1664 results about "ALLYL SUCROSE" patented technology

A biodegradable polymer composite, a method of making the same and use for same are provided. The biodegradable polymer composite has about 30 to 99.5% by weight of a polymer selected from a group consisting of polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polyhydroxyalkanoates (PHA), and polycaprolactone (PCL) grafted with a compatibilizer selected from a group consisting of maleic anhydride, glycidyl methacrylate, pyromellitic anhydride, acrylic acid, polyacrylic acid, methylene diphenyl diisocyanate, poly(glycidyl methacrylate, copolymer(s) of glycidyl methacrylate; and about 0.5 to 50 % by weight a nano-filler or a micro-filler. The biodegradable polymer composite does not contain polylactic acid. Surfaces of the nano-filler or the micro-filler may be modified using a grafting agent so that the biodegradable polymer composite has enhanced mechanical properties, increased heat resistance, compostablity and / or improved processability. The biodegradable polymer composite may be used to make flexible articles, such as a freezer wrap and a farming sheet.

The invention provides a thick electrode and a preparation method thereof, and a lithium battery, the thick electrode comprises a current collector and an active coating, the active coating comprises an active material, a conductive agent, a dispersant and a composite binder, the composite binder comprises a binder A and a binder B, the binder A comprises at least two of sodium carboxymethyl cellulose, a polyacrylic acid binder and an acrylonitrile multipolymer, and the binder B comprises at least one of polytetrafluoroethylene and butadiene styrene rubber. The thick electrode has the characteristics of stable structure, good conductivity and high ion transmission efficiency, and the cycling stability of the battery using the thick electrode can be improved.

Provided in the present invention are a polyacrylic acid or polyacrylate water-based binder, and a preparation method therefor and the use thereof. The polyacrylic acid or polyacrylate water-based binder is a polymer obtained by polymerizing polymeric monomers, the polymeric monomers comprising a hard monomer, a soft monomer and a functional monomer. The polyacrylic acid or polyacrylate water-based binder provided by the present invention has relatively high binding power and relatively good flexibility and electrochemical stability, and has good application prospects in the field of negative electrode sheets of lithium-ion batteries.

The invention provides sodium-ion battery positive electrode slurry, a positive electrode plate, a preparation method of the positive electrode plate and a sodium-ion battery, and relates to the technical field of sodium-ion batteries, the sodium-ion battery positive electrode slurry comprises a positive electrode active material, a conductive agent, a binder, a composite dispersant and a solvent; the composite dispersing agent is a product formed by mechanically mixing an ionic dispersing agent and a polyoxyethylene ether nonionic dispersing agent or a compound formed by chemically reacting the ionic dispersing agent and the polyoxyethylene ether nonionic dispersing agent, and the ionic dispersing agent is polyacrylic acid and a derivative thereof; and the positive electrode active material is a polyanion material. According to the positive electrode slurry disclosed by the invention, the ionic dispersant of polyacrylic acid and a derivative thereof and the polyoxyethylene ether nonionic dispersant are compounded for use, so that the positive electrode slurry has good dispersity and stability, the provided positive electrode slurry is good in dispersity, the resistance of a positive electrode plate is low, and the cycle performance of the sodium ion battery is excellent.

The invention belongs to the technical field of lithium ion batteries, and discloses an amidated polyacrylic acid water-based polymer binder for a silicon-based negative electrode of a lithium ion battery and a preparation method and application of the amidated polyacrylic acid water-based polymer binder for the silicon-based negative electrode of the lithium ion battery. The preparation method comprises the following steps: under a protective atmosphere, sequentially adding 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and levodopa, stirring to fully react, carrying out dialysis freeze-drying treatment to obtain a primary product PL, and uniformly mixing the PL with glycerol to obtain the product. According to the binder, a dynamic bond is successfully introduced, the transportation efficiency of lithium ions is improved, a three-dimensional network structure is constructed, adverse stress generated by volume expansion of a SiOx negative electrode material in the charging and discharging process of an electrode can be effectively inhibited, and the SiOx negative electrode shows good cycling stability.

