1051 results about "Polymer coatings" patented technology

The invention provides a graphite negative electrode material and a preparation method thereof, a dry-method electrode, a battery and electric equipment, and belongs to the technical field of battery manufacturing. The graphite negative electrode material is of a core-shell structure, an inner core is graphite, a shell is a polymer coating layer, the polymer coating layer can conduct ions but cannot conduct electrons, and the graphite negative electrode material can effectively inhibit PTFE from generating side reaction with lithium ions on the surface of a negative electrode, so that the first discharge gram capacity, the first effect and the cycle performance of a corresponding battery are improved.

The invention discloses a large-size green packaging carton and a preparation process thereof, and relates to the field of packaging box preparation. The environment-friendly composite material comprises the following raw materials in parts by weight: 50-80 parts of plant fiber slurry, 10-25 parts of a modified starch-based adhesive, 5-15 parts of a nanoscale inorganic reinforcing filler, 1-5 parts of a degradable water repellent agent, 0.5-3 parts of a cross-linking agent and 2-8 parts of starch and plant fiber composite buffer microspheres. According to the preparation method, full-environment-friendly raw materials such as plant fiber slurry and a modified starch-based adhesive are selected and matched with starch and plant fiber composite buffer microspheres, and optimized processes such as segmented temperature control pressurization molding, adhesive gelatinization treatment, stirring speed reduction and microsphere structure protection are combined; and through coating of the degradable polymer coating and micron-sized hydrophobic texture imprinting, synergistic improvement of high compressive strength, excellent buffering performance, excellent hydrophobic and damp-proof effects and high degradation rate of the carton is achieved.

The invention relates to the technical field of special coating materials, in particular to a high-temperature-resistant heavy-duty anticorrosive fluorosilicone polymer coating as well as a preparation method and application thereof. The high-temperature-resistant heavy-duty anticorrosive fluorosilicone polymer coating is prepared from the following components in parts by mass: 80-100 parts of fluorosilicone resin, 10-15 parts of a nano anticorrosive material, 5-15 parts of wear-resistant powder, 5-10 parts of an anti-rust pigment, 1-2 parts of a siloxane dispersant, 1-2 parts of a polysiloxane defoaming agent, 1-2 parts of an organic silicon leveling agent, 1-3 parts of a polyamide wax anti-settling aid and 25-35 parts of an amino curing agent. 2 to 5 parts of an amino silane coupling agent; and the fluorosilicone resin has the molecular weight of 8000-12000 and contains silicon oxygen bonds. The high-temperature-resistant heavy-duty anti-corrosion fluorosilicone polymer coating prepared by the invention improves the adhesive force to a substrate, can be cured at normal temperature, and has excellent high-temperature anti-corrosion performance.

The present disclosure belongs to the technical field of all-solid-state batteries. Provided are a sulfide solid electrolyte membrane and a preparation method therefore, and an all-solid-state alkali metal ion battery. The sulfide solid electrolyte membrane is composed of sulfide particles containing a polymer coating, and the chemical composition of the sulfide particles containing a polymer coating is [EmMnSo]CαOβSγHδNζEa.

The invention relates to the technical field of lithium ion batteries, in particular to a polymer coating diaphragm and a secondary battery. The polymer coating is a double-block bottle brush polymer particle with a core-shell structure, and the polymer particle comprises a bottle brush-shaped core polymer and a shell polymer; the glass transition temperature of the core polymer is greater than or equal to 90 DEG C, and the glass transition temperature of the shell polymer is less than or equal to-10 DEG C. According to the diaphragm binder disclosed by the invention, the core layer has a relatively high glass transition temperature, and meanwhile, the introduced bottle brush polymer structure can further effectively reduce the thermal shrinkage of a diaphragm and enhance the heat resistance; the shell layer has a low glass transition temperature, the cohesiveness at room temperature is significantly improved, and the introduced bottle brush polymer structure has high stability. The ceramic diaphragm prepared by adopting the diaphragm binder disclosed by the invention has relatively low thermal shrinkage rate and relatively strong binding power with a negative pole piece.

