209results about How to "Good discoloration effect" patented technology

The invention relates to an electrochromic fiber and a preparing method and application thereof. The preparing method includes the steps that a metal wire is used as an electrode, the surface of the metal wire is coated with a viologen electrochromic electrolyte solution through fiber continuous construction equipment, heating solidifying is carried out, then external electrodes and a protection layer are prepared on the outer side, and the electrochromic fiber is obtained. The electrochromic fiber prepared with the method has good flexibility and discoloration performance, electrochromic fibers of 100 m or above can be continuously prepared, the problems that the electrochromic fiber is complex in structure, and cannot be continuously prepared are solved, and the electrochromic fiber hasgood application prospects in the field of intelligent garments.

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 a humidity indicator which is really effective in environmental protection and comprises a carrier and solution used for soaking the carrier; wherein, the solution takes 30-80% of ethanol as a solvent and contains 0.00862-0.00992% of acid-base indicator and 0.8-13.8% of hygroscopic salt. The acid-base indicator is one of bromocresol green, bromothymol blue, thymol blue, thymolphthalein, bromophenol blue, methyl red, methyl orange, methyl yellow , neutral red and phenol red or the mixture thereof. The hygroscopic salt is alkali halide or alkali-earth metal halide. The humidity indicator of the invention has wide indicating range (capable of indicating 5-90% of ambient humidity) and high sensitivity. Diverse humidity indicators different in discoloration can be manufactured by adjusting the components. The humidity indicator of the invention has evident discoloration effect, simple use, reutilization, good suitability and extensive application.

The invention discloses a photochromic double-shell microcapsule and a preparation method and an application thereof. The photochromic double-shell microcapsule comprises an internal shell formed by a photochromic material and a shell body coating the internal shell, the shell body comprises an internal layer shell body formed by one or more of a polymer, long-chain saturated hydrocarbon and long chain saturated aliphatic acid, the shell body also comprises an external shell body covering external part of the internal layer shell body, the external shell body is a compact layer formed by one or more of a nonmetallic oxide, a metal oxide or salt of the metal oxide; the preparation method of the photochromic double-shell microcapsule is characterized in that the prepared single-shell microcapsule dispersion liquid is mixed and reacted to a prepared dispersion liquid of alcoxyl nonmetal, alcoxyl metal or a predecessor of metal salt, and the photochromic double-shell microcapsule is prepared by further processing. The photochromic double-shell microcapsule has hear resistance and chemical stability, and especially has stability to acid, alkali and an organic solvent.

The invention discloses a photochromic fiber making method which is realized by the following steps: (1) under vacuum conditions, drying light nylon slices with a low melting point, cooling to the room temperature, and excluding vacuum to discharge; (2) taking a certain quality of the dried nylon slices obtained by the step (1), adding a photochromic agent, a dispersing agent, a coupling agent, a heat stabilizer and an antioxidant, melting at 165 to 180 DEG C to prepare masterbatch; (3) taking the following raw materials by mass to mix: 70-90% of the nylon slices obtained by the step (1) and 10-20% of the masterbatch obtained by the step (2), and preparing photochromic POY (pre-oriented yarn) by melt spinning; and (4) drawing the photochromic POY to obtain the photochromic FDY (fully drawn yarn). The photochromic fiber is good in color changing effect, good in comprehensive application performance and low in production cost.

The present invention provides a polymer of Formula (4) or (5) as manufactured by polymerizing alkylmethacrylate of the formula (1) or its salt with 2-metacroxyethyl triammonium chloride of Formula (2) or vinyl monomer of phosphonium salt of the formula (3), and further provides a photochromic polymer matrix manufactured by blending the said polymer as the supporter with a known photochromic organic compound. Further, the present invention enables a glass or a mirror, of which the transmittance and/or the reflectance can be adjusted, to be manufactured by coating it with the said photochromic polymer matrix in a given thickness. In the case of the glass manufactured by using the matrix of the present invention, it can be used in the field requiring adjustment the transmittance of light depending upon a weather condition, including a building or a car glass, a sunroof and the like. In the case of the mirror manufactured so, it can be applied to a rear-view mirror and a side view mirror for a vehicle and the like.

The invention provides a spiropyrane photochromic coating and a preparation method thereof. The coating contains a polyurethane/spiropyrane/zinc sulfide composite multilayer photochromic material; aninner core of the coating is a zinc sulfide mesoporous nano-microsphere; an intermediate layer of the coating is a photochromic layer formed by a spiropyrane compound; a shell of the coating is polyurethane; the outer diameter of the composite microsphere is 50-350nm; the diameter of the zinc sulfide mesoporous nano-microsphere is 30-250nm; the thickness of the intermediate layer is 2-25nm; the thickness of the shell is 5-25nm. The photochromic coating prepared by the method can be used as a photochromic material or a surface color-changing layer of an optical lens; the coating is capable of changing from colorless to colored under irradiation of ultraviolet light, is also capable of rapidly fading to colorless after the ultraviolet light disappears, and has the advantages of high fatigueresistance, high stability, rapid color-changing speed and the like.

