1056 results about "Propylsulfonic acid" patented technology

The invention relates to a battery monomer, a battery device and a power utilization device, the battery monomer comprises an electrode assembly and an electrolyte, and the electrode assembly comprises a positive pole piece and a negative pole piece; the positive pole piece comprises a positive pole current collecting part and a positive pole film layer; the positive pole film layer comprises lithium-containing phosphate with an olivine structure; the negative pole piece comprises a negative pole current collecting part and a negative pole film layer, and the negative pole film layer comprises a carbon-based material; the electrolyte comprises a carboxylic ester solvent, a first additive and fluorine-containing lithium sulfimide, and the mass content of the carboxylic ester solvent is 8%-60%; the total mass content of the first additive is 2.5%-10%, the first additive comprises 1, 3-propane sultone with the mass content larger than or equal to 0, an ethylene carbonate derivative with the mass content larger than or equal to 0 and vinylene carbonate with the mass content larger than 0, and the ethylene carbonate derivative comprises a compound shown in the formula A; the mass content of the fluorine-containing lithium sulfimide is 4%-8%. According to the invention, the rapid charging performance and the cycle performance of the battery monomer can be improved. # imgabs0 # formula A

The invention relates to a battery monomer, a battery device and a power utilization device, the battery monomer comprises an electrode assembly and an electrolyte, and the electrode assembly comprises a positive pole piece and a negative pole piece; the positive pole piece comprises lithium-containing phosphate with an olivine structure; the negative pole piece comprises graphite particles; the electrolyte comprises a carboxylic ester solvent and a first additive, the thickness of the single-side negative electrode film layer is 50 microns to 75 microns, and the volume average particle size of the graphite particles is 8.5 microns to 13.5 microns; based on the mass of the electrolyte, the mass content of the carboxylic ester solvent is 8%-60%, the total mass content of the first additive is 3%-10%, the first additive comprises 1, 3-propane sultone with the mass content larger than or equal to 0, an ethylene carbonate derivative with the mass content larger than or equal to 0 and vinylene carbonate with the mass content larger than or equal to 3%, and the ethylene carbonate derivative comprises a compound shown in the formula A. According to the invention, the rapid charging performance and the cycle performance of the battery monomer under high energy density can be improved. # imgabs0 # formula A

The invention discloses a wear-resistant and high-temperature-resistant synchronous belt and a preparation method thereof. The wear-resistant and high-temperature-resistant synchronous belt comprises a synchronous belt framework and a synchronous belt rubber sheet, the synchronous belt rubber sheet is prepared from the following raw materials: a fluorosilicone thermoplastic polyurethane elastomer containing a benzene ring structure, an amino-containing hyperbranched liquid crystal polymer, methyl vinyl phenyl silicone rubber, epoxidized natural rubber, molybdenum sulfide nanosheets, reinforced fibers, bis (1-vinyl imidazole-2-) ketone, 2-acrylamido-2-methylpropanesulfonic acid, 4, 4 '-difluoro-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1 The high-temperature-resistant rubber is prepared from 2, 6-hydroxy-2-cyanobenzothiazole, bis (3-aminophenyl) 3, 5-bis (trifluoromethyl) phenylphosphine oxide, a catalyst, a coupling agent, a vulcanizing agent, an anti-aging agent, a scorch retarder and a lubricating agent. The synchronous belt is good in mechanical property, sufficient in high-temperature resistance and cold resistance, good in wear resistance and excellent in aging resistance and flame retardance.

The invention discloses a self-crosslinking temperature-resistant salt-resistant emulsion type fracturing fluid thickening agent and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The raw materials adopted by the invention comprise 30 to 50 parts of an oily solvent, 15 to 25 parts of deionized water, 10 to 20 parts of acrylamide, 5 to 10 parts of acrylic acid, 2 to 4 parts of 2-acrylamido-2-methylpropanesulfonic acid, 0.05 to 0.2 part of a crosslinking monomer, 0.5 to 1 part of a quaternary ammonium salt type hydrophobic association monomer, 4 to 8 parts of an emulsifier and 1 to 2 parts of a phase inversion agent. The self-crosslinking emulsion is formed through water phase-oil phase mixing, high-speed emulsification, low-temperature initiation polymerization and phase inversion treatment. Based on physical-chemical double-crosslinking temperature control cooperation, a salt-resistant-hydrophobic double-shielding mechanism and an integrated design without an exogenous crosslinking agent, the contradiction between the temperature-resistant and salt-resistant performance of a traditional thickening agent and the process complexity is broken through, and a technical support is provided for efficient development of high-temperature and high-salt oil and gas reservoirs.

