1032 results about "Soluble polymer" patented technology

Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.

The invention relates to the technical field of papermaking, in particular to a papermaking filler wrapping agent and a preparation method and application thereof. The papermaking filler wrapping agent comprises a cationic polyester polyacrylamide emulsion and a high molecular weight water-soluble polymer. The papermaking filler wrapping agent has the advantages that the papermaking filler wrapping agent is insensitive to shearing action, the retention rate of filler such as calcium carbonate is high, the paper strength is not reduced, and produced paper products are good in batch stability.

The invention relates to the technical field of tunnel engineering building materials, in particular to a double-slurry synchronous grouting material based on shield silty-fine sand and a preparation method of the double-slurry synchronous grouting material based on shield silty-fine sand. The liquid A is prepared from, by weight, 20%-30% of cement, 30%-50% of shield silty-fine sand, 5%-10% of bentonite, 5%-15% of mineral admixture, 0.1%-0.5% of stabilizer and 20%-30% of water, and the stabilizer is a water-soluble high-molecular polymer; the solution B is a water glass solution, and the volume ratio of the solution A to the solution B is (10-15): 1; the double-slurry synchronous grouting material further comprises a retarder and a coagulant, the retarder is citric acid, and the coagulant is a nano Ca (OH) 2 crystal nucleus. Bidirectional and gradient regulation and control of the gelation time between 5s and 100s can be realized through the coagulant and the retarder, and diversified requirements of different geological conditions and construction progress on slurry operation time are met.

Methods, systems, and apparatuses for forming dissolvable cleaning products. The dissolvable cleaning products may be formed by forming a first component solution by mixing ingredients in a first mixer. The mixing may be suspended and the first component solution may be allowed to rest for a first holding period. A second component solution may be formed by mixing ingredients in a second mixer. The mixing may be suspended and the second component solution may be allowed to rest for a second holding period. The first and second component solutions may be mixed together and one or more of enzymes and preservatives and a water-soluble polymer may be added to form a final solution. Optionally one or more fragrances may be added. The final solution may be transferred to a mold and dried to a predetermined moisture content. The dried final solution may be cut into one or more shapes.

The invention discloses an instrument capable of being separated through light control and a preparation method and application of the instrument, and belongs to the technical field of biomedical engineering and flexible electronics. The instrument capable of being separated through light control comprises a flexible substrate layer, an electrode layer and a gel integration layer, the preparation method comprises the following steps: (1) forming an electrode pattern on a silicon wafer through photoetching, and carrying out oxygen plasma treatment to prepare a hydrophilic surface; (2) spin-coating a water-soluble polymer solution to form a sacrificial layer; (3) spin-coating silicone rubber pre-polymerized liquid and curing to form a flexible substrate layer; (4) dissolving the sacrificial layer with water to realize demolding, and embedding a patterned conductive material into the surface to form an electrode layer; and (5) coating the photo-responsive adhesive hydrogel pre-polymerization liquid, and performing cross-linking curing to form a gel integration layer, thereby obtaining the photo-responsive adhesive hydrogel. Through integrated structural design and functional material integration, the brain-computer interface ECoG electrode with high flexibility, high adhesion, high conductivity and controllable debonding capacity and the like is provided, and a technical basis and an application platform are provided for a next-generation intelligent implantable brain-computer system.

Provided in the present invention are a high-temperature-resistant filtrate reducer, a water-based drilling fluid and the use of the high-temperature-resistant filtrate reducer in drilling engineering in high-temperature subsurface environments. The filtrate reducer comprises carboxymethyl cellulose and a water-soluble polymer containing epoxy, and an open-loop coupling reaction of carboxyl and epoxy groups in high-temperature environments is utilized to induce in-situ self-crosslinking of carboxymethyl cellulose in high-temperature deep downhole environments, so that the filtrate loss reduction performance of the filtrate reducer at high temperatures is remarkably improved.

