1761 results about "POLYOXYETHYLENE ETHER" patented technology

The invention discloses a shale oil carbon dioxide flooding surfactant and a preparation method thereof, and belongs to the technical field of surfactants. The rock oil carbon dioxide flooding surfactant is prepared from the following components in parts by weight: 100 parts of water, 40 to 60 parts of fluorine-containing copolymer, 15 to 25 parts of sodium dodecyl benzene sulfonate, 10 to 20 parts of polyoxyethylene ether surfactant containing siloxy and 5 to 10 parts of nanoparticles. The fluorine-containing copolymer, the sodium dodecyl benzene sulfonate, the siloxy-containing polyoxyethylene ether surfactant and the nanoparticles are compounded, so that on one hand, the surfactant has relatively high salt tolerance and temperature tolerance so as to adapt to the environment of a shale oil reservoir; on the other hand, the surface activity is synergistically improved, the interfacial tension is reduced, the rock surface wettability is changed, and the system stability is enhanced, so that higher recovery efficiency is realized.

The invention discloses a carbon fiber reinforced modified resin material and a preparation method thereof, and belongs to the technical field of high-molecular compound composition.The preparation method comprises the steps that 40-60 parts of acidified carbon fibers, 8-12 parts of silane coupling agent modified graphene oxide, 10-20 parts of polyethylene glycol and 3-8 parts of alkylphenol polyoxyethylene ether are ultrasonically mixed to be uniform with acetone as a solvent, and a mixture I is obtained; mixing 100 parts of epoxy resin and 30-50 parts of a curing agent, heating and stirring until the mixture is melted to obtain a mixture II; the mixture I and the mixture II are placed in a vacuum drying oven to be mixed and stirred, the obtained product is placed at the room temperature and then subjected to heating curing treatment, and the carbon fiber reinforced modified resin material is obtained, so that the interface bonding strength of the composite material is remarkably improved by optimizing the formula, and the composite material has excellent mechanical properties; the composite material has a wide application prospect in the fields of aerospace, automobile manufacturing, electronics and other high-performance composite material requirements.

The invention discloses a functional fracturing fluid directly prepared from flow-back fluid of complex water quality. The fracturing fluid is prepared by directly adding a salt-tolerant polymer and an ion trapping agent into the flow-back fluid. The addition amount of the salt-tolerant polymer accounts for 0.15-0.3% of the total mass of the fracturing fluid, and the addition amount of the ion trapping agent is 100-500ppm. The salt-tolerant polymer is prepared by copolymerization of acrylamide, a salt-tolerant monomer and an allyl quinoline monomer, and the molecular weight of the polymer is 4-15 million. The salt-tolerant monomer is acrylamide polyoxyethylene sodium benzenesulfonate or acrylamide sodium sulfonate. The ion trapping agent is prepared from amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), ethylene glycol bis (2-aminoethyl ether) tetraacetic acid, p-methylphenyl diethanol amine, 2, 3-epoxypropyl trimethyl ammonium chloride, fatty alcohol-polyoxyethylene ether, citric acid and tetrahydrofurfuryl acrylate. The fracturing fluid can be directly prepared from the flow-back fluid, the flow-back fluid does not need to be pretreated, and repeated utilization of the fracturing flow-back fluid is achieved.

The invention discloses a concrete polycarboxylic acid water reducing agent with high slump loss resistance and flocculation resistance and a preparation method of the concrete polycarboxylic acid water reducing agent, and belongs to the technical field of concrete admixtures. The water reducing agent is prepared from the following raw materials in parts by weight: 45 to 55 parts of isopentenyl polyoxyethylene ether, 3 to 8 parts of methacrylic acid phosphate, 8 to 12 parts of hydroxyethyl acrylate, 4 to 7 parts of N-isopropylacrylamide, 10 to 15 parts of auxiliary monomer, 8 to 12 parts of initiator and 0.3 to 0.6 part of chain transfer agent. And the technical problems that the fluidity of the concrete is reduced and the slump retaining effect is poor due to the fact that the temperature of the concrete is increased in the stirring process are solved.