The invention relates to a preparation method and application of an inner-rigid outer-soft core-shell structure silicon dioxide blocking agent for marine drilling fluid, and belongs to the field of deepwater oil and gas drilling. N-vinyl-2-pyrrolidone, dimethyl diallyl ammonium chloride, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are polymerized and grafted on the surface of nano silicon dioxide to form the silicon dioxide blocking agent with a core-shell structure and a rigid inside and a soft outside; by means of rigid plugging of a nano material and deformation filling flexible plugging of a high-molecular polymer, shale micro-nano pores are efficiently plugged with rigid inside and flexible outside, so that the stability of a well wall is maintained, meanwhile, secondary generation of hydrates is effectively inhibited, and the safety and efficiency of deepwater drilling are improved; the plugging agent provided by the invention reduces the demand on a large number of thermodynamic inhibitors, not only saves the cost, but also has the characteristic of environmental protection.

The present invention uses commercially available 3-aminopropylsilane coupling agent, diallylamino polyether acrylate, and an alkylating agent, or γ-propanesultone, or γ-butyrolactone as raw materials, and through an aza-Michael addition reaction and a quaternization reaction, a multifunctional silane coupling agent containing one or more quaternary ammonium cations, or sulfobetaine, or carboxybetaine in its molecular structure is prepared, which is used for the surface modification of bioactive glass, and the bioactivity, antibacterial and antifungal properties, and hydrophilicity enhancement effects after the surface modification of bioactive glass are obtained.

The invention discloses segmented copolymer grafted graphene oxide and a preparation method and application thereof, and relates to the technical field of cement-based material preparation.The method comprises the following steps that graphene oxide is dispersed in a solvent, an RAFT reagent is added, and RAFT reagent modified graphene oxide is prepared; adding a polyether copolymer to prepare copolymer grafted graphene oxide; and adding poly (propanesulfonic acid) to prepare the segmented copolymer grafted graphene oxide. The graphene oxide is chemically modified, the block copolymer is grafted through RAFT polymerization, the polyether-polyacrylic acid block copolymer is synthesized, the polyether-polyacrylic acid block copolymer has a good promotion effect in the cement hydration process, the workability of a cement-based material can be improved, the mechanical property of the cement-based material can be enhanced, and good economic benefits can be obtained. The invention solves the problem that the performance of the cement-based material improved by physical modification and chemical modification of graphene oxide in the prior art is not ideal.

The invention relates to the technical field of plugging agents, and discloses a viscoelastic polymer type self-assembly plugging agent and a preparation method thereof. The preparation method comprises the following steps: adding acrylamide, butyl acrylate, 2-acrylamide-2-methylpropanesulfonic acid, quaternized cyclodextrin, gamma-glycidyl ether oxypropyl trimethoxy silane modified bentonite, Schiff base styrene, a sodium dodecyl benzene sulfonate emulsifier and octadecyl dimethyl allyl ammonium chloride into a reaction kettle; and adding an azodiisobutyronitrile initiator into the deionized water, uniformly mixing, and reacting for 4-5 hours at 50-65 DEG C to obtain the viscoelastic polymer type self-assembled plugging agent after the reaction is finished. The plugging agent disclosed by the invention has a relatively good plugging effect, and effectively solves the problem that the gel strength is weakened or the gelling is not thorough due to the formation shearing effect in a continuous gel migration process.