The invention discloses a composite diaphragm, a preparation method thereof and a secondary battery. The composite diaphragm comprises a base diaphragm, the polymer coating is arranged on at least one surface of the base membrane, and the polymer coating comprises a cross-linked polymer which is formed by in-situ polymerization of a first monomer and a second monomer and has a network structure; wherein the first monomer is a monomer at least comprising a carbon-carbon double bond and an ester functional group; the second monomer is a monomer at least comprising a carbon-carbon double bond and a carbonyl functional group. Compared with the prior art, the composite diaphragm disclosed by the invention is applied to the lithium ion battery, and when the battery is overheated or short-circuited and other abnormal conditions, the polymer coating forms a compact cross-linked polymer network, so that the defect that the traditional polyolefin substrate diaphragm is easy to break at high temperature is overcome, the occurrence of thermal runaway of the battery is effectively inhibited, and the service life of the battery is prolonged. The electrochemical reaction of the battery can be stopped, and the safety of the battery is remarkably improved.

The invention relates to the technical field of immune carrier microspheres, in particular to an immune carrier microsphere constructed by individualized MHC-II combined polypeptide, a vaccine and application of the immune carrier microsphere and the vaccine. A core comprises microspheres constructed by a plurality of MHC-II binding polypeptides, sequences of the MHC-II binding polypeptides are obtained based on HLA gene typing results of an inoculator, and each HLA gene corresponds to at least one high-affinity MHC-II binding polypeptide; a shell is a glucan with sulfydryl or other polymer coating layer, and sulfydryl is used as a coupling group to be connected with an antigen to construct the vaccine. The method has the advantages that competition is avoided, inhibition is generated, a better immune effect is achieved, antibodies of high-titer carrier molecules are not generated, and cross reaction side effects are avoided. The carrier molecular diversity is reduced; side effects are avoided. And antibody immunity and cellular immunity functions are generated. The particle size of the microspheres is controllable, and the immunologic function can be achieved without adjuvants. The preparation process is simple to operate and good in repeatability.

The invention discloses a bacillus coagulans feed additive and a preparation method thereof, and relates to the technical field of feed additives, the bacillus coagulans feed additive comprises bacillus coagulans spores, the content of the spores is 1.0 * 10 < 8 >-1.0 * 10 < 11 > CFU / g; the protective agent system comprises the following components: maltodextrin or lactose, vegetable protein, polyhydric alcohol and an antioxidant; the invention discloses a microcapsule coating structure. A microcapsule is a two-layer composite coating of an inner layer alginate matrix and an outer layer polycation or polymer coating. According to the invention, bacillus coagulans spores which can still keep high survival rate under short-time high-temperature and low-pH conditions are obtained through screening and fermentation strategies of strains with high sporulation and heat and acid tolerance, the problem that common strains are easy to inactivate in granulation, extrusion and gastric acid environments is solved, the problem of product failure caused by insufficient tolerance of the strains is reduced, and the product quality is improved. And the original biological activity basis is improved, so that the protection effect of the subsequent formula and the coating can be played at a higher starting point, and the zoology effect of the final preparation is improved.

The invention discloses a humic acid coated zeolite-based nutrient-loaded slow-release fertilizer as well as a preparation method and application thereof. The slow-release fertilizer comprises a zeolite-based core and a humic acid polymer coating coated outside the zeolite-based core. The slow release fertilizer provided by the invention not only retains the original high-loading nutrient loading function of the nano composite zeolite material, but also endows the nano composite zeolite material with chemically stable ion exchange and adsorption functions, thereby thoroughly getting rid of the original'instant nutrient fertilizer salt core '; the slow-release fertilizer provided by the invention takes artificial humic acid as a coating material, so that the use of chemical organic materials and solvents is completely avoided. According to the invention, the conversion of the inorganic fly ash solid waste and the organic biomass solid waste from raw materials to the ecological slow-release fertilizer is realized. Meanwhile, the efficient conversion of zeolitization and humification in the chemical industrial process realizes the large-scale production of the zeolite-based material doped with the heterogeneous metal in the pore cage frame structure and the carbon-negative humic acid polymer material.

