30results about How to "Short discoloration time" patented technology

The invention relates to a reversible thermochromatic film based on graphene electrothermal driving, preparation and application of the reversible thermochromatic film. The reversible thermochromatic film comprises a heat source layer, a substrate layer and a chromatic layer. The preparation comprises the following steps: mixing reversible chromatic ink and water, obtaining reversible chromatic ink solution, then loading on the surface of a carrier film, drying to obtain reduced graphene oxide / carrier film / reversible thermochromatic film, connecting with a loop and obtaining the reversible thermochromatic film. The reversible thermochromatic film has the advantages of simple structure, higher sensitivity and better cycling stability.

The invention provides a photocuring gel electrolyte, an electrochromic device and a preparation method thereof. The photocuring gel electrolyte comprises a photocuring prepolymer resin, polymer matrix, a plasticizer, an electrolyte salt and an additive, the electrochromic device includes a substrate, a conductive layer, an electrochromic layer, an electrolyte layer and a conductive layer which are sequentially stacked, and the electrolyte layer is the photocuring gel electrolyte described above. The photocuring gel electrolyte is used, and has the advantages of easy operation and low cost onthe basis of ensuring ionic conductivity, and fast and convenient packaging is ensured. A production process is simple, the cost is low, and a process mode ensures that uniform film can be produced ina large area.

The invention relates to a method of driving an electrochromic device. Through detecting signals (such as temperature, time, power and current values) generated during the electrochromic process of an electrochromic element and driving the voltage value of the electrochromic element according to signal changes, the control mechanism can enable multi-stage voltage driving, and thus, when the electrochromic process of the electrochromic element is controlled repeatedly, the color of the electrochromic element is more uniform, the electrochromic time can be shortened, and the service life of the electrochromic element can be prolonged.

An electrochromic device includes: a first electrode unit including a first electrode layer, a plurality of spaced apart metal lines that are formed on the first electrode layer, and a plurality of insulator strips that cover the metal lines, respectively; a second electrode unit spaced apart from the first electrode unit and including a second electrode layer; and an electrochromic unit sandwiched between the first and second electrode units and including an electrochromic layer and an electrolyte layer. The electrochromic layer is formed on the first electrode layer. The arrangement of the first metal lead can be used to increase the conductivity of the first transparent conductive layer, and therefore the color-changing speed of the first electrochromic layer can be improved.

The invention discloses a metal target used for electrochromic glass and a preparation method and application method thereof. The metal target used for the electrochromic glass comprises a first metaltarget and a second metal target. The first metal target is one of metal tungsten, molybdenum, niobium or titanium. The second metal target includes nickel, chrome and lithium oxide, wherein the massratio of the nickel to the chrome to lithium oxide is 1:(0.05-0.3):(0.2-0.26). The preparation method of the metal target includes the preparation method of the first metal target and the preparationmethod of the second metal target; the preparation method of the first metal target includes the step that the target is made of one of the metal tungsten, the molybdenum, the niobium or the titaniumin a hot-pressing or canning hot isostatic pressing manner; and the preparation method of the second metal target includes the steps that the nickel, the chrome and the lithium oxide are mixed, sufficiently stirred for 22 h to 26 h and manufactured into the target in a hot-pressing or canning hot isostatic pressing manner. The metal target used for the electrochromic glass has the beneficial effects of being short in film forming time, high in production efficiency, low in target manufacture difficulty and suitable for mass production.

The invention relates to test paper for detecting the concentration of phthalic dicarboxaldehyde and a method for preparing the test paper. The method for preparing the test paper includes three portions of preparing mother liquor; pretreating filter paper; soaking and dyeing the filter paper. A color development principle for the filter paper includes that a certain quantity of solution can be adsorbed by the filter paper after the filter paper is quickly in contact with phthalic dicarboxaldehyde solution, all the phthalic dicarboxaldehyde adsorbed on the filter paper can be consumed by sodium hydrosulfite on the filter paper if the concentration of the phthalic dicarboxaldehyde is lower than a specified threshold (0.35%), and only a natural color (light blue) is presented; parts of the phthalic dicarboxaldehyde are consumed by the sodium hydrosulfite on the filter paper if the concentration of the phthalic dicarboxaldehyde reaches the specified threshold, quick reaction can be carried out on the remaining phthalic dicarboxaldehyde and a color developing agent (urea) on the test paper under the effect of a color development accelerator (diammonium phosphate), yellow can be presented, and yellow green can be presented after the yellow and the natural color (the light blue) of the test paper are overlaid on each other. The test paper and the method have the advantages that detection processes implemented by the aid of the test paper are easy and convenient to use, and accurate and reliable results can be obtained.

