180 results about "Sodium Acrylate" patented technology

The invention relates to the technical field of medical dressings, in particular to a perianal drug dressing of a multi-layer flow guide composite fabric and a preparation method and application of the perianal drug dressing of the multi-layer flow guide composite fabric. The perianal drug dressing is of a four-layer structure, a wet tissue adhesion layer is made of polydopamine modified chitosan / oxidized hyaluronic acid hydrogel, and wet-state adhesion is achieved; the drug sustained-release layer is used for dispersing mesoporous silica loaded with ciprofloxacin hydrochloride / defensin and chitosan microspheres loaded with epidermal growth factors / lonicera japonica into a polycaprolactone fiber membrane to achieve synergistic antibacterial and healing promotion; the directional flow guide layer is of a gradient wettability sandwich structure with a bionic micro-channel, and one-way rapid drainage can be achieved; the high-absorption outer layer is carboxymethyl cellulose / sodium polyacrylate composite sponge, liquid is locked efficiently, the wound surface is kept dry and comfortable, the clinical problem in perianal infection wound treatment can be effectively solved, and the treatment effect and the patient comfort are remarkably improved.

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 relates to the technical field of polyurethane impermeable materials, and particularly discloses a high-molecular impermeable material with oil resistance and impermeability as well as a preparation method and application thereof, and the high-molecular impermeable material comprises the following components in parts by weight: 120 parts of a polyurethane prepolymer, 20-45 parts of a diluent, 10-30 parts of an auxiliary agent, 15-20 parts of a micro-powder filler, 10-15 parts of carboxymethyl cellulose and 3-8 parts of dibasic hydrogen phosphate; wherein the polyurethane prepolymer is prepared from a diisocyanate compound and polyether polyol through a reaction; wherein the micro powder filler is a mixture of sodium acrylate hydrogel micro powder and sodium alginate hydrogel micro powder; wherein the dibasic hydrogen phosphate is monovalent ion salt. The high-molecular anti-seepage material has excellent anti-seepage performance in an oil storage environment, has relatively high adhesive force, and can be suitable for grouting in a humid environment; and water resistance and oil resistance of an underground water-sealed stone cavern oil depot environment can be better realized.

The invention discloses a multi-site intelligent response type CO2 gas channeling prevention gel and a preparation method, and belongs to the field of chemical oil displacement, and the preparation method comprises the following steps: taking a carbon dioxide response type monomer, acrylamide and sodium acrylate as monomers, and adopting water-soluble free radical polymerization to prepare a CO2 response type copolymer; the CO2 response type copolymer, a cross-linking agent, a stabilizer, a retarder and formation water are prepared into a polymer cross-linking agent mixed solution, a cross-linking reaction is carried out under the conditions of formation temperature and mineralization degree, and the multi-site intelligent response type CO2 gas channeling prevention gel is obtained. The gel effectively solves the problems that a traditional anti-channeling agent is poor in injectivity in a low-permeability and ultra-low-permeability oil reservoir and cannot achieve deep channeling sealing, CO2 gas channeling fractured channels can be effectively blocked, the carbon dioxide oil displacement effect is remarkably improved, and key technical support is provided for large-scale application of carbon dioxide displacement.

The invention relates to the technical field of functional coatings of medical instruments, in particular to a temperature-sensitive response type sodium polyacrylate catheter leakage-proof coating, a preparation method and application thereof, and the coating is of a three-layer composite structure. And the bottom bonding layer adopts a polydopamine modified silane coupling agent system, contains silver nanoparticles, has the thickness of 5-15 microns, and ensures strong bonding and antibiosis of the substrate. The middle functional layer is a three-dimensional cross-linking degree gradient interpenetrating network polymer, is composed of a plurality of monomers and nano materials, and is 50-100 [mu] m in thickness, the cross-linking degree of the middle functional layer is gradually increased from inside to outside, gradient transition of mechanical properties is achieved, the outer protective layer is composed of a copolymer, is 3-8 [mu] m in thickness, and provides excellent anti-fouling and biocompatibility. The coating is endowed with strong adhesive force, gradient mechanical property and surface stability, the sodium polyacrylate component absorbs water and expands in urine to form sealing, and the expansion degree of the sodium polyacrylate component is regulated and controlled by the pH value and ionic strength of the urine.

