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A dynamic optical coating with changing refractive index, its preparation method and application method

An optical coating and refractive index technology, which is applied in coatings, polyester coatings, polyamide coatings, etc., can solve the problems that limit the application of optical coatings, and achieve the effects of fast color response, simple process, and strong operability

Active Publication Date: 2021-03-09
广东省科学院生物与医学工程研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that extensive basic research on optical coatings has been done at home and abroad, but some traditional methods are mainly used to prepare static optical coatings, which greatly limits the further application of optical coatings in the world.

Method used

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  • A dynamic optical coating with changing refractive index, its preparation method and application method
  • A dynamic optical coating with changing refractive index, its preparation method and application method
  • A dynamic optical coating with changing refractive index, its preparation method and application method

Examples

Experimental program
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Effect test

Embodiment 1

[0036]Dissolve 3 parts by mass of polymer resin polyethylene, 3 parts by mass of polypropylene, 4 parts by mass of polystyrene, and 15 parts by mass of polylactic acid in 200 parts by mass of N,N-dimethylformamide and 200 parts by mass of dimethyl sulfoxide parts, 400 parts by mass of dichloromethane, 100 parts by mass of ethyl acetate, 50 parts by mass of dioxane and 50 parts by mass of water, to form a polymer solution with a mass volume concentration of 25g / L, using a pulling device , insert the ordinary glass sheet vertically into the solution at a certain speed (the speeds are 100mm / min, 200mm / min, 300mm / min, 400mm / min and 500mm / min), and immediately insert the ordinary glass piece vertically at the same speed. The glass sheet is pulled above the liquid level, so that the surface of the ordinary glass sheet is covered with a polymer coating, and placed in an environment with a humidity of 50% and a temperature of 90 degrees until the solution is completely evaporated and t...

Embodiment 2

[0038] 30 parts by mass of polymer resin polylactic acid, 10 parts by mass of polyvinyl chloride, 5 parts by mass of acrylonitrile-butadiene-styrene copolymer, and 5 parts by mass of polyurethane are dissolved in 650 parts by mass of chloroform, 300 parts by mass of tetrahydrofuran, In the mixed solvent of 10 mass parts of acetone, 20 mass parts of isopropanol, 20 mass parts of hexanaphthene, be made into mass volume concentration and be 50g / L macromolecular solution, adopt lifting device, polyethylene substrate is with certain speed ( The speeds are 500 mm / min, 550 mm / min, 600 mm / min, 650 mm / min and 800 mm / min) into the solution vertically, and immediately pull the polyethylene substrate vertically above the liquid level at the same speed, so that The surface of the polyethylene substrate is covered with a polymer coating, and placed in an environment with a humidity of 30% and a temperature of 150 degrees until the solution is completely evaporated and the coating is colorles...

Embodiment 3

[0040] 1 mass part of polymer resin polysulfone, 0.5 mass part of polyamide, 0.5 mass part of polybutylene adipate terephthalate, 7.5 mass parts of polymethyl methacrylate, styrene-butadiene-styrene 0.5 parts by mass of the block copolymer is dissolved in a mixed solvent of 500 parts by mass of dichloromethane, 200 parts by mass of chloroform, 250 parts by mass of ethanol and 50 parts by mass of water to form a polymer solution with a mass volume concentration of 10 g / L. Using a lifting device, insert the polyimide substrate vertically into the solution at a certain speed (the speeds are 200 mm / min, 220 mm / min, 240 mm / min, 260 mm / min and 280 mm / min), and then immediately Pull the polyimide substrate vertically above the liquid level at the same speed, so that the surface of the polyimide substrate is covered with a polymer coating, and placed in an environment with a humidity of 80% and a temperature of 45 degrees until the solution evaporates completely and the coating Colorl...

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Abstract

The invention belongs to the technical field of optical coatings, and discloses a dynamic optical coating with changing refractive index, a preparation method and an application method thereof. The method of the present invention comprises the following steps: dissolving the polymer resin in a mixed solvent to prepare a polymer solution; using the solution pulling method, inserting the base material into the polymer solution and pulling it above the liquid level, and placing it in a set After the solvent volatilizes in the humidity and temperature environment, a substrate coated with a polymer coating is obtained. The invention adopts the solution pulling method to prepare the optical coating, and controls the optical interference by adjusting the average refractive index and thickness of the polymer coating, thereby constructing an optical coating with a dynamically adjustable reflection spectrum. When the coating surface is dipped with a responsive solvent , the coating undergoes optical interference and appears iridescent. After the solvent evaporated, the coating returned to colorless and transparent, and the solvent-driven process was reversible. The method of the invention has simple process, strong operability and fast color response, and is expected to bring new breakthroughs in the field of optical coating applications.

Description

technical field [0001] The invention belongs to the technical field of optical coatings, and in particular relates to a dynamic optical coating whose refractive index changes, a preparation method and an application method thereof. Background technique [0002] Structural colors produced in nature are mainly caused by thin film interference, multilayer film interference, grating diffraction, light scattering, etc., such as opal, butterfly scales, beetle elytra, fish scales, peacock feathers, shells, and pearls. Among them, thin-film interference is one of the main ways to generate color in structures. The principle is that complex interference effects occur when light propagates in ultra-thin multi-layer thin-film structures to form specific reflection spectra, and then present different colors. Optical coatings are composed of a single layer or multiple layers of different materials. It mainly uses the optical interference effect and the inherent optical properties of mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/04C09D123/06C09D123/12C09D125/06C09D127/06C09D155/02C09D175/04C09D133/12C09D181/06C09D177/00C09D167/02C09D153/02C09D5/29C08J7/04C03C17/32C08L23/06C08L79/08C08L27/06
Inventor 刘海露陈骏佳谢东王珂李圆李发勇沈华艳黄瑶珠
Owner 广东省科学院生物与医学工程研究所
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