116results about How to "Fast discoloration" patented technology

The invention provides a preparation method for an intelligent color changing window. The preparation method for the intelligent color changing window comprises the following steps: growing a conducting material on a substrate by adopting a chemical vapor deposition method to form a first conducting layer; growing transition metal oxides and a mixture thereof on the first conducting layer by adopting the chemical vapor deposition method to form an electrochromic layer; performing ion implantation on the electrochromic layer by adopting a two-electrode or three-electrode electrochemical method; growing oxides or inorganic solid state lithium salts on the electrochromic layer by adopting a method for performing lithiation on the electrochromic layer or the chemical vapor deposition method to form an ion conduction layer; growing the transition metal oxides and the mixture thereof on the ion conduction layer by adopting the chemical vapor deposition method to form an ion storage layer; growing the conducting material on the ion storage layer by the chemical vapor deposition method to form a second conducting layer; growing a protective layer on the second conducting layer to obtain the intelligent color changing window. The preparation method is low in production cost, and can prepare an electrochromic device on glass with a certain curved surface.

The invention relates to a method for preparing a nickel oxide electrochromic film by a hydrothermal method. The method comprises the following steps of: dissolving nickel acetate tetrahydrate in a mixed solution of alcohol and n-butyl alcohol, dropwise adding ammonia water to the mixed solution after the nickel acetate tetrahydrate is dissolved to obtain sol; coating the sol to the surface of FTO (Fluorine-doped Tin Oxide) conductive glass in a rotary manner, drying the sol to obtain the FTO conductive glass with a crystal seed layer; mixing the nickel acetate tetrahydrate, urea and a solvent to obtain a reaction solution; immersing the FTO conductive glass with the crystal seed layer to the reaction solution for carrying out hydrothermal reaction; keeping the reaction solution for 6 hours to 12 hours under the condition of 160 DEG C to 180 DEG C, cooling the reaction solution to the room temperature, cleaning, drying and roasting to obtain the nickel oxide electrochromic film. The preparation method disclosed by the invention is simple, low in cost and likely applied to the glass surface film-making industry. The nanometer structure nickel oxide film directly grows on the surface of the FTO conductive glass by a hydrothermal method, so that the nickel oxide and the substrate have better binding force for being beneficial to electron conduction. Meanwhile, the electrochemical stability of the film is also improved.

The present invention provides a urine wetting coloring hot melt adhesive for paper diaper. The urine wetting coloring hot melt adhesive is prepared from the following raw materials, by mass: 10-30 parts of a styrene thermoplastic elastomer, 20-60 parts of an acrylic acid terpolymer, 20-60 parts of a tackifying resin, 5-35 parts of a softener, 0.1-30 parts of a surfactant, 0.1-3 parts of an antioxidant, and 0.1-1 part of a humidity indicator. The urine wetting coloring hot melt adhesive has characteristics of low melt viscosity, contact angle of less than 40 DEG and good hydrophilicity, is suitable for low temperature coating, has characteristics of rapid color change, bright color and high strength after contacting water, and can be adopted as the urine wetting coloring hot melt adhesive of disposable hygiene products.

The invention relates to a preparation method of a spiropyrane photochromic optical material. The surface of the optical material prepared by adopting the preparation method is coated with a photochromic coating, the coating contains a polyurethane/spiropyrane/zinc sulfide composite multilayer photochromic material, a core of the coating is zinc sulfide mesoporous nano microspheres, an intermediate layer is a photochromic layer composed of spiropyrane compounds, and a shell is polyurethane; and the outer diameter of the composite microspheres is 50-350nm, the diameter of the zinc sulfate mesoporous nano microspheres is 30-250nm, the thickness of the intermediate layer is 5-25nm, and the thickness of the shell is 5-25nm. The optical material prepared by adopting the preparation method can become colored from colorless under ultraviolet irradiation condition, can also be rapidly faded to be colorless after ultraviolet rays disappear and has the advantages of strong fatigue resistance, good stability and high color-changing speed.

The invention discloses a photochromic nano composite microsphere and an application thereof. The photochromic composite microsphere has a three-layer composite core-shell structure, an inner core isa zinc sulfide mesoporous nano microsphere, a middle layer is a photochromic layer formed by a spiropyran compound, and an outer layer is polyurethane; and the outer diameter of the composite microsphere is 50-350nm, wherein the diameter of the zinc sulfide mesoporous nanosphere is 30-250nm, the thickness of the middle layer is 5-25nm, and the thickness of the outer shell is 5-25nm. The photochromic composite microsphere provided by the invention can be used to prepare a photochromic coating or doped into a resin optical material to prepare a photochromic material. The material can be changedfrom colorless to colored under the irradiation of ultraviolet rays, and after the ultraviolet rays disappear, the material can be quickly faded into colorless, and has the advantages of strong fatigue resistance, good stability, a fast color change speed and the like.

