646results about "Polyamide coatings" patented technology

The invention relates to the technical field of coatings, and discloses an amino-terminated ether-containing hyperbranched polyamide modified epoxy resin coating, which comprises a component A: 100 parts of a water-borne epoxy resin emulsion, 5-20 parts of titanium dioxide, 1-2.5 parts of a dispersant, and 0.05-0.2 part of an antifoaming agent; the component B is prepared from 50 to 70 parts of amino-terminated ether-containing hyperbranched polyamide; the amino-terminated ether-containing hyperbranched polyamide contains an active amino-terminated group, so that the amino-terminated ether-containing hyperbranched polyamide is used as a curing agent and is subjected to a cross-linking curing reaction with epoxy resin, the hyperbranched polyamide has a three-dimensional branched network structure and forms a spatial cross-linked interpenetrating network system with the epoxy resin, and the hyperbranched polyamide contains a flexible ether-containing chain segment and an alkyl chain segment, so that the cross-linking property of the hyperbranched polyamide is improved. The epoxy resin coating has a good toughening effect, improves the impact resistance and impact strength of an epoxy resin coating layer and a casting body thereof, and keeps high hardness and tensile strength at the same time.

The invention discloses a waterproof anticorrosive coating and a preparation method and application thereof, and relates to the technical field of coatings, and the waterproof anticorrosive coating is prepared from the following raw materials in parts by weight: 30-40 parts of carboxyl-terminated hyperbranched polyester resin, 20-30 parts of carboxyl-terminated functional polyamide, 10-15 parts of hyperbranched polyurethane containing epoxy groups, 15-20 parts of filler, 1-3 parts of (3, 6-diamino acridine-9-yl) boric acid, 1-3 parts of 1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5- the component A is prepared from the following components in parts by weight: 3-5 parts of 2, 3, 5-triglycidyl-S-triazinetrione, 1-2 parts of a coupling agent, 0.8-1.2 parts of a flatting agent and 0.6-1.3 parts of a defoaming agent; the carboxyl-terminated functional polyamide comprises a structural unit introduced by the following monomers: N-(4H-1, 2, 4-triazole-4-yl) diphenylamine-4, 4 '-dicarboxylic acid, and 3, 3'-diamino-4, 4 '-difluorodiphenyl sulfone. The coating is good in waterproof and anti-corrosion performance, high in adhesive force with a base material, sufficient in solvent resistance and aging resistance and long in service life.

The invention discloses lithium ion battery slurry and a coating process thereof, and belongs to the technical field of battery diaphragms. The lithium ion battery slurry comprises the following raw materials in parts by weight: 40-50 parts of ceramic powder, 10-15 parts of bio-based semi-aromatic polyamide, 10-15 parts of polyvinylidene fluoride, 35-45 parts of a solvent and 1-4 parts of a dispersing agent. The coating process comprises the following steps: A1, sequentially adding a solvent and a dispersing agent into a stirring tank, then adding ceramic powder, bio-based semi-aromatic polyamide and polyvinylidene fluoride, and uniformly stirring and mixing to obtain bio-based coating slurry; a2, feeding a polyethylene-based membrane into a coating device, coating by using the bio-based coating slurry prepared in the step A1, coating at least one side of a battery diaphragm by adopting a micro-concave roller coating mode, and drying and rolling the coated battery diaphragm to obtain a finished product of the ceramic-coated lithium battery composite diaphragm. The dispersing agent is used in the process of preparing the coating slurry, so that the mechanical property, the heat resistance and the adhesion property of the diaphragm can be improved.

