168results about "Thermosensitive paints" patented technology

The invention relates to the technical field of metal surface protection, and discloses a corrosion-resistant self-repairing metal fastener and a preparation method thereof.The corrosion-resistant self-repairing metal fastener comprises a zinc alloy matrix, a nanometer passivation layer, a slow-release corrosion-resistant layer and a self-repairing functional layer, and the nanometer passivation layer, the slow-release corrosion-resistant layer and the self-repairing functional layer sequentially wrap the zinc alloy matrix; the zinc alloy matrix consists of Al, Cu, Mg, Ce and Zn; the nano passivation layer adopts zinc phosphate / silane composite sol to construct a Si-O-P covalent bond network, and plasma is combined to graft epoxy groups to enhance the interface bonding strength; the slow-release anti-corrosion layer is used for loading a pH response type benzotriazole derivative through gradient aperture mesoporous silica, so that the dynamic controlled release of a corrosion inhibitor is realized; the self-repairing functional layer adopts a synergistic effect of a mechanical triggering type sulfydryl siloxane microcapsule and a pH triggering type EDTA chelating agent microcapsule to form a physical plugging-chemical passivation dual-mode repairing mechanism. Through four-stage cooperation of matrix modification, interface strengthening, slow-release regulation and control and intelligent repair, the corrosion resistance of the corrosion-resistant self-repairing metal fastener in a complex environment is remarkably enhanced.

The invention belongs to the technical field of super-hydrophobic coatings, and particularly relates to a thermochromic photo-thermal super-hydrophobic coating and a preparation method and application thereof. The thermochromic photo-thermal super-hydrophobic coating sequentially comprises a photo-thermal epoxy bottom layer, a thermochromic epoxy middle layer and a super-hydrophobic surface layer from bottom to top in the thickness direction. Wherein phase change microcapsules for packaging phase change materials are distributed in the photo-thermal epoxy bottom layer, and the surfaces of the phase change microcapsules are modified with polydopamine layers and MXene layers in a layer-by-layer self-assembly mode; thermochromic microcapsules are distributed in the thermochromic epoxy middle layer; the super-hydrophobic surface layer is of a micro / nano structure formed by a silane derivative. Through the multifunctional design of integrating photothermal conversion, phase change and thermochromism mechanisms, all-weather ice resistance / ice removal is achieved, the energy utilization efficiency is optimized through an intelligent temperature control mechanism, and a sustainable solution is provided for surface ice prevention in an extreme environment.

A composition includes an underfill comprising a polymer having monomer units with substituted Diels-Alder moieties and ester moieties. A first process includes obtaining an underfill comprising a polymer having monomer units with substituted Diels-Alder moieties and ester moieties. A second process includes providing a mixture that includes a curing agent and a monomer comprising substituted Diels-Alder moieties and ester moieties. The second process also includes curing the mixture to form the underfill. A third process includes providing a semiconductor device that includes the underfill. A semiconductor device includes the underfill.

The invention belongs to the technical field of graphene, and particularly relates to graphene leather capable of realizing temperature-sensitive color development and a preparation method of the graphene leather. As the graphene heating functional layer adopts the high-thixotropic silver paste, the printed circuit pattern is clear in edge, uniform in thickness and extremely high in consistency with the designed pattern; and a clear interface is formed between a silver paste circuit and leather fibers, and improper penetration is avoided. And the circuit resistance value consistency is excellent (the deviation is controlled within + / -5%), so that rapid, uniform and stable planar heating can be realized after the graphene heating layer is connected, and the local overheating hidden danger is perfectly eliminated. According to the present invention, the natural texture and the soft touch feeling of the leather are maintained while the efficient and safe heating performance with the visual color developing function is achieved.