The invention provides reversible thermochromic anti-counterfeit paper. Thermochromic coatings are coated on the paper. The anti-counterfeit paper is characterized in that the thermochromic coatings are formed by mixing thermochromic capsules, fillers and sizing in a weight ratio of (10-20): (60-70): (15-18), wherein the thermochromic capsules comprise a solvent, an organic color former, a color-developing agent, an emulsifying agent and a shell material; the organic color former and the color-developing agent are added to the organic solvent to be dissolved, the emulsifying agent is added and the shell material is added after the mixture is dispersed to the needed granularity to prepare the microcapsules; and the emulsifying agent is maleic anhydride-styrene. The anti-counterfeit paper has the characteristics of aging resistance, fast color change (high sensitivity), thorough color change, rich color, difficulty in counterfeiting, low cost and the like.

The invention belongs to the fields of chemical engineering and materials, and particularly relates to the field of the electrochromic material, in particular to a Prussian blue composite photonic crystal (composite membrane) and a preparing method and application thereof. More specifically, an inorganic electrochromic material SiO2 composite photonic crystal is provided. Preferably, the inorganic electrochromic material is Prussian blue. The composite photonic crystal has high electrochromism performance.

The invention provides a quasi-solid electrolyte for a flexible electrochromic film, a preparation method of the quasi-solid electrolyte, a flexible electrochromic film and a preparation method of theflexible electrochromic film. The quasi-solid electrolyte for the flexible electrochromic film comprises PVB resin, a dispersing agent, inorganic lithium salt, nano inorganic particles and an auxiliary agent, and the molecular weight of the PVB resin is 60000-200000. The quasi-solid electrolyte disclosed by the invention is good in ionic conductivity, light transmittance, film-forming property and cohesiveness, and the assembled flexible electrochromic film has a relatively large discoloration range at a low voltage and is excellent in overall performance.

Surprisingly effective additive formulations for the reduction of highly undesirable yellowing or other discoloration of white, uncolored, polyurethane foam articles are provided. White polyurethane foam exhibits a susceptibility to yellowing and discoloration to a great extent, particularly in relatively short periods of time, than other types of polymeric articles. The inventive additives impart excellent low-discoloration properties over appreciable amounts of time of regular exposure to harmful elements, thereby according the pertinent industry a manner of providing white polyurethane foams for longer periods of time. Methods of producing such reliably white-colored polyurethane foams are also provided.

An electrochromic medium comprises a cathode electrochromic compound, wherein the structural formula of the cathode electrochromic compound is as shown in the specification, R1 is selected from normal alkyl or heterogeneous alkyl containing 1-20 carbon atoms; each of R2-R14 is independently selected from H, alkyl, cycloalkyl, polycyclic alkyl, aryl, heterocyclic alkyl, aromatic alkyl and alkaryl containing 1-50 carbon atoms or alkyl, cycloalkyl, polycyclic alkyl, aryl, heterocyclic alkyl, aromatic alkyl and alkaryl containing 1-50 carbon atoms and halogen, N, O, S, Si, P or unsaturated bond groups; X1<-> is selected from acetate anion, methyl phenyl acetate sulfonate anion, tetrafluoroborate anion, hexafluoroborate anion, tetraphenyl borate anion, trifluoro mesylate anion, perchlorate anion, bis-oxalate borate anion, oxalate difluoroborate anion, bis(trifluoromesyl) imide anion and tri(trifluoromesyl) methyl anion. The cathode electrochromic compound has the advantages that good electrochemical reversibility is achieved, fast color changing and good stability are achieved, the lowest value of visible light transmittance is small, and the like.

An embodiment of the present application provides an electrochromic device comprising an electrochromic element, wherein the electrochromic element enters a second state when a first voltage is applied to the electrochromic element in a state where the electrochromic element has a first state, and the electrochromic element enters a third state when the first voltage is applied to the electrochromic element in a state where the electrochromic element has a fourth state.