The invention relates to the technical field of oil-gas field development, and discloses a preparation method of a polymer coating agent for drilling fluid. Acrylamide, acrylic acid, adamantane modified quaternary phosphonium salt modified pyridyl benzoxazine and silane imidazoline quaternary ammonium salt are polymerized and then dried, and the polymer coating agent for the drilling fluid is obtained. Due to the benzoxazine, benzene ring and adamantane structures, the rigidity and stability of the polymer coating agent at high temperature are improved; hydrophilic cation ends in the quaternary phosphonium salt and the quaternary ammonium salt are adsorbed on the surface of the shale, and hydrophobic ends cover the surface of the shale, so that contact infiltration of water molecules is inhibited, and the coating inhibition property is improved; a silicon-oxygen bond is not easy to break at high temperature, so that the high-temperature resistance of the coating agent is improved; silane reacts with silicon-oxygen bonds on the surface of the shale to be grafted on the surface of the shale, so that the coating inhibition effect is enhanced; the pyridine group and the imidazoline group increase adsorption points of the polymer coating agent, multi-point adsorption is carried out on drilling cuttings and well walls, coating is formed, and the coating inhibition effect is further enhanced.

The invention belongs to the technical field of quantum dots, and discloses a preparation method of quantum dot composite microspheres and the quantum dot composite microspheres. The method comprises the following steps: mixing an aqueous solution containing an emulsifier, quantum dots, a polymer monomer, a cross-linking agent and an initiator, and emulsifying to obtain a quantum dot emulsion; carrying out polymerization reaction on the quantum dot emulsion in an inert atmosphere to form an organic polymer coating layer on at least part of the surface of the quantum dot, so as to obtain organic polymer coated quantum dot microspheres; mixing and reacting the organic polymer coated quantum dot microspheres, a silicon source and a solvent to form a silicon dioxide coating layer on at least part of the surface of the organic polymer coating layer to obtain the quantum dot composite microspheres. By adopting the method provided by the invention, the quantum dot composite microspheres with relatively good stability can be prepared.

The invention relates to the field of battery materials, in particular to a wound battery cell and an electrochemical device comprising the wound battery cell, the wound battery cell comprises a positive pole piece, a negative pole piece, electrolyte and a diaphragm located between the positive pole piece and the negative pole piece, the diaphragm comprises a base membrane and a composite layer located on one side of the base membrane, the ratio of the mass content of the first element of the composite layer on the surface of the arc area to the mass content of the first element of the composite layer on the surface of the plane area is a, the thickness difference between the aqueous polymer coating in the arc area and the aqueous polymer coating in the plane area is H [mu] m, and the thickness of the oily coating is T [mu] m, the relation of H, a and T satisfies 0.5 < = T * (H / a) < = 4. According to the winding battery cell provided by the invention, the relation T * (H / a) among H, a and T is controlled in the range, so that the K value can be effectively reduced, and the high-temperature cycle performance of the battery can be improved.

A razor blade with a sharpened cutting edge with an outer bonding surface. A hydrocarbon polymer organic coating material deposited on the outer bonding surface forming an outermost layer of the sharpened cutting edge. The hydrocarbon polymer organic coating is composed of one or more layers. Additionally, the method of coating the cutting edge is described.

The invention relates to a method for repairing waste lithium iron phosphate and application of the method, and belongs to the technical field of resource recovery. The repairing method comprises the following steps: S1, carrying out hydrothermal reaction on a mixture containing waste lithium iron phosphate, a reducing agent, a lithium source and water to obtain a precursor A; s2, mixing the precursor A with a polymer monomer solution to enable a polymer monomer to be polymerized and coated, and forming a polymer coating layer on the surface of the precursor A to obtain a precursor B; the polymer monomer comprises at least one of a polyphenol monomer, an acid monomer containing a sulfur heterocyclic ring or a monomer containing a carbon-carbon double bond; and S3, carrying out heat treatment on the precursor B in a protective gas atmosphere to obtain the repaired lithium iron phosphate material. According to the method disclosed by the invention, direct recovery of the waste lithium iron phosphate is realized through three steps of hydrothermal lithium supplementing, polymerization coating and heat treatment, and the recovered and repaired lithium iron phosphate material has high capacity and high rate performance.