The invention relates to a preparation method of a high-hardness and high-sulfate-radical water quality scale inhibitor, and belongs to the technical field of water treatment.The preparation method comprises the steps that sodium carboxymethyl cellulose-sulfur quantum dots are prepared by using carboxymethyl cellulose as a stabilizer and then subjected to a copolymerization reaction with 2-acrylamido-2-methylpropanesulfonic acid and itaconic acid, and the high-hardness and high-sulfate-radical water quality scale inhibitor is obtained. The preparation method comprises the following steps: carrying out a reaction on sodium carboxymethyl cellulose and sulfur quantum dots to obtain modified sodium carboxymethyl cellulose-sulfur quantum dots, and carrying out a reaction on polysuccinimide, 4-amino phthalic acid and 2-aminoethanesulfonic acid to obtain a polyaspartic acid derivative; the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative are mixed to serve as the scale inhibitor, the scale inhibition rate of the scale inhibitor is remarkably increased through the synergistic effect of the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative, and meanwhile, due to the fact that a large number of new hydrogen bonds are generated between the modified sodium carboxymethyl cellulose-sulfur quantum dots and the polyaspartic acid derivative, the scale inhibition rate of the scale inhibitor is increased. The stability of a polymer structure is improved, so that the temperature resistance of the scale inhibitor is improved. The scale inhibitor is green and environment-friendly, and has excellent scale inhibition efficiency on high-hardness and high-sulfate-radical water.

The invention relates to the technical field of drilling compositions, in particular to a self-suspending proppant for low-water fracturing. The invention provides a self-suspending proppant for less-water fracturing. The self-suspending proppant comprises a modified proppant and a quadripolymer adsorbed on the surface of the modified proppant, the modified proppant is obtained by carrying out surface modification on a proppant through a modifier, and the modifier is a silane coupling agent and / or a nonionic surfactant; comonomers of the quadripolymer are acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, 2-methacryloyloxyethyl trimethyl ammonium chloride and acrylic acid respectively. The four comonomers are adopted to form a quadripolymer, so that the salt resistance of the self-suspending proppant can be greatly improved, and the self-suspending proppant can still keep better suspending performance in a solution with higher mineralization degree and has better low-temperature gel breaking performance.

The invention provides application of poly-2-acrylamide-2-methylpropanesulfonic acid in removal of residual lithium on the surface of a high-nickel NCM ternary material, and relates to the technical field of surface treatment of the high-nickel NCM ternary material. The method aims at solving the problem that an existing method for removing lithium carbonate on the surface of an NCM material through high-temperature calcination or high-concentration ethyl alcohol soaking and cleaning has adverse effects on the structure and performance of the high-nickel NCM ternary material. According to the invention, the cleaning agent using poly-2-acrylamide-2-methylpropanesulfonic acid as a main component is provided for cleaning the residual lithium of the high-nickel NCM ternary material, and verification proves that the high-nickel NCM ternary material can be effectively prevented from being damaged by existing high-temperature calcination and high-concentration ethanol soaking and cleaning treatment, and meanwhile, the electrochemical performance of the high-nickel NCM ternary material is remarkably improved.

The invention belongs to the technical field of drilling fluid, and particularly relates to a free radical polymerization water-based drilling fluid composition and a preparation method thereof. The invention relates to a core-shell composite particle-containing water reducer which comprises deionized water, salts (NaCl / KCl), alkalis (Na2CO3 and NaOH), barium sulfate and core-shell composite particles X. The particle is composed of a silicon dioxide core and a polymer shell layer, and the shell layer is formed by free radical copolymerization of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and acrylic acid and is covalently connected with the core through silanization treatment. Under the conditions of high salinity, strong alkali and high solid phase weighting, the drilling fluid simultaneously realizes the following effects: (1) high-density bearing and low-viscosity pumpability are realized; (2) compact plugging and water loss reduction and low formation damage flowback can be realized; and (3) stable rheology rock carrying, lubrication and friction resistance reduction. The problem that three aspects of performance are difficult to consider in the prior art is solved, and the drilling fluid is suitable for drilling of deep wells, ultra-deep wells and complex stratums and has remarkable industrial application value.

The invention provides an external-soft and internal-rigid plugging agent, a preparation method and a water-based drilling fluid, the preparation method of the external-soft and internal-rigid plugging agent comprises the following steps: (1) reacting silicon dioxide with a vinyl-containing silane coupling agent in an ethanol water solution to obtain modified silicon dioxide; (2) mixing the modified silicon dioxide, acrylamide, 2-acrylamido-2-sodium methylpropanesulfonate, sodium p-styrenesulfonate, N, N-methylene bisacrylamide and water, introducing nitrogen to remove oxygen under stirring and heating conditions, and then adding an initiator to react; and (3) filtering, washing and drying the product obtained in the step (2) to obtain the plugging agent with soft outside and rigid inside. The plugging agent can effectively combine the advantages of high strength of a rigid plugging agent and high adaptive capacity of a flexible plugging agent, can adapt to the sizes and shapes of micro-cracks and cracks in a stratum, and effectively plugs pores and cracks in the surface of a well wall.