The present invention provides an electrically-conductive composite water-based binder as well as a preparation method therefor and the use thereof. The electrically-conductive composite water-based binder comprises in parts by weight: 90-100 parts of a polyacrylic acid or polyacrylate water-based binder and 0.1-10 parts of an electrically-conductive filler. By means of introducing the electrically-conductive filler into the binder, the electrically-conductive composite water-based binder for lithium ion batteries which has flexibility, low swelling, good binding force and high conductivity is prepared, so that the binder plays a better role in lithium ion batteries.

The invention is applicable to the technical field of daily cleaning chemicals, and provides a double-shell probiotic microcapsule which comprises probiotics, a fat-soluble plant extract, cellulose nanocrystals, a polyacrylic acid-chitosan compound, a surfactant, diisocyanate, polyethylene glycol and ethyl acetate. A wall material of the microcapsule is formed by compounding a polyacrylic acid-chitosan compound and a fat-soluble plant extract, the particle size D50 is smaller than or equal to 5 microns, the microcapsule is stable in an environment with the pH being 8-10, and the microcapsule is broken to release probiotics when the pH is smaller than or equal to 6. The outer layer is polyacrylic acid / chitosan compound / polyurethane crosslinking (pH response), the inner layer is coconut oil and soybean oil (fat-soluble core), meanwhile, the material preparation process is simple, the controllable degree is high, and the material is suitable for batch preparation.

The invention discloses a silicon negative electrode binder as well as a preparation method and application thereof. The silicon negative electrode binder is a graft copolymer with a comb-shaped structure; the grafted copolymer comprises a polyurethane chain segment forming a main chain of the comb-shaped structure, a polyacrylic acid chain segment serving as a branch chain and connected to the main chain through a covalent bond, and a fluorine-containing chain segment. According to the preparation method, a graft copolymerization method is adopted, the preparation method is carried out in a water-based system, the silicon negative electrode binder with hardness and softness is obtained, and the silicon negative electrode binder is applied to a lithium battery through the synergistic effect of mechanical property, interface stability and electrochemical performance. And a solution of a key material is provided for a high-capacity and long-cycle lithium battery which takes an active material with high silicon content as a negative electrode.

The invention provides a secondary battery, a preparation method of the secondary battery and an electronic device, the secondary battery comprises a positive electrode plate, a negative electrode plate, a diaphragm and an electrolyte, the negative electrode plate comprises a negative electrode current collector and a negative electrode material layer located on at least one surface of the negative electrode current collector, and the negative electrode material layer comprises hydrophobic modified polyacrylic acid; powder of the negative electrode material layer is dissolved in deionized water to obtain first slurry with the solid content of 45 wt%-50 wt%, the shear rate is 0.1 S <-1 >, the shear viscosity eta of the first slurry is 1 mPa.s, and eta is larger than or equal to 1000 and smaller than or equal to 30000. When the negative electrode material layer comprises the hydrophobic modified polyacrylic acid, in the preparation process of the negative electrode plate, the negative electrode slurry containing the hydrophobic modified polyacrylic acid has the characteristic of high viscosity under low shear, so that the risk of edge thinning after coating is reduced, and the electrode assembly interface in the later period of circulation is improved.

The invention discloses a method for synthesizing electronic-grade ethyl acetate through catalytic esterification of acidic ion exchange resin, and belongs to the technical field of ethyl acetate preparation. The method comprises the following steps: mixing crosslinked polystyrene white balls and a swelling agent, and dropwise adding concentrated sulfuric acid for reaction to obtain S-PS resin; mixing an EDTA disodium salt saturated solution and a polyacrylic acid solution, adding a cross-linking agent and an emulsifier, and carrying out a cross-linking curing reaction to obtain EDTA microcapsules; the preparation method comprises the following steps: dispersing S-PS resin in a solvent, adding EDTA microcapsules, a dehydration condensation agent and a catalyst, reacting under the protection of inert gas, and filtering and recovering after the reaction is finished to obtain S-PS-EDTA resin; mixing glacial acetic acid, absolute ethyl alcohol and S-PS (at) EDTA resin for reaction, and filtering and collecting liquid after the reaction is finished; and rectifying the collected liquid to obtain the product. According to the method provided by the invention, metal impurities can be chelated in the synthesis process, and the electronic-grade ethyl acetate with high purity and low impurity content is produced.