The invention discloses a hydrophobic thermochromic nano core-shell structure coating and a preparation method and application thereof.The preparation method of the hydrophobic thermochromic nano core-shell structure coating comprises the steps that trimethoxysilane and deionized water are mixed and stirred, and a stock solution is prepared; adding the tungsten-doped vanadium dioxide nanoparticles into an alcohol-water mixed solution of deionized water and absolute ethyl alcohol, and stirring to prepare a vanadium dioxide solution; adding the stock solution and the vanadium dioxide supernatant into deionized water, adding an ammonia water solution, carrying out ultrasonic treatment, and adding acetone to terminate the reaction; centrifuging to obtain a core-shell nanoparticle solution sample; adding waterborne polyurethane into the sample, stirring, spin-coating and drying to obtain a color-changing coating; according to the coating, material oxidation is avoided by adopting a VO2 coated SiO2 core-shell structure, so that the intelligent window has thermochromic performance and hydrophobic performance at the same time, the heat transfer coefficient is increased, and a new thought is provided for promoting development of a spacecraft heat management technology.

The invention relates to the technical field of high-temperature-resistant coatings, in particular to a geopolymer-based reversible color-changing high-temperature-resistant material as well as preparation and application thereof. The geopolymer-based reversible color-changing high-temperature-resistant material provided by the invention comprises the following components in parts by weight: 60 parts of metakaolin, 60 parts of an alkali activator, 30-150 parts of BiVO4 and 30 parts of water, the invention aims to provide an environment-friendly high-temperature-resistant inorganic reversible thermochromic coating by taking a geopolymer as a base material and taking BiVO4 as a pigment filler. A coating further prepared from the geopolymer-based reversible color-changing high-temperature-resistant material provided by the invention is crack-free, has excellent water resistance and wear resistance, is environment-friendly and non-toxic, does not decompose at high temperature, and has excellent reversible thermochromic property.

This invention discloses a method for preparing a thermochromic composite coating with adaptive conductivity, comprising the following steps: The thermochromic material includes a base resin, thermochromic mixed pigments, fillers, and a solvent; the base resin, pigments, fillers, and solvent are mixed and stirred evenly to form a color paste; the color paste is then transferred to a high-speed ball mill for grinding and dispersion for 2 hours to obtain a thermochromic coating; the thermochromic coating is microencapsulated; the microencapsulated thermochromic coating and a nonlinear conductive filler are mixed and ball-milled; molten epoxy resin is added and stirred evenly; a curing agent and a diluent are added for dilution, and the mixture is thoroughly stirred to obtain a final mixture; the mixture is sprayed or brushed onto the surface of an insulating component to form a thermochromic composite coating with adaptive conductivity. The preparation method proposed in this invention is simple, feasible, and low-cost, and has broad application prospects.

The invention discloses an industrial packaging coating integrating anti-counterfeiting, antibacterial and pathogen detection functions and a preparation method thereof, and relates to the technical field of industrial packaging coatings. The coating is prepared from modified polyurethane acrylate, ethyoxyl ethyoxyl ethyl acrylate, 1, 6-hexanediol diacrylate, hydroxyethyl methylacrylate, trimethylolpropane triacrylate, epsilon-polylysine, carbon quantum dot-microencapsulated spiropyrane, a water-based flatting agent, 2, 4, 6-trimethyl-1, 3-pentanediol diacrylate, a water-based curing agent, a defoaming agent, a defoaming agent and a solvent. The cleaning agent is prepared from 2, 4, 6-trimethylbenzoyl diphenyl phosphine oxide, a dispersing agent, lauryl sodium sulfate, pathogen microcapsules and ethyl acetate. The three functions of anti-counterfeiting, antibiosis and pathogen detection are integrated into a single coating, the limitation that a traditional packaging material is single in function is broken through, the anti-counterfeiting reliability is improved, no harmful substance is migrated out, and efficient pathogen screening is achieved; safety standards are met, harmful substance migration is avoided, and the base material is matched with various base materials such as films and fibers and is mechanically strengthened.

The invention discloses an electric arc indication composition suitable for an insulator silicone rubber surface and a preparation method thereof, and belongs to the technical field of functional materials of electrical equipment. The composition comprises the following components in percentage by mass: 0.1-20% of main functional particles, 5-50% of a film-forming material, 60-80% of a solvent and 0-20% of an auxiliary agent, wherein the main functional particles are colored particles coated with Co3 (PO4) 2.8 H2O and ester materials or a combination of the Co3 (PO4) 2.8 H2O and the ester materials; according to the electric arc indicating composition, through the swelling effect of the solvent on the silicon rubber substrate and the synergistic reaction of all the components, the adhesive force and durability of the electric arc indicating composition on the low-surface-energy silicon rubber of the insulator are remarkably improved, and when an electric arc occurs on the surface of the insulator, generated local high temperature triggers the thermochromic combined material to generate irreversible color change; therefore, the position of arc generation can be recorded and indicated visually and permanently.