The invention discloses a photochromic and photo-luminescent nano microsphere with a core-shell structure and a preparation method thereof. The nano microsphere comprises an inner core and an outer shell, the inner core is an organic rare earth complex (rare earth luminescence centers are Tb and Eu, a first ligand is a benzoic acid compound comprising benzoic acid, p-methoxy benzoic acid and p-toluic acid, and a second ligand is phenanthroline), and the shell is coated with a layer of SiO2. The surface of SiO2 is grafted with a layer of high-molecular color-changing material, wherein a high-molecular main chain is a vinyl polymer (including polymethyl methacrylate, polyacrylic acid and polymethacrylic acid), and a color-changing unit on a branched chain is a spiro-pyrane photochromic unit, so that a composite multi-layer core-shell structure is formed. The nano microsphere is uniform in particle size, good in dispersity and good in thermal stability, can emit red, green and yellow fluorescence under ultraviolet irradiation, has long fluorescence life, high color change speed and long color retention time, and has important significance in serving as a clothing material.

The invention relates to a method for preparing an electrochromic device. The preparation method comprising the steps: (1), preparing a first transparent conductive layer; (2), preparing an electrochromic layer; to be specific, plating the surface of the first transparent conductive layer with an electrochromic film by using a plasma vacuum film-plating device to form an electrochromic layer; (3),preparing an ion conducting layer; (4), preparing an ion storage layer; to be specific, plating the surface of the ion conducting layer with an ion storage layer film by using a plasma vacuum film-platingg device to form an ion storage layer; (5), preparing a second transparent conductive layer; (6), preparing an ion barrier layer; (7), preparing an isolation layer; and (8), carrying out laser electrode etching. The method has the following advantage: the electrochromic device prepared by the preparation method has characteristics of wide discoloration range, high fading state transparency and fast discoloration speed.

The invention relates to preparation and application of oxygen indicators, and discloses a color-change indicator used for detecting oxygen, a synthesizing method thereof, an oxygen sensor and a preparation method of the oxygen sensor. The purpose is to solve the technical problems that an existing indicator for detecting the oxygen is complex in composition and preparation, response speed is low, and repeated usability is low. The indicator is an inclusion complex which is formed by subjecting N,N'-2 (alkyl carbamoyl methyl)-4,4'-bipyridyl halide and beta-cyclodextrin to self-assembling in a water solution. The preparation method includes the steps that CnBpyeaX2 and beta-cyclodextrin are dissolved in water to be heated to be clarified and then cooled to stand, and after the water is thoroughly evaporated, the indicator is obtained. The inclusion complex is supported on a matrix to be subjected to ultraviolet or natural light irradiation treatment to obtain the oxygen sensor, and the sensor is easy and convenient to prepare and operate, high in response speed, low in cost, good in light stability and capable of being repeatedly used and can be used for detecting oxygen inside air and food package.

The invention discloses a temperature change light-control material, which is composed of a thermo-sensitive substance, a light curable monomer, a photoinitiator, crosslinked water-absorbent resin, a polyhydroxy solvent, assistants and water. The temperature controlled sunshading photochromic glass containing the temperature change light-control material is prepared by conducting laminating, dispensing, filling, rolling, curing and edge sealing on the temperature change light-control material. The temperature controlled sunshading photochromic glass prepared by the method provided by the invention is an intelligent glass capable of adjusting the transmittance of ultraviolet, visible light and infrared ray by the environment temperature and solar radiation intensity dual conditions, has the characteristics of fast discoloration speed and long service life, can achieve the effects of warm in winter and cool in summer, and significantly improves the comfort degree of living space and office area.

The invention discloses a temperature sensitive ink, which comprises the following materials in parts by weight: 10 to 30 parts of temperature sensitive pigment, 20 to 60 parts of binder, 25 to 65 parts of solvent, 1 to 2 parts of calcium carbonate, 0.5 to 1 part of defoaming agent, 1 to 3 parts of leveling agent, 2 to 8 parts of 5A molecular sieve, 1 to 2 parts of fumed silica, 2 to 5 parts of dispersing agent and 0.5 to 1.5 parts of adhesion promoting agent. According to the invention, the adhesion of the ink can be enhanced, and the phenomenon of ink infiltration and inking can be prevented, the discoloration speed is quick, the chemical stability is strong, and the storage time is long.