The invention provides an amphiphilic carbon dot, a carbon nanofluid and application of the amphiphilic carbon dot and the carbon nanofluid, and belongs to the technical field of nanomaterial oil displacement, and the amphiphilic carbon dot is prepared by taking alkylphenol polyoxyethylene ether and glucose as raw materials to perform solvothermal reaction; the alkylphenol polyoxyethylene ether comprises octylphenol polyoxyethylene ether and / or nonylphenol polyoxyethylene ether; the mass ratio of the alkylphenol polyoxyethylene ether to the glucose is 1: (0.1-2). According to the invention, alkylphenol polyoxyethylene ether and glucose are taken as raw materials, and simple preparation of the amphiphilic carbon dots with high surface and interface activity is realized. The amphiphilic carbon dots provided by the invention show good surface and interface activity at high temperature and high salinity. According to the carbon nanofluid provided by the invention, the amphiphilic carbon dots and the zwitterionic surfactant are compounded, so that the stability of a carbon nanofluid oil displacement system at high temperature and high salt can be further improved, the crude oil recovery rate is increased, and efficient yield-increasing development of high-temperature and high-salt deep oil reservoirs is realized.

The invention relates to the field of zipper processing, in particular to a processing method of a fluoride-free DWR waterproof zipper, which sequentially adopts four steps of pretreatment, padding treatment, drying treatment and heat treatment to carry out waterproof processing on the zipper, the fluorine-free DWR waterproof zipper prepared by matching paraffin, polyether modified silicone oil, carbodiimide, nano silicon dioxide dispersion liquid, fatty alcohol-polyoxyethylene ether and diethylene glycol monobutyl ether has the following advantages that 1, the fluorine-free DWR waterproof zipper meets the limitation requirements of Europe and America regulations and various standards on fluorine element, 2, the waterproof grade meets the grade 4.5 or above of standards such as AATCC / ISO / GB / T and the like, and the fluorine-free DWR waterproof zipper has a good waterproof effect. 3, the washing resistance can reach more than 20 times of washing and drying tests; 4, the phenomenon of white grasping in the market is avoided; and 5, the anti-siphon performance can reach 10H without climbing.

The invention provides a composite synergistic system for a shale gas old well and an immovable string production increasing process. The composite synergistic system mainly comprises the following substances: 10-12% of a wetting improver; 4%-6% of a scale remover; 2%-3% of a scale inhibition dispersant; 5%-10% of a resistance-reducing discharge aiding agent; 15%-20% of a synergistic accelerant; the wetting improver is a mixture of alkyl polyglucoside, an anionic surfactant sodium dodecyl benzene sulfonate and deionized water, the content of the alkyl polyglucoside in the wetting improver is 5%-10%, and the content of the anionic surfactant sodium dodecyl benzene sulfonate is 15%-18%; the descaling agent is a mixture of sodium alpha-olefin sulfonate and nonylphenol polyoxyethylene ether ammonium sulfate, and the mass ratio of the sodium alpha-olefin sulfonate to the nonylphenol polyoxyethylene ether ammonium sulfate in the descaling agent is (2: 1)-(3: 1). According to the composite synergistic system, through combination and reuse of different materials and different doses, the multifunctional composite synergistic system integrating vibration, permeation and dispersion effects is researched and developed, and therefore immovable tubular column yield increase construction of a shale gas old well is achieved.

The invention belongs to the technical field of oilfield auxiliaries, and particularly relates to an oil-soluble demulsifier for a heavy oil field and a preparation method of the oil-soluble demulsifier. The oil-soluble demulsifier for the heavy oil field, provided by the invention, is prepared from a block polymer emulsion, nonylphenol polyoxyethylene ether, modified nanoparticles and a cross-linking agent. According to the invention, methoxystyrene, dodecyl vinyl ether, N, N-dimethylaminopropyl acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are adopted to prepare a quaternary block comb-shaped polymer, the quaternary block comb-shaped polymer and nonylphenol polyoxyethylene ether are subjected to molecular-level cross-linking through a cross-linking agent, nano modified particles are added, and the quaternary block comb-shaped polymer is prepared. The prepared demulsifier can be rapidly adsorbed on an oil-water interface and respectively adsorb an oil phase and a water phase, so that the tension of the oil-water interface is reduced, rapid separation of the oil phase and the water phase is realized, and the demulsification performance is improved.