The invention discloses a starch-based full-biodegradable mulching film capable of being rapidly degraded and a preparation method of the starch-based full-biodegradable mulching film, and belongs to the technical field of degradable materials.The preparation method comprises the steps of tea polyphenol calcium salt preparation, filler preparation, thermal plasticization and film preparation. The preparation of the filler comprises the following steps: adding silicon dioxide into a polyacrylic acid aqueous solution, stirring and centrifuging at room temperature, taking a precipitate, adding the precipitate into a polyvinylpyrrolidone aqueous solution, adjusting the pH value to 3-3.5, stirring and centrifuging at room temperature, taking the precipitate, adding the precipitate into the polyacrylic acid aqueous solution, adjusting the pH value to 3-3.5, stirring and centrifuging at room temperature, taking the precipitate, and freeze-drying to obtain the filler. The starch-based full-biodegradable mulching film prepared by the preparation method disclosed by the invention is good in processability, waterproofness and heat resistance and high in mechanical strength, the problem of phase separation does not occur in preparation, the problem of plasticizer precipitation does not easily occur in long-term use, and rapid degradation can be realized.

The invention discloses a dynamic borate bond-based self-healing polyacrylic acid binder and a preparation method thereof. The dynamic borate bond-based self-healing polyacrylic acid binder comprises a polymer main chain and a dynamic cross-linking agent, the dynamic cross-linking agent is a polyol compound containing at least two pairs of ortho-hydroxyl groups; the polymer main chain is formed by copolymerizing the following monomers: an acrylic structural monomer, the molar fraction of which accounts for 85-94% of the total monomer; a functional monomer containing a boric acid group, wherein the molar fraction of the functional monomer accounts for 3-8% of the total monomer; the mole fraction of the flexible monomer containing the acrylate group accounts for 3-8% of the total monomer. Various stresses generated by different negative electrode materials in circulation can be effectively adapted and buffered through a network formed by dynamic boric acid ester bonds and reversible fracture and combination of the boric acid ester bonds, so that the service life of the battery is generally prolonged, the working temperature range of the battery can be remarkably widened, the low-temperature discharge capacity can be remarkably increased, and the high-temperature cycle life can be prolonged.

The invention provides high-strength retarded magnesium phosphate cement as well as a preparation method and application thereof, and belongs to the technical field of magnesium phosphate cement. The high-strength retarded magnesium phosphate cement provided by the invention is prepared from the following raw materials in parts by mass: 60 to 95 parts of dead burned magnesia powder, 20 to 50 parts of phosphate, 3 to 15 parts of a composite retarder, 5 to 20 parts of an admixture, 8 to 14 parts of fly ash microspheres, 1 to 2 parts of carbon nanotubes, 1 to 5 parts of carbon fibers and 5 to 30 parts of water, the composite retarder comprises sodium tripolyphosphate, zinc acetate, EDTA (Ethylene Diamine Tetraacetic Acid) disodium and polyacrylic acid; the admixture comprises phosphorus slag powder and silica fume. The result of the embodiment shows that the setting time of the high-strength delayed-setting magnesium phosphate cement provided by the invention is controllable between dozens of minutes and dozens of hours, meanwhile, the compressive strength of the magnesium phosphate cement 28d is greater than 90MPa, and the magnesium phosphate cement has excellent mechanical properties.