The invention discloses a polylipoic acid-based composite sponge wound dressing and a preparation method and application thereof.The preparation method comprises the following steps that polylipoic acid amide with amino is obtained through disulfide bond ring opening polymerization, and the polylipoic acid amide and an aldehyde cross-linking agent are jointly dissolved in ethyl alcohol to form a solution A; carrying out high-speed shearing, dispersing and foaming on the water-soluble polymer, and freeze-drying to form porous sponge B; the porous sponge B is soaked in the solution A to be subjected to a cross-linking reaction, vacuum drying is conducted, and the polylipoic acid-based composite sponge wound dressing is obtained. The preparation method has the characteristics of simple preparation process, safety and no toxicity, the polylipoic acid with excellent oxidation resistance is introduced into the medical sponge material, the preparation method of the polylipoic acid medical porous structure material is obtained, the oxidation resistance and the wet viscosity of the medical sponge material are improved, and the medical sponge material has good application prospects. The application of the polylipoic acid-based porous material in the fields of hemostatic materials and wound dressings is realized.

The invention discloses a hydrophobic coating with high corrosion resistance and long service life for an offshore photovoltaic support and a preparation method of the hydrophobic coating, and belongs to the technical field of surface protection of the offshore photovoltaic support. The concrete is prepared by mixing the following raw material components in parts by weight: 100 parts of a silicon-aluminum ingredient, 10-30 parts of an alkali activator, 1-2 parts of a water reducing agent, 0.3-1 part of a water-soluble polymer, 1-5 parts of an expanding agent, 0.5-2 parts of a surface modifier and 40-60 parts of water. According to the invention, corrosion ions in the marine environment are effectively prevented from invading, efficient protection of the offshore photovoltaic support and prolonging of the service life are realized, and the later maintenance cost is reduced.

The present invention belongs to the field of biomedical engineering technology, and specifically relates to a hydrogel microfiber carrying pancreatic islet α and β cells, a preparation method and an application thereof; the preparation method comprises: dissolving a photoinitiator in a cross-linked water-soluble polymer solution, filtering and sterilizing, adding pancreatic islet α and β cells to obtain a hydrogel cell prepolymer solution, passing the hydrogel cell prepolymer solution into an inner phase tube, passing an ionically cross-linked aqueous phase solution into an outer phase tube, and adjusting the flow rates of the solutions in the inner and outer phase tubes so that the liquids form a mutually immiscible laminar flow state; in a microfluidic device, after the inner phase solution contacts the outer phase solution, the ionically cross-linked components in the inner phase solution undergo ionically cross-linking with the outer phase solution to preliminarily form hydrogel microfibers, which are then secondary cross-linked by 405nm blue light irradiation to ultimately form hydrogel microfibers carrying pancreatic islet α and β cells.

The invention discloses a double-phase-change flexible film for solar power generation and a preparation method of the double-phase-change flexible film. According to the method, water-soluble polymers such as polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide and the like are used as flexible base materials and are physically blended with vanadium dioxide, freeze drying is performed, then phase change heat storage materials such as fatty acid, alkane, polyethylene glycol, paraffin and the like are subjected to vacuum impregnation adsorption, and the double-phase-change flexible film for solar power generation is synthesized. The double-phase-change flexible film synthesized by the method can realize double phase change in the same phase change temperature zone, has a selective intelligent reflection function on near-infrared light before and after phase change, and has relatively high photo-thermal conversion efficiency, and the synthesis method is simple, safe and easy to prepare. Wide application prospects are realized in the aspects of solar power generation, electronic device heat management, intelligent infrared stealth and the like.

A pressure-relief valve includes a main body equipped to be fastened to a flexible package material. The main body has at least one through hole forming a passage through the main body. A valve membrane lies, on a package side, against the main body in a region around the hole, and a sealing liquid between the main body and the valve membrane. The valve has a water-soluble polymer, whereby at least one component of the valve, for example the main body, is made of a polymer composition that includes a water-soluble polymer.

