluminum inorganic gel agent, a redispersible latex powder, a flame retardant and a water repellent are added, to realize a multi-scale synergistic reinforcing structure of inorganic-organic-fiber. The fireproof door core plate prepared by the present application significantly improves the moisture absorption, cracking and performance attenuation of the traditional phosphogypsum plate, and is suitable for the manufacture of high-stability fireproof door core plates.

The invention belongs to the technical field of chemical cleaning, and particularly relates to an environment-friendly efficient cleaning agent for a membrane material based on an environment-degradable material, which comprises a stimuli-responsive cleavable surfactant, a biogenic polycarboxylic acid chelating system, an environment-induced degradation accelerator, a modified biopolymer membrane layer protective agent and a permeation enhancement cofactor, the controlled extinguishing of interfacial activity is realized by utilizing the acid-induced fracture characteristic of an acetal bond of a surfactant, and active induced degradation is realized through a microcapsule packaging oxidation catalysis system; while efficient decontamination and membrane protection are realized, the medicament degradation period is remarkably shortened, and the foam impact of waste liquid on a biochemical system is thoroughly eliminated.

The application discloses an oil-based water-alcohol-ester multi-element microemulsion fuel additive and a preparation method and application thereof, and belongs to the technical field of fuel additives. The additive is prepared by compounding fuel oil as a continuous phase, a water-alcohol-ester mixture as a dispersed phase, constructing an interface film by using phospholipid, in-situ reaction of oleic acid and diethyldiethanolamine, and combination of high-pressure atomization and magnetic field synergistic stirring according to a specific ratio. The application has excellent stability, a high content of polar components, can significantly reduce nitrogen oxide, hydrocarbon, carbon monoxide and particulate matter emissions, saves oil, protects the engine, improves power, and is suitable for multiple scenes in multiple versions. The white oil version is suitable for field kitchens of troops, and has economic, environmental protection and special application values.

The invention provides a middle-phase microemulsion oil-displacing agent as well as a preparation method and application thereof. The middle-phase microemulsion oil-displacing agent comprises the following components: a main surfactant, a cosurfactant, an auxiliary agent and water, the main surfactant has a structural formula as shown in a formula I in the specification. In the invention, the main surfactant has excellent interfacial activity and crude oil adaptability and excellent temperature resistance and salt resistance, can form a middle-phase microemulsion with the cosurfactant, the auxiliary agent and water under the condition of low concentration, greatly improves the recovery efficiency, and has important significance for the development of different types of oil reservoirs.

The invention discloses an anti-mullerian hormone quality control product as well as a preparation method and application thereof, and belongs to the technical field of anti-mullerian hormone detection. The anti-mullerian hormone quality control product provided by the invention is composed of an anti-mullerian hormone antigen and a quality control product matrix liquid, wherein the quality control product matrix liquid comprises a buffer solution, bovine serum albumin, a surfactant S9, polyoxyethylene alkyl ether, double-glycoside peptide and a preservative. The quality control product provided by the invention is few in additives, simple in components and low in cost, can reduce the matrix effect to the maximum extent, has good uniformity and stability, effectively prolongs the shelf life of the quality control product, and has a good application prospect.

The invention discloses a demulsifier for oilfield sewage treatment, and relates to the technical field of sewage treatment. The preparation method of the demulsifier comprises the following steps: S1: after monomer A, monomer B and a catalyst are mixed evenly, propylene oxide is added and mixed evenly, and the mixture is reacted for 2-3 hours at 120-130°C, and then aged for 0.5-1.5 hours to obtain a low molecular weight polyether; S2: ethylene oxide is added to the low molecular weight polyether of step S1, mixed evenly, heated to 130-140°C, reacted for 2-3 hours, aged for 1-2 hours, cooled, washed, and obtained a high molecular weight polyether; S3: the high molecular weight polyether, monomer C, initiator and solvent in S2 are mixed evenly, the temperature is increased to 55-80°C, the mixture is reacted for 2-4 hours, cooled, and obtained a demulsifier. The demulsifier prepared by the invention not only has a good demulsification effect, but also has high stability and durability.

The invention provides a high-temperature-resistant clean fracturing fluid and a preparation method thereof, and belongs to the technical field of fracturing fluids. The cleaning agent is prepared from the following raw materials in parts by weight: 3-5 parts of a high-temperature-resistant gemini surfactant, 0.5-1 part of a cosurfactant, 5-7 parts of a cleanup additive, 1-2 parts of nano granules and 70-80 parts of water. The high-temperature-resistant clean fracturing fluid prepared by the invention has better high-temperature resistance, salt resistance and shear resistance, good sand-carrying effect and excellent viscoelasticity, avoids the damage of a large number of inorganic ions to the change of original properties of a stratum, is simple in preparation process and wide in raw material source, and has a wide application prospect in oil and gas field exploitation and yield increase.

