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Light diffusion plate and preparation method thereof

A light-diffusing plate and light-diffusing particle technology, which is applied in optics, optical components, instruments, etc., can solve the problems of impact resistance decline and other problems, and achieve the effect of improving impact strength, high impact strength, and increasing interaction

Active Publication Date: 2018-04-13
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a light diffusion plate and a preparation method, aiming to solve the problem of the decrease of the impact resistance of the light diffusion plate after adding micron-sized light diffusion particles

Method used

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  • Light diffusion plate and preparation method thereof

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preparation example Construction

[0023] The present invention provides a method for preparing a light scattering plate, the method comprising:

[0024] Step 1: Prepare light scattering particles with surface connected molecular chains;

[0025] Step 2: Take the light scattering particles and the transparent substrate to mix according to the mass percentages of 0.1-25% and 75-99.9% respectively, and blend and extrude them under the conditions of 180°C to 300°C to obtain the light scattering plate.

[0026] Among them, the molecular chain connected to the light scattering particles is the same as the molecular chain of the transparent substrate.

[0027] Further, the method for preparing light scattering particles with surface connected molecular chains includes:

[0028] According to the mass ratio of 1:0.2~2:10~100, mix the microspheres carrying hydroxyl and double bonds on the surface, the monomer or oligomer for preparing transparent substrate, and the organic solvent, and then drop the initiator to react at 50~100℃....

Embodiment 1

[0035] According to the mass ratio of 1:0.2:50, organic silicon microspheres with a particle size of 1 μm and hydroxyl and double bonds on the surface, polycarbonate with a molecular weight of 100 to 500 and chloroform were mixed, and the total mass of the system was dropped at 60°C. 0.5% sodium alkoxide, reacted for 5 hours, filtered, washed, filtered and dried to obtain organosilicon microspheres with polycarbonate molecular chains connected on the surface.

[0036] The organic silicon microspheres with a mass fraction of 1% and polycarbonate with a mass fraction of 99% are blended, and a light diffusion plate with a thickness of 2000 μm is extruded.

Embodiment 2

[0038] According to the mass ratio of 1:1:20, the organosilicon microspheres with a particle size of 1μm and carrying hydroxyl and double bonds on the surface, methyl methacrylate and toluene were mixed, and at 70℃, 5% of the total mass of the system Nitrogen diisobutyronitrile reacted for 10 hours, filtered, washed, filtered and dried to obtain organosilicon microspheres with polymethyl methacrylate molecular chains connected on the surface.

[0039] The organic silicon microspheres with a mass fraction of 1% and polymethyl methacrylate with a mass fraction of 99% are blended, and a light diffusion plate with a thickness of 1000 μm is extruded.

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Abstract

The embodiment of the invention provides a light diffusion plate and a preparation method thereof, and relates to the field of illumination material technology. The light diffusion plate comprises transparent base materials and light scattering particles, the light scattering particles are dispersed in the transparent base materials, and surfaces of the light scattering particles are connected with molecular chains, wherein the molecular chains connected with the light scattering particles are the same as molecular chains of the transparent base materials. When the light scattering particles and the transparent base materials are blended, the molecular chains at the surfaces of the light scattering particles can be fully extended and blended into the transparent base materials to increasethe mutual effect of the interfaces. Because the ratio of the density and the length of the molecular chains at the surfaces of the light scattering particles is lower than the ratio of the density and the length of the molecular chains in the transparent base materials, the intensity of the mutual effect of the interfaces is lower than the intensity of the base materials. When an external force pressed on the materials reaches a certain value, the interface active force can be unsticked in advance, so that a lot of energy is absorbed, and the impact intensity of the light diffusion plate is improved.

Description

Technical field [0001] The invention belongs to the technical field of lighting material preparation, and in particular relates to a light diffusion plate and a preparation method. Background technique [0002] Light Emitting Diode (LED) lighting is the third leap in human lighting history after incandescent lamps and fluorescent lamps. LED is a solid semiconductor light source, which has long been used in the display field. At present, it is gradually entering the field of lighting as a new type of solid light source. Compared with traditional lighting, LED lighting is energy-saving, environmentally friendly and safe. Therefore, LED lighting will replace the current incandescent lamps and fluorescent lamps on a large scale. [0003] However, LED lighting is more dazzling than traditional lighting, and a light diffuser is needed to soften the light before it can be used for indoor lighting. The light diffuser can convert a point light source into a surface light source. The pr...

Claims

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Application Information

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IPC IPC(8): G02B5/02C08L69/00C08L25/06C08L33/12C08L87/00C08L51/08C08L51/00C08J5/18
CPCC08J5/18C08J2325/06C08J2333/12C08J2369/00C08J2451/00C08J2451/08C08J2487/00G02B5/0226
Inventor 欧阳星
Owner SHENZHEN UNIV
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