The invention discloses a high-salt-resistance composite cleanup additive and a preparation method thereof, and relates to the technical field of oilfield chemical additives. The invention discloses a high-salt-resistance composite discharge aiding agent. The cleaning agent is prepared from the following raw materials in parts by weight: 10 to 20 parts of modified sodium dodecyl benzene sulfonate, 5 to 10 parts of cocamidopropyl betaine, 8 to 15 parts of polyoxyethylene ether, 2 to 5 parts of nano silicon dioxide, 3 to 8 parts of sodium hexametaphosphate, 1 to 3 parts of low-molecular-weight polyacrylamide, 4 to 10 parts of modified polyacrylic acid-acrylamide copolymer, 15 to 30 parts of ethanol and 5 to 12 parts of ethylene glycol butyl ether. 2-6 parts of an imidazoline derivative, 3-7 parts of amino trimethylene phosphonic acid, 4-9 parts of sodium silicate and 2-5 parts of citric acid-sodium citrate. Aiming at development requirements of high-salt oil reservoirs, sodium dodecyl benzene sulfonate and the polyacrylic acid-acrylamide copolymer are modified, and raw materials are scientifically compounded, so that the cleanup additive shows high stability in a high-salt environment, can reduce interfacial tension and effectively regulate and control rock surface wettability, has foam stability and biodegradability, and can be widely applied to high-salt oil reservoirs. The method is suitable for high-salt complex oil reservoir operation scenes.

The invention belongs to the technical field of dispersants, and particularly relates to a high-performance water-based polymeric dispersant for ink and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a styrene-maleic anhydride copolymer; (2) mixing the styrene-maleic anhydride copolymer with dimethylformamide, heating to 100-105 DEG C, dissolving methoxy polyoxyethylene ether and p-toluenesulfonic acid in dimethylformamide, then dropwise adding into the reaction container, and reacting for 6-8 hours at the temperature of 100-105 DEG C to obtain a polyether grafted styrene-maleic anhydride copolymer; and (3) adding polyether amine into the polyether-grafted styrene-maleic anhydride copolymer, heating to 150-160 DEG C, carrying out reflux reaction for 4-6 hours under the protection of nitrogen, cooling, and carrying out reduced-pressure rotary evaporation to remove dimethylformamide, thereby obtaining the high-performance water-based polymeric dispersant for ink. The polymer dispersant has narrow particle size distribution after dispersion, and has good centrifugal stability, dilution stability and dispersion effect.

The invention discloses a high-weather-resistance photocuring coating with radar infrared stealth and intelligent anti-counterfeiting functions and preparation, and relates to the technical field of special functional materials. According to the coating, stealth, anti-counterfeiting and extreme environment tolerance are realized through multi-component collaborative design: matrix resin is prepared by compounding organic fluorine modified epoxy acrylate and polyurethane acrylate, and trifluoro propyl trimethoxy silane and polyoxyethylene ether block copolymer are introduced, so that weather resistance is improved; the photo-initiation system contains a free radical / cation composite initiator and a low-temperature initiator, and supports wide-temperature-range curing. The functional filler comprises a core-shell complex and carbon nanotube / graphene composite powder, and uniform dispersion of the filler is realized through a gradient grinding process. The method is suitable for military equipment camouflage, aerospace protection and criminal investigation anti-counterfeiting, 800-1400 [mu] m thermal radiation matching, radar wave absorption and mobile phone camera readable encryption information are achieved, and an innovative solution is provided for high-end equipment protection and information safety.

The invention discloses an anti-collapse photoresist flushing fluid and a photoetching method for forming a photoresist pattern, the anti-collapse photoresist flushing fluid comprises a nonionic surfactant, an anionic surfactant, an organic alkali and a solvent, the nonionic surfactant is # imgabs0 #; and the anionic surfactant is isooctyl alcohol ether phosphate ester or isooctyl alcohol polyoxyethylene ether phosphate ester. According to the invention, the alkynediol nonionic surfactant has the effect of double tails with interconnected bipolar groups and has a synergistic effect with the anionic surfactant, so that the surface tension of the flushing fluid is reduced while the activity of the surfactant is improved, thereby reducing the internal stress of photoresist lines and preventing collapse; bis-OH in the alkynediol and incompletely developed free carboxylic acid in the photoresist are subjected to esterification reaction to generate a hydrophobic material surface layer, so that the line edge roughness and the image surface roughness are improved; organic alkali and functional groups on the surface of the photoresist are subjected to cross-linking reaction, so that the mechanical property is improved, and collapse is further prevented.

