49 results about "Acrydite" patented technology

The application belongs to the technical field of seawater desalination, and more particularly relates to a zwitterionic copolymer hydrogel with high pore connectivity and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding a crosslinking agent and a photoinitiator into a mixed aqueous solution containing methacryloyloxyethyl trimethyl ammonium chloride, 2-acrylamido-2-methyl propane-1-sodium sulfonate and Na2SO4, mixing uniformly, and performing polymerization under ultraviolet light to form a polymer; and (2) forming a photothermal layer on the surface of the polymer, and post-treating to obtain the zwitterionic copolymer hydrogel with high pore connectivity. The hydrogel prepared by the application has the characteristics of high pore connectivity, and can still maintain excellent evaporation rate in the process of continuous operation; and has excellent salt shrinkage resistance. The hydrogel prepared by the application has wide application in the fields of water treatment, seawater desalination and fresh water recovery.

The application relates to the field of high polymer materials, and particularly discloses an acrylic ester copolymer containing an ionic liquid monomer as well as a preparation method and application thereof. The ionic liquid monomer is capped with an acrylamide group or an acryloyloxy group, is connected to an acrylic ester chain segment main body through a copolymerization mode, and an acrylic ester copolymer solution is obtained. The acrylic ester copolymer solution is made into an electric debonding adhesive layer, the 180-degree peeling strength of which can be reduced by more than 90% under the condition that an applied voltage is less than or equal to 30V and an applied voltage time is less than or equal to 30s, and the performance of the adhesive layer almost does not attenuate after 100 cycles. The problem of high debonding voltage and long debonding time of the acrylic ester pressure-sensitive adhesive is solved. Through aging test, the adhesive layer has high tack, and has no problems of ionic liquid migration, precipitation and surface contamination.

The application discloses a kind of high adhesion hydrogel for electroencephalogram test and its preparation method and application, belong to biomedical engineering technical field.The hydrogel includes the following components crosslinked product: anionic monomer, cationic monomer, monomer and mutual penetration agent;The anionic monomer is any one of malic acid, gluconic acid, citric acid and lactic acid, cationic monomer is betaine or acetyl L-carnitine, monomer is N, N-dimethyl acrylamide, acrylic acid, sodium acrylate, 4-acryloyl morpholine or sodium acrylamidomethyl propane sulfonate, mutual penetration agent is sodium chloride aqueous solution or sodium chloride water-retaining agent solution.Preparation, cationic monomer is mixed and dissolved, vacuum drying, adding photo initiator mixing, then mutual penetration agent is added, and it is obtained by ultraviolet light crosslinking.The hydrogel of the application has high adhesion (adhesion strength reaches 203.22 kPa), high ion mobility and excellent biocompatibility, and the signal gain in EEG and ECG test reaches 2-3 times of traditional conductive paste, which can be widely used in medical conductive paste field.

The application discloses a kind of anti-fake color-changing ink and printing process for flat paper to print two-dimensional code, belong to the technical field of ink for anti-fake.The anti-fake color-changing ink according to weight fraction, including: acrylic emulsion 35-40 parts, polyurethane emulsion 15-20 parts, bisphenol A type epoxy resin 5-8 parts, thermochromic material 6-10 parts, hydrogel coated thermochromic material 2-5 parts, temperature-sensitive color-changing capsule 5-8 parts, scratch-resistant additive 2-3 parts, first coupling agent 1-2 parts, second coupling agent 1-2 parts, leveling agent 0.5-0.8 parts, defoaming agent 0.3-0.5 parts, stabilizer 0.5-0.8 parts, first crosslinking agent 2-3 parts, methylsilane 1-2 parts, wax emulsion 1-2 parts, wetting agent 2-3 parts, preservative 0.1-0.5 parts and deionized water 15-20 parts;The hydrogel coated thermochromic material is acrylamide-based hydrogel coated thermochromic material.The anti-fake color-changing ink can simultaneously realize the promotion of anti-precipitation, high adhesion, scratch resistance, high-temperature aging resistance by the synergy of hydrogel coated thermochromic material and scratch-resistant additive.

The application discloses a kind of loose sandstone gas reservoirs gel particles for water plugging and a preparation method thereof, and relates to the technical field of preparation process of gel particles for water plugging.The existing gel particles after water absorption network structure has the problems of large brittleness, easy to break, poor long-term stability, and the total weight is 100 parts, including the following components:12-18 parts of acrylamide monomer, 1-3 parts of 2-acrylamido-2-tetradecyl ethanesulfonic acid, 1-3 parts of sepiolite, 0.5-2 parts of hydrophilic fiber, 0.12-0.18 parts of N-hydroxymethyl acrylamide, 0.015-0.06 parts of initiator, and the balance is water;The 2-acrylamido-2-tetradecyl ethanesulfonic acid used is a branched salt-tolerant monomer, which is crosslinked and polymerized with sepiolite of fibrous structure and hydrophilic fiber with excellent mechanical tensile properties, so that the tensile properties and salt tolerance of the prepared gel particles are improved.

