346 results about "Polymeric surface" patented technology

The invention discloses a method for preparing a flexible electrode layer by using laser-induced graphene and the flexible electrode layer. The method comprises the following steps: preparing a laser-induced graphene pattern on the surface of a polymer by using a carbon dioxide laser; and coating flexible photosensitive resin on the surface of the polymer with the laser-induced graphene pattern, carrying out ultraviolet curing, and peeling off the cured flexible photosensitive resin and the laser-induced graphene pattern from the polymer film to obtain the LIGG and flexible photosensitive resin double-layer structure. The graphene pattern induced by laser is quickly, simply and conveniently transferred to the flexible photosensitive resin substrate by adopting an ultraviolet curing method, and the flexible electrode layer which can be bent, can be patterned, has excellent conductivity and is provided with the LIGG and flexible photosensitive resin layer structure is obtained.

The invention discloses a polymer microextraction column for in-situ growth of a metal organic framework material (MOF), which is prepared by the following steps: firstly preparing a polymer monolithic column matrix with rich metal oxide nanoparticles on the surface, and then introducing an organic linking agent solution into the monolithic column to realize self-assembly of the metal oxide and the organic linking agent on the surface of the polymer. And thus, the hybrid polymer micro-extraction column for MOF in-situ growth is obtained. The polymer micro-extraction column prepared by the invention combines the advantages of the flexible porous polymer and the rigid MOF, and has continuous large through holes and micro-mesopores with abundant acting sites; meanwhile, the microextraction column material is rich in fluorine atoms and open metal sites, can provide hydrogen bonds, F-F affinity, Lewis acid / alkali complexation and the like, has a specific enrichment effect on persistent organic fluorine pollutants such as perfluorinated compounds and fluorine aromatic hydrocarbon compounds, and has a very good application prospect in the aspect of pretreatment of environment and biological samples.

Methods employing detergent compositions effective for reducing hard water scale and accumulation on hard surfaces, namely within food, beverage and pharmaceutical applications are disclosed. The detergent compositions employ phosphinosuccinic acid adducts in combination with an alkalinity source and optionally polymers, surfactants and / or oxidizers, providing alkaline compositions having a pH between about 10 and 13.5.

The invention relates to the technical field of silicone rubber foam materials, in particular to high-compression-strength surface hydrophobic silicone rubber foam and a preparation method thereof. The high-compression-strength surface hydrophobic silicone rubber foam comprises the following substances in parts by weight: 300-500 parts of heat vulcanized silicone rubber and 2-8 parts of a hydrophobic modifier, 0.1 to 1.0 part of a photoinitiator; the hydrophobic modifier comprises a compound with a sulfydryl group and a compound with a hydrophobic group. According to the technical scheme, the components of the surface hydrophobic silicone rubber foam are optimized, the heat vulcanized silicone rubber provides necessary mechanical strength and durability, and the hydrophobic modifier obtains a hydrophobic or hydrophilic surface on the surface of a polymer through a simple mercaptan-ene click reaction; the method has the advantages of simple preparation process, high selectivity, no by-product, mild reaction conditions and short reaction time, meets the requirements of industrial production, and is beneficial to application in production practice.

The invention provides a polymer composite gel for heavy metal ion adsorption and a preparation method and application thereof, diatomite DE, chitosan CS, polyethyleneimine PEI and sodium alginate SA are used as raw materials, and polymer modification crosslinking is promoted through an ionic crosslinking method to form the composite gel. Compared with the prior art, SA is a biodegradable natural polysaccharide material, contains rich hydroxyl and carboxyl functional groups and is used as a controllable modification site, DE is used as an inorganic clay material, has a layered porous structure and contains rich active sites, and CS and PEI polymer surfaces have rich amino and hydroxyl groups and are used as ion adsorption sites. Meanwhile, PEI is used as a nucleation site and an ionic cross-linking agent to promote material modification and cross-linking to form composite gel. The composite gel is used as an ion adsorbent, can be adsorbed through chemical chelation between functional groups and ions, and can also be physically adsorbed through a porous structure, so that the composite gel shows efficient ion adsorption performance.