The invention discloses a super-retarding type polycarboxylic acid water reducing agent and a preparation method and application thereof, and belongs to the field of concrete water reducing agents. The preparation method comprises the following steps: taking acrylic acid AA, isobutenol polyoxyethylene ether HPEG and hydroxyethyl acrylate HEA as monomers, taking mercaptopropionic acid MPA as a chain transfer agent, taking hydrogen peroxide H2O2 and L-ascorbic acid Vc, and mixing in proportion to serve as an initiator; preparing a first and second monomer mixed solution; adding bottom water into the reaction kettle, and carrying out stepwise polymerization reaction; and cooling the reaction liquid, adjusting the pH value, filtering, and discharging to obtain the product. According to the invention, an ester functional monomer hydroxyethyl acrylate HEA is introduced, and a step-by-step polymerization technology is adopted to control the dispersion process of water reducing agent molecules on cement particles, so that the water reducing agent molecules continuously disperse the cement particles within a certain period of time; the problem that the slump loss is too fast due to long-time and long-distance transportation of concrete or transportation in high-temperature weather is effectively relieved.

The application discloses a thickened oil viscosity reducer for a main viscosity contribution component of colloid and a preparation method thereof. The thickened oil viscosity reducer comprises the following components in percentage by weight: diethylene glycol methyl ether 25-35%, propylene glycol formate 15-25%, dispersant 5-8%, chelating agent 2-4%, anti-coking agent 0.5-1%, anti-swelling agent 1-2% and corrosion inhibitor 1-2%; and the balance is water. The application is a polar + non-aromatic hydrocarbon solvent system; completely avoids high-risk substances such as nonylphenol polyoxyethylene ether, petroleum sulfonate sodium and organic chlorine; is designed in pertinence and can effectively inhibit metal-induced asphaltene bridging; can withstand working conditions from normal temperature to 250 DEG C and up to 300 DEG C; thermal stability is significantly enhanced, and residual carbon after aging is lower than 8%; viscosity reduction efficiency is higher; the system is more stable, flexible in compounding and suitable for field construction.

The invention discloses a preparation process and application of a modified anti-segregation admixture for machine-made sand, and relates to the technical field of polymer modified materials. Modified polyoxyethylene ether and vinyltrimethoxysilane are adopted to construct a steric hindrance effect, styrene-acrylate emulsion is introduced to form an interpenetrating network structure, and nano silicon dioxide and bentonite are cooperated to construct a multi-scale enhancement system. Silane coupling agent hydrolysis and nano grafting reaction are realized through gradient heating, and the particle size distribution D90 of the emulsion is less than or equal to 5 microns by combining an ultrasonic-mechanical synergistic emulsification process. A three-dimensional network is formed by the composite thickening agent and anhydrous sodium sulfate, and after in-situ curing at 25 DEG C with RH greater than or equal to 80%, 0.1-0.5% of the additive is added, so that the slump retention value of the machine-made sand concrete is greater than 315mm (1h), the pressure bleeding rate is less than or equal to 9.7%, the 28d compressive strength is improved by 24.5-72.6 MPa, and the segregation resistance coefficient is reduced to 0.08-0.11. The technology breaks through the limitation of insufficient adaptability of traditional admixtures to machine-made sand, and is particularly suitable for long-distance pumping construction of high-stone-powder-content machine-made sand concrete.

The present invention relates to a high antistatic crude oil type polyester FDY spinning finish and its preparation method. The composition of sodium lauryl polyoxyethylene ether sulfate and potassium lauryl phosphate is used as the main antistatic agent, and an antistatic smoothing agent with sulfonated chitosan and PEG800 as key components is adopted. The antistatic smoothing agent and the main antistatic agent act synergistically to enhance the overall antistatic property of the finish. Preparation method: Each material is pre-equilibrated at 40°C to 50°C before feeding; then, the antistatic smoothing agent, penetrant, bundling agent, main antistatic agent, and anti-coking agent are added in sequence while stirring; finally, the temperature of the reaction kettle is controlled at 40°C to 50°C, the stirring speed is 500 to 700 r / min, and the reaction is carried out for 0.5 to 1.5 h. The present invention is a crude oil type polyester FDY finish with excellent antistatic property, and can carry out polyester FDY spinning in the way of directly applying oil with crude oil at a super high spinning speed of 4000 m / min.