The invention relates to the technical field of oil and gas field exploitation, and discloses a drag reducer for a multifunctional fracturing fluid and a preparation method thereof.The preparation method of the drag reducer for the multifunctional fracturing fluid comprises the steps that acrylic acid, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and modified itaconic acid are added into deionized water, stirring and mixing are conducted, and the drag reducer for the multifunctional fracturing fluid is obtained. Nitrogen is introduced for 30-40 min to remove oxygen, then azobis (isobutylamidine) hydrochloride is added, the mixture is stirred to react for 48-72 h at the temperature of 45-50 DEG C, and a polymer solution is obtained; and directly and uniformly mixing the polymer solution, the compatilizer and the modified nano silicon dioxide, and reacting in a magnetic stirrer at 60-70 DEG C for 1.5-2 hours to obtain the drag reducer for the multifunctional fracturing fluid. The drag reducer has a good drag reduction effect, and the hydrophobicity, the temperature resistance, the salt resistance and the shear resistance are improved.

The invention discloses an all-solid-state composite dry conductive agent and a preparation method thereof, and belongs to the technical field of batteries. The all-solid-state composite dry conductive agent is prepared by the following steps: uniformly mixing carbon nanotubes, high-dispersion carbon black and graphene to obtain a primary mixture; then preparing a uniformly dispersed glue solution from the composite dispersant and water; and then adding the primary mixture into the glue solution, uniformly mixing, sanding, homogenizing, drying and crushing to obtain the product, the high-dispersion carbon black is obtained by oxidizing carbon black to form active groups such as carboxyl and hydroxyl on the surface of the carbon black, halogenating acyl and then reacting with lithium 2, 5-diaminobenzene sulfonate. The preparation method comprises the following steps: grafting histidine ester into carboxymethyl cellulose by using propylene glycol diglycidyl ester as a cross-linking agent, then introducing allyl-1, 3-sultone, then copolymerizing with lithium 2-acrylamido-2-methylpropanesulfonate and 3-aminobenzoic acid allyl ester protected by fluorenylmethoxycarbonyl, and then deprotecting to obtain the composite dispersant.

The invention relates to the technical field of battery binders, in particular to a water-based binder, a preparation method of the water-based binder and a carbon-coated aluminum foil. The water-based binder comprises a water-soluble monomer, an oil-soluble monomer, an amphiphilic monomer, a functional monomer, an initiator and a neutralizer, the amphiphilic monomer is prepared from at least one of sodium vinyl sulfonate, sodium p-styrenesulfonate, 2-acrylamide-2-methylpropanesulfonic acid and N-vinyl pyrrolidone; the functional monomer comprises at least one of divinylbenzene, pyrrole, phenylacetylene and 3, 4-ethylenedioxythiophene. According to the water-based binder, the water-soluble monomer, the oil-soluble monomer, the amphiphilic monomer and the functional monomer are compounded in proportion, the conductivity of the binder, the wettability to a conductive carbon material and an aluminum foil, the adhesion to the aluminum foil and the like are improved, the prepared battery has excellent cycle stability, and the service life of the battery is prolonged.

The invention relates to the technical field of petroleum drilling fluids, in particular to a preparation method of an anti-calcium tackifier, a brine-based drilling fluid and a preparation method. The preparation method of the anti-calcium tackifier comprises the following steps: A, uniformly mixing the white oil and the emulsifier to form an oil phase for later use; b, dissolving 2-acrylamido-2-methyl-1-propanesulfonic acid, acrylonitrile, a cationic monomer and a vinyl monomer with carboxyl in pure water, adjusting the pH value to 7.0, and uniformly stirring to form a water phase; c, dropwise adding the water phase in the step B into the oil phase in the step A, and uniformly mixing to obtain a stable inverse emulsion; and D, in a nitrogen atmosphere, adding an initiator into the stable inverse emulsion in the step C, and reacting to obtain the anti-calcium tackifier. The brine-based drilling fluid disclosed by the invention can keep good rheological property and stability in a high-temperature environment of 180 DEG C.