The invention discloses a novel lanthanum cyanurate composite PVC (polyvinyl chloride) heat stabilizer. A preparation method of lanthanum cyanurate comprises the following steps of: mixing lanthanum carbonate with nitric acid; stirring the mixture so that lanthanum carbonate is completely dissolved; boiling; filtering; and adjusting pH value to obtain lanthanum nitrate; adding lanthanum nitrate to cyanuric acid, heating and stirring to be uniform; then adding sodium hydroxide with appropriate solubility and continuing stirring for a certain time; and filtering, washing, dehydrating and drying to finally obtain lanthanum cyanurate. Lanthanum cyanurate serving as a heat stabilizer has good synergic effect with calcium stearate, zinc stearate and pentaerythritol and the heat stability of PVC can be improved by combined use of lanthanum cyanurate, calcium stearate, zinc stearate and pentaerythritol.

The invention relates to a making method of a NiO nano-crystalline electrochromic film, and belongs to the technical field of functional materials. The method comprises the following steps: preparing NiO nano-crystals through an injection technology, adding a proper amount of n-hexane, carrying out ultrasonic dispersion, and fully stirring to obtain stable ink; and making the NiO nano-crystalline electrochromic film through a Czochralski technology. The ink prepared in the invention is stable, can be used in large-area production of the NiO electrochromic film, provides a new idea for development of green and environmentally-friendly low-cost and high-chromic performance NiO electrochromic film technology, and can promote industrial rapid development of NiO electrochromic film materials and intelligent windows.

The invention discloses a cobaltless blue color-changing indicator, which comprises 0.01-0.1wt% of color indicator and a granular compound or mixture with a nano-sized microporous structure or adsorptive property, and is free of cobalt. The production method of the cobaltless blue color-changing indicator comprises the following steps of: (a) preparing the solution of a soaking carrier according to claim 3, and (b) enabling the carrier to contact the solution, and drying the carrier. The cobaltless blue color-changing indicator and the production method of the cobaltless blue color-changing indicator have the advantages that the cobaltless blue color-changing indicator can indicate humidity at a relative humidity of 5-90%, is high in sensitivity, and does not contain cobalt, copper, iron and other metal salts, so that the pollution to environment and the harm to human bodies can be eliminated from source; furthermore, the cobaltless blue color-changing indicator is accordant with conventional blue silica gel in appearance and color display and high in commercial value; and the humidity indicator provided by the invention is obvious in color changing effect, simple to use, capable of being repeatedly used for many times, and good in applicability, and has a very wide application range.

The invention discloses an embossing bicolor leather comprising a base cloth layer, a polyurethane foam layer coated on the base cloth layer and a crazy horse resin discoloration layer coated on the polyurethane foam layer. The upper surface of the bicolor leather is rough, and a plurality of crown parts and a plurality of groove parts are formed on the upper surface of the bicolor leather; and the surfaces of the crown parts are coated with a roller coating layer. Compared with the prior art, the bicolor leather is highly stereoscopic, and has double color and higher discoloration effect.

The invention discloses intelligent color-changeable sunglasses capable of switching mode and a sunglasses intelligent discoloration method. The sunglasses comprise a glasses frame, two glasses legs,two liquid crystal glasses lenses, a battery, a photosensitive interface, a power switch controller, a touch control interface, a USB interface and an integration control circuit board; and the photosensitive interface is provided with a photosensitive electronic element. The sunglasses intelligent discoloration method comprises the following steps of a step of switching a working mode by touchingthe touch control interface with a human hand and a step of calling a control regulation scheme of a corresponding working mode to regulate the blackness of the two liquid crystal glasses lenses. Inthe sunglasses intelligent discoloration method, switching between two working modes of an in-vehicle mode and an outdoor mode is realized through touch control, and different control and regulation schemes are adopted to perform control and regulation on the blackness of the two liquid crystal glasses lenses under different working modes, so that the contradiction of incompatibility of in-vehicleuse and outdoor use of the intelligent color-changeable sunglasses is solved, and a person, wearing the intelligent color-changeable sunglasses, can get the best color changing effect whether in thein-vehicle environment or in the outdoor environment.

The invention discloses a pH-sensitive allochroic inorganic material and a preparation method thereof. The preparation method includes compounding Li2CO3, ammonium polyphosphate, Al2O3, TiO2 and MnCO3to obtain LATP and LiMnPO4 ceramic powder, adding ethyl alcohol after mixing the LATP ceramic powder with 10-40% of LiMnPO4 ceramic powder, and performing ball grinding, drying and sieving to obtainmixed powder; adding binders into the mixed powder for pelleting, conducting preforming to prepare a blank, and calcinating the blank in an air atmosphere to prepare pH-sensitive allochroic ceramic; after direct calcination of the mixed powder in the atmosphere, subjecting the mixed powder to crushing, ball grinding and sieving to obtain pH-sensitive allochroic powder, mixing the allochroic powderwith other resin solutions or emulsion to obtain a pH-sensitive allochroic paint or film material. The prepared pH-sensitive allochroic inorganic material has the advantages of safety, reliability, simplicity in preparation process, economy and environment protection, and accordingly, industrial production can be realized.