The present invention relates to: copolymer particles comprising a core part and a shell part surrounding the core part, the core part comprising a hard monomer unit and a soft monomer unit, and the shell part comprising an acrylic acid-based monomer unit, an acrylate-based monomer unit, an acrylamide-based monomer unit, or a combination thereof; a binder composition comprising the copolymer particles; a slurry; an electrode; and a secondary battery comprising the electrode.

A water-soluble polymer has weight-average molecular weight greater than 10 million daltons. This polymer is obtained from 2-acrylamido-2-methylpropane sulfonic acid and / or one of its salts at least partially of renewable and non-fossil origin. The polymer can be used in the field of enhanced oil and gas recovery or in the treatment of tailings from the mining industry.

The present invention relates to a copolymer, and a copolymer composition, negative electrode slurry, negative electrode, and secondary battery comprising same, the copolymer comprising an acrylic acid-based monomer unit, an acrylamide-based monomer unit, and a monomer unit including a sulfonic acid group.

The application belongs to the technical field of oil exploitation, and relates to a secondary cross-linking polymer gel system, in particular to a secondary cross-linking cucurbituril hybrid polymer gel system for preventing channeling of a tight oil reservoir. The cucurbituril hybrid polymer comprises the following raw materials: acrylamide, cucurbituril acrylate, N-vinyl imidazole and 2-acrylamido-dodecyl sulfonic acid. The cucurbituril hybrid polymer can be made into a polymer gel, and the polymer gel has good effects of reducing filtration loss and slowing down the damage of filtration loss liquid to a matrix. Then, the primary weak cross-linking gel enters the deep part of the oil reservoir, and slowly forms the secondary cross-linking gel, and the secondary cross-linking gel has good stability under high-temperature and high-salt conditions.

The application discloses a eutectic electrolyte based on ionic liquid and application thereof in a water-based zinc-iodine battery, and belongs to the technical field of eutectic electrolytes. First, a sulfonic acid pyrrolidone copolymer is prepared by radical polymerization with 2-acrylamido-2-methylpropanesulfonic acid and N-vinylpyrrolidone as monomers, then a stable eutectic liquid phase system is constructed by regulating the amount of deionized water with zinc sulfate heptahydrate as a zinc salt and 1-ethyl-3-methylimidazolium chloride as a core functional component, and then the sulfonic acid pyrrolidone copolymer is introduced to prepare the eutectic electrolyte based on ionic liquid. When the electrolyte is used for assembling the water-based zinc-iodine battery, the iodine-based four-electron transfer reaction can be stably realized, the migration of iodide and the disorderly growth of zinc dendrites are effectively inhibited, and the water-based zinc-iodine battery has long-term cycle stability.

This invention discloses a method for preparing polyacrylonitrile-acrylamide-based electrode materials and their battery applications. Preparation steps: 1. Prepare a mixture of acrylonitrile, acrylamide monomer, crosslinking agent, initiator, and solvent, and obtain the copolymer through free radical copolymerization; 2. Mix the copolymer with elemental sulfur, vulcanize under an inert atmosphere to remove unreacted sulfur, and obtain a vulcanized copolymer; 3. Mix the vulcanized copolymer, conductive agent, and binder to form a slurry, and coat it onto carbon-coated aluminum foil to obtain the positive electrode. This invention introduces acrylamide groups to enhance sulfur fixation through the synergistic effect of amide bonds and cyano groups, optimizing hydrophilicity and electrolyte wettability. When applied to lithium batteries, this positive electrode preferably exhibits a specific capacity exceeding 750 mAh / g, a capacity retention rate ≥88% at 2C rate, and a retention rate ≥85% after 200 cycles. This method is simple to operate, highly repeatable, and suitable for large-scale production, solving the problems of insufficient sulfur fixation and rapid cycle decay in traditional polyacrylonitrile-based materials.