The invention discloses a high-temperature-resistant temporary plugging agent for an oil field and a preparation method thereof.The temporary plugging agent is prepared by taking acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and castor oil as reaction raw materials, cross-linking the reaction raw materials with a modified cross-linking agent and carrying out blending polymerization with a modified filler, the molecular structure of the temporary plugging agent is latticed polyacrylamide, a polyacrylamide molecular chain contains an amide group, a sulfonic acid group and carboxyl, the amide group is an uncharged group and is not easily influenced by high-salinity bottom water, the sulfonic acid group can improve the salt resistance of the temporary plugging agent, and the carboxyl can be complexed with hydrogen ions in water, so that the salt resistance of the temporary plugging agent is improved. A side chain contains a polysiloxane chain segment and a long-chain alkyl group, so that the temporary plugging agent can still be normally used in a high-temperature environment, and the long-chain alkyl group forms a hydrophobic micro-area and can be adsorbed with a hydrophobic surface of stratum rock, so that the temporary plugging agent is kept in a stable state in a construction process.

The invention relates to the technical field of hydraulic fracturing exploitation of deep / ultra-deep oil and gas reservoirs, and discloses a gel-coated temporary plugging agent and a preparation method and application thereof.The gel-coated temporary plugging agent comprises a proppant inner core and a degradable gel shell coating the outer surface of the proppant inner core; the degradable gel shell is formed by a gel shell gelling solution, the gel shell gelling solution comprises small-molecule comonomers and a degradable cross-linking agent, and the small-molecule comonomers comprise acrylamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide the initiator is one or more of N, N-dimethylacrylamide, acrylic acid, hydroxyethyl acrylate, benzyl acrylate, 2-propyl acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and N-vinyl pyrrolidone; and the initiator is one or more of N, N-dimethylacrylamide, acrylic acid, hydroxyethyl acrylate, benzyl acrylate, 2-propyl acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and N-vinyl pyrrolidone. The gel-coated temporary plugging agent can be used for effectively plugging in a fracturing time period at high temperature / ultrahigh temperature, and the flow conductivity of fractured cracks can be enhanced by exposing an internal propping agent after the gel-coated temporary plugging agent is degraded.

The invention relates to a temperature-resistant and salt-resistant gel for deep plugging and a preparation method thereof. The gel comprises a main agent, a cross-linking agent, a cross-linking promoting agent, a reinforcing agent, a stabilizing agent and water. The main agent is an acrylamide / 2-acrylamide-2-methylpropanesulfonic acid / N-vinyl pyrrolidone (AM / AMPS / NVP) terpolymer, the temperature-resistant and salt-resistant gel for deep plugging control is suitable for oil reservoirs with the temperature of 110-130 DEG C and the formation water mineralization degree of 5 * 10 < 5 >-10 * 10 < 5 > mg / L, the gelling time is controllable within 73-98 hours, the gel strength after gelling is high, the thermal stability is good, and the temperature-resistant and salt-resistant gel for deep plugging control is suitable for the oil reservoirs with the temperature of 110-130 DEG C and the formation water mineralization degree of 5 * 10 < 5 >-10 * 10 < 5 > mg / L. And long-time deep effective plugging of high-temperature and high-salt oil reservoirs can be realized.

The invention discloses a calcium carbonate scale inhibitor for oil and gas field injection and production and a preparation method thereof, and belongs to the technical field of scale inhibitors. The raw materials adopted by the invention comprise maleic anhydride, sodium hypophosphite, 2-acrylamide-2-methylpropanesulfonic acid and methacryloylethyl sulfobetaine, wherein the molar ratio of the maleic anhydride to the sodium hypophosphite to the 2-acrylamide-2-methylpropanesulfonic acid to the methacryloylethyl sulfobetaine is (100-300): (100-300): (5-15): (50-150). The scale inhibitor provided by the invention is used in the injection-production process of oil and gas fields, a sulfo betaine monomer is introduced into the scale inhibitor, the monomer has positive ions and negative ions, the positive ions and the negative ions have the same isoelectric point and do not influence the whole charge performance, and meanwhile, a sulfonic acid strong polar group is introduced into the negative ions, so that the temperature resistance and salt resistance of the scale inhibitor are improved; the cationic charges can improve the dispersing capacity of the scale inhibitor, so that the scale inhibition effect of the scale inhibitor is improved, the scale inhibitor provided by the invention has a relatively good scale inhibition effect on CaCO3, and the scale inhibition rate can reach 90% or above.