According to the lithium ion battery diaphragm slurry, the diaphragm and the lithium ion battery disclosed by the invention, a furyl polyamide solution and ceramic powder are mixed to obtain a cortex solution, and furyl polymers have relatively high mechanical properties, so that the mechanical properties of the diaphragm prepared by subsequent coating can be improved. The hollow furyl polyamide nanofiber is prepared from the skin layer solution and the core layer solution, the ceramic particles are added in the process of preparing the hollow fiber instead of mixing the prepared hollow fiber with the ceramic particles, the ceramic particles can be dispersed on the surface and inside the hollow fiber, agglomeration of the ceramic particles is avoided, and the hollow fiber is prepared. The preparation method has the advantages that the dispersion degree of furyl molecular chains is increased, the dispersion degree of the slurry is high, and meanwhile, the surface area of the slurry in contact with the diaphragm during subsequent coating can be increased due to generation of hollow fibers, so that the wettability of the diaphragm to electrolyte is effectively improved, and the heat resistance of the diaphragm is higher and the thermal shrinkage rate is lower.

The invention provides a preparation method of a two-dimensional high-strength coating material, which comprises the following steps: under the protection of inert gas, dissolving melamine and trimesoyl chloride as reaction monomers in a solution A, adding triethylamine as an acid-binding agent, and promoting amidation reaction through magnetic stirring; after the reaction is finished, washing with saturated saline solution and NaHCO3 to remove impurities, and then obtaining high-purity two-dimensional polymer powder through the steps of solution mixing, ultrasonic treatment, centrifugal separation and the like. And finally, dissolving polymer powder in the solution F to prepare two-dimensional polymer solutions with different concentrations, and coating the two-dimensional polymer solutions on the surface of a substrate pretreated by acetone and isopropanol to obtain a flat and compact coating film. The triethylamine is adopted as the acid binding agent, so that the purity and the reaction efficiency of the polymer are improved, the preparation controllability and the structural uniformity of the coating material are remarkably improved, and the high-performance coating requirements in the fields of machinery, chemical protection and the like are met.

A tape measure including an elongate tape blade is shown. The tape measure includes a relatively short protective polymer film coupled to an end of the tape blade adjacent to the hook end of the tape blade.

The invention discloses a high-toughness biaxially oriented nylon film and a production method thereof. Comprising the following raw materials in parts by weight: 40-50 parts of copolymerized nylon resin, 10-20 parts of nylon 12, 15-25 parts of thermoplastic polyamide elastomer, 3-6 parts of nanofiller, 1-3 parts of coupling agent, 10-20 parts of reinforced fiber, 5-8 parts of additive, 3-7 parts of ethylene-methyl acrylate-glycidyl methacrylate terpolymer and 6-10 parts of modified cellulose nanocrystal. The invention relates to a flame-retardant polyamide resin, which is prepared from the following components in parts by weight: 2-4 parts of amino-terminated hyperbranched polyamide and 1-3 parts of 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone. The film is high in tensile strength, good in tear resistance and excellent in barrier property and low-temperature impact resistance.

The invention belongs to the technical field of vehicle protection materials, and particularly relates to a coating for an explosion-proof vehicle. The coating is composed of an adhesion bottom layer, an energy-absorbing middle layer and an anti-impact outer layer, wherein the adhesion bottom layer contains epoxy resin and flaky zinc powder / mica powder, and a laminated shielding structure is formed to improve the adhesion force to be larger than or equal to 8 MPa; the energy-absorbing middle layer is a composite material of modified nano silicon dioxide / polyethylene glycol-based STF and silanized aramid fiber, the viscosity of the energy-absorbing middle layer is sharply increased by more than 50 times at the strain rate of 500s <-1 >, and 65% of explosion impact energy can be absorbed; the anti-impact outer layer adopts a polyurea elastomer to wrap gradient distribution silicon carbide microspheres, pyramid-shaped protrusions are designed on the surface, the fragment defense speed reaches 430 m / s, and the shock wave reflection dispersion is increased by 50%. The whole anti-explosion coating passes UL94V-0 certification through a synergistic flame-retardant system, the chemical protection and self-cleaning capacity is improved through a super-hydrophobic surface layer, and the problems that a traditional anti-explosion coating is poor in adhesive force, weak in composite threat resistance and insufficient in environmental adaptability are solved.