This application relates to a temperature- and salt-resistant polyacrylamide and its preparation method, belonging to the field of polymer materials. The raw materials for preparation include the following components in parts by weight: 80-100 parts acrylamide, 46-72 parts a composite ionic composition, 3.5-5.5 parts a hydrophobic associating monomer, 2-4 parts an emulsifier, 0.05-0.15 parts an initiation system, 15-25 parts a hydrolysate, and a pH adjuster; the composite ionic composition includes 2-acrylamido-2-methylpropanesulfonic acid, sodium p-styrenesulfonate, and dodecyl dimethyl benzyl ammonium chloride. The preparation method includes the following steps: adding acrylamide, the composite ionic composition, and the hydrophobic associating monomer to water, adding an emulsifier, adjusting the pH to neutral with a pH adjuster, stirring to dissolve and deoxygenating, adding the initiation system under a protective atmosphere, stirring and reacting to obtain a polymer colloid, granulating, adding a hydrolysate, hydrolyzing, drying, and pulverizing to obtain the temperature- and salt-resistant polyacrylamide. This application has the effect of improving the salt resistance and temperature resistance of polyacrylamide.

The application provides a scale-inhibiting reverse osmosis membrane, comprising a support layer and a polyamide functional layer containing a composite scale-inhibiting material; wherein the composite scale-inhibiting material is formed by a terpolymer of polyepoxysuccinic acid, 2-acrylamido-2-methylpropanesulfonic acid and dopamine methacrylamide through free radical copolymerization and loading on a nano carrier. The preparation method of the scale-inhibiting reverse osmosis membrane is as follows: after the nano composite scale-inhibiting material is synthesized, the nano composite scale-inhibiting material is mixed with a polyamine monomer to be used as an aqueous phase solution for preparation, a polyacyl chloride monomer is dissolved in an organic solvent to be used as an oil phase solution for preparation, the support layer is immersed in the aqueous phase solution, then nitrogen is blown, and then the reverse osmosis membrane is formed in the organic phase solution, and finally, thermal grafting is performed. The scale-inhibiting reverse osmosis membrane provided by the embodiment of the application has the technical effects of environmental protection and prevention of static scale formation.

Disclosed in the present invention are a micro-crosslinked interlocking fluid loss reducer and a preparation method therefor, and a cement slurry system for well cementing. The preparation method for the fluid loss reducer comprises: mixing 2-acrylamido-2-methylpropanesulfonic acid, a vinyl-containing carboxylic acid or a derivative monomer thereof, and water and adding a pH regulator to regulate the pH value of the system; then adding a modified acrylamide monomer, a vinyl cyclic monomer, and a crosslinking agent; then adding a molecular weight regulator, a chelating agent, and an oxidizing agent to obtain a mixed system; and dropwise adding an aqueous solution of a reducing agent to the mixed system for reaction for a period of time to obtain the fluid loss reducer. The fluid loss reducer of the present invention has better heat and salt resistance and fluid loss reduction performance, can improve the settling stability of the cement slurry system, has no adverse effects on the comprehensive performance of the cement slurry system, and has a wide range of applicable temperatures.

The application discloses a kind of water-based friction reducer for fracturing and preparation method thereof, it is related to oil fracturing technical field.The application is prepared when water-based friction reducer for fracturing is used, first, bis (3-dimethylamine propyl) amine isopropyl alcohol is reacted with methacryloyl chloride to obtain bis tertiary amine monomer;Bis tertiary amine monomer is reacted with bromine dodecane to obtain Gemini quaternary ammonium hydrophobic monomer;Acrylamide, acrylic acid, 2-acrylamide-2-methylpropane sulfonic acid sodium, Gemini quaternary ammonium hydrophobic monomer are copolymerized to obtain copolymer modified polyacrylamide;Copolymer modified polyacrylamide, Gemini surfactant, suspending agent, dispersant, water are mixed to obtain water-based friction reducer for fracturing.The water-based friction reducer for fracturing prepared by the application has the advantages of fast dissolving speed, salt resistance and high friction reduction rate.

This invention relates to the field of fabric finishing agents, and more particularly to a durable hydrophilic softening agent for irregularly shaped cross-section nylon fabrics and its preparation method. The aforementioned durable hydrophilic softening agent for irregularly shaped cross-section nylon fabrics comprises, by weight, the following raw materials: 10-15 parts adipic acid, 5-10 parts hexamethylenediamine, 1-5 parts amino-terminated polyamide amine, 10-30 parts polyether amine 400, 0.1-0.5 parts catalyst A, 30-50 parts double-terminated epoxy polyether silicone oil, 1-5 parts polyether amine 900, 0.1-1 part diethylenetriamine, 1.1-4 parts glacial acetic acid, 5-15 parts surfactant, 10-20 parts polyethylene glycol, 1-5 parts hexamethylene diisocyanate, 0.01-0.1 parts catalyst B, 1-5 parts 2-acrylamido-2-methylpropanesulfonic acid, 1-3 parts dicyandiamide, and 1-5 parts amino silicone oil. This invention has outstanding softness, good elasticity, hydrophilicity, and washability.