A filling material (151) for artificial ganoderma, comprising a plurality of particles (141) at least partially coated by a PCM shell layer (143) containing at least one PCM material, and a thermally conductive shell layer (145) formed on the PCM shell layer (143).

A thermochromic material comprising vanadium dioxide (VO2) nanoparticles dispersed on surfaces of larger scaffolding particles such as amorphous silicon dioxide (SiO2). The SiO2 particles prevent the vanadium dioxide nanoparticles, which are typically less than approximately 40 nm in size, from sintering into larger particles, thus giving the material advantageous properties. A base added to the vanadium precursor solution functionalizes the scaffolding particles. The size of the vanadium dioxide nanoparticles can be changed by changing the size of the scaffolding particles. The material can be dispersed in a coating, film, ink, plastic, or polymer.

The present disclosure relates to a detergent-coating agent composition comprising: a Group IVB metal in an amount of from 50 ppm to 8,000 ppm based on the total weight of the detergent-coating agent composition, and a Group IVB metal in an amount of from 50 ppm to 8,000 ppm based on the total weight of the detergent-coating agent composition; an electropositive metal; a builder comprising a phosphonate and / or a sugar alcohol; and a detergent-coating agent surfactant in an amount of from 50 ppm to 20,000 ppm based on the total weight of the detergent-coating agent composition. The present disclosure also relates to systems and methods for treating a substrate comprising any of the detergent-coating agent compositions disclosed herein and an electrodepositable coating composition. The present disclosure also relates to substrates treated by any of the detergent-coating agent compositions, systems and / or methods disclosed herein.

The present invention provides a reversible thermochromic composition which exhibits black color upon coloration and colorless color upon discoloration, and has excellent light resistance, by using a fluoran derivative having a specific structure as an electron-donating chromogenic organic compound, and a reversible thermochromic microcapsule pigment containing the reversible thermochromic composition. The means for solving the problem is a reversible thermochromic composition comprising: (a) a fluoran derivative having a specific structure as an electron-donating chromogenic organic compound, (b) a compound having a specific structure as an electron-accepting compound, and (c) a reaction medium which allows the electron transfer reaction between the (a) component and the (b) component to occur reversibly in a specific temperature range, and a reversible thermochromic microcapsule pigment containing the reversible thermochromic composition.

The invention relates to the technical field of reversible color-changing coatings, in particular to a reversible color-changing coating for temperature self-detection as well as a preparation method and application of the reversible color-changing coating. The reversible color-changing coating comprises the following raw materials: a reversible color-changing material, a room-temperature curing insulating coating, a heat-conducting filler and a dispersing agent, the reversible color-changing material comprises a long-chain alkyl alcohol solvent, a leuco agent and a gallic acid alkanol ester color developing agent. When the reversible color-changing coating is used, the reversible color-changing coating can be obtained only by coating the lap joint surface of the transformer bushing and curing at room temperature. The reversible color-changing coating disclosed by the invention is good in insulating property, excellent in heat-conducting property, convenient to use and remarkable in color change, and low-temperature light color and high-temperature dark color can be used for temperature self-detection of the lap joint surface of the transformer bushing of the transformer substation, so that inspection of inspection personnel is facilitated.

A label includes a flexible substrate comprising a first side and a second side. The first side is an adhesive, the second side is configured to be printed with a first visible mark, and the second side has a second printed, overlapping mark. The overlapping mark is configured to change opacity below a first transition temperature to obscure the visible mark.

The present invention relates to a package (10) for an aerosol product (1), comprising at least one coated surface area (11) and at least one uncoated surface area (12), wherein a coating (13) on the at least one coated surface area (11) of the package (10) is heat-sensitive, and the coating (13) indicates the application of heat by a permanent color change. The present invention also relates to an aerosol product (1) comprising such a package (10), and a method for manufacturing an aerosol product (1) comprising such a package (10) by printing a polymer on a portion of the package by flexographic printing.

