8 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 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.

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.

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 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.

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.