Disclosed herein are systems and methods of using a coating solution such as an aromatic copolyester thermoset (ACT) to improve the wear, galling, and corrosion resistances of downhole tools and their sub-components. Aromatic copolyester thermoset may be reinforced with filler material. Further, the aromatic copolyester thermoset reinforced with filler material may be used in a borehole as a composite hollow profile, for example. In some examples, the systems may comprise a substrate for downhole applications coated with an aromatic thermosetting copolyester mixed with polytetrafluoroethylene (PTFE).

The invention discloses an application of 3, 4, 5-trifluorobromobenzene in an electric storage polymer coating, and the electric storage polymer coating is prepared from hyperbranched polyimide based on 3, 4, 5-trifluorophenyl through a spin coating method. The coating is high in solubility, good in processability and low in water absorption; the hyperbranched polyimide is formed by polymerizing a diamine compound containing 3, 4, 5-trifluorophenyl and polybasic acid anhydride, the hyperbranched polyimide has a triphenylamine structure and trifluorophenyl, tight packing of molecular chains can be improved under the combined action of torsional motion of the triphenylamine structure and the trifluorophenyl, and meanwhile, the electronegativity of F atoms is high, so that the polarity of molecules can be increased, and the hydrophobic performance can be improved.

The invention relates to a method for preparing a grid line of a battery piece, which is characterized in that a layer of polymer solution capable of flowing and extending is coated on a mold, and the surface of the mold is provided with a convex structure completely corresponding to a pattern of the grid line of the battery piece. After the polymer solution is cured, a coating with a groove structure is formed, and the grooves are filled with conductive paste. And then, transferring the polymer coating coated with the conductive slurry to the upper surface and the lower surface of the battery piece by adopting a transfer printing technology, and realizing accurate transfer printing of the grid line by accurately regulating and controlling transfer printing parameters. A photocuring technology can be introduced in the transfer printing process, and the conductive slurry is rapidly cured through ultraviolet irradiation. A high-precision mold is adopted to ensure the precision of the size and the shape of the grid line, the functional requirements of different grid line areas are met through formula adjustment and a step-by-step coating technology, the traditional preparation process is simplified, the production efficiency is improved, the production cost is reduced, the electrode structure is optimized, and the production cost is reduced. And the current collection efficiency and the overall performance of the photovoltaic cell are improved.

The invention discloses an anti-corrosion self-repairing super-amphiphobic coating film and a preparation method thereof, and belongs to the technical field of polymer coating materials. The coating film sequentially comprises a nano particle skeleton layer, a dynamic borate bond layer and a super-amphiphobic functional layer from inside to outside, and the three-layer gradient design synergistically realizes micro / nano structure stability, self-repairing and super-amphiphobic functions. The framework layer takes SiO2-TiO2 composite nanoparticles as a substrate and provides support; the dynamic boric acid ester bond layer forms a dynamic network through polycondensation of an organic boron compound, endows the self-repairing capability and enhances interface bonding; the super-amphiphobic functional layer is formed by grafting a fluorine-containing organosilicon compound and has hydrophobic and oleophobic properties. A multi-layer structure is constructed step by step, the reaction condition is mild, the operation is simple, the cost is low, the method is suitable for large-scale industrial preparation, the coating film has excellent super-amphiphobic performance and interface adhesion performance, the super-amphiphobic performance of the coating film can still be kept stable in long-term use or a complex environment, and the problem that an existing super-amphiphobic material is prone to damage is effectively solved.

A protein carrier-based active ingredient transdermal delivery system, which is a small molecule active ingredient-protein-polymer composite structure and comprises a small molecule active ingredient, a protein loaded with the small molecule active ingredient, and a polymer coating a surface of the protein. The protein is modified with a polymerizable double-bond compound. After the loading of the small molecule active ingredient, a polymerization reaction is initiated on the surface of the protein in situ, so that the surface of the protein is coated with a polymer layer. The polymer layer is biologically friendly, and the surface properties of the polymer layer can be regulated and controlled according to the transdermal depth requirement, thereby achieving the targeted transdermal delivery of proteins and active small molecules while breaking through the skin barrier, and significantly overcoming the defect of poor delivery efficiency of previous protein-based delivery systems. The transdermal delivery system has a simple preparation method with a high yield, and thus can be industrially produced on a large scale.