The invention relates to the field of metal extractant preparation, in particular to a metal extractant microcapsule and a preparation method thereof. The preparation method of the metal extraction agent microcapsule comprises the following preparation steps: (1) uniformly mixing ethyl acrylate, methacrylamide, 2-acrylamido-2-sodium methylpropanesulfonate, a cross-linking agent and an initiator, dropwise adding an emulsifier solution under a stirring condition, carrying out ultrasonic treatment, irradiating with ultraviolet light under the stirring condition for 10-20 minutes, washing with pure water, and separating to obtain a metal extraction agent microcapsule; drying to obtain a hollow microcapsule; and (2) vacuumizing the hollow microcapsule obtained in the step (1), adding a metal chelating agent, carrying out ultrasonic treatment for 5-10 hours, filtering, and washing to obtain the metal extractant microcapsule. The preparation process of the metal extractant microcapsule is simple and easy to operate, and the metal extractant microcapsule has a relatively good encapsulation efficiency on a metal chelating agent and has a relatively high removal effect on various metal ions.

The invention discloses a low-temperature-resistant polyacrylamide flocculant suitable for a low-temperature water body and a preparation method of the low-temperature-resistant polyacrylamide flocculant. The flocculant is prepared from the following raw materials in parts by weight: 60 to 85 parts of acrylamide (AM), 15 to 40 parts of low-temperature-resistant functional monomer 2-acrylamide-2-methylpropanesulfonic acid (AMPS), 0.5 to 5 parts of hydrophobic modified monomer, 0.1 to 1.0 part of molecular chain regulator, 0.01 to 0.1 part of initiator, 120 to 200 parts of deionized water and 1 to 5 parts of post-added antifreezing agent. The product is prepared by an aqueous solution polymerization method. According to the invention, by introducing the rigid sulfonic monomer and the functional monomer with large steric hindrance and compounding the specific antifreezing agent, the extensibility and diffusion performance of a polymer molecular chain in low-temperature (less than or equal to 10 DEG C) water are remarkably improved, so that large and dense flocs can be quickly formed under the low-temperature condition, and an excellent flocculating settling effect is kept.

The invention provides application of sodium 2, 3-dimercaptopropanesulfonate as an inhibitor in low-alkalinity copper-sulfur flotation separation, and relates to the technical field of mineral separation. When the compound serves as an inhibitor, the compound, a collecting agent and a foaming agent are prepared into a composite flotation reagent and used for low-alkalinity flotation separation of chalcopyrite and pyrite, flotation separation is conducted through the steps of one-time roughing, at least one-time scavenging and at least one-time concentration after ore grinding and grading, and copper concentrate is collected; the method can effectively solve the problems that the copper-iron separation effect is poor in the process of flotation separation of the chalcopyrite and the pyrite, the copper recovery rate is low due to addition of a large amount of lime and the like, the chalcopyrite and the pyrite can be efficiently separated under the low-alkalinity condition through the specific flotation process, and the flotation effect on the chalcopyrite is improved.

The invention relates to a novel salt-resistant drilling fluid filtrate reducer and a preparation method thereof, and belongs to the technical field of drilling fluid filtrate reducers, the novel salt-resistant drilling fluid filtrate reducer comprises the following raw materials by weight: 15-20 parts of N, N-dimethylacrylamide, 10-14 parts of 2-acrylamido-2-methylpropanesulfonic acid, 6-8 parts of N-vinyl pyrrolidone, 0.9-1.2 parts of a silane coupling agent KH570, and 1-3 parts of nano clay. The adhesive is prepared from the following components in parts by weight: 5-6 parts of polyethylene glycol, 0.5-0.8 part of hexadecyl methyl ammonium bromide, 20-30 parts of hydroxyethyl cellulose, 0.5-1 part of an initiator, 0.3-0.5 part of a cross-linking agent and 60-70 parts of deionized water. The filtrate reducer disclosed by the invention has excellent salt resistance, filtrate reduction performance and good thermal stability.