The invention discloses a controllable degradation vinasse protein film as well as a preparation method and application thereof, and belongs to the technical field of biodegradable materials. Modified vinasse protein is added into the vinasse protein film, and the modified vinasse protein is prepared by taking vinasse protein as a raw material, modifying the vinasse protein by catalyzing and grafting C12-C18 aliphatic primary amine through transglutaminase, and compounding the modified vinasse protein with a film-forming matrix, a plasticizer, a reinforcing agent and a cross-linking agent. The degradation period of the film can be controlled and adjusted within 7-180 days by adjusting the enzyme dosage and the primary amine grafting proportion; in addition, the prepared vinasse protein film has good mechanical properties, barrier properties and biodegradability, is suitable for the fields of agriculture, packaging and the like, and has the advantages of environmental protection and resource utilization.

The invention relates to the technical field of surfactants, and provides a zwitterionic surfactant as well as a preparation method and application thereof. The surfactant is shown as a formula (I), wherein in the formula (I), R1 is selected from C4-C30 alkyl; r2 is selected from H and C1-C10 alkyl groups; r3 is selected from H, methyl and ethyl; r4 is selected from H and C1-C4 alkyl; m1 and m2 are respectively and independently selected from any integer between 0 and 50, and m1 + m2 = 1-50; the structure of R5 is shown as-(CH2) n1 (CH (OH)) n2 (CH2) n3SO3 (M) n, n1 is any integer selected from 1-4, n2 is selected from 0 or 1, n3 is any integer selected from 1-4, n1 + n2 + n3 is less than or equal to 6, M comprises at least one of alkali metal ions and alkaline earth metal ions, when M is the alkali metal ions, n is 1, and when M is the alkaline earth metal ions, n is 0.5; xi-is an anion, wherein i is the number of charges of the anion. The zwitterionic surfactant provided by the invention has the advantages of being good in temperature resistance and salt tolerance, high in interfacial activity and capable of effectively reducing the water injection pressure of the low-permeability reservoir, can be used in enhanced oil extraction production for reducing pressure and increasing injection of the low-permeability reservoir, and can obviously improve the recovery efficiency of the low-permeability reservoir.

The present invention provides a nano surfactant for oil washing, preparation and application thereof. The preparation method comprises the following steps: uniformly mixing a water-soluble component, an oil-soluble component and a surfactant to obtain a premix; heating the premix to 140-300°C under an atmospheric environment so that the material is in a molten state and a polycondensation reaction occurs between the materials, and after reacting for 10-180 minutes, nanoparticles having a hydrophilic group and a hydrophobic group are obtained. The prepared nano surfactant can have a high oil washing efficiency (more than 50%) at a relatively low concentration (0.005-0.1wt%), is not easily adsorbed by the formation, has a relatively low dynamic adsorption amount (≤5%), can emit a relatively strong fluorescence after being excited by light, and can be used as a fluorescent tracer to monitor the concentration and extraction of the nano surfactant underground. The preparation process is simple, the raw material cost is low, it is non-toxic, and it is easy to realize large-scale production.

The invention discloses a universal sample nucleic acid release solution, a nucleic acid extraction kit and an extraction method. The universal sample nucleic acid release solution comprises guanidine salt, sodium laurate, Tetronic 1307, tetrasodium iminodisuccinate and polyethylene glycol 200. The nucleic acid release solution of the invention is suitable for nucleic acid extraction of different pathogen samples such as viruses, bacteria, fungi, mycoplasmas, parasites, etc., has high nucleic acid yield and good extraction effect, and the nucleic acid extraction method of the invention is efficient, simple and safe.

The application relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifying agent for oilfield sewage treatment and a preparation method thereof. The composite water clarifying agent for oilfield sewage treatment is prepared from the following raw materials: double-modified polyacrylamide, imidazoline quaternary ammonium salt graft copolymer, scale inhibitor, adsorbent, dodecyl dimethyl betaine, coagulant aid and deionized water; the double-modified polyacrylamide is obtained by double modification of 2,3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer on polyacrylamide; and the imidazoline quaternary ammonium salt graft copolymer is a graft copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropane sulfonic acid. The composite water clarifying agent can be used for treating high-salt and high-oil sewage generated in the middle and late stages of oilfield exploitation, has the advantages of strong salt resistance, complete demulsification and good flocculation effect, can efficiently remove oil and suspended solids, ensures that the effluent meets the standards, and meets the complex sewage treatment requirements of oilfields.