89results about "Thermosensitive paints" patented technology

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 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.

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 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.

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.

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.

The invention belongs to the technical field of state detection and safety monitoring of power equipment, and particularly relates to a coating material for rapidly positioning a GIL short-circuit point and a preparation method of the coating material. The irreversible thermochromic coating comprises the following raw materials in percentage by weight: 35-45% of resin, 15-30% of monoethanolamine, 10-20% of calcium carbonate, 0.1-5% of PE wax, 0.1-5% of water and 15-25% of irreversible thermochromic microcapsules, the irreversible thermochromic microcapsules comprise a core liquid and a wall material, and the mass ratio of the core liquid to the wall material is 1: (3-4). The coating material provided by the invention can trigger irreversible color change by utilizing local temperature rise of a short-circuit point when a GIL short-circuit fault occurs, so that a permanent developing mark is formed on a pipe gallery shell, the coating material for quickly, intuitively and accurately positioning the short-circuit point is realized, and the coating material has good weather resistance, adhesive force and stability so as to meet the long-term operation and inspection requirements of a GIL system.

This invention relates to the field of thermochromic coating technology, and discloses a method for preparing thermochromic coatings and a window film for their application; comprising the following steps: Step 1: Sodium dodecyl sulfonate and polyvinylpyrrolidone are uniformly mixed at a mass ratio of 1:(0.3~0.4) to obtain a surfactant; Step 2: Modified polyurethane and acrylic resin are added to a solvent, heated and stirred at 50~60℃ for 1~2 hours, and surfactant, pigment, thermochromic microcapsules, defoamer, and plasticizer are added sequentially, and mixing is continued for 40~60 minutes to obtain a thermochromic coating; the polymer material is melt-extruded, biaxially stretched, shaped and cooled to obtain a base film; the pressure is set to 0.8~1N / cm. 2 At a speed of 1~2m / min, the thermochromic coating is evenly applied to the base film and dried at 60~70℃ to produce a smart window film, which can effectively reduce energy consumption.

The invention belongs to the technical field of powder coatings, and particularly relates to a temperature-sensitive color-changing powder coating and a preparation method thereof. The invention aims to solve the problems that the color changing function of the existing temperature-sensitive powder coating is difficult to maintain and the white fog phenomenon exists. The preparation method comprises the following steps: blending a coating precursor, a low-temperature temperature-sensitive microcapsule and a high-temperature temperature-sensitive microcapsule to obtain a coating matrix; performing electrostatic spraying on the coating substrate to obtain a coating precursor; carrying out melt leveling treatment on the coating precursor, and then carrying out low-voltage electrostatic spraying on cured resin to obtain a coating base film; and carrying out curing crosslinking treatment on the coating base film to obtain the temperature-sensitive color-changing powder coating. The prepared temperature-sensitive color-changing powder coating is good in color-changing function durability and capable of effectively inhibiting the rime fog phenomenon.

The application provides a moisture-curing quick-drying type HFG weather-resistant insulating paint and a preparation method and application thereof, and relates to the technical field of paint. The paint comprises the following raw materials: 40-50% end alkoxy high-branched fluorosilicon resin, 0.5-1.0% N-(beta-aminoethyl)-gamma-aminopropyl trimethoxysilane, 3-5% thermochromic microcapsules, 0.02-0.05% graphene, 0.5-1.5% fluorinated boron nitride nanosheet, 5-10% hollow glass microbead, 3-6% fluorinated spherical SiO2, 0.1-0.3% fluorocarbon surfactant, 2-3% defoaming agent, 2-3% leveling agent, and the rest is propyl propionate / dimethyl carbonate azeotrope solvent. The moisture-curing quick-drying type HFG weather-resistant insulating paint can realize surface drying within 3 minutes through a self-spraying tank mode only by relying on ambient air humidity, has good insulating performance, temperature visualization, high environmental protection, high environmental applicability, and is suitable for the scenes of live-line repair of power equipment and non-power-off spraying.

The present disclosure is a body temperature detecting marker for checking body temperature of animals, comprising a display member; a coupling member configured to be capable of being separated from or coupled to the display member; and a color-changing member located between the display member and the coupling member and containing a thermochromic pigment that discolors to a different color or becomes transparent in a predetermined temperature range, wherein the display member is at least partially transparent or translucent so that a color change in the color-changing member is visible.

