19 results about "Crystal violet lactone" patented technology

The invention provides thermochromic microcapsules, thermochromic silica gel, a preparation method of the thermochromic silica gel and a physiotherapy pad. The thermochromic microcapsule comprises a core material and a wall material coating the outer surface of the core material, and the core material comprises stearic acid, crystal violet lactone and bisphenol fluorene. The wall material is formed by in-situ polymerization of an amino resin prepolymer on the surface of the core material. The bisphenol fluorene has a fluorene ring, and the fluorene ring is of a large-size and flat structure, so that the rigidity of bisphenol fluorene molecules is high. When the amido resin prepolymer is subjected to in-situ polymerization on the surface of the core material to form the wall material, part of bisphenol fluorene molecules can be embedded into a cross-linked network of the amido resin, and the rigid bisphenol fluorene molecules can well limit movement and rotation of amido resin polymer molecular chains; besides, in the polymerization process, bisphenol fluorene molecules can serve as cross-linking points to react with the amino resin prepolymer, different polymer chains are effectively connected, the cross-linking density of the wall material is improved, and the bisphenol fluorene molecules can effectively improve the mechanical strength and hardness of the wall material.

The invention discloses a thermosensitive intelligent device capable of regulating and controlling sunlight reflectivity in a large range and a preparation method of the thermosensitive intelligent device, and belongs to the field of intelligent materials and energy-saving buildings. The device is composed of an upper thermosensitive phase change layer and a lower sunlight reflecting layer. Wherein the lower layer takes polyvinylidene fluoride (PVDF) as a matrix, Al2O3 and SiO2 nanoparticles with two different sizes are doped, and a composite structure with a multi-stage scattering effect is formed through curing, so that the full-band sunlight reflecting capacity can be remarkably improved. And the upper layer is a reversible thermochromic interlayer formed by dissolving crystal violet lactone (CVL), bisphenol A and tetradecanol in a transparent substrate. The core mechanism is that at low temperature, the lower layer can serve as a light trap layer, light absorption of the upper layer is enhanced through multiple reflections, and the heating efficiency is improved; at high temperature, the upper layer becomes transparent, the overall reflectivity of the device is dominated by the lower layer, and efficient refrigeration is achieved. The device can regulate and control the sunlight reflectivity (greater than 60%) according to the environment temperature, and has a good application prospect in the field of energy conservation.

The invention discloses a temperature change process for tipping paper. The temperature change process comprises the following steps: step 1, preparing microcapsule slurry; step 2, preparing temperature change ink; step 3, pretreating a base material; the temperature change functional layer is prepared from the specific ternary core material of the crystal violet lactone, the bisphenol A and the saturated monohydric alcohol, accurate control over a specific color change temperature point and rapid and high-contrast reversible color development in a wide temperature range are achieved, meanwhile, the microencapsulation structure effectively isolates the influence of the external environment on the temperature change core material, and the temperature change core material has the advantages that the temperature change function layer is prepared, and the color change effect is good. The reversible frequency of color change is greatly increased, the performance attenuation is slow, the service life is long, and the surface energy of the substrate subjected to plasma treatment can be improved, so that the binding force is improved, and the temperature change functional layer is not easy to fall off.

The invention provides a laser-induced irreversible color-changing temporary protective coating as well as a preparation method and a use method thereof. The preparation process comprises the following steps: preparing a melamine-formaldehyde resin prepolymer; preparing a crystal violet lactone emulsion; preparing a crystal violet lactone microcapsule; performing graphene oxide modification to obtain photothermal conversion microcapsule powder; the photothermal conversion microcapsule powder, the waterborne polyurethane-waterborne acrylic acid composite emulsion, bisphenol A and other components are used for preparing the photosensitive functional coating. The prepared photosensitive functional coating can realize irreversible color change under laser irradiation, and can be matched with laser projection equipment to be used in operation processes such as positioning and hole making.

This invention relates to the field of cable technology, specifically to a moisture-sensitive color-developing mining cable, comprising a moisture-sensitive color-developing functional layer; the moisture-sensitive color-developing functional layer is composed of a matrix resin and a core-shell type moisture-sensitive color-developing agent; the core-shell type moisture-sensitive color-developing agent is composed of crystal violet lactone microcapsules and a polyionic liquid coating the outer layer of the crystal violet lactone microcapsules. The moisture-sensitive color-developing functional layer can effectively prevent power grid failures caused by internal water ingress after the cable is laid and the cable joint is sealed, and also improves the fire resistance of the cable.