The invention discloses a preparation method and application of a magnesium-aluminum hydroxide composite flame retardant, and relates to the technical field of flame retardancy. The preparation method comprises the following steps: mixing magnesium hydroxide and aluminum hydroxide in proportion, adding the mixture into a modified liquid for pretreatment; dispersing the mixture into DMF, dropping protocatechuic aldehyde into the mixture under stirring, introducing nitrogen, and reacting to obtain Schiff-alkalized magnesium hydroxide / aluminum hydroxide; dispersing the mixture into DMF, adding DOPO under stirring, and reacting to obtain a magnesium hydroxide / aluminum hydroxide composite flame retardant; the composite flame retardant contains three flame retardant elements, namely, N, P, and Si, and generates non-combustible gases such as N2 and NH3 to dilute the gas phase during combustion, and also generates groups such as P-O-P, Si-O-Si, and Si-C, so as to form a high-strength and dense silicon layer and carbon layer on the surface of a polymer, effectively reducing the heat conduction speed, isolating oxygen, and slowing down the escape of combustible gas, thereby reducing the decomposition rate of the resin and slowing down the combustion rate.

The invention provides a non-fluoropolymer, a non-fluoropolymer composite diaphragm and application, the non-fluoropolymer comprises a polymer A and a polymer B at least partially coating the surface of the polymer A, the crosslinking degree of the polymer A is X1, the crosslinking degree of the polymer B is X2, 5% < = X1 < = 10%, and 50% < = X2 < = 60%; the non-fluorine polymer composite diaphragm comprises a base membrane and a coating layer coated on at least one side of the base membrane. The non-fluorine polymer particles have high swelling rate at high temperature and reversible characteristics of absorbing and releasing electrolyte, when the non-fluorine polymer and the non-fluorine polymer composite diaphragm are applied to a battery cell, when the battery cell is heated abnormally, the non-fluorine polymer swells at high speed and blocks an ion shuttle channel, further temperature deterioration is avoided, and the service life of the battery cell is prolonged. Meanwhile, when the temperature returns to normal, the non-fluorine polymer particles can recover to the original morphology and recover an ion shuttle channel, so that the subsequent cycle performance of the battery cell is not influenced.

Improvements to gratings for use in waveguides and methods of producing them are described herein. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs, an important one being a higher S-diffraction efficiency. In one embodiment, deep SRGs can be implemented as polymer surface relief gratings or evacuated periodic structures (EPSs). EPSs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) periodic structure. Removing the liquid crystal from the cured periodic structure provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.

Proteolysis Targeting Chimeras (PROTACs) are heterobifunctional degraders that specifically eliminate targeted proteins by hijacking the ubiquitin-proteasome system (UPS). Provided are pharmaceutical compositions which include a mixture of a PROTAC, a hydrophilic polymer, a surfactant, and optionally an acid and an adsorbent. Also described are methods for preparing and using such pharmaceutical compositions. In one aspect, disclosed herein is an amorphous solid dispersion comprising PROTAC.

The invention discloses a uniformly dispersed and difficult-to-settle positive electrode slurry and a preparation method thereof. The method comprises the following steps: S1, putting a positive electrode active material, a conductive agent and a binder raw material into a vacuum drying oven for drying treatment; s2, adding the pretreated positive electrode active material, a conductive agent and a binder into a solvent, and uniformly stirring to prepare initial slurry with the solid content of 45-55 wt%; s3, carrying out rotation speed gradient ascending shear dispersion treatment on the initial slurry; s4, performing intermittent ultrasonic treatment on the slurry subjected to gradient shearing treatment in an ultrasonic disperser; s5, 0.3 wt%-0.8 wt% of an amphiphilic polymer surfactant is added into the slurry obtained after ultrasonic treatment; and S6, adding 0.1-0.5 wt% of a nano aluminum oxide anti-settling agent into the slurry. According to the invention, the problems of non-uniform dispersion and easy sedimentation of the existing positive electrode slurry can be effectively solved, and the quality and product consistency of the lithium ion battery are improved.