The invention relates to the technical field of coating preparation, and discloses a conductive variable-temperature coating and a preparation method thereof.The preparation method comprises the steps that a hysteresis type solvent diffusion field is established, and the diffusion coefficient of a solvent in a microcapsule shell is limited in a non-equilibrium state interval through the steric hindrance effect; constructing a skin-core gradient modulus interface which is soft outside and hard inside, and partially embedding the multi-walled carbon nanotubes into the outer surface of the shell in a viscoelastic state by utilizing radial counter-acting force provided by a glassy-state framework in the shell; injecting deionized water to induce vitrification shrinkage of the surface of the shell, and generating volume shrinkage stress to mechanically occlude and fix the multi-walled carbon nanotubes; according to the preparation method disclosed by the invention, a mechanically-interlocked conductive network is constructed on the surface of the microcapsule through a non-equilibrium state gradient plasticizing and quenching locking process, so that the problems that the microcapsule is easy to damage and the conductive filler is easy to fall off in a traditional blending process are solved.

The invention discloses a metal organosilane thermochromic coating as well as a preparation method and application thereof, and belongs to the technical field of organosilicone and thermochromism. According to the technical scheme, room-temperature vulcanized methyl silicone rubber, imidazole silane and a cross-linking agent are stirred and mixed to be uniform, a cobalt ion alcoholic solution is added for stirring and mixing, then a catalyst is added for uniform mixing, curing is conducted at the room temperature, and the metal organosilane thermochromic coating is obtained. The cobalt ions and the imidazole silane are mixed in a liquid phase to prepare the coating, different color changing effects are generated due to the fact that the coordination state of the cobalt ions and the imidazole silane is influenced by temperature changes, reversible thermochromism can be achieved at the temperature of 40-60 DEG C, and color changing response is rapid. A full-liquid preparation and mixing mode is adopted, a thermochromic material does not need to be additionally prepared and added, and the preparation method is simple, convenient and efficient.

The invention discloses temperature-sensitive fluorescent coating ink based on triplet state-triplet state annihilation up-conversion as well as a preparation method and application of the temperature-sensitive fluorescent coating ink. The ink is composed of a polymer substrate material, silicone rubber polymer nanoparticles loaded with triplet state-triplet state annihilation up-conversion fluorescent dye and a solvent, a temperature-sensitive fluorescent coating is formed on the surface of an electronic component through a dispensing method, a spin coating method, a blade coating method or a spraying method, and a uniform fluorescent film is prepared; exciting the fluorescent film by using laser; a photoluminescence signal is collected through a confocal light path, and spectrum analysis is carried out through a monochromator; the method comprises the following steps: performing micro-area scanning on a fluorescent film on the surface of a measured object by controlling a displacement table or a galvanometer, and capturing spectral information of each pixel point; and according to a pre-calibrated temperature-spectrum relation curve, reconstructing a micro-scale two-dimensional or three-dimensional temperature distribution diagram of the chip in a working state. According to the invention, non-contact and high-resolution real-time temperature imaging of a chip working state microcell is realized, and a key technology is provided for temperature anomaly detection, thermal management optimization and failure analysis of a miniature electronic component.

The invention relates to the technical field of intelligent response materials, in particular to a reversible color-changing pearly-luster thin film material and a preparation method thereof.The thin film material is formed by laminating a bottom layer, a middle layer and a top layer in a cholesteric liquid crystal polymer network layer, the bottom layer contains a right-handed chiral dopant and a functional nano mica sheet, and the basic structure characteristics are given; a photoresponse chiral switch, a thermochromic microcapsule and a conductive nano filler are introduced into the middle layer, so that multiple response functions of light, heat and electricity are realized; the top layer contains a levorotatory chiral dopant, an ultraviolet absorbent and a light stabilizer and provides environmental protection and stability, a structural color is generated through a spiral superstructure formed by molecular self-assembly, and a color changing mechanism is based on continuous change of molecular orientation and screw pitch.