The invention provides a nicotine oral soluble film with a multi-layer structure, and belongs to the technical field of tobacco products. The nicotine oral soluble film with the multi-layer structure comprises a first film layer and a second film layer, wherein the first film layer comprises a first water-soluble polymer material and a nicotine release substance; the second film layer comprises a second water-soluble polymer material; wherein the first film layer and the second film layer are dissolved under the condition of being in contact with saliva, and the dissolving speed of the first film layer is higher than that of the second film layer.

Proposed is a method for forming an electroless plating electrode through selective cross-linking layer formation using a laser, specifically, the method includes forming a selective cross-linking layer by sintering a water-soluble polymer thin film layer, which is formed on a substrate by coating, to form a patterned shape thereon using a laser, followed by forming a precise metal pattern by electroless-plating the selective cross-linking layer with copper, nickel, or other metals. The method offers a simple manufacturing process, cost efficiency, and flexibility in manufacturing without being limited by the shape of a substrate, thereby patterns may be formed on various substrates. A catalyst material for electroless plating is mixed with a polymer material to directly cross-link the substrate. Thus, durability is improved but also an electrode may be formed with a substrate by electroless plating simply and in a short time due to use of only a single material.

In a first aspect, a coating solution includes a soluble polymer and a crosslinking precursor. The soluble polymer includes an imide group. The crosslinking precursor includes a first amine group that is either reactive or passivated towards crosslinking and one or more additional amine groups, wherein the one or more additional amine groups has been passivated towards crosslinking such that the crosslinking precursor can be chemically converted, thermally converted, photo-converted or dissociated to form at least two reactive amines. In a second aspect, a process for forming a polymer film includes: (a) casting a coating solution, (b) activating the crosslinking precursor using an external stimulus to form at least two reactive amines and crosslink the polymer, and (c) drying the polymer film. The coating solution includes a soluble polymer, including an imide group, and a crosslinking precursor.

The invention discloses antistatic medical gauze and a preparation method thereof, and relates to the technical field of medical gauze. The antistatic medical gauze comprises the following raw materials in parts by mass: 60-80 parts of cotton fibers, 1-5 parts of an antistatic agent, 5-15 parts of a water-soluble polymer and 0.5-1 part of an antibacterial agent. Compared with the traditional technology that the antistatic effect is transient and is easily influenced by environmental factors, the invention realizes long-acting and stable charge neutralization capability by introducing a specific micromolecule antistatic agent (such as a compound shown in the formula 1) and combining a moisture absorption conductive mechanism, an ionization effect and surface energy regulation. The trend shows that the static dissipation is faster and the effect is lasting, the problems of potential safety hazards and dust adsorption caused by charge accumulation are effectively avoided, and the defect that the effect of an antistatic agent in the prior art is not lasting is overcome.

This provides an improved dissolvable solid article with a specific aspect ratio. Such dissolvable solid article has a multilayer structure comprising two or more flexible, dissolvable, porous sheets, while each of which comprises a water-soluble polymer and a surfactant and is characterized by a Percent Open Cell Content of from 80% to 100% and an Overall Average Pore Size of from 100 μm to 2000 μm. The multilayer dissolvable solid article is characterized by a maximum dimension D and a minimum dimension z; and wherein the ratio of D / z ranges from 1 to 10.

Embodiments of the present disclosure are directed to a coated substrate comprising a water swellable coating applied to the substrate. Based on the total weight of the water-swellable coating, the water-swellable coating comprises 30% to 90% by weight of a plastisol binder and 10% to 70% by weight of a superabsorbent polymer. The plastisol binder comprises from 1 wt% to 50 wt% of a water soluble polymer and from 50 wt% to 99 wt% of a plasticizer, based on the total weight of the plastisol binder.

