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Method for preparing light scattering film

A light scattering and thin film technology, which is applied in the coating process and coating of metal materials, can solve the problems of difficult dispersion, poor dispersion performance of dispersed phase particles, and decreased light transmittance of matrix materials, so as to achieve simple and easy-to-take materials , low cost effect

Inactive Publication Date: 2012-04-04
东莞上海大学纳米技术研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, most new light-scattering materials are produced by the blending method, but the preparation of light-scattering materials by the blending method will encounter poor compatibility between the particles and the matrix material, and it is not easy to disperse in the matrix material; the dispersion of the dispersed phase particles in the matrix Poor dispersion performance leads to a decrease in the light transmittance of the matrix material; the refractive index of the material is not easy to adjust, etc.

Method used

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  • Method for preparing light scattering film

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: a method for preparing a light scattering film of the present invention, which comprises the following steps:

[0024] (1) Dissolve the inorganic nano-powder in an organic solvent, use the physical dispersion method to prepare a stable and uniform organic phase sol, or replace the water phase sol with an organic solvent to form a stable and uniform organic phase sol as a spray coating liquid;

[0025] (2) A growth chamber is provided, and a vacuum system capable of making the growth chamber in a vacuum state is arranged in the growth chamber;

[0026] (3) A deposition substrate for fixing the base material to be sprayed with the light scattering film is arranged in the growth chamber, and the deposition substrate and the base material are in a heated state;

[0027] (4) Use the spray system to spray the spraying liquid toward the deposition substrate into the growth chamber. Due to the action of the vacuum system, the growth chamber is in a vacuum state, ...

Embodiment 2

[0037] Example 2, the method for preparing the light scattering film in this example is basically the same as that in Example 1, the difference is: in this example, methanol phase nano-zinc oxide sol with a concentration of 0.8% is used as the spraying liquid, and quartz glass is used as the spray solution. As the base material, the spray system is used to spray the spraying liquid into the growth chamber. The growth chamber uses a vacuum system to make the zinc oxide sol sprayed into it rapidly expand in volume and become mist, and has an initial velocity to fly to the deposition substrate; During the process, the solvent rapidly volatilizes, is pumped away by a high-speed vacuum pump, and is captured and recovered by a cold trap, while the solute forms a light-scattering film on the quartz glass substrate fixed on the heated deposition substrate. The light transmittance of the film was 89.1%, and the haze was 69.0%.

[0038] The spraying parameters are shown in Table 1:

[...

Embodiment 3

[0041]Example 3, the method for preparing the light scattering film in this example is basically the same as that in Examples 1 and 2, the difference is that: this example uses methanol phase nano-zinc oxide sol with a concentration of 0.3% and a nano-zinc oxide sol with a concentration of 0.3%. The methanol phase nano-silica mixed sol is used as the spray liquid, and ITO is used as the base material. The spray system is used to spray the spray liquid into the growth chamber. The growth chamber uses a vacuum system to make the instantaneous volume of the zinc oxide / silica sol sprayed into it. It expands rapidly to become fog, and has an initial speed of flying to the deposition substrate; during the flight, the solvent volatilizes rapidly, is pumped away by a vacuum pump with a large pumping speed, and is captured and recovered by a cold trap, while the solute is fixed on the heated deposition substrate. A light-scattering film was formed on the ITO substrate. The light transm...

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Abstract

The invention discloses a method for preparing a light scattering film. The method comprises the following steps of: (1) preparing a spray coating solution; (2) arranging a growth room and arranging a vacuum system for enabling the growth room to be in a vacuum state in the growth room; (3) arranging a deposit substrate for fixing a substrate material which needs to be spray-coated with the light scattering film in the growth room, wherein the deposit substrate and the substrate material are in a heating state; and (4) spray-coating the spray coating solution into the growth room towards the substrate by using a spray coating system, wherein due to the action of the vacuum system, the growth room is in the vacuum state, the spray coating solution spray-coated into the growth room is expanded volumetrically to form fog instantly and sharply and has an initial speed flying to the deposit substrate, in the flying process of the fogged spray coating solution, an organic solvent is volatilized sharply and pumped away by a vacuum pump with high pumping speed, and sol in a nanoparticle state, in the fogged spray coating solution, forms the light scattering film on the substrate material.

Description

technical field [0001] The invention relates to a preparation process of thin film materials, in particular to a method for preparing light scattering thin films by using vacuum spraying technology. Background technique [0002] A light scattering material refers to a material that allows light to pass through and scatters it effectively. If the uniformity of the medium is destroyed, that is, there is a large difference in optical properties between adjacent small pieces of the medium with a scale of the order of wavelengths, under the action of light waves, they will become secondary wave sources with large differences in intensity. With a certain optical path difference, after the coherent superposition of the secondary waves, in addition to the light propagating according to the laws of geometric optics, there are more or less light in other directions. This is scattered light, that is, scattering occurs. [0003] Light transmittance and haze are the two main indicators ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/00
Inventor 施利毅袁帅周才龙赵尹王竹仪刘立方建慧
Owner 东莞上海大学纳米技术研究院
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