The invention discloses a novel composite fog dispersal catalyst formula and a preparation method thereof, and belongs to the field of manual intervention weather catalyst manufacturing. The catalyst comprises a hygroscopic agent, which can be calcium chloride, magnesium chloride, sodium chloride, urea, calcium hydroxide or magnesium hydroxide; the carrier agent can be oxidized starch, bentonite, diatomite, a molecular sieve or cellulose; and the dispersing agent can be silicon dioxide, fatty alcohol-polyoxyethylene ether, polyethylene glycol, fatty glyceride or titanium dioxide. The prepared catalyst has good hygroscopicity and dispersibility, and when the catalyst is sown in dense fog, the dense fog can be rapidly dissipated. The raw materials have high water absorption characteristic and dispersity and can accelerate dissipation of warm dense fog and improve visibility, most of the carrier materials are non-toxic and harmless environment-friendly materials, the content of chloride ions and alkali metal ions in the composite catalyst is effectively reduced by controlling the proportion, the corrosion effect caused by various ions is reduced, and the requirement for environmental protection is met.

A solid gel foam fire extinguishing agent includes a material A and a material B; the material A includes the following components in mass percentage: 18% to 25% of an inorganic silicate, 0.25% of sodium carboxymethyl cellulose, 0.25% of sodium alginate, 0.1% to 0.5% of xanthan gum, 0.5% to 1% of polyvinyl alcohol, 0.5% to 1.5% of sodium lauryl sulfate, 0.01% to 0.05% of dodecanol, 0.005% to 0.01% of disodium ethylenediaminetetraacetate, and water as a balance; and the material B includes the following components in mass percentage: 25% of sodium dihydrogen phosphate, 25% of acetic acid, 1% to 1.5% of fatty alcohol polyoxyethylene ether, 0.1% to 0.5% of 3% aqueous film-forming foam, 0.01% to 0.05% of the dodecanol, and water as a balance. The fire extinguishing agent exhibits advantages including low density, low oil wettability, high resistance, high adhesiveness, and foam collapse-resistant properties in fire resistance.

The invention relates to a high-performance concrete admixture composition for a wind power tower drum and a preparation method of the high-performance concrete admixture composition, and relates to the field of concrete admixtures. The water reducing agent is prepared from the following components in parts by weight: 35 to 45 parts of a shrinkage reducing type polycarboxylic acid water reducing agent, 8 to 12 parts of methoxy polyethylene glycol acrylate modified nano silicon dioxide, 1.5 to 2.5 parts of sodium dodecyl polyoxyethylene ether sulfonate, 0.8 to 1.5 parts of coconut oil diethanolamide, 0.3 to 0.8 part of sodium polyacrylate, 0.2 to 0.6 part of ammonium tripolyphosphate, 0.05 to 0.15 part of a polyether defoaming agent and 40 to 50 parts of water. According to the invention, the hydration process of the concrete is regulated and controlled through the synergistic interaction among various additives, the pore structure in the concrete is optimized, and an interface transition region is strengthened, so that the systematic improvement of the microstructure of the concrete is realized, and the strength and durability of the concrete are remarkably improved.

The invention discloses a preparation method of isooctanol polyoxyethylene ether, and belongs to the technical field of surfactant preparation, and the method comprises the following steps: mixing isooctanol and an oxidation catalyst, introducing nitrogen, heating, and removing low-boiling-point substances and water; after the low-boiling-point substances and the water are removed, continuing heating, adding ethylene oxide, and vacuumizing for secondary dehydration; after the secondary dehydration is completed, continuously heating, continuously introducing ethylene oxide again, keeping the pressure constant, and calculating the consumption of ethylene oxide; when the addition amount of ethylene oxide reaches a theoretical value, stopping feeding, cooling, aging until the pressure is constant, removing ethylene oxide gas in vacuum, filling nitrogen and discharging to obtain a reaction material; and preheating the reaction material, and then carrying out separation treatment to obtain the isooctyl alcohol polyoxyethylene ether. The prepared reaction product can be directly filtered and collected, byproducts in the product are few, the operation is simple, and the difficulty of later separation and purification is reduced.