The invention belongs to the technical field of polymer synthesis, and discloses a soap-free polymerization preparation method of a high-solid-content environment-friendly fluorocarbon resin emulsion for coating, which comprises the following steps: in the presence of an initiator, mixing and dispersing fluorine-containing olefin, other vinyl ether monomers, polyoxyethylene ether and water, and then carrying out polymerization reaction to obtain the high-solid-content environment-friendly fluorocarbon resin emulsion. The high-solid-content environment-friendly fluorocarbon resin emulsion for coating is prepared; the solid content of the high-solid-content environment-friendly fluorocarbon resin emulsion is 50 wt% or above; the polyoxyethylene ether is a polyoxyethylene ether reaction type macromonomer with double bonds and a super-long EO chain, and the EO number is greater than or equal to 20. By introducing the polyoxyethylene ether macromonomer with double bonds and an ultra-long EO (greater than or equal to 20) chain, the stability of an emulsion polymerization system is ensured, and meanwhile, the polyoxyethylene ether macromonomer participates in the reaction as a reaction monomer, so that the problems of poor optical property, electrical property and water resistance caused by the fact that an emulsifier floats on the surface of a polymer in the application process are solved.

The invention belongs to the technical field of flexible electronic materials, and particularly relates to an adsorption layer for promoting patterning and separation of liquid metal, a preparation method of the adsorption layer and a recoverable flexible liquid metal sensing device. The metal organic framework material-polymer is used as an adsorption layer for promoting patterning and separation of the liquid metal, and the characteristics that the liquid metal is adsorbed on the surface of the polymer and repelled on the surface of the metal organic framework material are achieved by adjusting surface functional groups and roughness. And meanwhile, high-precision patterning is carried out on the polymer through a 3D printing or photoetching technology, and a high-precision liquid metal pattern is obtained under selective adsorption of the liquid metal. Besides, according to the dissolution characteristics of the metal-organic framework material and the polymer, a two-step recovery method for dissolving the polymer, separating the liquid metal from the polymer and then dissolving and separating the metal-organic framework material is designed, and the scheme of the invention is beneficial to the integration and sustainable development of the liquid metal-based electronic device.

The invention discloses a high-flame-retardant insulated power cable which comprises a plurality of conductors sequentially arranged from inside to outside, the surfaces of the conductors are coated with insulating layers, a wrapping lining layer is arranged outside the insulating layers, the space between the wrapping lining layer and the insulating layers is filled with filler, the wrapping lining layer is coated with a protective layer, and the protective layer is coated with a sheath. The sheath is prepared from modified resin, during combustion, a compact fluoride protective film is formed on the surface of the cable so as to isolate oxygen and flames, organic phosphorus on the surface can be decomposed to generate phosphoric acid, metaphosphoric acid, polymetaphosphoric acid and other substances when heated, the surface of a polymer can be dehydrated and carbonized, and the organic phosphorus is compounded with an organic silicon structure to form a compact silicon-nitrogen layer, so that the service life of the cable is prolonged. The carbon nanotubes are doped with boron and nitrogen elements, so that the compactness of the silicon-carbon layer is further improved, a plurality of protective layers are formed on the surface of the cable, drippings are effectively prevented from being generated, meanwhile, the carbon nanotubes can form a network structure, the structure can play a role in blocking oxygen and heat transfer, and the flame-retardant effect is improved.

