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Light diffusion plate and preparation method thereof

A technology of light diffusing plate and light diffusing agent, applied in the direction of diffusing element, etc., can solve the problems of low transmittance, high haze, low light transmittance, high brightness, etc., to increase light transmittance, reduce surface unevenness, The effect of improving the pass rate

Inactive Publication Date: 2018-11-20
赖慎鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a light diffusion plate and a preparation method thereof. By improving the mold, the raw materials in the diffusion plate do not need to undergo secondary granulation, and are directly mixed and extruded through the mold to reduce the traditional During the production process, the phenomenon of uneven surface and low light transmittance due to uneven mixing occurs, and the obtained product has optical properties of low transmittance, high haze and high brightness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A light diffusion plate, which consists of the following components in parts by mass: 100 parts of optical grade polypropylene, SiO 2 0.4 parts, 0.05 parts of titanium dioxide, 0.008 parts of white mineral oil, 3 parts of maleic anhydride POE, 0.1 parts of talcum powder, 0.00005 parts of OB-1, among them, the refractive index of optical grade polypropylene is 1.54; SiO 2 The refractive index is 1.42, and the particle size is 1.5um.

[0025] The invention also discloses a method for preparing a light diffusion plate, comprising the following steps:

[0026] A. Scaled optical grade optical grade polypropylene, SiO 2 , titanium dioxide, white mineral oil, maleic anhydride, POE, talcum powder and OB-1, stir at high speed for 15 minutes to make it evenly mixed;

[0027] B. Dry the uniformly mixed raw materials in step A at 70°C for 2 hours to evaporate the water;

[0028] C. Put the dried raw material in step B into the heating pipeline, carry out temperature rise tre...

Embodiment 2

[0031] A light diffusion plate, which consists of the following components in parts by mass: 100 parts of optical grade polypropylene, TiO 2 0.5 parts, 0.3 parts of titanium dioxide, 0.01 parts of white mineral oil, 6 parts of SBS, 0.2 parts of mica powder, 0.0001 parts of OB-1, among which, the refractive index of optical grade polypropylene is 1.54; TiO 2 The refractive index is 1.42, and the particle size is 2um.

[0032] The invention also discloses a method for preparing a light diffusion plate, comprising the following steps:

[0033] A. Scaled optical grade polypropylene, TiO 2 , titanium dioxide, white mineral oil, SBS, mica powder and OB-1, stir at high speed for 20 minutes to make it evenly mixed;

[0034] B. Statically dry the uniformly mixed raw materials in step A at 75°C for 2.5 hours to evaporate the water;

[0035] C. Put the dried raw material in step B into the heating pipeline, carry out temperature rise treatment, melt and mix evenly, wherein the tem...

Embodiment 3

[0038] A light diffusion plate, which is composed of the following components in parts by mass: 100 parts of optical grade polypropylene, 0.96 parts of polystyrene, 0.5 parts of titanium dioxide, 0.02 parts of white mineral oil, 9 parts of ABS, 0.4 parts of boron nitride, OB -1 0.001 parts; Among them, the refractive index of optical grade polypropylene is 1.54; the refractive index of polystyrene is 1.42, and the particle size is 3um.

[0039] The invention also discloses a method for preparing a light diffusion plate, comprising the following steps:

[0040] A. Weigh optical grade polypropylene, polystyrene, titanium dioxide, white mineral oil, ABS, boron nitride and OB-1 in proportion, and stir at high speed for 30 minutes to make it evenly mixed;

[0041] B. Dynamically dry the uniformly mixed raw materials in step A at 80°C for 3 hours to evaporate the water;

[0042] C. Put the dried raw material in step B into the heating pipeline, carry out temperature rise treatme...

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Abstract

The invention discloses a light diffusion plate. The light diffusion plate is prepared from the following components in parts by mass: 100 parts of optical grade polypropylene, 0.4 to 0.96 part of light diffusion agent, 0.05 to 0.5 part of titanium dioxide, 0.008 to 0.02 part of white mineral oil, 3 to 9 parts of flexibilizer, 0.1 to 0.4 part of nucleating agent, and 0.00005 to 0.001 part of fluorescent whitening agent. The light diffusion plate disclosed by the invention is improved by adopting a screw rotary feeding, sealing and stirring mode; a formula in the light diffusion plate is directly and uniformly mixed, and then is extruded and molded through a mold without secondary granulation, so that the phenomenon of unstable optical performance caused by uneven master batch mixing of secondary granulation in the traditional production technological process is reduced; and in addition, the prepared product has the optical properties of low permeation, high haze and high luminance.

Description

technical field [0001] The invention belongs to the production technical field of a light diffusion plate, and in particular relates to a light diffusion plate and a preparation method thereof. Background technique [0002] The light diffusion plate uses chemical or physical means to use the physical imagination of refraction, reflection and scattering when light encounters two media with different refractive indices on the way, and it is placed on PMMA, PC, PS, PP and other substrates. Inorganic or organic light diffusing agents are added; or the light is artificially adjusted through the array arrangement of the micro-feature structure on the surface of the substrate, so that the light can be refracted, reflected, and scattered in different directions, thereby changing the path of light and achieving sufficient dispersion of incident light. Color in order to produce the effect of optical diffusion. [0003] The traditional production process of light diffusion plate is to...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L91/06C08L51/06C08L53/02C08L55/02C08L25/06C08K13/02C08K3/36C08K3/22C08K3/34G02B5/02
CPCC08K2003/2241C08K2003/385C08K2201/003C08K2201/014C08L23/12C08L2205/03C08L2205/035C08L2205/24G02B5/02C08L91/06C08L51/06C08K13/02C08K3/36C08K3/22C08K3/34C08L53/02C08L55/02C08L25/06C08K3/38
Inventor 赖慎鹏
Owner 赖慎鹏
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