The invention provides polar group grafted aramid-based resin as well as a preparation method and application thereof, and relates to the technical field of secondary batteries. The polar group grafted aramid-based resin is at least one polar group grafted aramid polymer, and the polar group is selected from one of an ether bond group, a sulfonate group, a quaternary ammonium salt group, a carbonate group, a phosphate group, a sulfimide group and a corresponding derivative group. The polar group grafted aramid-based resin breaks the interaction among aramid resin molecules, improves the solubility of the material, and promotes the modified aramid material to be easy to process and prepare. Meanwhile, the existence of polar groups promotes the interaction between the polymer and ionic groups, so that the ionic conductivity of the material is improved.

The invention provides a conjugated frame encapsulated graphene functionalized polymer anti-corrosion anti-impact double-effect heat-conducting coating and a preparation method thereof, the method comprises the following steps: step S1, mixing graphene with a bromine source to prepare brominated graphene; step S2, adding a halogen monomer, a conjugated alkyne monomer, a catalyst and the brominated graphene obtained in the step S1 into a mixed solution, and inducing a conjugated frame to perform in-situ packaging on the surface of the graphene in an inert gas atmosphere to prepare conjugated frame packaged graphene; s3, performing high-temperature carbonization treatment on the conjugated frame packaged graphene obtained in the step S2, and permeating a corrosion-resistant matrix to prepare a conjugated frame packaged graphene functional polymer; and step S4, loading a heat conduction material and a thickening agent on the graphene functionalized polymer obtained in the step S3 to prepare the graphene functionalized polymer coating. The coating prepared by the invention has the characteristics of continuous conjugate frame, hierarchical pore structure and corrosion resistance and impact resistance, and is suitable for the field of protection of efficient heat exchange equipment.

Provided is a barrier film that includes a vapor deposition film and a coating layer formed on an OPP film substrate, and that is capable of suppressing deterioration of barrier properties after heat sterilization treatment; and a laminate using the barrier film.　This barrier film is obtained by sequentially laminating a biaxially stretched polypropylene substrate, a base layer, and an aluminum oxide vapor deposition film. A peak top ratio P based on X-ray absorption fine structure analysis of the aluminum oxide vapor deposition film is 0.70 or more and less than 1.05.　P = (intensity peak top at around 1,572 eV) / (intensity peak top at around 1,566 eV)

An embodiment of the present invention relates to a film including a layer A, and a layer B provided on at least one surface of the layer A, in which a dielectric loss tangent of the film is 0.010 or less, and a ratio of an absorbance of the layer B at a wavelength of 355 nm to an absorbance of the layer A at a wavelength of 355 nm is 0.45 or more and 1.00 or less, and a laminate including a film having a layer A and a layer B, and a metal layer or a metal wire on a B layer side of the film, in which a dielectric loss tangent of the film is 0.010 or less, and a ratio of an absorbance of the layer B at a wavelength of 355 nm to an absorbance of the layer A at a wavelength of 355 nm is 0.45 or more and 1.00 or less.

A formulation and method for producing a multilayer film and a coated multilayer film comprising a barrier layer including a polar polymer resin, such as EVOH, as described.

The invention discloses a high-temperature-resistant water-soluble aramid coating diaphragm and a preparation method thereof, and belongs to the technical field of battery diaphragms. The diaphragm is obtained by coating the surface of a base membrane with water-soluble aramid fiber slurry and performing cross-linking and drying, the base membrane is a PE / PVA composite membrane; the water-soluble aramid fiber slurry is prepared from the following raw materials in parts by mass: 10 to 20 parts of modified aramid fiber polymer, 40 to 80 parts of deionized water, 3 to 6 parts of cosolvent and 5 to 8 parts of multi-epoxy group cross-linking agent; the modified aramid fiber polymer is obtained by carrying out polymerization reaction on 1, 4-phenylenediamine-2-sulfonic acid and 2, 6-dipicolinic acid. The hydrophilic property of the polymer is improved by the pyridine ring and sulfonic acid introduced into the modified aramid polymer, the prepared water-based slurry is more environment-friendly, the reaction of the multi-epoxy group cross-linking agent and the polyvinyl alcohol of the PE / PVA composite diaphragm under the heating condition is promoted through the sulfonic group, a cross-linked network is formed, and the binding force of the coating and the base membrane is enhanced.

