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63results about How to "Improve the color change effect" patented technology

Photochromic microspheres and preparation method thereof

The invention discloses photochromic microspheres with excellent thermal stability and a preparation method of the photochromic microspheres. The method comprises following steps: 1), a polymer or oligomer, a photochromic compound, an antioxidant, an ultraviolet absorbent and a sensitizer are swollen in an oil-soluble solvent with low boiling point; 2), after being heated to certain temperature and stirred and dissolved into uniform oil phase, a mixture is added to an aqueous solution containing an emulsifier and a co-emulsifier, and an oil-in-water type stable emulsion with emulsion droplet particle size range being 10 nm-1000 mu m is obtained through shearing emulsification; 3), the temperature of the emulsion system is increased and kept for a period of time, the low-boiling-point solvent in emulsion droplets is completely volatilized, polymer microspheres with uniformly dispersed photochromic molecules are obtained, and dry polymer microsphere powder with the uniformly dispersed photochromic molecules can also be directly prepared from the emulsion with a spray drying process. The microspheres prepared with the method are of a homogeneous solid structure, excellent in mechanical property and good in heat stability and have great application prospect in the fields of anti-counterfeiting, plastic products, fabric clothing, chemical printing and dyeing and the like.
Owner:TIANJIN POLYTECHNIC UNIV

Traffic alarm mark line based on humidity sensing color changing technology and construction method thereof

InactiveCN107503300AReduce deceleration awarenessModerate stimulationTraffic signalsRoad signsScreen printingAntioxidant
The invention discloses a traffic alarm mark line based on the humidity sensing color changing technology and a construction method thereof. The mark line is composed of a humidity sensing color changing layer on the upper layer, an alarm pattern layer on the middle layer and a prefabricated mark line layer on the lower layer; the prefabricated mark line layer adopts one-line prefabricated mark lines; alarm patterns are drawn on the prefabricated mark line layer, and after drying is performed, the alarm pattern layer is formed; at the room temperature, a humidity sensing color changing coating, carbonate powder, mineral oil and antioxidant are uniformly mixed according to the mass ratio being 25:1:1:2, and the humidity sensing color changing material is obtained; after the humidity sensing color changing material and water are uniformly mixed under the room temperature according to the mass ratio being 25:1, the mixture coats the alarm pattern layer through a screen printing technology, after drying is performed, the humidity sensing color changing layer is formed, and alarm mark lines are obtained. When the road is dry, the mark lines are white, and the stimulation degree to the driver is appropriate; when the road is slippery, the mark lines are changed into the striking alarm color, the 3D visual effect is shown, and the early warning effect on the driver is achieved.
Owner:HEBEI UNIV OF TECH

Photochromic micro-nano capsule with solid capsule core and preparation method of photochromic micro-nano capsule

The invention discloses a photochromic micro-nano capsule with solid capsule core and a preparation method of the photochromic micro-nano capsule. The photochromic micro-nano capsule is characterizedby using a solid photochromic composite material as the capsule core. The preparation method includes steps of 1), swelling and dissolving polymer, photochromic dye, an antioxidant, an ultraviolet light absorber and a sensitizer in an oil-soluble solvent to obtain an oil phase, adding into a water solution containing an emulsifier and a co-emulsifier, and performing shear emulsifying to obtain anoil-in-water type stable emulsion; 2), adjusting emulsion temperature to 30-70 DEG C, adjusting emulsion pH, and adding a proper amount of amino resin or etherification modified amino resin solution at constant speed; 3), heating to a certain temperature and keeping stirring to obtain the micro-nano capsule; 4), adjusting the pH value of the prepared micro-nano capsule suspension to be about 7, and performing suction filtration and washing; 5), drying and thermally treating the capsule. The photochromic micro-nano capsule and the preparation method thereof have the advantages that the thermalstability of the capsule reaches over 300 DEG C, the mechanical performance of the capsule is obviously improved, and the capsule is applicable to fields such as fiber processing, textile and garment,chemical printing and dyeing and plastic products; the preparation method is simple in process and capable of achieving industrial production.
Owner:TIANJIN POLYTECHNIC UNIV

