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

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 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 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 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 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.