The invention relates to the technical field of labels, in particular to a preparation method of a transfer anti-theft film-based EAS label, which comprises the following steps: S1, preparing a surface layer: selecting a PET film as a raw material for the surface layer, pretreating the PET film, and performing coating treatment on the surface of the PET film to obtain the surface layer; s2, preparing an isolating layer, wherein polyvinyl alcohol, nano silicon dioxide and aluminum-magnesium hydrotalcite are selected as raw materials of the isolating layer. In the preparation of the transfer anti-theft film-based EAS label, the surface layer forms a fluorine-silicon coating through the matching of methyltrimethoxysilane, heptadecafluorodecyl trimethoxysilane and epoxy silane, so that a physical barrier is formed, and a relatively good protection effect is achieved on the inner layer; and crystal violet lactone in the dye layer reacts with bisphenol A to generate a colored mark, and the colored mark can be rapidly cured to form an irreversible trace on the pasting surface, so that a relatively good anti-theft marking effect is achieved.

The invention belongs to the technical field of intelligent sensing materials, and particularly relates to an electric sensing coating, a coating, a preparation method, a curing method and application. The invention relates to an electric sensing coating. The coating comprises a matrix and a functional material dispersed in the matrix, the functional material comprises nematic phase liquid crystals, a crystal violet lactone-bisphenol A complex and a plasticizer; the matrix comprises a photosensitive polymer and a photoinitiator; phase separation can occur in the ultraviolet curing process of the electric sensing coating, so that the functional material forms a micron-sized confinement block in the matrix.

This invention discloses a reversible thermochromic composite material, belonging to the technical field of thermochromic composite materials. It is a multi-component system formed by using 2,6-monosubstituted linear phenolic resin as a color developer, combined with crystal violet lactone, a monohydric alcohol mixture, and natural rubber. The 2,6-monosubstituted linear phenolic resin is polymerized using bisphenol A, glyoxal, and glutaraldehyde as comonomers. The monohydric alcohol mixture is formed by mixing hexadecyl alcohol and octadecyl alcohol. This method minimizes interference with H+ while preserving the OH group. + The reversible thermochromic composite film prepared by using 2,6-monosubstituted linear phenolic resin (GA-BPA-GDA) as a color developer exhibits good thermal stability and recyclability.

The invention provides a TiO2 (at) MUF hybrid shell thermochromic phase change microcapsule as well as a preparation method and application thereof, and belongs to the technical field of functional energy storage materials. Comprising a core layer and a shell layer, the core layer is a thermochromic phase change system composed of crystal violet lactone, bisphenol A and n-tetradecanol, and the mass ratio of the crystal violet lactone to the bisphenol A to the n-tetradecanol is 1: (3-5): (60-70); the shell layer is an organic-inorganic hybrid layer formed by stearic acid modified nano TiO2 and melamine-urea-formaldehyde resin, and the mass ratio of the stearic acid modified nano TiO2 in the shell layer is 0.10-0.25%; the phase change enthalpy of the microcapsule is greater than or equal to 110 J / g, the 24-hour light aging fading rate is less than or equal to 20%, and the photothermal conversion efficiency is greater than or equal to 88%. The microcapsule disclosed by the invention can be applied to temperature indication, anti-counterfeiting encryption, intelligent coatings and functional fabrics, and is particularly suitable for the fields of solar energy utilization, electronic equipment heat dissipation and daily safety monitoring with high requirements on light resistance and energy storage stability.

According to the reversible thermochromic composite material based on the cellulose nanocrystals, the cellulose nanocrystals CNC serve as a base material, a molecular cross-linking reaction is generated through diammonium hydrogen phosphate, a biomass aerogel material with the high adsorption capacity and an ordered pore channel structure is successfully constructed, meanwhile, tetradecanol TD serves as a phase change material and a solvent, and the reversible thermochromic composite material based on the cellulose nanocrystals is obtained. Crystal violet lactone CVL and bisphenol A BPA are used as a color developing agent and a developing agent, and then the reversible thermochromic phase change material is prepared; meanwhile, the material has thermochromic performance, reversible performance and phase change performance. The preparation method comprises the following steps: 1, preparing CD aerogel; 2, preparing the reversible thermochromic phase change material; and 3, preparing the thermochromic phase change material with a reversible function.