The present invention provides a thermosensitive resin, an environmentally friendly thermosensitive plate and a preparation method thereof. The thermosensitive resin provided in the present application is an important binder in the thermosensitive coating forming the thermosensitive layer, namely, a functional film-forming resin, which can improve the water or fountain solution developing ability of the plate and the ability to resist the erosion of chemicals in the ink, so as to realize the image layer having a thermosetting urethane bond network structure, which can increase the wear resistance of the plate coating and improve the printing resistance of the plate. The environmentally friendly thermosensitive plate provided in the present application is hydrophilic and can realize water development or fountain solution development. It is a green and environmentally friendly thermosensitive plate. Through the thermosensitive resin, crosslinking agent and thermochromic dye with special structure, the sensitivity of the thermosensitive plate is improved, the dot restoration accuracy of the plate is improved; the printing resistance of the plate is improved, and the color restoration uniformity of the image layer is improved by improving the exposure tolerance; the developability and printing resistance of the plate are improved; the platemaking contrast of the plate is improved, and the problem of automatic plate recognition by computer is solved.

The invention belongs to the technical field of composite materials, and discloses a temperature-sensitive color-changing food-grade composite material as well as a preparation method and application thereof. The food-grade composite material comprises a metal foil and a modified HDPE film attached to one side or two sides of the metal foil. The modified high-density polyethylene, the temperature-variable microcapsule toner, the titanate coupling agent, the stearate and the nano aluminum oxide are used as main raw materials of the modified HDPE film, and through the synergistic effect of the components, the temperature-variable microcapsule toner is dispersed and stabilized, the compatibility of the temperature-variable microcapsule toner and a resin matrix is improved, and the thermal conductivity of the modified HDPE film is improved; the interface compatibility of the modified HDPE film and the metal foil and the color development performance of the toner are comprehensively improved, so that the prepared food-grade composite material film layer is high in peel strength, stable in color development and high in responsivity. The preparation method provided by the invention is high in processing adaptability and suitable for large-scale industrial production.

The present invention belongs to the technical field of coatings, and discloses a high-precision temperature warning coating material and a preparation method thereof. The coating material uses a composite resin as a paint base, and adds a diatomite-modified carboxymethyl cellulose / polyacrylic acid composite hydrogel loaded with a temperature-sensitive color-changing active component. The temperature-sensitive color-changing active component is a PdCl2 / MoCl5 dual-doped Ag3InCl6 metal complex, and metal doping improves the activity of the complex; the diatomite-modified carboxymethyl cellulose / polyacrylic acid composite hydrogel is used as a carrier to load the temperature-sensitive color-changing active component, and the modified hydrogel has better adsorption and sensing performance, improves the compatibility of the active component with the paint base, and is more sensitive to color change; polyisobutylene, alkyd resin, and polyester resin are used as a paint base to improve the wear resistance, chemical corrosion resistance, and weather resistance of the coating. The coating material prepared by the present invention has high temperature sensitivity, simple preparation process, and is environmentally friendly.

The present invention relates to a coating of the surface of a household article comprising a decoration (a) comprising a thermochromic pigment compound of formula BiOA1-xBx (I) where: - A and B are chosen from the group consisting of iodine, fluorine, chlorine and bromine, - A and B are different from each other, and - x is from 0 to 1.

Described herein is a multilayered paint film, which comprises in order: (i) a hard coat layer comprising a thermoplastic polyurethane having a hard segment content of 80 percent by weight or greater, wherein the thermoplastic polyurethane is a reaction product of: (a) a diisocyanate; (b) a polyol optionally comprising a cyclic structure; and (c) a chain extender, wherein at least one of the polyol or the chain extender comprises at least one side chain and at least one of the diisocyanate or the chain extender comprises a cyclic structure; (ii) a colored polymeric resin layer comprising a colorant, wherein the colored polymeric resin layer is 50-250 micrometers thick; and (c) an adhesive layer, wherein the adhesive layer comprises a pressure sensitive adhesive or a hotmelt adhesive. In one embodiment, the multilayered paint films may be used to cover parts for automotive and aerospace applications.