The present invention relates to a lithium metal negative electrode modified with a polymer on the surface, and the use thereof in an all-solid-state battery. A preparation method for the lithium metal negative electrode comprises: S1, polymer preparation, involving: heating a monomer solution for reaction, so as to form a polymer; and S2, preparation of a polymer-modified lithium negative electrode, involving: dispersing the polymer obtained in step S1 in a solvent to form a polymer dispersion; and coating the surface of metal lithium with the polymer dispersion, and drying same to obtain a lithium metal negative electrode modified with a polymer on the surface. By means of a reaction between the polymer and lithium, an organic / inorganic hybrid SEI film is generated, thereby improving the stability of the lithium negative electrode, and solving the problem of metal lithium dendrites; in addition, the polymer is synthesized by using a one-step solvent method in the present invention, and the preparation method is simple and easy to implement and facilitates large-scale production.

The invention relates to the technical field of adhesives, and discloses a high-viscosity flame-retardant adhesive and a preparation method thereof.The high-viscosity flame-retardant adhesive is obtained by adding boric acid modified epoxy resin, a sulfur-containing flame retardant, butyl rubber, polyvinyl alcohol and an antioxidant GSC-627 into a reactor and conducting heating reaction, and after the reaction is finished, the high-viscosity flame-retardant adhesive is obtained. Boric acid in the boric acid modified epoxy resin and the sulfur-containing flame retardant has a better flame-retardant effect, sulfur contained in the sulfur-containing flame retardant can promote formation of a carbonized layer on the surface of a polymer during combustion, and the carbonized layer can effectively isolate oxygen and external heat, so that the internal polymer is protected from further combustion, and the flame-retardant effect is achieved. Epoxy groups in the boric acid modified epoxy resin can be subjected to a ring-opening reaction with hydroxyl groups in the polyvinyl alcohol, not only react with hydroxyl groups in the polyvinyl alcohol, but also react with amino groups in the sulfur-containing flame retardant to form a net-shaped condensate, a stronger cross-linked structure is formed, and the viscosity is higher.

Methods and systems for producing an optical construction on a optical substrate, one such method including: (a) microvalving drops of a liquid, dye-containing formulation onto an optical surface of the optical substrate, to form a wet continuous layer; and (b) treating the wet layer to produce a continuous, dried dye containing layer on the optical surface, wherein the optical surface is a curved surface, and wherein the optical surface is a polymeric surface.

The present disclosure relates to prosthetic valves configured to allow or encourage tissue adherence to polymeric surfaces of valvular structures thereof. In an example, a prosthetic valve can include a frame movable between a radially compressed state and a radially expanded state, and a valvular structure mounted inside the frame, the valvular structure comprising a plurality of leaflets. Each leaflet comprises a leaflet polymeric inner surface facing a central longitudinal axis of the prosthetic valve, and a leaflet polymeric outer surface facing the frame, wherein at least one of the polymeric surfaces of the leaflet comprises a tissue-adherent surface, configured to allow tissue adherence thereto.

A stimulation fluid to prevent coacervate formation in a subterranean formation. The stimulation fluid generally comprises nanobubbles, a cationic component, and an anionic component. The cationic component may be a biocide, scale control additive, clay control additive, water control or friction reducing polymer, surfactant, or a combination of cationic components. The anionic component may be a surfactant, scale inhibitor, chelant, water control or friction reducing polymer, or a combination of anionic components.

A material composition to prepare a polymer electrolyte precursor composition capable to form a solid polymer electrolyte, which has: A) a comb-branched polymer with pendant functional groups; B)surface-modified silica particles; and C) a polymerizable solvent or a crosslinker; wherein the silica particles are capable to be dispersed in the polymerizable solvent or a non-polymerizable volatile organic solvent and form a colloidal silica dispersion can be made. The material composition can be used in preparation of a solid polymer electrolyte in a lithium ion battery to improve performance, a polymer electrolyte precursor composition, a preparation method of a solid polymer electrolyte, a method to prepare a lithium ion battery, a solid polymer electrolyte, an electrochemical device and a device.