The invention discloses a solid ultrasonic gel patch as well as a preparation method and application thereof, and belongs to the technical field of medical chemistry. The solid ultrasonic gel patch is prepared from an acrylamide monomer, polyvinyl alcohol, sodium polyacrylate, sodium carboxymethyl cellulose, nano silicon dioxide, propylene glycol, glycerol, acrylic acid, triethanolamine, a cross-linking agent, an initiator and water according to a specific ratio. The prepared solid ultrasonic gel patch is highly matched with human soft tissue in acoustic impedance (about 1.62-1.63 * 10 < 6 > Pa.s / m), low in acoustic attenuation coefficient (less than or equal to 0.034 dB / (cm.MHz)), moderate in skin adhesion, excellent in flexibility and moisture retention, capable of solving the problems that a traditional ultrasonic coupling agent is inconvenient to use, easy to dry, poor in experience and the like, and suitable for acoustic wave conduction in ultrasonic examination and treatment.

The invention discloses a collateral-dredging and pain-relieving gel plaster and a preparation method thereof. The collateral dredging and pain relieving ointment is prepared from the following raw materials in percentage by mass: camphor, borneol, menthol, absolute ethyl alcohol, collateral dredging and pain relieving volatile oil, a surfactant, collateral dredging and pain relieving extract, tartaric acid, purified water, partially neutralized sodium polyacrylate, a cross-linking agent, an adhesive, glycerol, EDTA-2Na (Ethylene Diamine Tetraacetic Acid) and a filling agent. The plaster disclosed by the invention is high in application comfort, breathable, free from aching feeling after being uncovered, free from residue on skin and not sticky when being in contact with sweat; the use of an organic solvent is basically avoided in the production process; the matrix contains components such as water and glycerol, has the effects of moistening the skin and promoting skin hydration, and is free of irritation and sensitization to the skin; repeated uncovering and pasting can be achieved, and the viscosity influence is small.

The invention relates to preparation of hydrolyzed keratin capable of maintaining hair and application of the hydrolyzed keratin in shampoo. The shampoo capable of maintaining the hair and the keratin is prepared by compounding a surfactant, a modified silicone oil graft polymer, the hydrolyzed keratin and polydimethylsiloxane. According to the modified silicone oil graft polymer, hydrophilic sodium acrylate and hydrophobic N-vinyl pyrrolidone and acrylic ester are introduced into vinyl silicone oil, and N-vinyl pyrrolidone and acrylic ester can be adsorbed on the inner side of the hair surface; sodium acrylate with hydrophilicity is located on the outer side of the surface of the hair due to electrostatic repulsion between the negatively-charged hair and generates hydration with water molecules on the surface of the hair to form a water shell protection layer, so that the sodium acrylate can be more uniformly distributed on the hair to form an effective protection film, and during washing, the water washing property is greatly enhanced by the hydrophilic part of the sodium acrylate; non-specific deposition and residues in a scalp area are remarkably reduced, and the washed hair can be moisturized and lubricated.

The application relates to a preparation method of an iron-manganese composite-based porous polyurethane cement sponge filler, and belongs to the technical field of sponge fillers. The method solves the defects of the existing sulfur autotrophic denitrification technology. The required proportions of ordinary Portland cement, anhydrous manganese chloride (MnCl2) and ferrous chloride tetrahydrate (FeCl2.4H2O) are weighed, mixed and stirred uniformly, a water phase solution containing a bonding agent polyvinyl alcohol (PVA) and a dispersant sodium polyacrylate (SPAN) is prepared, solid raw materials and the water phase solution are mixed, polyurethane sponge is added into the mixture and stirred, freezing and shaping are carried out, freezing drying is carried out, steam curing is carried out, then, after being cooled to room temperature, the material is washed with deionized water, and finally, drying treatment is carried out. The iron-manganese composite-based porous polyurethane cement sponge filler has a large specific surface area, porosity, rough surface and good hydrophilicity, and has high phosphorus adsorption and sulfur fixation capacity, thereby exhibiting excellent environmental purification performance and excellent microbial adhesion.