The invention relates to a preparation method of a water-in-water nanocellulose Pickering emulsion with uniform and controllable size, which comprises the following steps: S1, preparing an aqueous two-phase system, and respectively preparing a water-based continuous phase and a dispersed phase of a water-soluble polymer with compatible type, concentration and molecular weight; s2, preparing an aqueous continuous phase suspension containing 5%-8% of cellulose nanocrystal (CNC) particles; s3, assembling a micro-channel device which comprises a two-water-phase two-channel angle-designable feeding pipe, a length-dependent composite pipe for regulating and controlling the size of a dispersed phase, a lead-in pipe for introducing the particle suspension and the composite pipe according to a set angle, and a spiral pipe for forcibly assembling and optimizing particles on a two-phase interface and adaptively regulating and controlling the length / screw pitch / diameter; s4, preparing a water-in-water emulsion with stable CNC particles; according to the method, two-water-phase compounding and particle interface assembling are strengthened through micro-channel design, the flow speed and the air pressure interruption time are regulated and controlled, accurate control over the emulsion size and the droplet distance is achieved, and the common problems that the emulsion size is not uniform and the particle coverage degree is not high are solved.

The invention discloses a preparation method of an anti-aging lead-acid battery electrolyte, and relates to the technical field of electrolytes. According to the electrolyte, dilute sulphuric acid is adopted as a basic system, and a biological small molecule synergistic inhibitor (sodium glutamate and taurine), organic weak acid salt (triammonium citrate), water-soluble polymer (hydroxypropyl methyl cellulose), a conductive nano material (graphene oxide) and a green deep eutectic solvent (choline chloride-ethylene glycol) are compositely introduced; and a trace amount of aluminum salt and a metal organic catalyst are supplemented. By inhibiting sulfation, relieving grid corrosion, inhibiting gassing and balancing acid concentration, systematic improvement of the cycle life, the charge acceptance and the repair capacity of the lead-acid battery is realized.

The invention belongs to the technical field of biomass composite material processing, and discloses a plant fiber-polymer composite material and a preparation method thereof. The plant fiber-polymer composite material is prepared from the following raw materials in parts by mass through plasticizing extrusion molding: 50 to 88 parts of plant fibers, 0.5 to 8 parts of a biomass cross-linking agent, 0.5 to 5 parts of a low-temperature water-soluble polymer, 10 to 50 parts of water and 0.05 to 3 parts of metal ions, wherein the metal ions and the biomass cross-linking agent form a reversible cross-linked network in the system through coordination; due to the existence of the reversible cross-linked network, the composite material can be plasticized and continuously extruded and molded under the shearing action at the temperature of 20-70 DEG C. The metal ion-biomass cross-linking agent coordination network provides high structural strength in a static state and is reversibly dissociated in a shear field, so that shear-driven plasticizing of a high-viscosity and high-fiber-content system in a low-temperature interval of 20-70 DEG C is realized.

The invention discloses a GO-coated MIL-88A (Fe) / BiVO4 ternary composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalysis. The preparation method of the GO-coated MIL-88A (Fe) / BiVO4 ternary composite photocatalyst comprises the following steps: sequentially adding MIL-88A (Fe) / BiVO4 and a water-soluble high-molecular compound into a GO solution, uniformly mixing the MIL-88A (Fe) / BiVO4 and the water-soluble high-molecular compound, pouring the MIL-88A (Fe) / BiVO4 and the water-soluble high-molecular compound into a mold, freezing and forming the MIL-88A (Fe) / BiVO4, drying the MIL-88A (Fe) / BiVO4, and performing heat treatment to obtain the GO-coated MIL-88A (Fe) / BiVO4 ternary composite photocatalyst. According to the invention, GO is used as a substrate, MIL-88A (Fe) / BiVO4 is loaded on the surface of the GO, the GO-coated MIL-88A (Fe) / BiVO4 ternary composite photocatalyst is constructed, and the chemical stability and recoverability of the catalyst material are obviously improved.

This coating liquid contains: aerogel particles; a water-soluble polymer having a hydrophobic group; a binder resin; and a liquid medium, wherein the water-soluble polymer comprises a cellulose based resin having an alkyl group having 6 to 26 carbon atoms. The coating liquid is capable of forming a coating film having a high filling rate of aerogel particles and an excellent film strength and is excellent in terms of the dispersibility of aerogel particles.