The invention provides a polyacrylic acid inverse emulsion thickener and a preparation method thereof. The polyacrylic inverse emulsion thickener is prepared from the following components in parts by mass: 1 to 10 parts of modified attapulgite, 0.1 to 5 parts of hyperbranched acrylate, 30 to 60 parts of acrylic acid, 1 to 5 parts of a hydrophobic long-chain acrylate monomer, 5 to 20 parts of solvent oil, 0.5 to 5 parts of an emulsifier, 0.01 to 1 part of an initiator and 0.5 to 2.5 parts of a phase inversion agent. The preparation method comprises the following steps: firstly, introducing an isocyanate chain segment and a double-bond active group to the surface of acid-activated attapulgite to improve dispersity and reaction activity; then trimethylolpropane is used as a core, hyperbranched acrylate with multiple double bonds and a hyperbranched structure is constructed, and then the polyacrylic acid inverse emulsion thickener is prepared through an inverse emulsion method. Through the synergistic effect of the hyperbranched acrylate, the modified attapulgite and the hydrophobic long-chain monomer, the thickening performance, the electrolyte resistance and the long-term stability are remarkably improved.

The invention discloses a preparation method of a metal organic framework modified fluorine-free super-amphiphobic coating, and belongs to the technical field of super-amphiphobic coatings. According to the technical scheme, the method comprises the steps of preparation and modification of a metal organic framework and formation of a fluoride-free super-amphiphobic coating. Adding a metal oxide and nano silicon dioxide particles into a polyacrylic acid solution to form spherical particles; enabling the spherical particles to react with imidazole ligands to obtain metal organic framework particles with porous spherical structures, and wrapping nano silicon dioxide particles in the metal organic framework particles; modifying the metal organic framework particles by using a silane coupling agent; the preparation method comprises the following steps: firstly, attaching modified metal organic framework particles to the surface of a metal matrix, then attaching fluorine-free alkyl silane to the surface of the metal matrix, and heating and curing to obtain the fluorine-free super-amphiphobic coating. The fluorine-free super-amphiphobic coating is applied to the aspect of a metal surface super-amphiphobic coating, and the problems that an existing fluorine-free super-amphiphobic coating is poor in oleophobic and hydrophobic performance and poor in durability are solved.

The invention discloses an adhesive hydrogel for oral periodontal tissue regeneration and a preparation method thereof, gelatin and polyacrylic acid are used as main raw materials, and a photo-crosslinking method is used as a basis to prepare the adhesive hydrogel; the adhesive hydrogel has good tissue adhesion, can be tightly adhered to wet soft and hard tissue surfaces, and overcomes the defect that the oral periodontal filling material is difficult to fix clinically at present. The adhesive hydrogel has high porosity after completely absorbing water and swelling, and pores in the surface and inside of the adhesive hydrogel are communicated with each other, so that the adhesive hydrogel can provide more space for growth of oral periodontal tissues, and is suitable for ingrowth of cells and regeneration of the oral periodontal tissues.

The invention discloses a preparation method and application of a ceramic glaze layer protecting and repairing material, and belongs to the technical field of cultural relic protection. The preparation method comprises preparation of a core-shell self-repairing nanocapsule, and the preparation of the core-shell self-repairing nanocapsule comprises the following steps: reacting a calcium chloride solution with a sodium hydroxide solution, then adding sodium polyacrylate and nano ZnO, and carrying out dispersion, centrifugation, washing and other operations to prepare the nano Ca (OH) 2-ZnO composite material. The nano Ca (OH) 2-ZnO composite material of the core-shell self-repairing nanocapsule can be rapidly released through the 3.5 nm aperture of the mesoporous SiO2 shell, glaze layer cracks are physically filled and react with CO2 in air to generate CaCO3 crystals, crack plugging is achieved, meanwhile, dynamic disulfide bonds of a PU layer are broken and recombined under stress stimulation, a crack interface is repaired through chemical bonding, and the performance of the core-shell self-repairing nanocapsule is improved. The 24-hour crack repair rate is greater than or equal to 96%, and the limitation of'one-time repair 'of a traditional material is solved.