The invention relates to a gemini surfactant for thickened oil recovery and a preparation method thereof, and belongs to the technical field of thickened oil recovery. The preparation method of the gemini surfactant for thickened oil recovery comprises the following steps: dissolving ethylene glycol dihydric alcohol and paratoluensulfonyl chloride in a tetrahydrofuran solvent, and carrying out substitution reaction under an alkaline condition to obtain an intermediate I; adding nonyl phenol and the intermediate I into a mixed solvent of tetrahydrofuran and N, N-dimethylformamide, and carrying out etherification reaction under an alkaline condition to obtain a gemini precursor II; and mixing an alkylphenol polyoxyethylene ether surfactant, the gemini precursor II and a formaldehyde aqueous solution, and carrying out a phenolic aldehyde condensation polymerization reaction under an acidic condition to obtain the gemini surfactant. The gemini surfactant prepared by the preparation method has good temperature resistance and salt tolerance, the preparation method is simple, the synthesis cost is low, and the gemini surfactant has good economical efficiency and is beneficial to realizing large-scale industrial production.

According to the all-organic nonlinear insulating material based on the electron-donating group and the preparation method, polyolefin is used as a matrix of the material, and an organic small molecule filler containing the electron-donating group is introduced to form a uniformly dispersed composite structure, so that the nonlinear conductivity of the material is remarkably improved. The small organic molecules can be ethylene glycol diphenyl ether, nonylphenol polyoxyethylene ether, allyloxy polyoxyethylene ether or octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, and the mass fraction of the filler is 0.1-3 wt%. The preparation method comprises the following steps: melting the polyolefin matrix at 110-120 DEG C, adding the small organic molecule filler, and blending for 10-30 minutes at the rotating speed of 50-70 r / min. The material has excellent electric field homogenization capability in a high electric field, avoids the problem of inorganic filler agglomeration, has relatively low filler content and excellent processability, can be widely applied to the field of high-voltage electrical equipment such as transformers, switch equipment and mutual inductors, and effectively improves the insulating property and prolongs the service life of the equipment.

The present invention provides an antifoaming agent comprising a reaction product of (a) one or more polyhydric alcohol(s); (b) one or more polyalkylene oxide(s); and (c) at least one fatty acid(s). The present invention also provides a process for preparing the antifoaming agent and compositions in coatings. The antifoaming agent of the present invention is a glycerin polyoxyethylene ether polyoxypropylene ether stearic acid ester.

The invention belongs to the technical field of polyoxyethylene ether production, and particularly relates to a pyrrolidine compound polyoxyethylene ether composition and a preparation method thereof.The reaction speed is further increased and N-hydroxyethyl pyrrolidine is prevented from being oxidized and discolored by adopting a negative-pressure feeding mode in a reactor, so that the yield of N-hydroxyethyl pyrrolidine is increased, and the production cost is reduced. The pyrrolidine polyoxyethylene ether composition is prepared by mixing pyrrolidine polyoxyethylene ether with different polymerization numbers, pyrrolidine polyoxyethylene ether sodium sulfate and pyrrolidine polyoxyethylene ether sodium carboxylate according to a certain mass ratio, and the proportion of pyrrolidine polyoxyethylene ether with different lengths can be adjusted in the composition. The balance of hydrophilicity and hydrophobicity is changed, so that excellent hydrophobic-hydrophilic, dispersion and wettability properties are realized.

The invention discloses a neutral organic chelating cleaning agent for a boiler, and belongs to the field of chemical cleaning of boiler superheaters of thermal power plants. The cleaning agent is prepared from the following components in percentage by weight: 0.5%-5% of ethylenediamine tetraacetic acid ammonium, 0.1%-4% of acetic acid or ammonium acetate, 0.1%-3% of glycollic acid ammonium or glycollic acid, 0.1%-5% of a pH regulator, 0.1%-1% of a cosolvent, 0.2%-0.8% of a corrosion inhibitor SH369, 0.1%-0.6% of a reducing agent, 0.0%-0.3% of a defoaming agent, 0.0%-0.2% of a surfactant and 84%-93% of water, wherein the pH value of the cleaning agent is 6-8; the cosolvent is tartaric acid and / or hydroxybutyl diacid, the surfactant is nonylphenol polyoxyethylene ether, and the reducing agent is hydrazine. The cleaning agent disclosed by the invention has good dissolving capacity on oxide skin, does not generate precipitates to cause pipe blockage, is a neutral solution, is very small in corrosivity, does not generate intergranular corrosion, is beneficial to protecting various pipes of superheaters and reheaters, and is a safe and efficient superheater cleaning agent.