The invention relates to a wafer cutting protection liquid for a laser-assisted plasma etching process and a preparation method and application of the wafer cutting protection liquid, and the wafer cutting protection liquid comprises the following components in parts by weight: 70-85 parts of water-soluble furyl polyamide resin; 15-25 parts of a solvent; 1-5 parts of a plasticizer; 0.1-1 part of an ultraviolet light absorber; and 0.1-1 part of a leveling agent. The wafer cutting protection liquid provided by the invention can form a protection film which has excellent mechanical properties, wear resistance and heat resistance and is easy to clean, and is widely applicable to thin wafer processing, deep silicon etching, TSV through hole processing technologies and the like.

The invention provides a polymer total heat exchange membrane with a Tailing structure and a preparation method and application thereof.The polymer total heat exchange membrane comprises a net-shaped porous supporting layer and a functional layer, and the functional layer is arranged on the single-side surface of the net-shaped porous supporting layer and fills at least part of pores of the net-shaped porous supporting layer; the functional layer is provided with an uneven Turing structure; the net-shaped porous supporting layer and the functional layer with the uneven Tailing structure are matched, so that the obtained polymer total heat exchange membrane has excellent moisture permeability and is suitable for being applied to a fresh air exchange system.

The invention discloses a flame-retardant bio-based lithium battery diaphragm and a production process thereof, and belongs to the technical field of battery diaphragms. Comprising the following steps: S1, uniformly mixing nano silicon dioxide, an amino-containing silane coupling agent and a solvent, heating, stirring, washing and freeze-drying to obtain amino-modified silicon dioxide; mixing the amino-modified silicon dioxide, p-hydroxybenzaldehyde, glacial acetic acid, anhydrous magnesium sulfate and absolute ethyl alcohol, and performing heating reflux, cooling precipitation and vacuum drying to obtain modified silicon dioxide; s2, uniformly mixing diamine containing the furan ring structure, acyl chloride containing the furan ring structure and an organic solvent in an inert atmosphere, adjusting the pH value, heating and stirring to obtain a mixed solution; uniformly mixing and stirring the mixed solution with modified silicon dioxide and tannic acid to obtain a bio-based polymer coating solution; and S3, coating a base material with the bio-based polymer coating liquid to prepare the flame-retardant bio-based lithium battery diaphragm.

The invention discloses an antibacterial coating which comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 40-60 parts of epoxy resin, 15-35 parts of polyamide resin, 5-10 parts of tea tree essential oil, 1-3 parts of di (2-ethylhexyl) phthalate, 1-2 parts of fumed silica, 1-2 parts of acrylate, 1-2 parts of sodium phosphate and 1-2 parts of polyvinyl ether. The component B comprises the following raw materials in parts by weight: 20-30 parts of modified nano zinc oxide, 40-60 parts of an antibacterial curing agent, 15-20 parts of butanol and 2-10 parts of acetone. The weight ratio of the component A to the component B is 8: (2-4), and the water-resistant coating is excellent in mechanical property, high in adhesive force and good in water resistance.

The invention discloses a CuS enhanced super-amphiphobic photo-thermal anti-icing coating, which comprises a photo-thermal composite super-amphiphobic surface layer and a resin bottom layer, and finish paint adopted by the photo-thermal composite super-amphiphobic surface layer is prepared from the following components in parts by weight: 0.06 to 0.08 part of CuS-Fe3O4 composite material, 0.8 to 2 parts of hydrolyzable silicon source, 4 to 6 parts of alcohol solvent, 0.2 to 0.5 part of alkali liquor, 0.014 to 0.02 part of fluorocarbon and 0.8 to 2 parts of acid liquor. And 0.8 to 2 parts of silane low surface energy substances. According to the method, CuS and Fe3O4 are organically combined and effectively compounded in a super-amphiphobic coating system, and the obtained anti-icing coating has excellent super-amphiphobic performance, photothermal effect, stability and the like; and the related preparation process is simple, convenient and feasible, low in energy consumption, capable of realizing large-scale production and suitable for popularization and application.