The utility model discloses a fresh-keeping device for agricultural product transportation, and relates to the technical field of agricultural product transportation, the fresh-keeping device comprises a box body, a sealing cover, a phase change material layer, a humidity adjusting system, a buffer structure and an intelligent monitoring module, the box body is of a double-layer heat insulation structure, the outer layer is an EPS heat insulation layer, the inner layer is a PE layer, and the middle is filled with phase change materials; the humidity adjusting system comprises a water absorption pad located at the bottom of the box body and a breathable film located at the top of the sealing cover, the buffering structure is a supporting frame, and the surface of the buffering structure is covered with a nano-silver antibacterial coating. Through the cooperation of the double-layer heat insulation structure (EPS + PE) and the phase change material (the phase change temperature of 0-10 DEG C), the temperature in the box is kept stable in a passive mode, the respiration and microbial activity of agricultural products are inhibited, and compared with traditional normal-temperature packaging, the fresh-keeping period is prolonged by 30%-50% (for example, the fresh-keeping period of strawberries is prolonged from 3 days to 7 days). The water absorption pad (sodium polyacrylate) absorbs condensate water, redundant water vapor is discharged in combination with the BOPP anti-fog breathable film (the micropores are 0.1-1 micron), and the humidity is accurately controlled to be 85%-95%.

The invention relates to a scale inhibitor for an industrial circulating water system and an intelligent adding method thereof, and belongs to the technical field of industrial water treatment.The scale inhibitor is composed of a component A and a component B. The component A comprises, by mass, 5-15% of sodium molybdate, 5-15% of sodium tungstate, 15-25% of sodium polyacrylate, 5-15% of sodium borate, 15-25% of zinc sulfate, 5-10% of zinc chloride, 3-8% of sodium silicate and 2-6% of benzotriazole; the component B is prepared from the following components in percentage by mass: 15 to 25 percent of HEDP, 15 to 25 percent of PBTC, 35 to 50 percent of AA / AMPS copolymer and 15 to 25 percent of deionized water. According to the scale inhibitor for the industrial circulating water system and the intelligent adding method of the scale inhibitor, a phosphorus-free and chromium-free environment-friendly formula with sodium molybdate and sodium tungstate as cores is adopted, and phosphorus pollution and heavy metal risks are fundamentally eradicated; according to the formula, through cooperation of multiple components, a layer of compact and stable composite passivation film with self-repairing capacity can be formed on the metal surface in severe water with high chloride ions, and the corrosion inhibition rate gt of carbon steel is achieved; the copper corrosion inhibition rate is gt; and 98%.

The invention discloses a sodium polyacrylate and attapulgite dual-network hemostatic hydrogel and a preparation method thereof. The preparation method comprises the following steps: firstly, dispersing attapulgite in ethanol to form an attapulgite dispersion liquid; then modifying the surface of the attapulgite by utilizing a silane coupling agent; and dissolving a certain amount of surfactant, sodium acrylate and initiator, adding the modified attapulgite and cross-linking agent to obtain a water phase, slowly adding the oil phase material, and carrying out high-speed shearing and heating polymerization to obtain the double-network hydrogel with the hemostatic effect. Compared with a single-network hydrogel, the double-network hydrogel has the advantages that the strain linear viscoelastic area is wider, the deformation resistance is better, the hemostatic property and the mechanical strength are synchronously improved, and the organic-inorganic hybrid hydrogel has a good application prospect in the fields of hemostasis and wound healing and has a wide application prospect in the fields of hemostasis and wound healing. The device is especially suitable for acute wound hemostasis and medical scenes needing certain mechanical support, and has high practical application value.