The invention discloses a reversible thermochromic coating and a preparation method thereof, and belongs to the technical field of thermochromic materials, the coating is of a sandwich structure, and the coating sequentially comprises an adhesive layer, an H-SiO2-EPCM functional layer and a protective layer from bottom to top; the H-SiO2-EPCM functional layer is formed by mixing an H-SiO2 photon nano pigment and an organic phase change material; the H-SiO2 photon nano pigment is a silicon dioxide nanosphere with a hollow structure, an amorphous carbon layer exists on the inner wall of a shell layer of the silicon dioxide nanosphere, and a rough and disordered superstructure is arranged on the surface of the shell layer; the organic phase change material is formed by mixing organic fatty acids, and the organic fatty acids comprise lauric acid, myristic acid, palmitic acid and stearic acid. The coating is prepared through spraying, has excellent mechanical and chemical stability and wide substrate adaptability, and has application value in the fields of dynamic anti-counterfeiting, personalized health monitoring, drinking water safety early warning, electronic equipment thermal risk monitoring and the like.

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

Provided is a golf mat comprising: a mat base providing an installation space having a predetermined area; a grass part formed in a mat shape composed of a plurality of individual grass blades, installed on the mat base, and providing a bottom surface on which a golf ball is placed; a color-changing part formed on at least a portion of the individual grass blades constituting the grass part, the color-changing part providing a color-changed region on the bottom surface of the grass part by changing to a predetermined color when reaching a predetermined temperature; and a temperature control part installed under the grass part, disposed under the color-changing part, and controlling a temperature of the color-changing part by providing heat of a predetermined temperature.

THERMAL TRANSFER RIBBONS AND DIRECT THERMAL PRINTING SUBSTRATES INCLUDING AN INDICATOR MATERIAL FOR ENVIRONMENTAL EXPOSURE. The invention relates to a thermal paper for environmental exposure prepared by a process comprising the steps of: adding reversible thermochromic pigments to an acrylic binder and an aqueous-based solvent to create a reversible thermochromic formulation, the thermochromic formulation being configured to change color state from blue to colorless in response to exposure to temperature above a threshold temperature of 18°C; and coating the thermal paper with the reversible thermochromic formulation. Figure for abbreviation: None

The invention provides a preparation method of multifunctional butyronitrile protective gloves, which belongs to the technical field of protective articles and comprises the following steps: respectively preparing inner latex containing a composite antibacterial agent, middle latex containing nano iron-manganese dioxide core-shell particles and outer latex containing a mesoporous composite carrier, an oil-proof agent and antibacterial peptide; and a temperature-sensitive color-changing coating liquid containing a temperature-sensitive color-changing microcapsule. Immersing the pretreated hand mold into a coagulator, drying, then sequentially immersing into inner-layer latex for applying an electrostatic field to enable an antibacterial agent to be directionally enriched, middle-layer latex for preventing nano iron powder from being oxidized through nitrogen protection and outer-layer latex, and drying after each layer of latex is immersed, so as to form a three-layer functional adhesive film. And spraying a temperature-sensitive color-changing coating liquid on the surface of the outermost layer of the adhesive film, and drying to finally complete the preparation of the protective gloves. The preparation method of the multifunctional butyronitrile protective gloves is excellent in protective effect, firm and stable in adhesive film adhesion, long in service life and good in product quality.

The application relates to a thermally irreversible self-sensing color-changing anticorrosive coating for thermal fault detection and a preparation method thereof, and relates to the field of anticorrosive materials. The application aims at solving the problems of unstable color-changing performance, poor stability and color-changing durability of existing thermal color-changing materials. The application comprises the following steps: (1) adding nickel ammonium sulfate hexahydrate into an organic solvent A to obtain a mixed solution; then adding a colorant and a chromogenic agent to form a colored mixed solution; finally adding ammonium ferrous sulfate hexahydrate, uniformly mixing through ultrasonic, and vacuum drying to obtain a color-changing filler in a gel state; (2) adding graphene oxide into a N,N-dimethylformamide dispersion solution of nano titanium dioxide, and then preparing a titanium dioxide modified graphene oxide anticorrosive filler through a hydrothermal method; and (3) adding the color-changing filler into an epoxy resin emulsion to form a colored emulsion; slowly adding the modified graphene oxide anticorrosive filler to obtain an anticorrosive emulsion; and adding a film-forming aid and a curing agent to obtain the thermally irreversible self-sensing color-changing anticorrosive coating.