The present disclosure relates a method of chemical polishing a 3D printed object. The method comprises treating a 3D printed object with solvent to reduce the surface roughness of the 3D printed object, and controlling the Youngs modulus of the 3D printed object within a target value by selectively removing at least part of the solvent from the 3D printed object.

Provided are a film including a layer A, and a layer B provided on at least one surface of the layer A, in which an elastic modulus of the layer A at 160° C. is 100 MPa to 2,500 MPa, and a value of a difference LA-LB between a value LA obtained by subtracting a weight residual rate of the layer A at 900° C. from a weight residual rate of the layer A at 440° C. and a value LB obtained by subtracting a weight residual rate of the layer B at 900° C. from a weight residual rate of the layer B at 440° C. is 80% or less.

Lightweight composite building panels with incorporated drainage layer that facilitates moisture removal and methods of manufacturing and using lightweight composite building panels with incorporated drainage layer. The lightweight composite building panels with incorporated drainage layer can be used to applied a desired finish to exterior wall and roof structures. The lightweight composite building panels include a core composite panel structure and a drainage layer attached or bonded thereto. The core composite panel structure includes a foam core sandwiched between first and second protective layers, such as a fiber mesh reinforced cementitious composition and / or cured thermoset resin or other rigid material. The drainage layer is designed to face an exterior wall or roof structure to facilitate removal of moisture between the panels and underlying wall or roof structure. The building panels can be cut, drilled, and screwed, nailed, or glued to structural elements of buildings, such as OSB sheathing.

The invention relates to the technical field of composite current collector materials, and provides a preparation method of a PET-based composite copper foil. The method comprises the following steps: (1) dropwise adding concentrated sulfuric acid into a xylene dispersion liquid of a poly (gamma-benzyl-L-glutamate) nanorod, spraying onto the surface of a PET film, standing for reaction, and performing vacuum drying; (2) spraying an acetic acid solution of hydrobromic acid to the surface of the PET film, standing for reaction, washing and vacuum drying; (3) soaking the PET film in ammonia water, soaking the PET film in a silver nitrate solution, and soaking the PET film in a formaldehyde solution; and (4) chemical copper plating. The method not only can improve the interface bonding between the PET base film and the copper plating layer, but also has good environmental protection property and economical efficiency.

A matting agent for powder coatings and its application, and a matte powder coating and its application are disclosed. The matting agent for powder coatings includes a hydroxyl functional component and a carboxyl functional component, the matting agent can achieve the matting effect of HAA powder coatings with <30% gloss (60°); the resin selectivity of the matting agent is low, and a good matting effect can be realized when used in combination with different carboxyl film-forming resins; and the matting effect of the matting agent is stable, and the prepared matte powder coating can obtain a stable matting effect under different curing conditions.

The invention provides a composite coating for a battery diaphragm as well as a preparation method and application thereof, and relates to the technical field of secondary batteries. Specifically, the composite coating for the battery diaphragm comprises a heat-resistant polymer, a modified ceramic material, a binding material and a flame-retardant material, wherein the modified ceramic material comprises a ceramic material of which the surface is grafted with an MOFs (Metal-Organic Frameworks) material, and the ceramic material comprises porous ceramic particles and ceramic nanowires. By designing and providing the coating, the liquid absorption and liquid retention performance of the battery diaphragm are remarkably improved, the liquid injection time of the battery can be greatly shortened, the manufacturing efficiency is improved, and the cycle life of a battery cell is prolonged; meanwhile, the diaphragm disclosed by the invention is excellent in flame retardance and heat resistance, can effectively improve the safety performance of the battery, and has a good application prospect.