The invention discloses a modified thermal insulation coating and a preparation method and application thereof, and belongs to the field of building energy-saving materials. One modified compound is a thermo-sensitive polyelectrolyte layer-by-layer self-assembled alumina microsphere formed by alternately depositing polyethyleneimine and polyacrylic acid through electrostatic interaction, and the polyelectrolyte layer can dynamically swell or shrink along with the temperature to adjust the heat conductivity coefficient; and the other is magnesium silicate nanofiber coated with silicon dioxide and then grafted with fluorosilane, the hydrophobicity is improved by utilizing the low surface energy of the fluorosilane, and meanwhile, the binding force with a polymer interface is enhanced. The coating further comprises fumed silica, a dispersing agent, a defoaming agent and other auxiliaries. The preparation method comprises the following steps: sequentially adding the components into a high-speed dispersion machine, mixing, adjusting the viscosity, filtering and packaging. The coating has the advantages of intelligent temperature-sensitive adjustment, low heat conductivity, strong adhesion and weather resistance; the material is suitable for long-acting heat preservation in the fields of buildings, industrial equipment and cold chains.

The invention relates to the technical field of temporary plugging agents, and discloses a water-soluble temporary plugging agent for oil well fracturing and a preparation method thereof. According to the prepared water-soluble temporary plugging agent, sodium lignin sulfonate / graphene oxide serves as a core, then the surface of the core layer is coated with a polyacrylic acid-polyacrylamide copolymer to form a first shell layer, and then the surface of the first shell layer is coated with acrylate modified chitosan to form a second shell layer; the temporary plugging agent is applied to oil well fracturing, not only has excellent plugging performance, dissolving performance and anti-shearing performance, but also can improve the transportation capacity of the temporary plugging agent in the oil well fracturing process.

The invention relates to the field of ardealite treatment, in particular to a compound preparation for curing fluorine and phosphorus in ardealite and application thereof.The compound preparation is prepared from, by mass, 20-40 parts of modified clay minerals, 10-15 parts of clay minerals, 1-2 parts of coagulant, 0.1-0.6 part of auxiliaries and 180-200 parts of deionized water. The modified clay minerals are hydroxyl iron modified mixed clay minerals, the mixed clay minerals are obtained by mixing maleic anhydride grafted clay minerals and polyacrylic acid-sodium acrylate grafted clay minerals, and the composite preparation provided by the invention can greatly increase the removal rate of fluorine and phosphorus in phosphogypsum; wherein the modified clay mineral and the clay mineral have a synergistic effect, a three-dimensional structure with large porosity, large specific surface area and large surface active group content can be formed in a system, phosphorus and fluorine in phosphogypsum can be adsorbed to the maximum extent, and the modified clay mineral and the clay mineral have a wide application prospect.

The invention belongs to the technical field of biomedical materials, and particularly relates to preparation of a hydrogel ultrasonic coupling patch for long-term stable continuous monitoring. According to the patch, an interpenetrating double-network structure system is formed by an alginate component and a polyacrylic acid component through intermolecular interaction, and the patch has excellent adhesion performance and mechanical performance. Compared with the prior art, by optimizing the components and the preparation process, the obtained hydrogel patch has the following advantages that the excellent acoustic impedance matching characteristic is achieved, and high-fidelity transmission of ultrasonic signals is ensured; the tissue adhesion is strong, and long-term stable attachment can be realized; good mechanical stability and durability are achieved, and the method is suitable for continuous monitoring application. The product effectively solves the technical problems that the traditional liquid coupling agent is easy to lose, the solid coupling patch is insufficient in adhesion and the like, and has important application value in the fields of medical ultrasonic diagnosis and long-term monitoring.