The present application belongs to the technical field of super-hydrophobic coating, and particularly relates to a thermochromic photo-thermal super-hydrophobic coating, a preparation method and application thereof. The thermochromic photo-thermal super-hydrophobic coating comprises, from bottom to top along the thickness direction, a photo-thermal epoxy bottom layer, a thermochromic epoxy intermediate layer and a super-hydrophobic surface layer. The photo-thermal epoxy bottom layer is distributed with phase change microcapsules encapsulating phase change materials, and the surface of the phase change microcapsules is sequentially self-assembled with a polydopamine layer and a MXene layer. The thermochromic epoxy intermediate layer is distributed with thermochromic microcapsules. The super-hydrophobic surface layer is a micro / nano structure formed by a silane derivative. The present application realizes all-weather anti-icing / de-icing through the multifunctional design of integrating photo-thermal conversion, phase change and thermochromic mechanisms, optimizes the energy utilization efficiency through the intelligent temperature control mechanism, and provides a sustainable solution for surface anti-icing in extreme environments.

[Problem] To provide: a reversible thermochromic composition that has excellent contrast between a colored state and a colorless state and also has excellent lightfastness; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition. [Solution] A reversible thermochromic composition that includes (a) an organic electron-donating coloring compound, (b) a combination of compounds that have a specific structure and serve as electron-accepting compounds, and (c) a reaction medium that reversibly allows an electron transfer reaction to occur between component (a) and component (b) in a specific temperature range; and a reversible thermochromic microcapsule pigment that encapsulates the reversible thermochromic composition.

The invention discloses a super-hydrophobic coating with double functions of refrigeration and heat release and a preparation method of the super-hydrophobic coating. The dual functions of refrigeration and heat release are realized by preparing a reversible thermochromic microcapsule through an in-situ polymerization method. The preparation method specifically comprises the following steps: firstly, preparing a reversible thermochromic microcapsule through an in-situ polymerization method; secondly, reversible thermochromic microcapsules and a super-hydrophobic technology are combined, and the super-hydrophobic coating with the refrigeration and heat release dual functions is prepared through a phase separation method. And finally, coating the surface of a substrate with the coating through a spraying process, and curing to form the super-hydrophobic coating with dual functions of refrigeration and heat release. According to the preparation method of the super-hydrophobic coating with the refrigeration and heat release functions, the super-hydrophobic coating has the super-hydrophobic characteristic, and meanwhile, the super-hydrophobic coating has the annual photo-thermal deicing / radiation refrigeration effect.

The invention provides a thermochromic aerosol and a preparation method thereof. The thermochromic aerosol is prepared from the following raw materials in parts by mass: 20 to 40 parts of film-forming resin, 5 to 10 parts of thermochromic microcapsule pigment, 0.5 to 1 part of flatting agent, 0.5 to 1 part of defoaming agent, 0.3 to 0.5 part of anti-settling agent, 0.2 to 0.4 part of heat stabilizer, 0.5 to 1 part of adhesion promoter, 0.5 to 1 part of wetting dispersant, 30 to 50 parts of organic solvent and 25 to 35 parts of propellant. Wherein the propellant comprises one or more of a dimethyl ether propellant and a liquefied petroleum gas propellant. According to the thermochromic aerosol disclosed by the invention, the film-forming resin, the thermochromic microcapsules, the propellants and other functional aids in specific parts by mass are matched, and all the preparation raw materials act together, so that the thermochromic aerosol has good compatibility; the prepared thermochromism has the advantages of fast and accurate color change response and good storage stability.

The present invention relates to a sol-gel coating on the surface of a household product, which comprises at least two decorations (a) and (b) arranged between or in its layers, (a) being a (Bi 1-x A x )(V 1―y M y ) A decoration comprising at least one thermochromic pigment composition in the form of particles consisting of an O4 type pigment and optionally additives, where x is 0 or between 0.001 and 0.999, y is 0 or between 0.001 and 0.999, A and M are selected from the group consisting of nitrogen, phosphorus, alkali metals, alkaline earth metals, transition metals, minor metals, semimetals or lanthanides, A and M being different from each other; (b) A decoration comprising a temperature-indicating pigment composition.

The present invention relates to a membrane (1) comprising a waterproof layer (2) having opposing top and bottom surfaces and a weld quality indicator (3) placed on one of the opposing surfaces of the waterproof layer (2) wherein the weld quality indicator (3) comprises one or more discontinuous lines substantially parallel and adjacent to the edges (e1, e2) of the waterproof layer (2), wherein the one or more discontinuous lines are formed by a series of spaced-apart areas (on the surface of the water repellent) covered 10 with an ink comprising a thermochromic system.