The invention provides a quick-response oxygen indicator and a preparation method thereof, belonging to the technical field of oxygen measurement. The preparation method provided by the invention comprises the following steps: preparing a buffer solution with a pH value of 11-12; preparing an aqueous solution of sodium iso-VC with a pH value of 11-12; mixing the buffer solution, aqueous solution of sodium iso-VC, alkaline rhodamine and Methylene blue is mixed to obtain a methylene blue-iso-VC sodium solution; the pH value of the methylene blue-iso-VC sodium solution is 11 to 12; then the methylene blue-iso-VC sodium solution is subjected to different treatments to obtain oxygen indicators in different forms to adapt to different uses. The oxygen indicator obtained by the preparation method provided by the invention has short response time, many repetition times and obvious color change.

The invention discloses a titanium dioxide-grafted carbon quantum dot-loaded spiropyran photochromic double material, a preparation method and application thereof, and belongs to the field of organic solid-state photochromic materials. The present invention loads spiropyran to titanium dioxide grafted fluorescent carbon quantum dots TiO 2 On ‑CQDs, through the pore size of the composite particles, the free volume of the molecular space of the spiropyran is increased, so that the spiropyran has enough space for ring-opening and ring-closing reactions in the solid state to improve the color-changing performance. In addition, the fluorescence emission wavelength range of carbon quantum dots overlaps greatly with the ring-opening absorption wavelength range of spiropyran, so that energy transfer can occur between carbon quantum dots and spiropyran, thereby improving the fluorescent color-changing performance of the material, and realizing the material's color change. Double color changing response has broad application prospects in the field of anti-counterfeiting.

The invention belongs to the field of food safety and discloses a device for detecting a pesticide based on automatic color change through utilization of a nucleic acid probe. A camera I, a camera II,a lighting system and a color change detection unit are mounted on an observation part holder. A control part is mounted in a control part holder. A lead storage battery is connected with a motor control board and raspberry pie and supplies power. The motor control board is in power connection with the raspberry pie, an electromagnetic valve, a relay and a water and a water and air dual-purpose pump. The supplies power to the relay, the electromagnetic valve and the water and air dual-purpose pump. The camera I and the camera II are connected with the raspberry pie through utilization of a USB cable. The camera I is used for observing a state of test film. The camera II is used for observing a color of reference film. The device is compact in structure. Color change time is short. Throughutilization of a flow channel designed by a color change unit, a color change period is reduced to about 50s. Photonic crystal film for modifying different nucleic acid aptamers can be replaced. Thedevice is wide in adaptability.

The invention belongs to the technical field of color-changing microcapsules, and relates to a preparation method of color-changing microcapsules that can be used in textiles and the color-changing microcapsules. Mix, heat and melt, add an emulsifier, stir at a constant temperature to disperse evenly, and obtain a dispersion; under high-speed stirring, add water to the dispersion, stir evenly, and obtain an emulsion; add a water-soluble free radical initiator to the emulsion, and control it at React at a certain temperature for a period of time, filter, wash, and dry to obtain color-changing microcapsules. The invention uses free radical polymerization at the water-oil interface to obtain the outer wall filled with nano-tourmaline, which can not only reduce the discoloration reaction time, but also increase the mechanical strength of the wall material, and has good application effect.

The invention discloses a sun-visor, which comprises a U-shaped buckle fixing assembly fixedly arranged on an original sun-visor, wherein a color changeable sun-visor body is fixed to the lower end of the U-shaped buckle fixing assembly; an angle more than 90 degrees and less than 180 degrees is formed between the U-shaped buckle fixing assembly and the color changeable sun-visor body; the lower buckle bottom of the U-shaped buckle fixing assembly is provided with a luminance adjusting turn-knob. The sun-visor not only can maintain the original sun-visor of the automobile but also can be assembled and disassembled conveniently; simultaneously, the sun-visor can change colors in hard light, so as to protect eyes of drivers preferably; and the color shade of the sun-visor can be set according to the visual habit of the drivers, and the color changing time is short. The excellent-performance sun-visor can be widely applied to vehicles such as automobiles, ships and the like.