The invention provides a preparation method of a mineralized collagen scaffold material with a bionic structure, and belongs to the field of biomedical engineering.The preparation method comprises the steps that an amorphous calcium phosphate solution stabilized by polyacrylic acid is prepared, and the molar ratio of Ca to P in the amorphous calcium phosphate solution is 1.67: 1; preparing a collagen solution containing noradrenaline; carrying out isoelectric focusing treatment on the collagen solution under a constant voltage to form a dense membrane, and stretching the dense membrane to generate 120-200% deformation, so as to obtain a collagen membrane with a bionic structure; and soaking the collagen membrane in the amorphous calcium phosphate solution, and then performing freeze drying to obtain the noradrenaline-mineralized collagen scaffold material. The mineralized collagen scaffold material prepared by the method has excellent biocompatibility, osteogenesis inductivity and sufficient mechanical strength, can effectively promote bone tissue defect repair, and has a good application prospect in the field of bone tissue engineering. The invention further provides the mineralized collagen scaffold material with the bionic structure and application of the mineralized collagen scaffold material.

The invention discloses a slow-release phosphorus removal material and a preparation method and application thereof, and belongs to the technical field of sewage treatment, the slow-release phosphorus removal material comprises the following components by mass: 40-55 parts of calcium peroxide, 25-35 parts of a binder, 2-5 parts of bentonite, 5-20 parts of calcined oyster shell powder, and 10-25 parts of iron-loaded modified red soil; the binder is prepared from Portland cement, polyacrylic acid and hydroxypropyl methyl cellulose ether according to the mass ratio of 1: (0.2 to 1): (0.1 to 0.8). Under the synergistic effect of the calcium peroxide, the binder, the bentonite, the calcined oyster shell powder and the iron-loaded modified red soil, the filter material can be used as a phosphorus removal filter material, can be directly used as a filter material of a filter tank, a wetland and the like independently or in combination with quartz sand, gravel and other filter bed filter materials, can permanently remove phosphorus in surface water, can also be directly put into rivers, lakes and ponds, and can be used as a filter material of a filter tank, a wetland and the like. In addition, the preparation cost is low, and wide application prospects are achieved.

The invention provides a diaphragm and a preparation method thereof, and a lithium ion battery, the diaphragm comprises a base membrane, a composite ceramic coating and an interface layer, the composite ceramic coating contains inorganic ceramic particles and organic microcapsule particles, the organic microcapsule particles comprise a core material with a melting point range of 55-65 DEG C and a polymer shell coating the surface of the core material, and the polymer shell is coated on the surface of the core material. The polymer shell is selected from at least one of polyurethane, polyurea, polyamide and polycarbonate, the interface layer is formed by depositing an interface modification polymer on the surface of the composite ceramic coating, and the interface modification polymer is selected from at least one of polycatechol derivatives, polyaniline, polyvinyl pyridine, polyacrylic acid and polyacrylamide. The core material in the organic microcapsule particles is melted when heated to trigger hole closing at the initial stage of thermal runaway at 60-80 DEG C, the hole closing rate can reach 92%, the hole closing response time is shortened by 30%, and the porous structure of the interface layer can enhance the liquid absorption rate.

The invention relates to the technical field of lithium batteries, in particular to a preparation method of a high-temperature-resistant lithium battery cell. The invention discloses a preparation method of a high-temperature-resistant lithium battery cell, which is characterized in that through full-chain synergy of modification of positive and negative electrode materials, electrolyte optimization and structural design, a positive electrode adopts nickel cobalt lithium aluminate with a core-shell structure, and a metal organic framework coordination layer, polyaniline-polyacrylic acid multilayer coating and foam aluminum foil 3D printing coating are combined. The negative electrode takes silicon-carbon core-shell particles as a substrate, and breaks through the expansion bottleneck of a silicon-based negative electrode through metal organic framework confinement coating, polyaniline-polyacrylic acid cross-linked network modification and foam copper foil functionalization. The electrolyte adopts a film-forming additive and lithium difluorophosphate to form a stable SEI film, and internal resistance increase at high temperature is inhibited. The aramid fiber coating diaphragm and the aluminum alloy shell are matched, so that the thermal stability of the battery cell is remarkably improved, the battery cell can stably work in a wide temperature range environment, high energy density and long cycle life are comprehensively realized, and key support is provided for a long-endurance and high-safety battery.