This invention provides a method for preparing zinc molybdate and its application in preventing metal corrosion, relating to the field of chemical technology. For the first time, this invention utilizes sodium dodecylbenzenesulfonate (SDBS), polyoxyethylene-polyoxypropylene block copolymer (F-68), and polyacrylamide (PAM) to prepare novel zinc molybdates with different morphologies via a hydrothermal method. In this invention, the aforementioned novel zinc molybdate is introduced as a functional filler into epoxy resin to prepare a composite anti-corrosion coating. It was found that the prepared anti-corrosion coating exhibits superior long-term anti-corrosion performance, providing a theoretical basis and experimental foundation for developing efficient and controllable zinc molybdate-based anti-corrosion fillers.

A polishing composition for a semiconductor process according to one embodiment of the present disclosure includes polishing particles and a first polishing control agent which is a cationic polymer.The first polishing control agent includes a cationic residue derived from a cationic compound and an acrylamide-based residue.The acrylamide-based residue includes a first acrylamide-based residue represented by Chemical Formula 1-1 below and a second acrylamide-based residue represented by Chemical Formula 1-2 below, which is distinct from the first acrylamide-based residue.In Chemical Formula 1-1, R1 and R2 are each independently hydrogen, a methyl group, or an ethyl group.In Chemical Formula 1-2, R3 is hydrogen, a methyl group, or an ethyl group, and R4 is an alkyl group having 3 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms.When the polishing composition having such characteristics is applied to a CMP process, the polishing composition may provide a polished substrate having a smoother surface while maintaining a polishing speed of at least a predetermined level.

The present invention relates to: a binder composition comprising a copolymer, which includes an acrylamide-based monomer unit and a vinyl pyrrolidone monomer unit, and a first crosslinking agent; a slurry comprising the binder composition; a separator; and a secondary battery comprising the binder composition. The binder composition according to the present invention can produce a separator having high heat resistance, and the secondary battery comprising same has excellent performance.

This invention belongs to the field of clarifier technology, specifically relating to an environmentally friendly swimming pool water clarifier based on modified chitosan. It is formed by grafting and crosslinking chitosan with 2-acrylamido-2-methylpropanesulfonic acid and vinylimidazole using an initiator and a crosslinking agent. This invention uses AMPS and VIM to double-graft modify chitosan, giving the product excellent flocculation and turbidity removal, flocculation and algae removal, chlorine resistance, and wide pH adaptability. At a dosage of 5 mg / L, the turbidity removal rate reaches 96.2%, and the algae cell removal rate reaches 93.5%, demonstrating comprehensive performance superior to existing products such as unmodified chitosan, polyaluminum chloride, and cationic polyacrylamide.

The present application relates to fracturing fluid additive technical field, it is a kind of low liquid film multifunctional emulsion thickening agent and its preparation method, the former raw material is acrylamide, acrylic acid, 2-acrylamido-2-methylpropane sulfonic acid, ethylene oxide, wetting reverse type polymerization monomer, white oil, initiator, tackifying agent, emulsifier, styrene monomer and water according to mass fraction count.This application enhances the displacement driving force and emulsion temperature resistance and salt tolerance of filtrate loss liquid and part of broken glue liquid by selecting wetting reverse type polymerization monomer, significantly reduces the filtration of most gas field fracturing fluid, has multiple functions such as cleanup, anti-swelling, core liquid film thickness reduction, etc., has greater application value, on the other hand, micellar tackifying control mechanism is introduced, micellar controllable tackifying is realized, and it has irreplaceable effect in flowback fluid utilization and high temperature resistance.

This invention relates to the field of oil and gas field development technology, specifically to a gel microsphere for controlled water recovery of heavy oil, its preparation method, and its application. This invention utilizes the differences in the movement trajectories of polymerizable surfactant monomers, acrylamide-based polymer monomers, and biomass cellulose under the influence of molecular thermal motion and interfacial tension to achieve differentiated distribution of each monomer within the aqueous phase during reverse suspension polymerization. This results in the preparation of a "core-shell" type gel microsphere with a functional outer shell that exhibits delayed water absorption and high-temperature-induced re-crosslinking, and a core with anti-swelling and high-strength properties. This fundamentally solves the problems of existing gel systems being unable to withstand the high temperatures of steam huff and puff operations, having poor sealing effects, requiring large quantities, and incurring high costs.