The invention discloses a colorimetric sensing method for generating inorganic nanoparticles based on enzyme catalytic induction. The method comprises the steps: taking a frerric chloride solution, apotassium ferricyanide solution and an enzymatic solution, mixing, respectively adding the mixed solution into target solutions with known different concentrations, carrying out a reaction, quantitatively detecting by ultraviolet-visible spectroscopy to obtain the corresponding ultraviolet-visible absorbance values in all the concentrations, and thus obtaining a linear relationship between the target concentrations and the absorbance values; and adding a to-be-measured target solution to the mixed solution, detecting the absorbance value, and calculating to obtain the target concentration of the to-be-measured target solution. The method directly adopts Prussian blue as a colorimetric probe, and the constructed colorimetric sensing method has the advantages of being fast, simple, low in cost, high in sensitivity, good in selectivity and the like, has satisfactory results in application and has broad application prospects.

The invention discloses a metal target used for electrochromic glass and a preparation method and application method thereof. The metal target used for the electrochromic glass comprises a first metaltarget and a second metal target. The first metal target is one of metal tungsten, molybdenum, niobium or titanium. The second metal target includes nickel, chrome and lithium oxide, wherein the massratio of the nickel to the chrome to lithium oxide is 1:(0.05-0.3):(0.2-0.26). The preparation method of the metal target includes the preparation method of the first metal target and the preparationmethod of the second metal target; the preparation method of the first metal target includes the step that the target is made of one of the metal tungsten, the molybdenum, the niobium or the titaniumin a hot-pressing or canning hot isostatic pressing manner; and the preparation method of the second metal target includes the steps that the nickel, the chrome and the lithium oxide are mixed, sufficiently stirred for 22 h to 26 h and manufactured into the target in a hot-pressing or canning hot isostatic pressing manner. The metal target used for the electrochromic glass has the beneficial effects of being short in film forming time, high in production efficiency, low in target manufacture difficulty and suitable for mass production.

The invention discloses a preparation method of a TiO2 reflective electrochromic film. The preparation method comprises the following steps of: preparing Ti-MOF particles by using titanium salt and an organic ligand as raw materials, calcining to obtain micron-sized TiO2 particles with a specific pore structure, and loading the TiO2 particles on conductive glass through electrophoretic deposition to prepare the TiO2 reflective electrochromic film. The prepared TiO2 reflective electrochromic film has loose and porous surface morphology and is formed by stacking the micron-sized TiO2 particles with uniform particle sizes. The TiO2 reflective electrochromic film has a relatively large specific surface area and can establish a stable ion transmission channel, so that reaction active sites are more, the electrochemical reaction kinetic activity is high, and the electrochromic time is short. The TiO2 reflective electrochromic film has a wide application prospect in the fields of intelligent display, intelligent windows and the like.

The invention discloses a temperature sensing label which comprises release paper, a first pressure-reducing adhesive layer, an invariable ink layer, a first polyester film layer, a second pressure-reducing adhesive layer, a visual temperature coating layer, a second polyester film layer and an anti-ultraviolet film layer, which are sequentially stacked and laid. The visual temperature coating layer comprises at least one printing part, wherein the at least one printing part is used for printing thermochromic ink, and a temperature mark is formed on one part of the surface of the visual temperature coating layer. Compared with the prior art, the standard deviation of the color changing temperature of the temperature sensing label is relatively small, the color changing time is relatively short, and the temperature of a specific object can be visually recognized.

The invention discloses a corrugated box and a preparation method thereof, which belong to the field of cartons. A corrugated box includes a box body composed of corrugated cardboard. The corrugated cardboard includes outer transparent waterproof paper, corrugated paper and inner transparent paper arranged in sequence from outside to inside. Waterproof paper, a moisture-sensitive color-changing film formed by spraying a moisture-sensitive color-changing compound reagent is arranged between the outer transparent waterproof paper and corrugated paper. The color change of the color-changing film can detect whether there is water in the carton in time, so that the staff can deal with it in time to reduce the loss of goods; at the same time, the humidity of the corrugated paper and the humidity can be known through the color of the humidity-sensitive color-changing film. The maximum load-bearing strength of the lower box can strictly control the weight of the goods in the box, reduce the damage of the box due to excessive load-bearing during use, and ensure that the loss of goods is minimized.

The invention provides an electrochromic material and a preparation method thereof, and an anti-dazzling automobile rear-vision mirror prepared from the electrochromic material. The electrochromic material comprises a purpurine compound provided with an adjusting group; the adjusting group is R in a formula shown in the specification, and is a cation adjusting group; and R is one or more of groups shown in the specification. The anti-dazzling automobile rear-vision mirror prepared from the electrochromic material comprises a glass substrate, a conductive layer, an electrochromic layer, a conductive layer, a glass substrate, a reflecting layer and a protective layer in turn. The anti-dazzling automobile rear-vision mirror prepared from the electrochromic material has the color change time greatly shortened; meanwhile, the color is black after color change, and the problem of image distortion after the rear-vision mirror changes color is solved.