The invention discloses a polycarbonate composition as well as a preparation method and application thereof, and relates to the technical field of plastics. The polycarbonate composition provided by the invention comprises the following components in parts by weight: 44-85 parts of polycarbonate; 11 to 21 parts of surlyn resin A; 4 to 15 parts of surlyn resin B; 8 to 32 parts of glass fiber; 0.9 to 13 parts of a toughening agent; 4-11 parts of a flame retardant; the Surlyn resin A is an ethylene-(methyl) sodium acrylate ionic polymer, and the Surlyn resin B is an ethylene-(methyl) zinc acrylate ionic polymer. The polycarbonate composition provided by the invention has excellent weld line strength, flame retardant property and tensile strength.

The application provides an antimony-based composite negative electrode material and a preparation method and application thereof, and relates to the technical field of new energy batteries.The preparation method provided by the application comprises the following steps: mixing antimony metal powder with amorphous carbon, ball-milling, drying and calcining to obtain an antimony-based intermediate; performing acidification treatment on the surface of carbon nanotubes to obtain acidified carbon nanotubes, dispersing the acidified carbon nanotubes in an organic sodium modified solution, stirring, filtering, drying to obtain modified carbon nanotubes; mixing and dispersing the antimony-based intermediate, sodium polyacrylate and the modified carbon nanotubes to obtain a suspension, and then performing spray drying to obtain the antimony-based composite negative electrode material.The preparation method provided by the application can improve the problem of performance decline caused by the capacity attenuation of the antimony metal due to the huge volume expansion in the process of deintercalating sodium ions, and effectively improves the electrochemical performance of the antimony-based negative electrode material.

This invention discloses an additive with chloride-fixing and toughening functions, its preparation method, and its application. The additive uses tricalcium aluminate and sodium acrylate as main raw materials. Under alkaline conditions, a wet grinding process hydrates tricalcium aluminate to form a calcium-aluminum layered bimetallic hydroxide structure, allowing acrylate atoms to intercalate into the interlayer, forming a stable organic-inorganic composite structure. When applied to cement-based materials, the layered structure reacts with chloride ions to generate chloride-containing hydration products, achieving chloride ion solidification. Simultaneously, the organic components in the composite structure undergo polymerization under the action of an initiator, forming a polymer network in the cement matrix, thereby improving the material's toughness. When added to cement-based materials at 1-5% of the cementitious material mass, the 28-day flexural strength can be increased by 38%-113%, and the 28-day chloride ion solidification rate can be increased by 17%-23%, while maintaining good workability. This invention achieves the simultaneous introduction of chloride ion solidification and material toughening functions through a single additive, simplifying the material system. It is suitable for cement-based materials containing endogenous chloride ions and has good engineering application prospects.

The application discloses an environment-friendly partially neutralized sodium polyacrylate production process and relates to the technical field of sodium polyacrylate preparation. The process comprises the following raw materials in parts by weight: 20-25 parts of acrylic acid, 85-95 parts of deionized water, 7.8-8.4 parts of sodium hydroxide, 0.25-0.30 parts of a functional monomer, 0.08-0.1 parts of a crosslinking agent, 0.5-0.7 parts of a cosolvent, 0.6-0.75 parts of a surface crosslinking agent. The environment-friendly partially neutralized sodium polyacrylate is obtained by the UV light catalytic polymerization reaction of the partially neutralized sodium polyacrylate and the functional monomer in a solution, and then by the stirring reaction of the solution after the spraying of the surface crosslinking agent solution. The synthesized functional monomer comprises a terminal carbon-carbon double bond, attapulgite and guar gum. The environment-friendly partially neutralized sodium polyacrylate gel has good gel strength, high salt resistance and excellent elasticity, and the production process has high environmental protection, so it is worth being popularized and used.