The invention provides a dry powder drag reducer for fracturing fluid and a preparation method of the dry powder drag reducer, and belongs to the technical field of fracturing materials for well drilling, and the preparation method comprises the following steps: dissolving 4-bromobutyryl chloride and N-dodecyl methylamine in acetonitrile, heating and stirring for reaction, adding polyethylene glycol monomethyl ether acrylate and dichloromethane, stirring and purifying in a nitrogen atmosphere to obtain a dry powder drag reducer; a double-tailed hydrophobic monomer is obtained; uniformly mixing the core-shell SiO2 / Fe3O4 composite nanoparticles, an ethanol water solution, KH570 and an ammonia solution, stirring, and purifying to obtain modified SiO2 / Fe3O4; the preparation method comprises the following steps: adding acrylamide, acrylic acid, sodium 2-acrylamido-2-methylpropanesulfonate, a double-tailed hydrophobic monomer and modified SiO2 / Fe3O4 into water, uniformly mixing, adjusting the pH value, introducing nitrogen, mixing and stirring, adding an azo initiator, stirring, cooling, purifying, carrying out vacuum drying, and crushing into powder, thereby obtaining the dry powder drag reducer for the fracturing fluid. The drag reducer has certain heat resistance while achieving good drag reduction performance, and can be better applied to fracturing operation in the well drilling process.

Solid electrolyte compositions and solid-state batteries are disclosed, which comprise a solid electrolyte layer including a sulfide-containing solid-state electrolyte material and a compound of Chemical Formula 1. The sulfide-containing solid-state electrolyte material includes but is not limited to Li6PS5Cl (“LPSC”), an LPS-based glass or glass ceramic of formula xLi2S·yP2S5, wherein x+y=1, or an argyrodite-based sulfide-based solid electrolyte or formula Li6PS5X, wherein X═Cl, Br, or I) or Li6-yPS5-yCl1+y, where y is <1. In some aspects, the compound of Chemical Formula 1 is sodium 3-mercapto-1-propanesulfonate (3M1P).

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 belongs to the technical field of lithium ion battery solid electrolytes, and discloses a multi-component in-situ polymerized gel solid electrolyte and a preparation method and application thereof, the gel solid electrolyte is prepared by adding an amide cross-linking agent and a polymeric monomer into a basic electrolyte to obtain a precursor solution, then adding an initiator, and carrying out in-situ polymerization at 45-70 DEG C for 6-12 hours, the amide cross-linking agent is one or more of N, N '-methylene bisacrylamide, polyacrylamide, poly (2-acrylamide-2-methyl-1-propanesulfonic acid), polymethacrylamide, polyethylene glycol diacrylamide, polyether amide or adipamide. The first coulombic efficiency of an LCOLi button cell assembled by the multi-component in-situ polymerization solid-state gel electrolyte reaches 94.81%, the capacity retention rate after 500 cycles at 3-4.6 V still reaches 80% or above, and the LCOLi button cell can safely pass a needle test and can be applied to the field of solid-state electrolytes.

The invention relates to the technical field of thickening agents for fracturing fluids, and particularly discloses a composite fracturing fluid thickening agent for an oil and gas well and a preparation process of the composite fracturing fluid thickening agent. The invention relates to a composite fracturing fluid densifier for oil and gas wells. The composite fracturing fluid densifier comprises 30-50 parts of acrylamide; 20 to 35 parts of 2-acrylamide-2-methyl propane sulfonic acid; 10 to 25 parts of acryloyl morpholine; 3-8 parts of a polyether amine modified organic zirconium cross-linking agent; 2-6 parts of sulfonated konjac gum; 1-5 parts of a salt-tolerant synergistic aid; 0.5-2 parts of a composite initiator; 0.1 to 0.8 part of an inhibitor; and 150 to 180 parts of deionized water. The fracturing fluid thickening agent provided by the invention has the advantages of high viscosity, high temperature resistance and high salt resistance.