The invention provides a polyurethane polishing pad and a preparation method thereof, the polyurethane polishing pad comprises a polyurethane mixture, the polyurethane mixture comprises a polyurethane prepolymer, a curing agent and a heat dissipation filler; in the polyurethane mixture, the mass percent of the polyurethane prepolymer is 50%-90%, the mass percent of the curing agent is 10%-30%, and the mass percent of the modified filler is 1%-10%; the water-soluble polymer compound system comprises polyvinylpyrrolidone, carboxymethyl cellulose and polyethylene glycol, the water-soluble polymer compound system is characterized in that the polyvinylpyrrolidone and the carboxymethyl cellulose are grafted to form a grafted copolymer, the grafted copolymer is compounded with the polyethylene glycol, and the mass ratio of the polyvinylpyrrolidone to the carboxymethyl cellulose in the grafted copolymer is 10: (1-2). The heat dissipation filler is added into the polyurethane, so that an effective heat dissipation effect can be achieved, the polishing uniformity is prevented from being affected by overheating of the polishing pad and the wafer, and the surface temperature of the polished wafer is moderate.

The invention relates to the technical field of water-soluble polymers, in particular to a preparation method of a low-temperature-resistant water-in-water emulsion, which comprises the following steps: mixing acrylamide, an anionic monomer, a hydrophobic monomer, a dispersing agent, a chain transfer agent and water, adjusting the pH value, mixing with a stabilizer, introducing nitrogen, sequentially adding an oxidizing agent and a reducing agent to initiate a polymerization reaction, and cooling to obtain the low-temperature-resistant water-in-water emulsion. Quickly adjusting the stirring speed when the viscosity of the mixed system is increased, always keeping vortex at the center of the liquid level in the reaction process, and adjusting the stirring speed to continue the reaction after the polymerization system forms emulsion drops; and when the temperature of the polymerization system begins to reduce, adding an excessive amount of a reducing agent into the reaction system to continue the reaction, and obtaining the low-temperature-resistant water-in-water emulsion after the reaction is finished. The emulsion has the advantages of low apparent viscosity, high dissolution speed, small environmental damage, low temperature resistance and the like.

The invention relates to the technical field of bioengineering, in particular to an exosome separation material with CLIKKPF as a ligand and a preparation method of the exosome separation material. A novel exosome affinity medium is developed by utilizing the Ca < 2 + > dependency recognition characteristic between CLIKKPF and PS, specific adsorption of the exosome is realized by virtue of a water-soluble polymer and a brush-like structure thereof in combination with polypeptide CLIKKPF, and meanwhile, rapid separation of the target exosome is realized by utilizing nano magnetic beads as supporting particles.

Disclosed in the present invention are an aqueous triggered controlled-release saline-alkali soil conditioner and a preparation method therefor. The aqueous triggered controlled-release saline-alkali soil conditioner comprises agent A. The agent A comprises a water-soluble polymer and controlled-release suspended particles. The controlled-release suspended particles comprise alginate / anti-reverse regulator composite particulates. The alginate / anti-reverse regulator composite particulates are obtained by sequentially subjecting an alginate to two-step gel cross-linking by means of a cationic anti-reverse regulator and a high-valent metal ion-containing cross-linking agent. In the present invention, the alginate used as a main material is subjected to charged regulator-based high-speed dispersion for primary gelation and high-valent metal-based secondary gelation, thereby preparing a micron-nano powder and suspension, and incorporating a solvable organic polymer material, the functions of graded release and intelligent regulation of a product are achieved. The incorporation of an organic acid and a phosphoric acid material can not only prevent a micro-irrigation device from scaling but can also achieve triggered controlled-release of the material on demand and in a timely manner, thereby achieving the effects of multi-particle-size dispersion and precise release of the product in soil.