The present invention discloses a preparation method and application of nano-dysprosium oxide particles, belonging to the technical field of rare earth material preparation. The preparation method comprises the following steps: preparing a dysprosium nitrate solution; adding deionized water to a reactor, heating the temperature to 50-70°C, and adding a surfactant; slowly adding the dysprosium nitrate solution dropwise for 2-3 hours, controlling the temperature to 50-70°C, adding an ammonium carbonate solution dropwise to control the pH of the system to 5.5-7.5, stirring for 1-2 hours after the addition is completed, obtaining a white precipitate, filtering, and washing to obtain a wet product; and roasting, crushing, and sieving the wet product to obtain nano-dysprosium oxide. The present invention avoids the agglomeration of dysprosium oxide particles during the co-precipitation process by using a prepared polymer surfactant, and the prepared nano-dysprosium oxide particles are uniform in size, have a high specific surface area, and have long-term storage stability.

The proteolytic targeting chimera (PROTAC) is a heterobifunctional degradation agent that specifically eliminates the targeted protein by hijacking the ubiquitin-proteasome system (UPS). Pharmaceutical compositions comprising PROTAC, a hydrophilic polymer, a surfactant, and optionally a mixture of an acid and an adsorbent are provided. Methods for making and using such pharmaceutical compositions are also described. In one aspect, disclosed herein is an amorphous solid dispersion comprising PROTAC.

According to the present invention, a cured coating having exceptional water and oil repellency and abrasion resistance as well as exceptional chucking properties can be formed by using a fluoropolyether-group-containing polymer having a silanol group or a hydrolyzable silyl group represented by formula (1)(Rf is a divalent fluoroxyalkylene-group-containing polymer residue, U is a divalent or trivalent organic group, Z is a silalkylene structure or a silarylene structure, Y is a divalent organic group, R is a C1-4 alkyl group or a phenyl group, X is a hydroxyl group or a hydrolyzable group, n is 1-3, and m is 1 or 2)as a surface treatment agent including said polymer and / or a partial (hydrolyzed) condensate thereof.

The invention relates to the technical field of in-vitro diagnostic kits, in particular to hollow porous monodisperse carboxyl polystyrene microspheres, a preparation method and application of the hollow porous monodisperse carboxyl polystyrene microspheres in a kit for quantitatively detecting MxA. The preparation method of the microspheres comprises the steps that firstly, hydrophilic polystyrene microspheres are prepared to serve as stable particles; then fully mixing the Pickering particles with a first oil phase to form Pickering stable particles; then a surfactant and a second oil phase are added, the mixed system is stirred at a high speed, and the second oil phase permeates into the surfaces or pores of Pickering stable particles through interface interaction and molecular diffusion; under the action of an initiator, the polymeric monomers are subjected to a polymerization reaction, the low-boiling-point organic solvent is evaporated out along with temperature rise, and a polymer with a core part of a hollow structure and a shell layer of a porous structure is formed; and adding a carboxyl-containing functional monomer to form a hydrophilic polymer chain on the surface of the polymer, thereby finally obtaining the hollow porous monodisperse carboxyl polystyrene microspheres.

A method of manufacturing a composite sensor assembly includes: providing a port including a high surface tension thermoplastic, the port having a hollow tubular portion and a base having a polymer surface; fusing the polymer surface of the port to a wall of a polymeric bioprocess vessel so that the port communicates with an opening in the wall; and retaining a sensor unit within the hollow tubular portion of the port with an adhesive, at least a portion of the sensor unit being polymeric, wherein the port provides the sensor unit access to an interior of the polymeric bioprocess vessel.

The present invention relates to pesticidal emulsions comprising an aqueous continuous phase comprising paraquat and at least one polyvinylalcohol or polyvinylalcohol derivative; a dispersed oil phase; a pesticidal active ingredient; and at least two polymeric surfactants selected from a sorbitan ester and an ethoxylated sorbitan ester. It also relates to the use of a pesticidal emulsion to control undesired vegetation.