The invention belongs to the technical field of coatings, and discloses a water-based epoxy coating for automobiles and a preparation method thereof.The water-based epoxy coating is prepared by preparing water-based rigid epoxy resin, water-based flexible epoxy resin, a diamine curing agent and a block polymer as components in the water-based epoxy coating and matching the four components with a step-by-step coating process. High-activity amido in the curing agent and rigid resin form a high-density network to endow the top layer with hardness, the curing agent and flexible resin form hardness and softness to improve the toughness of the bottom layer, epoxy groups of the block polymer and low-activity amido in the bottom layer are covalently anchored, carboxyl and the amido in the top layer form amido bonds, firm molecular bridges are constructed, interlayer reinforced connection is achieved, and the bonding strength is improved. The coating has high hardness, high toughness and excellent interlayer adhesive force, and solves the problem of non-uniform performance caused by low crosslinking density and side reaction of the traditional waterborne epoxy coating.

One example of a jettable antioxidant formulation is used for three-dimensional (3D) printing. The jettable antioxidant formulation includes an antioxidant blend; a surfactant, a dispersant, or a combination thereof; a water-soluble or water-miscible organic co-solvent; and water. The antioxidant blend consists of a primary antioxidant and a secondary antioxidant.

The invention relates to a copolyamide elastomer with a nitrogen-containing side group and a preparation method and application thereof, the copolyamide elastomer comprises a copolymer with a hard segment and a soft segment, and the soft segment is a polyether soft segment and / or a polyester soft segment; the hard segment comprises repetitive units as shown in a formula (1) and a formula (2), and a nitrogen-containing side group R3 is substituted or unsubstituted amino. The copolyamide elastomer disclosed by the invention is low in melting point and easy to form and process, has the characteristic of photoluminescence, can convert part of ultraviolet light into blue light, and has relatively high transmittance to visible light.

The invention relates to the technical field of insulating paint, in particular to insulating paint capable of preventing bird damage and foreign matter lap joint and a preparation method of the insulating paint. The invention provides an insulating coating for preventing bird damage and foreign matter lap joint. The insulating coating is prepared from the following raw materials in parts by weight: 55 to 80 parts of methylsilane modified polyurethane liquid, 23 to 40 parts of polyamide fiber nano powder, 10 to 20 parts of organic silicon modified calcium lignosulphonate suspension, 8 to 10 parts of hydrophobic silicon dioxide, 2 to 5 parts of flatting agent, 1 to 2 parts of pigment, 3 to 5 parts of anti-aging agent and 10 to 15 parts of diluent. The insulating property of the coating is extremely high, the withstand voltage value per millimeter can reach 40kV and above, while the withstand voltage value per millimeter of a conventional insulating coating is generally 18kV; and the insulating paint is high in strength and good in toughness, and has good hydrophobicity and hydrophobicity migration.

The invention discloses a heat-resistant stable perfluorosulfonic acid composite proton exchange membrane and a preparation method thereof, and relates to the technical field of proton exchange membranes. The perfluorosulfonic acid composite proton exchange membrane is composed of a perfluorosulfonic acid resin base membrane and a composite layer, the composite layer comprises aramid nanofiber (ANF), graphene oxide, sulfonated graphene and a core-shell structure inorganic phase (silicotungstic acid (at) SiO2), and a three-dimensional cross-linked network is formed through a gradient heat treatment process; and coating a perfluorosulfonic acid resin base membrane with the membrane casting solution, and carrying out gradient heat treatment after stepped drying to prepare the perfluorosulfonic acid composite proton exchange membrane. The perfluorosulfonic acid composite proton exchange membrane researched and developed by the invention solves the problems of mechanical strength attenuation and insufficient ion selectivity of a traditional proton exchange membrane in a high-temperature and high-humidity environment, and is suitable for energy equipment such as a fuel cell and a flow battery.