The invention belongs to the technical field of heterogeneous phase intermetallic compounds, and discloses a ruthenium-germanium heterogeneous phase intermetallic compound and a preparation method and application thereof. The preparation method comprises the following steps: step 1, dissolving Ge precursor salt, Ru precursor salt and a carrier material in a water-soluble polymer solution; the mmol ratio of the Ru precursor salt to the Ge precursor salt is 0.05: (0.05-0.09); step 2, performing freeze drying treatment on a product in the step 1; 3, performing high-temperature heat treatment on the product obtained in the step 2 in a reducing atmosphere at the temperature of 800-1000 DEG C, and preparing the ruthenium-germanium heterogeneous phase intermetallic compound after the high-temperature heat treatment; according to the ruthenium-germanium heterogeneous phase intermetallic compound prepared through the preparation method, the ruthenium-germanium heterogeneous phase can be obviously observed through a spherical aberration electron microscope, the synergistic effect is generated through strong interaction among different components, the physical and chemical properties of the material can be obviously optimized, and when the ruthenium-germanium heterogeneous phase intermetallic compound is used as a catalyst, the catalytic effect is extremely good.

The invention discloses a composite gel particle plugging agent for plugging steam channeling as well as preparation and application of the composite gel particle plugging agent. Belongs to the technical field of oilfield chemistry. The plugging agent disclosed by the invention has a triple combination structure of'rigid inorganic core-elastic gel shell-oil soluble surface layer ', and the elastic gel shell permeates through a cross-linked network and is chemically anchored in a porous structure of the core to form an organic-inorganic interpenetrating interface. The surface modifier is an oil soluble polymer. The plugging agent disclosed by the invention realizes cooperation of rigid support, elastic plugging and flexible selectivity, so that after the plugging agent is aged for 7 days in a steam environment with the temperature of 300 DEG C and the mineralization degree of 20 * 10 < 4 > mg / L, the volume retention rate is greater than or equal to 85%, the single-particle compressive strength is greater than or equal to 1.5 MPa, and the ratio (selectivity index) of the plugging rate to a water-phase channel to the damage rate to an oil-phase channel is greater than or equal to 7.0; the technical problems that an existing plugging agent is prone to failure under the extremely high temperature and high salt, the plugging strength is low, and flexible selectivity is lacked are effectively solved.

The invention discloses a light epoxy resin-based wave-absorbing material and a preparation method thereof, and the light epoxy resin-based wave-absorbing material comprises the following components in parts by weight: 100 parts of epoxy resin molding compound, 1-6 parts of conductive filler, 20-40 parts of water-soluble polymer and 1-3 parts of foaming agent. The composition is uniformly dispersed in a ball mill, and the closed-cell foaming material with adjustable density is obtained by chemical foaming. And a Fe3O4 / PEDOT wave-absorbing agent is loaded in the holes in situ, so that a multi-layer structure design of'weak current-magnetism-strong current 'is realized in the integrally uniform foaming material. The epoxy resin-based electromagnetic shielding material has the advantages of low density, high electromagnetic shielding, high wave absorbing efficiency, excellent mechanical properties and the like.

The invention relates to the technical field of fire extinguishing agents, in particular to a multiphase gel general fire extinguishing agent and a using method thereof. The multiphase gel general fire extinguishing agent comprises a component X and a component Y. The component X and the component Y are both aqueous solutions and are stored separately, the component X comprises 1-10 wt% of water-soluble polymers, and the component Y comprises 0.1-5 wt% of a cross-linking agent. According to the fire extinguishing agent, the water-soluble polymer in the component X and the cross-linking agent in the component Y can react to form a three-dimensional polymer network, meanwhile, water in the solution is completely wrapped in the three-dimensional polymer network, a multi-phase hydrogel product is formed, the mass ratio of the water is very high (90-99%), and the mass ratio of the three-dimensional polymer network is very low (0.05-0.5%). The multiphase gel general fire extinguishing agent provided by the invention has the advantages of good stability, strong water-retaining property, strong burning resistance, strong adhesion, good adaptability, wide applicability, good environmental protection property, recoverable film and the like.