The invention discloses an interface in-situ assembled gel and nanoparticle composite polyether sulfone membrane as well as preparation and application thereof, and belongs to the technical field of nano material and membrane separation. According to the invention, a gel and nanoparticle composite structure is constructed in situ on the surface of the membrane and in pores through a phase separation strategy for the first time, a gel layer of a main body is formed by crosslinking polyphenol and zirconium oxychloride, and nanoparticles are formed by complexing unoccupied sites of polyethyleneimine and polyphenol; a nucleation site is provided for in-situ construction of the gel layer on the surface. Compared with a surface modification post-treatment method, the method disclosed by the invention has the advantages of process integration, coating stability and the like; compared with a mixed matrix membrane constructed by zeolite and carbon nanotubes, agglomeration and polymer embedding are avoided, and a coating constructed by mixing hydrophilic gel and nanospheres can be formed on the surface of the polymer.

The invention discloses a preparation method of a microstructure. The preparation method comprises the following steps: preparing an uncured first polymer; preparing a micro-droplet generating device, and loading liquid in the micro-droplet generating device; starting a micro-droplet generation device, dispersing the liquid into micro-droplets by the micro-droplet generation device, and enabling the micro-droplets to move to the surface of the first polymer; the micro-droplets are insoluble in the first polymer; after a certain period of time, the micro-droplets form a micro-droplet array on the surface of the first polymer; and curing the first polymer, or curing the first polymer and the micro-droplets to obtain the first polymer with the microstructure on the surface. Micro-droplets are generated through a micro-droplet generation device, the micro-droplets form a micro-droplet array on the surface of a polymer under the action of power, the preparation method of the microstructure is not limited by the surface morphology of the polymer, and the microstructure can be prepared on various surfaces such as a plane and a curved surface; the problem that the microstructure cannot be prepared on the curved surface by the traditional photoetching and mold imprinting methods is solved.

The invention relates to a silicone coating composition, an architectural coating, a once-coated stain-resistant and / or stain-resistant and / or anti-fouling coating, and a method for producing an elastomeric coating composition. The elastomeric coating composition includes (a) at least one polycondensation-effective polymer having two or more silicon atoms; (b) a surface wetting agent; (c) a filler; (d) a condensation catalyst; and (e) optionally, one or more cross-linking agents.

The present invention relates to the field of tracer technology, and discloses a codable and decodable magnetic fluorescent tracer, comprising a magnetic fluorescent microsphere comprising a core formed by a plurality of fluorescent materials, a polymer coating the core, and a plurality of magnetic microspheres embedded on the surface of the polymer. The tracer has both magnetic and fluorescent functions. When sampling and testing production wells, the tracer can be enriched using a magnetic field, reducing the difficulty of purification from the produced fluid. Compared with direct testing of the original fluid, the error of subsequent analysis and detection after enrichment of the tracer is significantly reduced. The tracer can be prepared in more than 20 different colors and can be decoded using a flow cytometer, increasing the variety of fluorescent tracers.

The invention provides the field of coatings, and particularly discloses an environment-friendly optical anti-reflection coating material and a preparation method thereof.The environment-friendly optical anti-reflection coating material is prepared from a mixed base material, a fluoride additive, a polymer, a surfactant and water; the preparation method comprises the following steps: weighing the mixed base material, the fluoride additive, the polymer, the surfactant and water in parts by weight, and mixing to prepare a mixed solution; emulsifying the mixed solution through a high-shear mixer to prepare an emulsion; and filtering the emulsified liquid through filter cloth, and vacuumizing to obtain the required environment-friendly optical anti-reflection coating material. The prepared environment-friendly optical anti-reflection coating material is high in light transmittance and low in organic volatile matter.