Self-limiting electrospray compositions including a non-charge-dissipative component and / or a charge-dissipative component. Self-limiting electrospray composition including a plurality of charge-dissipative components and excluding a non-charge-dissipative component. Methods for forming layers of self-limiting thickness. Methods for determining a conductivity of a material. Methods for repairing a flaw in a layer on a surface of an object.

Provided is a cover for an inductive heating cooker including a top plate provided with at least one crater, on which a cooking container is placed, and a working coil arranged on one side of each of the at least one crater of the top plate to inductively heat the cooking container. The cover includes a cover body interposed between the at least one crater of the top plate of the inductive heating cooker and the cooking container, and a high-temperature display part including a thermochromic layer made of thermochromic material and arranged on one side of the cover body, the thermochromic layer changing a color thereof to a first color below a predetermined temperature and to a second color, different from the first color, at at least the predetermined temperature.

Systems, devices, and methods for a cosmetic sponge having: a tip portion at one end of the cosmetic sponge; an angled portion, where the tip portion is surrounded by the angled portion; a bulbous portion, where the bulbous portion is disposed proximate a bottom of the cosmetic sponge; and a bottom portion, where the bottom portion is surrounded by the bulbous portion; and a thermochromic pigment in at least a portion of the cosmetic sponge, where the portion of the cosmetic sponge changes from a first color at a first temperature to a second color at a second temperature.

This invention relates to an adaptive radiation-cooling coating, comprising, from the inside out, a high-reflectivity primer layer, a thermochromic intermediate layer, and a semi-transparent topcoat layer with ultraviolet (UV) blocking and radiation-cooling functions; the thermochromic intermediate layer is colored below a set temperature value and colorless above the set temperature value. This invention combines the semi-transparent topcoat with UV blocking and radiation-cooling functions, the thermochromic intermediate layer, and the primer, placing the thermochromic intermediate layer between the transparent topcoat and the primer. This allows it to resist high temperatures and UV radiation in the environment. At low temperatures, the thermochromic intermediate layer forms a colored intermediate layer that absorbs solar wavelengths to increase the coating temperature; at high temperatures, the thermochromic intermediate layer becomes transparent, allowing solar wavelengths to pass through and be reflected by the high-reflectivity primer layer, thereby reducing the temperature of the coating system.

An infill material (151) for artificial turf, the infill material comprising a plurality of particles (141) covered at least partially by a PCM shell layer (143) containing at least one PCM material and a heat conductive shell layer (145) formed over the PCM shell layer (143).

A temperature-indicator product comprising a visual indicator comprising a thermochromic colour-memory composition and comprising an electron-donating colouring organic compound (A), an electron-accepting colouring organic compound (B) and reaction medium compound (C). The visual indicator comprises a first portion comprising a first thermochromic colour-change composition in its lower temperature state and a second portion comprising a second thermochromic colour-change composition in its higher temperature state. The product is useful as a tamper-evident indicator or as a freeze indicator.

A composition comprises a polymer, a wax, and a thermochromic material. The polymer may be a polyolefin, polylactic acid, polyamide (e.g. casein), ethylene-vinyl acetate, polyurethane, polyolefin, pol

The invention discloses a self-adaptive thermochromic anti-icing composite coating suitable for a wood material in an extremely cold region and a preparation method and application of the self-adaptive thermochromic anti-icing composite coating, and belongs to the technical field of wood material surface protection and functional coatings. The problems that an existing functional coating often has out-of-control permeation, weak interface bonding, cracking, peeling and rapid function attenuation on the surface of wood, and icing prevention and temperature regulation and control are difficult to stably achieve for a long time in an extremely cold environment are solved. The composite coating sequentially comprises a permeation curing interface layer, a photo-thermal-electric heating synergistic heat supply layer and a self-adaptive thermochromic super-hydrophobic regulation layer from the surface of a substrate to the top. The method comprises the following steps: 1, preparing the permeation curing interface layer; 2, preparing a photo-thermal-electric heating synergistic heat supply layer; and 3, preparing the self-adaptive thermochromic super-hydrophobic regulation and control layer. According to the application, the anti-icing and de-icing agent is applied to the environment temperature of-30 DEG C to 40 DEG C, and anti-icing, de-icing and temperature regulation and control of a wooden substrate are achieved.