The invention discloses electrochromic automobile glass with electric heating and electromagnetic shielding functions. According to the electrochromic automobile glass, a first glass layer, an electrochromic module, a first grid layer, a second grid layer, a bonding layer and a second glass layer are sequentially stacked in a thickness direction. The electrochromic automobile glass is characterized in that the first grid layer comprises a first transparent substrate and a plurality of first metal wires arranged in a parallel wiring mode, the first metal wires are distributed at the side, facing the electrochromic module, of the first transparent substrate, the second grid layer comprises a second transparent substrate and a plurality of second metal wires arranged in a parallel wiring mode, and the second metal wires are distributed at the side, facing the second glass layer, of the second transparent substrate. The electrochromic automobile glass can achieve the electromagnetic shielding function and the electric heating function simultaneously, and the electromagnetic shielding function is not limited by an electromagnetic radiation direction.

The invention relates to a foundation premix with color changing from shallow to deep. The foundation premix comprises titanium dioxide and inorganic pigment, the surface of titanium dioxide is treated by using (Cn'H2n'+1)aSi(OCmH2m+1)4-a (wherein n' is an integer and is greater than and equal to 1, m is 1 or 2, and a is an integer and is greater than or equal to 1 and less than or equal to 3), and the surface of the inorganic pigment is treated by using a compound treating agent comprising (CpH2p+1)bSi(OCqH2q+1)4-b (wherein p is an integer and is greater than and equal to 1, q is 1 or 2, and b is an integer and is greater than or equal to 1 and less than or equal to 3). The invention further relates to a preparation method of the foundation premix and the foundation composition comprising the foundation premix. The foundation composition has the advantages of controllable and quick color changing, high wettability, high covering ability, color diversity, safety, harmlessness, simple production process and high whiteness.

The invention discloses a tungsten oxide nano-belt structure electrochromic film preparation method, which specifically comprises: (1) dissolving a certain amount of secondary tungsten amino acid and oxalic acid dihydrate in anhydrous ethanol, and carrying out ultrasonic oscillation to obtain a reaction solution; and (2) immersing a FTO electric conduction glass in a hydrothermal kettle filled with the reaction solution, carrying out thermal insulation, naturally cooling to a room temperature, washing sequentially with water and ethanol, drying, and calcining to obtain the tungsten oxide nano-belt structure electrochromic film. According to the present invention, the one-step hydrothermal without the assistance of the crystal seed layer is used, such that the preparation process is simple, and the cost is low; and the obtained tungsten oxide nanometer structure directly contacts the surface of the FTO electric conduction glass, such that the resistance of the crystal seed layer on the electron transmission can be eliminated, the electron transmission efficiency can be improved, and the electrochromic property of the film can be effectively improved.

The invention discloses a color-changing resin spectacle lens and a preparation method thereof. A hardening layer and a vacuum coating color-changing layer are sequentially arranged on the front surface of a resin lens substrate. The vacuum coating color-changing layer sequentially comprises a first isolation layer, second to sixth organic color-changing layers and seventh to thirteenth anti-reflection coating layers from inside to outside. The second to sixth organic color-changing layers are sequentially composed of a benzopyran color-changing layer with the thickness of 130-150 nm, a fulgide color-changing layer with the thickness of 65-80 nm, a benzopyran color-changing layer with the thickness of 100-120 nm, a fulgide color-changing layer with the thickness of 80-95 nm and a benzopyran color-changing layer with the thickness of 180-200 nm from inside to outside. The method is completed by flash evaporation and vacuum spraying.

The invention discloses a teak discoloration treatment method, and relates to the technical field of wood treatment. The treatment method comprises the steps: (1) surface modification; (2) low-temperature plasma treatment; and (3) light treatment; according to the treatment method disclosed by the invention, teak is soaked in an isocyanato modified solution for treatment, so that auxochromes, such as carbon base, vinyl, methoxyl and carboxyl, in chromophoric groups of the teak surface are effectively reacted physically, and precipitation pigments of the wood surface can be dissolved to a certain extent; and at the same time, black streaks and spots can be removed effectively through active groups in the isocyanato modified solution, and the original color of the wood is diluted.

The invention discloses a method for making leaf carving painting, especially discloses a discoloration cleaning method for the leaf carving painting. The discoloration cleaning method for the leaf carving painting is characterized in that: appropriate oxyful solution or mixture solution of oxyful and ammonia is pasted on the dirty colored part of the stewed leaf to clean it or yellowing, redden, thin its color. The said leaf has been spray carved by squirt gun or been finished. The invention has abundant stable colors, good durability, light weight, good feeling. The mount method uses natural materials such as frame having natural veins, glass, cowhide rope and so on to combine, can be applied in various places.