The present application relates to the technical field of super-hydrophobic coating and self-adaptive thermal management, and particularly relates to a super-hydrophobic modified thermochromic temperature control coating and a preparation method thereof.A specific technical scheme is as follows: inspired by the self-adaptive color-changing temperature control mechanism of the skin of an angle lizard, a double-layer structure of a hydroxylated cerium dioxide enhanced radiation cooling bottom layer and a super-hydrophobic modified thermochromic phase change microcapsule intelligent response layer is constructed; a thermochromic phase change microcapsule is prepared by taking 20-30 DEG C phase change paraffin as a core material, crystal violet lactone-bisphenol A as a thermochromic system and melamine resin as a shell material, and after two-step super-hydrophobic modification of amination and fluorination, the thermochromic phase change microcapsule is compounded with hydrophobic silicon dioxide and epoxy resin to obtain an intelligent response layer coating, which is sprayed on the surface of the hydroxylated cerium dioxide / polyether sulfone radiation cooling bottom layer to be solidified to obtain a composite coating.The present application realizes efficient cooling of an outdoor building surface in summer, self-cleaning in a whole cycle, greatly reduces building energy consumption, has excellent weather resistance and durability, is convenient to construct and has significant engineering application value.

The invention discloses a preparation method and a use method of a 3D printed crystal violet lactone temperature monitoring label, and belongs to the technical field of material synthesis and indication products. The invention provides a preparation method of a 3D printed crystal violet lactone temperature monitoring label, and monitoring of different temperature thresholds is realized by utilizing a specific temperature phase change principle of an acid solvent and a crystal violet lactone acid color development principle; the label for temperature monitoring is designed in combination with the 3D printing technology, the temperature monitoring label provided by the invention is simple in preparation process flow and controllable in preparation cost, customized production can be realized according to actual monitoring requirements, and multi-scene temperature monitoring demands are met. The temperature monitoring label can provide real-time visual signal response for the temperature change of the transportation and storage environment through the color change of the inner circle.

The invention relates to the technical field of pigment preparation, in particular to a composite microcapsule color-changing pigment and a preparation method thereof, and the pigment is prepared from intelligent microcapsules, water-based acrylic resin, a coalescing agent and a thickening agent according to a specific proportion. The intelligent microcapsule adopts a multi-compartment structure, the core is a thermochromic microcapsule, a plurality of perfume release sub-capsules with different thermal response thresholds are fixed on the surface through chemical bonding, and selective perfume release based on temperature gradient is realized. The thermochromic compound is composed of crystal violet lactone, bisphenol A and a specific solvent, and excellent thermochromic performance is guaranteed. According to the design, multifunctional integration of the pigment is achieved, temperature response color change and staged fragrance release are achieved, and the pigment is widely applied to the fields of intelligent coatings and sensory materials and has remarkable innovativeness and practical value.

The invention discloses a multistage thermochromic RTV (Room Temperature Vulcanization) coating as well as a preparation method and application thereof. The coating consists of a thermochromic microcapsule, ammonium metavanadate and an RTV (Room Temperature Vulcanization) matrix. According to the microcapsule, methylated melamine-formaldehyde resin serves as a shell material, and a thermochromic core composed of crystal violet lactone, bisphenol A and docosyl alcohol is coated; ammonium metavanadate is dispersed in the matrix as a high-temperature irreversible color-changing agent. The coating presents reversible blue-light blue color change response within the range of 25-80 DEG C, and generates irreversible light blue-brown color change within the range of 90-180 DEG C, so that multi-stage visual monitoring of low-temperature real-time early warning and high-temperature accident recording is realized. The coating is simple and convenient in preparation process, can form a film after being cured at room temperature, has excellent color developing and temperature indicating effects, and is suitable for overheat monitoring and thermal damage tracing of electrical equipment, industrial devices and building surfaces.