The invention relates to the technical field of ore flotation, and discloses a preparation process of a foaming agent. The foaming agent is obtained by mixing fluorine-containing pyridine modified carboxyl betaine, sulfonic group modified polyoxyethylene ether and methyl isobutyl carbinol. Fluorine atoms can enhance the stability of the foaming agent and improve the flotation effect; sulfur atoms and metal ions form a stable chelate, and mineral separation and purification are achieved; pyridyl can generate electrostatic attraction with the surface of the mineral to form a hydrophobic membrane, so that the adhesive force of bubbles and the mineral is improved, and the flotation effect is enhanced; polar groups in the carboxyl betaine are adsorbed on the surfaces of the minerals, and non-polar groups face outwards, so that the surfaces of the minerals are hydrophobic, and a flotation effect is achieved; sulfonic groups can be adsorbed on the surfaces of minerals, so that the original hydrophilic surfaces of the minerals are changed into hydrophobic surfaces, and the floatability of the minerals is improved; the polyoxyethylene ether has good dispersing performance, so that the foaming agent is more uniformly distributed in ore pulp, and minerals can be better captured by bubbles and float upwards.

The invention discloses a waterborne polyurethane-urea dispersion with high brushing property as well as a preparation method and application of the waterborne polyurethane-urea dispersion. According to the waterborne polyurethane-urea dispersion, more hydrophilic ion groups are enriched to the surfaces of latex particles by controlling reaction sites of an amine compound with hydrophilicity or hydrophilic potential and an isocyanate group, and fatty alcohol-polyoxyethylene ether with a specific structure is matched. The waterborne polyurethane-urea dispersion prepared by the preparation method disclosed by the invention is excellent in brushing performance, and can be applied to the field of adhesives, and other properties are slightly influenced.

The invention provides a composite surfactant for oil displacement of a hypersalinity oil reservoir and a preparation method of the composite surfactant, and relates to the technical field of petrochemical engineering. The composite surfactant is prepared from the following components in percentage by weight: 0.1 to 0.3 percent of anionic-nonionic surfactant, 0.01 to 0.03 percent of cationic surfactant and the balance of formation water, wherein the anionic-nonionic surfactant is prepared by the following steps: reacting a hydroxyl-containing compound with ethylene oxide to obtain polyoxyethylene ether, then carrying out esterification modification by using aconitic acid modified rosin, then sulfonating by using a sulfonating agent, and finally neutralizing. The composite surfactant shows relatively low interfacial tension under the condition of hypersalinity (50000-200000 mg / L), is high in stability, and can be used for improving the recovery efficiency of hypersalinity oil reservoirs.

The invention relates to the technical field of paint removers, and particularly discloses a paint removal composition, a paint stain cleaning agent and application of the paint stain cleaning agent. The paint stain cleaning agent provided by the invention is prepared from the following components in parts by weight: 30 to 40 parts of EDTA-2Na (Ethylene Diamine Tetraacetic Acid), 200 to 300 parts of caustic soda flakes, 140 to 170 parts of sodium alcohol ether sulphate, 160 to 180 parts of sodium xylene sulfonate, 400 to 450 parts of monoethanolamine, 1100 to 1300 parts of diethylene glycol monobutyl ether, 250 to 300 parts of limonene, 40 to 100 parts of saponin extract and 3700 to 3900 parts of water, the saponin extract is selected from one or more of soapnut saponin, fenugreek saponin and aescin; the invention further provides a paint stain cleaning agent prepared from the paint removal composition and application of the paint stain cleaning agent to cleaning of protective clothing. The paint stain cleaning agent provided by the invention can quickly permeate into paint and the contact surface of the paint and protective clothing, so that the paint on the surface of the protective clothing is dissolved and effectively stripped.

The invention provides a powerful heavy oil stain cleaning agent and a preparation method thereof, and belongs to the technical field of cleaning agents. The cleaning agent is prepared from the following components in percentage by mass: 70 to 90 percent of water, 0.2 to 1.0 percent of tetrasodium glutamate diacetate, 0.2 to 1.0 percent of coconut alkyl quaternary amine ethoxylate, 1.0 to 3.0 percent of C9-11 fatty alcohol-polyoxyethylene ether, 1.0 to 5.0 percent of fatty ether nonionic surfactant, 1.0 to 8.0 percent of polyol solvent, 1.0 to 5.0 percent of monoethanolamine, 0.5 to 2.0 percent of sodium hydroxide and 0.1 to 0.3 percent of essence. The powerful heavy oil stain cleaning agent is good in cleaning effect, small in damage to cleaned objects and good in environmental protection performance.