The invention provides a seawater-based polymer coated self-suspending proppant as well as a preparation method and application thereof, and belongs to the technical field of oilfield fracturing exploitation. The proppant is prepared from the following raw materials: a proppant body, a silane coupling agent gamma-methacryloxypropyltrimethoxysilane, acrylamide, a hydrophobic monomer hexadecyl dimethyl allyl ammonium chloride, a twin-tailed betaine monomer, sodium p-styrenesulfonate, an initiator and a solvent. The self-suspending proppant and the nonionic surfactant are compounded for use so as to be applied to the fracturing fluid. On one hand, the polymer on the surface of the proppant has good salt tolerance and is dissolved after meeting seawater, so that the viscosity is increased; and on the other hand, the surfactant and the dissolved polymer coating layer generate a synergistic effect, so that a tackifying effect is achieved. The sand suspending effect is generated as the tackifying effect of normal fracturing fluid, and the seawater low-permeability fracturing requirement is met.

The invention belongs to the technical field of secondary batteries, and particularly relates to a winding type battery and application thereof. The wound battery comprises a positive pole piece, a diaphragm and a negative pole piece which are wound in a laminated manner, and comprises a straight area and corner areas connected to two ends of the straight area, wherein in the corner region, the maximum distance between the adjacent positive pole piece and negative pole piece is A [mu] m; in the straight area, the maximum distance between the adjacent positive pole piece and negative pole piece is B [mu] m, and A-B is greater than or equal to 3 and less than or equal to 10; in addition, the diaphragm comprises a matrix and a polymer coating arranged on the surface of at least one side of the matrix, the compression ratio of the polymer coating is C, and C is larger than or equal to 40% and smaller than or equal to 70%; the polymer coating comprises polymer particles with the particle size Dv50 of 2-20 microns.

The utility model discloses a stirring kettle for preparing antifogging polymer coating, which comprises a stirring kettle main body, a bottom plate and a stirring component, the stirring kettle main body is connected to the top of the bottom plate through an auxiliary component, a feeding pipe is fixedly arranged at the top of the stirring kettle main body in a penetrating manner, and the stirring component is arranged in the stirring kettle main body. According to the stirring kettle for preparing the anti-fog polymer coating disclosed by the utility model, by arranging the stirring assembly, when a polymer in the stirring kettle main body is stirred and mixed, a transmission assembly drives a rotating rod to rotate, and reciprocating threads are further symmetrically arranged on the outer side of the rotating rod to drive two moving blocks to slide in a reciprocating manner in a rotating groove; furthermore, the rotating column is driven to rotate through the fixing ring, the stirring blades are further driven to rotate, and the materials at the bottom and the top in the stirring kettle main body are fully mixed and uniformly stirred through vertical sliding and rotation of the stirring blades.

The invention relates to the technical field of polymer composite materials, in particular to an explosion-proof and impact-resistant polymer coating material for an aircraft shell. The coating is prepared from aliphatic polyurethane acrylate, cycloaliphatic epoxy resin, nano silicon dioxide, polyethylene glycol, polyurea microcapsules, dicyclopentadiene resin, a Grubb catalyst, graphene oxide, polysulfide rubber and the balance of auxiliary materials. According to the invention, aliphatic polyurethane acrylate is used as a flexible matrix, so that the risk of hydrolysis of aromatic isocyanate is avoided. The dicyclopentadiene resin is subjected to in-situ ring opening polymerization in the presence of a Grubbs catalyst and cooperates with the hydrophobic nano silicon dioxide to block water. The polyurea microcapsules are broken by impact to release silicone oil, and cracks are filled immediately to reduce friction. And a water molecule permeation path is prolonged by the mica powder sheet layer. And the epoxy-polyurethane network realizes micro-crack self-repairing through dynamic ester bond exchange, so that the anti-explosion and anti-impact functions of the coating and the structural stability of an aircraft shell in an extreme environment are guaranteed.

The present invention addresses the problem of improving the atmospheric stability of a conventional sulfide-based solid electrolyte, and relates to a composite solid electrolyte, a method for manufacturing the same, and an all-solid-state battery comprising the same. The composite solid electrolyte includes: sulfide-based solid electrolyte particles; and a polymer coating layer formed on the sulfide-based solid electrolyte particles, wherein a polymer in the polymer coating layer contains a repeating unit represented by chemical formula (I) described herein.