The invention discloses a thermochromic microcapsule and coating for detecting thermally induced defects of an insulator and a preparation method of the thermochromic microcapsule. The thermochromic microcapsule adopts a ternary color-changing system composed of crystal violet lactone, phenolphthalein and octadecanol as a core material, and the color-changing temperature is accurately regulated and controlled through packaging of Arabic gum, melamine and formaldehyde wall materials; the coating is formed by compounding the thermochromic microcapsule and the electric anti-pollution flashover PRTV. The non-toxic phenolphthalein is creatively used for replacing a traditional bisphenol A color developing agent, the problem of dye leakage is solved in combination with microencapsulation design, and second-level quick response and reversible warning of insulator interface overheating are achieved. The coating has obvious color change when being triggered by temperature rise, is quickly recovered after power failure, has electrical insulation and environmental durability, provides an in-situ visual diagnosis means for hidden thermal defects of a power transmission line, and obviously improves the intelligent operation and maintenance efficiency of a power grid.

The present application relates to the technical field of pigment preparation, in particular to a kind of composite microcapsule color-changing pigment and its preparation method, the pigment is composed of intelligent microcapsule, water-based acrylic resin, film-forming aid and thickening agent according to specific proportion.Intelligent microcapsule adopts multi-compartment structure, core is thermochromic microcapsule, surface is fixed by chemical bonding multiple perfume release sub-capsules with different thermal response threshold, realize selective fragrance release based on temperature gradient.Thermochromic composite is composed of crystal violet lactone, bisphenol A and specific solvent, ensure excellent thermochromic performance.The design realizes the multifunctional integration of pigment, has temperature response color change and phased fragrance release, is widely used in intelligent coating and sensory material field, has significant innovation and practical value.

The invention discloses a reversible thermochromic flame-retardant mixture which is prepared by taking tetradecanol TD as a phase change material, a cosolvent and a surface modifier, crystal violet lactone CVL and bisphenol A BPA as an electron donor and an electron acceptor and nanoCaCO3 as a flame-retardant additive through a melt blending method. The preparation method comprises the following steps: 1, preparing a reversible thermochromic blend; and 2, preparing the reversible thermochromic flame-retardant mixture. The invention further discloses a reversible thermochromic composite material with the flame retardant property, delignification wood DW serves as a porous carrier, the reversible thermochromic flame retardant mixture CTBC is adsorbed through a vacuum impregnation method, and the reversible thermochromic composite material with the flame retardant property is obtained and has the phase change energy storage property, the reversible thermochromic property, the flame retardant property, the information storage property and the temperature self-response property at the same time. The preparation method comprises the following steps: carrying out first and second lignin removal treatment on poplar RW, carrying out freeze drying to obtain delignified wood DW, and carrying out vacuum impregnation on the DW in a CTBC blend.

This invention relates to the field of cable and wire technology, specifically to a smart cable with temperature-controlled color-changing warning function and its preparation method. The cable comprises the following raw materials in parts by weight: 100 parts cross-linked polyethylene, 5-15 parts additives, 3-8 parts additive B, 0.5-2 parts coupling agent, 0.3-1.5 parts antioxidant, and 20-40 parts thermoplastic polyurethane. In this invention, additive A uses crystal violet lactone and curcumin as temperature-sensitive color-changing units, which are encapsulated in a composite matrix using microencapsulation technology to achieve reversible color changes triggered by temperature, providing an intuitive overheat warning. Additive B uses a bio-fermented reactant as its core. The thiol-functionalized bio-reactant can act as a heat conduction medium and physical cross-linking point, effectively improving thermal response sensitivity and enhancing interfacial bonding with the matrix. This improves the cable's temperature-controlled color-changing response speed while enhancing the overall thermal stability and structural durability of the material.

The application provides a TiO2@MUF hybrid shell thermochromic phase change microcapsule and a preparation method and application thereof, and belongs to the technical field of functional energy storage materials. The microcapsule comprises a core layer and a shell layer, the core layer is a thermochromic phase change system composed of crystal violet lactone, bisphenol A and n-tetradecanol, the mass ratio of crystal violet lactone, bisphenol A and n-tetradecanol is 1:3-5:60-70, the shell layer is an organic-inorganic hybrid layer formed by stearic acid modified nano TiO2 and melamine-urea-formaldehyde resin, the mass proportion of stearic acid modified nano TiO2 in the shell layer is 0.10-0.25%, the phase change enthalpy of the microcapsule is greater than or equal to 110 J / g, the 24h light aging discoloration rate is less than or equal to 20%, and the light-heat conversion efficiency is greater than or equal to 88%. The microcapsule can be applied to temperature indication, anti-fake encryption, intelligent coating and functional fabric, and is especially suitable for solar energy utilization, electronic equipment heat dissipation and daily safety monitoring fields with high requirements for light resistance and energy storage stability.