The invention relates to the technical field of lithium ion batteries, and discloses a preparation method of silicon-carbon negative electrode slurry, the silicon-carbon negative electrode slurry and a lithium ion battery. The silicon-carbon negative electrode slurry comprises the following components: a silicon-based material, a graphite material, a carbon black conductive agent, a single-walled carbon nanotube conductive slurry, a sodium carboxymethyl cellulose binder, a polyacrylic acid binder, a styrene butadiene rubber binder, N-methyl pyrrolidone and deionized water. The silicon-carbon negative electrode slurry is prepared by adopting a dry process and a method of adding the binder step by step, so that the uniformity of the silicon-carbon negative electrode slurry is ensured, the expansion of the silicon-carbon negative electrode material is inhibited, and the cycle performance of the prepared lithium ion battery is finally improved. The silicon-based negative electrode paste has the following beneficial effects that the prepared silicon-based negative electrode paste is good in stability, and the single-walled carbon nanotube conductive paste, the sodium carboxymethyl cellulose binder, the polyacrylic acid binder and the styrene butadiene rubber binder form a multi-stage synergistic effect through complementary conductive, binding, dispersing and mechanical properties.

The invention relates to the technical field of batteries, in particular to a diaphragm, a preparation method thereof and a lithium ion battery. The diaphragm comprises a base membrane and a coating located on the surface of at least one side of the base membrane, the base membrane comprises a polyvinyl alcohol membrane and first particles dispersed in the polyvinyl alcohol membrane, and the first particles comprise at least one of boehmite, aluminum oxide and zirconium oxide; the coating comprises second particles and a first binder, and the second particles comprise at least one of attapulgite, zeolite, sepiolite, montmorillonite and diatomite; the first binder comprises at least one of polyacrylonitrile, polyacrylic acid, an acrylic acid-acrylonitrile copolymer, an acrylic acid-acrylamide copolymer, an acrylonitrile-acrylamide copolymer, an acrylic acid-acrylonitrile-acrylate copolymer, an acrylic acid-acrylonitrile-acrylamide copolymer and an acrylic acid-acrylonitrile-acrylate copolymer. The diaphragm disclosed by the invention is good in thermal stability and liquid absorbency; comprising the diaphragm disclosed by the invention can improve lithium dendrites and cycle performance.

The invention provides a green compound scale inhibitor for geothermal fluid. The compound scale inhibitor comprises modified polyaspartic acid, high-hydrolysis polymaleic anhydride, polyepoxysuccinic acid and polyacrylic acid. According to the environment-friendly compound scale inhibitor for the geothermal fluid, the modified polyaspartic acid, the high-hydrolysis polymaleic anhydride, the polyepoxysuccinic acid and the polyacrylic acid are compounded, a good synergistic effect is achieved, scale inhibition is achieved through chelation solubilization and lattice distortion, the scale inhibition advantage in actual geothermal water is obvious, and the environment-friendly compound scale inhibitor has a good actual popularization value.

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 relates to a super-flexible supercapacitor with a multi-layer seamless interlocking interface and a preparation method of the super-flexible supercapacitor. The super-flexible supercapacitor takes a carbon nanotube or a composite film thereof as an electrode; and polyanion gel (polyacrylamide / polyacrylic acid / poly (3-sulfonic acid propyl methyl acrylic acid potassium salt) and polycation gel (polyacrylamide / polyacrylic acid / poly (methacryloyloxyethyl trimethyl ammonium chloride) are used as the double-layer heterogeneous electrolyte. A covalent connection electrode / electrolyte interface is constructed through anchoring interface polymerization, and double-layer gel electrolyte with electrostatic attraction and mutual entanglement is constructed through in-situ polymerization, so that the super-flexible supercapacitor with a multi-layer seamless interlocking interface is realized. Compared with the prior art, the super capacitor has super-strong interface toughness and interface adhesion, can resist mechanical deformation including bending, folding, twisting, winding, extruding, knotting and the like, the capacity retention ratio is greater than 95% after the super capacitor is folded for hundreds of thousands of times, and the capacity retention ratio is greater than 89% after the super capacitor is circularly charged and discharged for hundreds of thousands of times.