The invention discloses a shear-resistant, high-drag-reducing, high-viscosity slickwater drag reducing agent and a preparation method therefor. The drag reducing agent is polymerized from acrylamide, sodium acrylate, a sulfonate ion-containing hydrophobic monomer, a hydrophobic unit microblock regulator, a molecular weight modifier, and a composite initiator. Through the special sulfonate ion-containing hydrophobic monomer, the hydrophobic unit microblock regulator matched with a hydrophobic monomer and the control of a polymer molecular weight, the solubility and viscosity-increasing performances of the polymer can be significantly improved, the shear-resistant and degradation-resistant performance of the drag reducing agent is improved, with excellent sand carrying performance and drag reducing performance, and the shortcomings of existing slickwater drag reducing agents such as weak shear resistance, rapid decline in drag reduction rate and poor sand carrying performance are overcome, thereby meeting the special requirements of deep / ultra-deep oil and gas reservoir fracturing on fracturing fluid rheology.

The invention relates to the technical field of filtering materials, and mainly relates to an air filtering material and a preparation method thereof. The invention relates to an air filtering material, which comprises the following components: 60-70 parts by weight of wood pulp fiber; 10 to 20 parts by weight of a modified PAN nanofiber; 1-3 parts by weight of a modified PTFE emulsion; 5 to 10 parts by weight of modified PLA; 0.1 to 1 part by weight of chitosan; and 0.01 to 0.1 part by weight of sodium polyacrylate. The preparation method of the air filtering material comprises the following steps: soaking wood pulp fibers in water, and pulping; mixing the pulped wood pulp fibers, the modified PAN nanofibers, the modified PTFE emulsion, the modified PLA, chitosan and sodium polyacrylate to obtain mixed paper pulp; carrying out papermaking by utilizing the mixed paper pulp; and drying and calendering to obtain the air filtering material. The air filtering material provided by the invention also has the effects of high moisture resistance and strong antibacterial property while ensuring high filtering performance.

The application relates to a grinding aid and a preparation method and application thereof, the grinding aid comprising a to-be-treated solution and a surfactant; the to-be-treated solution contains sodium acrylate, sodium hydroxide and sodium p-toluenesulfonate; and the surfactant comprises at least one of sodium dodecyl benzene sulfonate, sodium lignosulfonate, allyl polyether, fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether and nonyl phenol polyoxyethylene ether. The specific surfactant in the grinding aid cooperates with the to-be-treated solution, synergistically improves the interface wetting performance of the material, weakens the powder aggregation phenomenon, reduces the surface energy, and further improves the dispersibility of the material and the gradation and fluidity of the material.

This invention provides a medical cold compress hydrogel bandage, relating to the biomedical field. It is a bandage roll structure, primarily comprising a bandage fabric body capable of being rolled into a roll. In its unfolded state, the bandage fabric body has a gel layer and a connector fixedly disposed on one surface, with the gel layer and connector positioned near the two ends of the bandage. The gel layer is used for direct contact with the skin during bandaging, and the connector is used to fix the bandage ends to the fabric surface of the bandage fabric body after bandaging. When the bandage fabric body is rolled into a roll, the gel layer end is located at the outer end of the roll, and the connector is located at the core of the roll. The gel layer includes component A, component B, and purified water. Component A mainly includes glycerin, sodium polyacrylate, and a self-made composite crosslinking agent, while component B mainly includes kaolin and tartaric acid. This invention ensures both the ease of use of the bandage roll and its ability to be easily unrolled and used within a relatively long shelf life.

The invention discloses a suspension resistance reducing agent and a preparation method and application thereof, and belongs to the technical field of oil exploitation. The suspension resistance reducing agent is prepared from the following components in parts by weight: 30 to 40 parts of a mixed copolymer, 1 to 2 parts of a mixed emulsifier, 50 to 60 parts of an oil phase, 0.2 to 0.4 part of nano SiO2, 0.2 to 0.4 part of graphene oxide, 0.5 to 1 part of a stabilizer, 0.5 to 1 part of a surfactant and 0.02 to 0.5 part of a capsule gel breaker. The preparation method comprises the following steps: reacting acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, sodium acrylate and a conjugated compound containing double bonds to obtain a polymer A, mixing the polymer A with a lignin sulfonate-acrylamide copolymer, and drying to obtain a mixed copolymer. Through mutual cooperation of all the components, the suspension resistance reducing agent has temperature resistance, salt resistance, stability, sand carrying, swelling prevention, discharge aiding and resistance reducing performance at the same time, and the convenience of application in a construction site is improved.