Preparation method of polyaniline electrochromic film

InactiveCN107382094AImprove the color change effectImproving Color Changing Performance Electrochromic EfficiencyCoatingsSolubilityComposite film
The invention relates to a preparation method of a polyaniline electrochromic film, belonging to the field of preparation of photoelectric materials. According to the preparation method, a solution is prepared by compounding ammonium persulfate and potassium monopersulfate; a polyaniline material with good water solubility is prepared by carrying out emulsion polymerization in a water phase; polyaniline is effectively dispersed and compounded with sodium tungstate sol; polymerization reaction is carried out under the connecting action of polyvinyl alcohol, and a compound material which has a crosslinked network structure and is in a stable state can be formed; in the compound material, a synergetic system is formed by a cathode component WO3 and an anode component polyaniline, so that a firm chemical bond is formed, the electrochromic property and electrochromic efficiency of a composite film are improved, and the surface of the film is improved; after the preparation method is adopted, nanofibers are neatly arranged, microchannels are uniform, the injection and extraction of electrons and ions are facilitated, and the electrochromism of the composite film is more easily realized; furthermore, the polyvinyl alcohol effectively improves the film-forming property of the material, improves the film density and further improves the material stability.
Owner:常州市泰英物资有限公司

Thermochromic anti-pollution flashover silicone rubber composition

The invention discloses a thermochromic anti-pollution flashover silicone rubber composition which comprises the following components in percentage by mass: 0.1-20% of a color-changing functional particle composition; 30-70% of a polymer-based adhesive; 1-20% of a reinforcing filler; 15-55% of an electric corrosion resistant filler; 0-30% of other inorganic filler; 0.2-10% of silicone oil; and 0.1-5% of a silane coupling agent. The device is used for preparing the anti-pollution flashover coating or the umbrella skirt of the insulator, the surface damage part of the insulator caused by current leakage and electric arc can be displayed on line, accurate positioning of defects is achieved, a maintainer and an unmanned aerial vehicle can conveniently find problems in time, the anti-pollution flashover coating of the insulator is maintained in time or the umbrella skirt is replaced in time, and pollution flashover accidents are prevented. When the anti-pollution flashover coating or the umbrella skirt of the insulator is damaged by high temperature such as leakage current and electric arc, the color of the heat discoloration particles changes quickly, so that the coating has obvious chromatic aberration, and the defect part of the insulator is displayed.
Owner:BEIJING GUODIAN FUTONG SCI & TECH DEV

Automobile LED lamp assembly with atmosphere lamp function

The invention discloses an automobile LED lamp assembly with the atmosphere lamp function. The automobile LED lamp assembly comprises an assembly shell, wherein cooling pipes are fixedly connected to the different side positions of an upper end and a lower end of the assembly shell correspondingly, the cooling pipes penetrate through the assembly shell and extend to an inner cavity, and a sealing cover plate is fixedly connected to a front face of the assembly shell; a reflective mirror is fixedly connected to the middle of the sealing cover plate, the sealing cover plate is of a sealing structure, a fixed through pipe is fixedly connected to the middle of the back face of an inner cavity of the assembly shell, a rotating device is fixedly connected to a front face of the fixed through pipe, and a four-edge reflective cone is fixedly connected to an end, away from the fixed through pipe, of the rotating device; the invention relates to the technical field of lighting devices. According to the automobile LED lamp assembly with the atmosphere lamp function, cooling oil is injected through the cooling pipes on the two sides, the cooling effect of the assembly is achieved, meanwhile, in the cooling process, the transparent oil body cannot affect propagation and color types of normal light rays, and the color distinguishing degree of the assembly is improved.
Owner:HIMA LIGHTING TECHNICAL CO LTD
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