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Self-healing nanocomposite film with structural color and its preparation method without changing color with viewing angle

A nanocomposite, viewing angle technology, applied in the field of nanocomposite films and nanocomposite films with structural color, can solve the problems of limiting the application of structural color materials, lack of high mechanical stability, etc., to improve color durability and enhance light scattering Effect

Active Publication Date: 2019-02-19
HEBEI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned materials lack high mechanical stability, and it is difficult to withstand the inevitable damage of external forces during use, such as cutting, scratching or even low-intensity friction.
In the prior art, structural color materials that can be automatically repaired after being damaged by external forces and whose color does not change with the viewing angle have not been reported, which severely limits the practical application of structural color materials

Method used

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  • Self-healing nanocomposite film with structural color and its preparation method without changing color with viewing angle
  • Self-healing nanocomposite film with structural color and its preparation method without changing color with viewing angle
  • Self-healing nanocomposite film with structural color and its preparation method without changing color with viewing angle

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Experimental program
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Effect test

Embodiment 1

[0028] The surface is modified with octadecyl lipophilic monodisperse silica latex particles with a particle size of 190 nm, carbon black with an average particle size of 25 nm, and the mass ratio of the particles to the monodisperse latex particles is 0, 0.00125, 0.0025 , 0.005, 0.01, polydimethylsiloxane containing amino groups at the end, the content of which is 0.5:1 in mass ratio to monodisperse latex particles, and dimethyl silicone oil with a viscosity of 10 mPa.s, whose content is The mass ratio of polydimethylsiloxane with amino groups at the end is 1:1, dispersed in chloroform to form an emulsion (the mass fraction of monodisperse latex particles is 20 wt%), and the obtained emulsion is heated at a temperature of 20 °C After fully drying, a self-healing blue nanocomposite film with structural color can be easily obtained. After adding carbon black, the saturation of the blue color increases, and the blue color continues to deepen with the increase of the amount of ca...

Embodiment 2

[0030] The surface is modified with hexadecyl lipophilic monodisperse silica latex particles with a particle size of 235 nm, carbon black with an average particle size of 25 nm, and the mass ratio of the particles to the monodisperse latex particles is 0, 0.00125, 0.0025 , 0.005, 0.01, polydimethylsiloxane containing amino groups at the end, the content of which is 0.5:1 in mass ratio to monodisperse latex particles, and dimethyl silicone oil with a viscosity of 10 mPa.s, whose content is The mass ratio of polydimethylsiloxane with amino groups at the end is 1:1, dispersed in chloroform to form an emulsion (the mass fraction of monodisperse latex particles is 40 wt%), and the obtained emulsion is heated at a temperature of After fully drying at 20°C, a self-healing green nanocomposite film with structural color can be easily obtained. After adding carbon black, the saturation of green color increases, and the green color deepens continuously with the increase of carbon black c...

Embodiment 3

[0032] The surface is modified with eicosyl lipophilic monodisperse silica latex particles with a particle size of 270 nm, carbon black with an average particle size of 100 nm, and the mass ratio of the particles to the monodisperse latex particles is 0, 0.00125, 0.0025 , 0.005, 0.01, polydimethylsiloxane containing amino groups at the end, the content of which is 0.5:1 with the mass ratio of monodisperse latex particles, and dimethyl silicone oil with a viscosity of 10mPa.s, whose content is The mass ratio of polydimethylsiloxane with amino groups at the end is 1:1, dispersed in chloroform to form an emulsion (the mass fraction of monodisperse latex particles is 40 wt%), and the obtained emulsion is heated at a temperature of 20 °C and fully dried, a self-healing red nanocomposite film with structural color was easily obtained. After adding carbon black, the saturation of the red color increases, and the red color deepens continuously with the increase of the amount of carbon...

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Abstract

The invention discloses a self-repairing nano composite film with a color not changed with a viewing angle and with a structural color and a preparation method of the nano composite film. The nano composite film is formed by dispersing a monodisperse latex particle unordered array and carbon black in self-repairing polymer gel containing dimethyl silicon oil. The preparation method comprises the following steps: dispersing and mixing monodisperse latex particles, carbon black, self-repairing polymer gel containing dimethyl silicon oil into an organic solvent so as to form emulsion, and fully drying the emulsion at 5-60 DEG C so as to obtain the nano composite film. The color of the nano composite film with the structural color can be regulated and controlled according to the particle sizes of the monodisperse latex particles, and the color depth of the nano composite film with the structural color can be regulated and controlled according to the adding amount of carbon black. The preparation method is low in cost, simple in operation and good in universality. The composite film disclosed by the invention has good color and color uniformity and can be applied to the fields closely related to color, such as full color display, pigment detection and chemical / biological detection.

Description

technical field [0001] The invention relates to a nanocomposite film, in particular to a self-repairing nanocomposite film with structural color that does not vary with the viewing angle, and belongs to the technical field of display material preparation. Background technique [0002] Structural color materials have the characteristics of never fading, non-toxic, environmentally friendly and unique optical properties, and have attractive applications in the fields of pigments, display, detection, and high-performance optical devices. Due to Bragg diffraction, the color of structural color materials with highly ordered periodic structures often changes with the viewing angle, so it is not conducive to its application in color-related fields such as pigments and displays. In order to solve this problem, scientists have developed structural color materials with disordered or quasi-disordered structures, and the colors caused by their structures can not change with the viewing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08L83/04C08K9/04C08K3/36C08K3/04C08K3/22C08J5/18
CPCC08J5/18C08J2383/04C08J2383/08C08J2483/04C08J2483/08C08K2201/003C08K2201/011C08L83/04C08L83/08C08L2203/16C08L2205/02C08K9/04C08K3/36C08K3/04C08K2003/2275C08K2003/2296C08K2003/2237
Inventor 周金明韩鹏王建红张国福魏雨
Owner HEBEI NORMAL UNIV
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