Light reflective material, reflective layer and preparation method thereof

Abstract

A light reflection material, a reflection layer and a preparation method thereof, the light reflection material comprises glass powder particles, diffuse reflection particles, ultrafine nanoparticles and an organic carrier; the particle diameter of the glass powder particles is ≤5 μm, and the diffuse reflection The particle size of the particles is 0.1 μm˜0.2 μm, and the particle size of the ultrafine nanoparticles is 0.01 μm˜0.05 μm. The present invention adopts glass powder particles, diffuse reflection particles, and ultra-fine nano-particles whose particle size decreases by an order of magnitude in turn as the raw materials of the reflective layer. Without reducing the adhesion between the reflective layer and the substrate, the reflective layer can be increased. Surface area that causes reflection or refraction, resulting in better reflectivity.

Description

technical field [0001] The invention relates to a light reflection material, a reflection layer and a preparation method thereof, belonging to the technical field of illumination and display. Background technique [0002] In the prior art, a reflective phosphorescent color wheel is a wavelength conversion device that can be used in a high-power laser light source device, and its performance can directly affect the performance of the laser light source. In order to improve the luminous performance of the inorganic luminescent color wheel, one of the main ways is to improve the reflective performance and thermal conductivity of the reflective layer in the luminescent color wheel. Since the reflective layer in the inorganic luminescent color wheel has a porous structure, increasing the reflective surface area in the porous structure, refining the pore size, and reducing the thickness are the main ways to improve the reflective performance and thermal conductivity. [0003] Gla...

AI Technical Summary

Problems solved by technology

However, the higher the content of reflective particles, the more difficult it is for the glass phase to become a continuous structure. The reflective particles lack objects for adhesion and bonding, and the reflective layer will be looser, easier to fall off, and poorer in thermal conductivity; The reflectivity will be reduced due to the reduction of reflective particles, that is, these two factors are contradictory

[0005] In addition, due to the limitation of processing technology, it is difficult to disperse finer particles in the slurry of glass powder + diffuse reflection particles + organic vehicle, because this slurry is often very viscous. The fine nano powder has a large specific surface area and a large surface energy. The organic carrier cannot effectively drive away the air on the surface of the ultrafine nano powder, which will cause more air bubbles in the slurry and make it difficult to mix. On the other hand, the addition of ultrafine nano powder For a long time, it will also affect the flow and interconnection of the softened glass during sintering

Images