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 invention relates to the technical field of macromolecular water-absorbing materials, in particular to polyacrylic acid super absorbent resin and a preparation method thereof. The preparation method comprises the following steps: S1, adding acrylic acid into a sodium hydroxide solution to obtain a sodium acrylate solution, continuously adding acrylamide, stirring until acrylamide is completely dissolved, adding a modifier, and supplementing deionized water to obtain a pre-reaction system; s2, adding a tannic acid solution, an initiator and a cross-linking agent into the pre-reaction system, and carrying out heating polymerization reaction for 3-4 hours in a nitrogen atmosphere to obtain resin gel; and S3, crushing the resin gel, and drying the crushed resin gel at 65-70 DEG C for 6-8 h to obtain the polyacrylic acid super absorbent resin.

The invention discloses an electroplating disqualified cadmium layer stripping solution, a preparation method and a use method, and the electroplating disqualified cadmium layer stripping solution comprises 6-8 parts of sodium phytate, 1-3 parts of sodium nitrilotriacetate, 2-4 parts of borate, 5-10 parts of sodium bromate, 1-2 parts of sodium alkyl naphthalene sulfonate, 1-2 parts of glucoside, 5-8 parts of sodium nitrate, 3-5 parts of ammonia water, 2-4 parts of triol ethylamine, 4-6 parts of 1-hydroxyethylidene-1, 1-diphosphonic acid and 8-12 parts of ammonium persulfate. The total amount of the purified water is 100 parts, and the total amount of the purified water is 100 parts. The pH value of the deplating agent solution is alkaline, the problem of hydrogen evolution of a hydrogen sensitive material is solved, the risk of hydrogen embrittlement is avoided, and hydrogen removal is not needed after steel and iron materials are deplated; cadmium ion heavy metal pollution and sewage treatment difficulty exist, the stripped cadmium ions automatically generate precipitates, recycling is facilitated, and the sewage treatment difficulty is reduced; the metal deplating liquid is convenient to use and simple to operate, only unqualified products need to be put into the deplating liquid in a room-temperature environment, after a certain time, after a plating layer is completely removed, the unqualified products are washed with water, and a metal base material is not damaged.

The invention relates to the technical field of oil-gas field development, in particular to a mechanical property modifier, a preparation method and application. The invention relates to a mechanical property modifier. The mechanical property modifier is prepared from the following raw materials: serpentine, silica sol, allyl polyglycol ether polycarboxylic acid and sodium polyacrylate. The invention provides a mechanical modifier preparation method, which comprises: (1) crushing serpentine, and carrying out acid washing to obtain serpentine wet powder; (2) carrying out a reaction I on a mixture I containing serpentine wet powder and silica sol to obtain modified serpentine; and (3) carrying out a reaction II on a mixture II containing the modified serpentine, the allyl polyglycol ether polycarboxylic acid solution and the sodium polyacrylate solution to obtain the mechanical property modifier. The mechanical property modifier provided by the invention can obviously improve and enhance the mechanical property of high-temperature oil well set cement, so that the high-temperature oil well set cement has the characteristics of high strength and high toughness.

The application discloses a low-molecular anti-salt thickening agent and a preparation method thereof, and belongs to the technical field of oil and gas yield increase. The raw materials of the low-molecular anti-salt thickening agent disclosed by the application include acrylamide hydrophilic monomers, sodium acrylate hydrophilic monomers, salt-resistant monomers containing sulfonic acid groups, associated monomers containing amphiphilic groups, nano cross-linking agents with two-dimensional planar structures, composite initiators, molecular weight regulators and water; the mass ratio of the acrylamide hydrophilic monomers, the sodium acrylate hydrophilic monomers, the salt-resistant monomers containing sulfonic acid groups, the associated monomers containing amphiphilic groups and the nano cross-linking agents with two-dimensional planar structures is 1: (0.12-0.2): (0.025-0.2): (0.004-0.02): (0.002-0.004). The low-molecular anti-salt thickening agent disclosed by the application greatly improves the salt resistance and temperature resistance and shear resistance of the low-molecular anti-salt thickening agent.