The invention relates to a UV curable offset color changing ink as well as a preparation method and application thereof. The UV curable offset color changing ink comprises the following components bymass percentage: 1-3% of photochromic powder, 4-17% of light variable microcapsule toner, 10-30% of an epoxy acrylate oligomer, 20-60% of a polyester acrylate oligomer, 1-4% of flexible resin, 3-20% of a reactive diluent, 5-10% of a photoinitiator, 3-8% of an amine co-initiator, 2-8% of a filler, 0.5-2% of wax powder, 0.5-2% of spherical fine powder, 1-6% of a dispersant, 0.01-0.3% of an antifoaming agent and 0.2-0.6% of a leveling agent. The UV curable offset color changing ink provided by the invention has no solvent evaporation, is environmentally-friendly, pollution-free, fast in curing and high in efficiency, and has a reversible photochromic function after natural light and UV illumination and an excellent discoloration effect.

The invention relates to a matte discoloring long-wool printing treatment agent for synthetic leather. The matte discoloring long-wool printing treatment agent is composed of the following components: modified polyurethane resin, toluene, butyl ester, acetone, silica extinction powder, modified siloxane, amino silicone oil, methoxy silicone oil, polyurethane nanofiber and polytetrafluoroethylene wax powder. The invention further relates to a preparation method of the matte discoloring long-wool printing treatment agent. Compared with the traditional matte long-wool leather surface treatment agent, the matte discoloring long-wool printing treatment agent for the synthetic leather is used to process the surface of the synthetic leather to ensure that the surface of the synthetic leather achieves oily and delicate hand feel, excellent waxy feel, unique downy feel and strong discoloring effect.

The invention relates to a temperature-resistant variable-color short hair printing treatment agent for synthetic leather. The temperature-resistant variable-color short hair printing treatment agent comprises the following components: modified high temperature-resistant polyurethane resin, dimethylbenzene, butyl ester, acetone, silicon dioxide matting powder, modified organic silicon, polyurethane nano-fiber and modified high temperature-resistant polytetrafluoroethylene variable-color wax powder. The invention further relates to a preparation method of the temperature-resistant variable-color short hair printing treatment agent for synthetic leather. Compared with the existing treatment agent for ordinary synthetic leather, the leather surface treated by using the temperature-resistant variable-color short hair printing treatment agent for synthetic leather, disclosed by the invention, has unique fluffy sense, the tactile sensation is fine and comfortable, the temperature resistance is great, and the leather treated by using the treatment agent disclosed by the invention has the advantages of unique tactile sensation, good variable-color effect, obvious fluffy effect, strong true leather effect and excellent comprehensive effects.

The invention relates to the technical field of chemical stabilizers and in particular to preparation and application of a novel environmental-friendly cyanuric acid compound stabilizer special for a PVC profile. The preparation comprises the following steps: forming a basic catalyst by adopting caustic soda (sodium hydroxide), taking zinc oxide as a raw material, and directly reacting to produce cyanuric acid; neutralizing the basic catalyst by utilizing industrial stearic acid, taking the produced sodium stearate as a surfactant of zinc cyanurate; compounding an auxiliary stabilizer, a lubricating agent, an antioxidant, zinc stearate, calcium stearate and zinc cyanurate according to a set formula. Compared with the traditional heat stabilizer, the cyanuric acid is capable of improving the plasticizing quality of the PVC profile; due to the added lubricating agent, a phenomenon of flow velocity disorder occurring in material processing and production is avoided, so that production and processing can be normally performed, and the inherent quality and appearance quality are improved. Moreover, the stabilizer is environmental-friendly and non-toxic, has high heat stability and processability as well as wide application prospects in the PVC profile industry.

The invention relates to an MOFs (Metal Organic Frameworks)-based gel electrolyte and a preparation method and application thereof. The electrolyte comprises the following components: an MOFs materialand a transparent electrolyte. The preparation method comprises the following steps of preparing the transparent electrolyte; preparing MOFs pre-gel and preparing the MOFs-based gel electrolyte. Theelectrolyte overcomes the self defects of liquid and solid electrolytes, and has high transparency and ionic conductivity and good interface adhesion; an electrochromic device, especially a flexible device, assembled by the electrolyte is good in discoloration performance, excellent in mechanical property, resistant to bending, capable of being sheared and drilled, and even capable of stably working during bending-discoloration synchronous operation, and has extremely high practical application value.