The invention belongs to the field of preparation processes of zinc-rich coatings, and relates to a preparation process of a corrosion-resistant water-based passivated zinc-rich coating, which comprises the following steps: obtaining spherical zinc powder; carrying out ball milling treatment; performing kneading treatment; and high polymer coating. The process provided by the invention can meet the requirements of the market on high-performance, environment-friendly and low-cost anticorrosive paint.

The utility model discloses a composite anti-sticking coating with a Ni-Al framework, a stainless steel material and a coating tool. The composite anti-sticking coating comprises a steel material layer, a Ni-Al alloy skeleton layer and an anti-sticking polymer layer, the Ni-Al alloy framework layer is arranged on the upper surface of the steel material layer; the anti-sticking polymer layer is attached to the upper surface of the Ni-Al alloy skeleton layer; the Ni-Al alloy skeleton layer is provided with a porous structure; the porosity of the Ni-Al alloy framework layer ranges from 10% to 50%. The thickness of the Ni-Al alloy framework layer ranges from 100 micrometers to 500 micrometers. According to the scheme, the strength of the anti-sticking coating and the binding degree of the anti-sticking coating on steel can be improved, and therefore the problems that an organic anti-sticking polymer coating is low in strength and prone to abrasion and falling off are solved.

The present invention relates to a composite solid electrolyte including sulfide-based solid electrolyte particles, and a polymer coating layer formed on the sulfide-based solid electrolyte particles, wherein the polymer coating layer includes a polymer having a Mooney viscosity (ML1+4, 100 °C) of 30 to 110, and an all-solid-state battery including the composite solid electrolyte.

Provided is a superoxide dismutase-based nanoscale transdermal delivery system, which is a capsule composite structure consisting of a small molecule active ingredient, superoxide dismutase, and a polymer coating. The small molecule active ingredient is loaded in the superoxide dismutase, and the surface of the superoxide dismutase is coated with the polymer coating. The superoxide dismutase-based active ingredient transdermal delivery system has a diameter of 20-100 nm, and the polymer coating has a thickness of 7.5-52.5 nm. In the delivery system, the polymer coating protects the superoxide dismutase and the small molecule functional substance having an antioxidant effect, and the capsule composite structure is in the form of nanogel. The nanogel not only promotes the penetration depth of the delivery system, but also mitigates the stimulation of the delivery system to the skin. The delivery system features biofriendly starting materials, simple preparation method, and high yield, and thus can be produced in large scale industrially.

The embodiment of the invention relates to a slow-release polymer coating as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing a polymer monomer, a polymer monomer initiator, a solvent, a cross-linking agent and an electrolyte initiator in proportion to obtain coating precursor slurry; wherein the polymer monomer comprises a fluorinated acrylate compound; the polymer monomer initiator includes: a radical initiator; the solvent comprises an ether compound; the cross-linking agent comprises one or more of a polyethylene glycol derivative and an acrylate compound; the electrolyte initiator comprises lithium salt which can generate protonic acid with trace water and is resistant to high temperature; and coating the surface of an object to be covered with the coating precursor slurry, and carrying out heating polymerization treatment to obtain the slow-release polymer coating. The slow-release polymer coating can protect the lithium metal negative electrode and enhance the high-temperature safety performance of the lithium metal battery.

The invention provides hyperbranched polyhydroxy polyester resin as well as a preparation method and application thereof in preparation of an acrylic resin coating, and relates to the technical field of polymer coating compositions. According to the hyperbranched polyhydroxy polyester resin, pentaerythritol is adopted as a core, succinic anhydride, tetramethyl cyclobutanediol and trimellitic anhydride are sequentially connected to a hyperbranched molecular structure in a comonomer form through a continuous esterification reaction method, and the hyperbranched polyhydroxy polyester resin is prepared. In the preparation process of the hyperbranched polyhydroxy polyester resin, the reaction process can be controlled only through an acid value, meanwhile, polyester with a hyperbranched structure is synthesized by adopting a one-pot method, and the hyperbranched polyhydroxy polyester resin has the technical advantages that the synthetic resin step is simple, and a separation process is not needed. The hyperbranched polyhydroxy polyester resin can be widely applied to the preparation process of an acrylic resin coating.