This invention discloses a dual-network temperature-sensitive nanohydrogel for fire extinguishing and reignition prevention in lithium iron phosphate batteries, and its preparation method, relating to the field of battery fire prevention and extinguishing technology. The method includes: firstly, adding phytic acid solution to an ammonium polyphosphate suspension for reaction; then, centrifuging, washing, and vacuum drying the resulting reaction solution to obtain an ammonium polyphosphate-phytic acid polymer; next, adding N,N′-methylenebisacrylamide and azobisisobutyronitrile to an N-isopropylacrylamide solution, reacting the resulting mixture to form a transparent gel, and post-processing to obtain powdered polyN-isopropylacrylamide; adding nano-silica, the ammonium polyphosphate-phytic acid polymer, and polyN-isopropylacrylamide to a methylcellulose solution to obtain a mixed solution; finally, adding sodium polyacrylate and magnesium chloride hexahydrate, and stirring at room temperature to obtain the final product. The dual-network temperature-sensitive nanohydrogel prepared by this invention exhibits high thermal stability.

The invention discloses a conductive cement material and a preparation method thereof, preparation raw materials of the conductive cement material comprise a cement base material and a modification auxiliary agent, the modification auxiliary agent comprises a functional polymer, a polymer network modifier and an initiator, the functional polymer is a mixture of methacryloyloxyethyl trimethyl ammonium chloride and sodium acrylate, and the initiator is a mixture of methacryloyloxyethyl trimethyl ammonium chloride and sodium acrylate. The functional polymer forms a polymer network under the action of an initiator and is suitable for being connected with a hydration product of cement, and the polymer network modifier is suitable for graft copolymerization with the functional polymer. The functional polymer and the initiator are introduced into the cement base material, the functional polymer is self-polymerized to form a three-dimensional network structure with good ionic conductivity by means of cement hydration heat release, bonding is formed between the three-dimensional network structure and cement base material hydration product C-S-H gel, and by means of the synergistic effect of the cement base body and a polymer network, the ionic conductivity of the cement base material is improved. And the toughness is improved while the high ionic conductivity of the cement-based material is achieved.

The application provides a hydrophobic associating polymer and a preparation method thereof, and a polymer reinforced foam system, the hydrophobic associating polymer is copolymerized by a hydrophobic monomer and acrylamide and sodium acrylate; wherein the hydrophobic monomer is obtained by quaternary ammonium reaction of methacrylamidopropyl dimethyl amine and alkyl bromide with a molar ratio of 1:1-1.15. The foam system of the application has good foaming property and foam stability under strong oil wet conditions.

The invention belongs to the technical field of grouting materials, and particularly relates to an anti-aging hydrogel composite grouting material for water gushing plugging and a preparation method of the anti-aging hydrogel composite grouting material. The composite grouting material comprises the following components in parts by mass: anti-aging hydrogel, and the anti-aging hydrogel is prepared from the following raw materials in parts by mass: 60-80 parts of a poly (N-isopropylacrylamide) solution, 20-40 parts of a sodium acrylate solution, 1 part of ammonium persulfate, 1 part of N, N-dimethylformamide, 1 part of a cross-linking agent, 1 part of a cross-linking agent, 1 part of a cross-linking agent, 1 part of a cross-linking agent, and 1 part of a cross-linking agent. The concrete is prepared from, by weight, 1 part of N, N-methylene bisacrylamide, 0.775 part of tetramethylethylenediamine, 1-3 parts of composite cement, 3 parts of a surface enhancer and 1 part of a water guide agent. The composite cement comprises the following components: sulphoaluminate cement clinker and gypsum. According to the invention, the aging resistance of the hydrogel for water burst plugging can be improved. In addition, the addition of the composite cement also helps to improve the expansion rate of the prepared anti-aging hydrogel, so as to improve the effect of water gushing plugging.