The present application relates to the drilling fluid with the anti-sloughing agent and preparation method, the total mass is 100% by mass percentage, is composed of the following components: lipophilic natural asphalt material 60-75%, hydrophilic compound material 10-15%, reinforcing agent 5-8%, oil phase dispersing agent 2-3%, lubricating film forming agent 1-2%, initiator 0.5-1.0%, regulator 0.5-1.0%; The lipophilic natural asphalt material is compounded by Karamay natural rock asphalt and Sichuan Qingchuan natural lake asphalt according to the mass ratio (6-8):(2-4); The hydrophilic compound material is compounded by 2-acrylamide-2-methylpropane sulfonic acid and hydroxyethyl cellulose according to the mass ratio (3-5):(1-2); The present application has the advantages of good oil-based compatibility, excellent plugging and anti-sloughing effect, simple process, low cost, stable performance, convenient use, pressure resistance, durability and stability.

A gel material and a multifunctional gel pad, and preparation methods thereof and use are provided. The gel material includes the following raw materials, in parts by mass: 18 parts to 21 parts of 2-acrylamido-2-methylpropane sulfonic acid sodium salt (AMPS-Na), 2 parts to 4 parts of acrylic acid, 0.04 parts to 0.08 parts of a cross-linking agent, 30 parts to 40 parts of a water absorbent, 1.5 parts to 2 parts of a reinforcing agent, 0.05 parts to 0.1 parts of sodium hydroxide, 0.01 parts to 0.05 parts of a photoinitiator, 0.3 parts to 0.6 parts of a cosolvent, and 15 parts to 20 parts of water.

The application belongs to the technical field of ecological restoration, and discloses a kind of saline-alkali soil dry field improver and application method, the improver includes the following mass fraction of raw materials: calcium-based material 30~45 parts, modified biochar-polyacrylamide-based glue complex 20~30 parts, salt-tolerant microbial bacteria 4~8 parts, slow-release synergist 6~10 parts, organic acid complexing agent 8~15 parts, humic acid substance 10~20 parts and trace element nutrient salt 3~6 parts;The calcium-based material is one or more of desulfurization gypsum, phosphogypsum and anhydrous calcium sulfate after pre-activation treatment.The improver of the application is through three mechanisms of chemical replacement, structure stability and biological activation, and at the same time, it is matched with a layered application method highly adapted to the water and salt migration law of dry field, and it shows strong and durable comprehensive improvement effect on dry fields with different degrees of salinity, and it greatly improves crop yield, and has significant practical value and wide applicability.

The present application relates to the technical field of fracturing fluid, and is a combined gel fracturing fluid and a preparation method thereof.The raw materials of the combined gel fracturing fluid include waterproof lock salt-resistant fracturing thickening agent, emulsifier, mineral oil, suspension stabilizer and dispersion stabilizer.In the combined gel fracturing fluid, the raw material waterproof lock salt-resistant fracturing thickening agent has large stable viscosity and excellent viscosity performance, because the sodium 4-vinylbenzenesulfonate is introduced into the waterproof lock salt-resistant fracturing thickening agent, which gives the waterproof lock salt-resistant fracturing thickening agent the dual function of thickening before gel breaking and waterproof locking after gel breaking.Meanwhile, the raw material multi-site nano crosslinking agent is obtained by introducing modified graphene oxide with two-dimensional planar structure into conventional metal zirconium salt, and has high crosslinking efficiency.Finally, the combined gel fracturing fluid formed by the high-efficiency synergy of the waterproof lock salt-resistant fracturing thickening agent and the multi-site nano crosslinking agent has good salt resistance, temperature resistance, shear resistance and gel breaking performance.

The application relates to the field of oil and gas development, in particular to a centrifugal liquid diluent, a drilling fluid compounding system and preparation and application thereof. The centrifugal liquid diluent comprises 90-110 parts of acrylamide, 20-40 parts of 2-acrylamido-2-methylpropanesulfonic acid, 1-20 parts of dimethyldiallylammonium chloride, 50-70 parts of n-hexane, 50-70 parts of Span 80 and 0.5-5 parts of an initiator. The drilling fluid compounding system comprises a drilling fluid centrifugal liquid, a centrifugal liquid diluent and diesel oil, wherein the mass percentage of the centrifugal liquid diluent in the drilling fluid compounding system is 0.3-0.5% based on the mass of the drilling fluid centrifugal liquid, and the mass percentage of the diesel oil is 20-50%. The application can solve the problem of poor high-temperature resistance of the diluent in the prior art.