High-haze high-light transmittance light diffuser plate and preparation method thereof

A technology of light diffusion plate and high light transmittance, applied in optics, optical components, instruments, etc., can solve problems such as ineffective export, high haze and high light transmittance without clear data display, etc., to reduce production costs, The effect of simple materials and low cost of raw materials

Inactive Publication Date: 2018-05-18
SUZHOU SANXIN TIMES NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the greater the difference in refractive index, the stronger the scattering effect, and if the difference in refractive index between PS and light scattering agent particles is too large, it will cause total emission, and the light will be reflected back to the inside and cannot be effectively exported.
[0008] Patent application number 201410432692.7 discloses a PS diffuse reflection type light diffusion plate, the refractive index of PS is 1.51, and the refractive index of modified silicone is 1.45, which is much higher than that of unmodified silicone. Ratio of 1.41 to 1.42, and the total content of the light diffusing agent used in this patent is 5%, the final technical effect of high haze and high light transmission is not clearly shown by the data

Method used

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  • High-haze high-light transmittance light diffuser plate and preparation method thereof
  • High-haze high-light transmittance light diffuser plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment example 1

[0037] A light diffusion plate with high haze and high light transmittance is characterized in that it comprises the following components by mass fraction: 96.7% of optical grade polystyrene, and 3.3% of organic silicon. The diffuser had a haze of 99.8% and a light transmittance of 80%.

[0038] The preparation method of the light diffusion plate with high haze and high light transmittance as described above comprises the following steps:

[0039] (1) Take the material in proportion and put it into the container;

[0040] (2) Stir the materials in the container evenly to form a mixture;

[0041] (3) The mixture obtained in step (2) is pumped into a drier, and the drying temperature is adjusted to be 71° C., and the drying time is 4 hours;

[0042] (4) Input the drying material obtained in step (3) into the heating pipeline, the temperature of the heating pipeline is 170-250° C., and the method of heating in stages is adopted to melt it into a slurry;

[0043] (5) The slurry...

specific Embodiment example 2

[0046]A light diffusion plate with high haze and high light transmittance is characterized in that it comprises the following composition in mass fraction: 99.2% of optical grade polystyrene and 0.8% of organic silicon. The diffuser had a haze of 99.5% and a light transmittance of 85%.

[0047] The preparation method of the light diffusion plate with high haze and high light transmittance as described above comprises the following steps:

[0048] (2) Take the material in proportion and put it into the container;

[0049] (2) Stir the materials in the container evenly to form a mixture;

[0050] (3) The mixture obtained in step (2) is pumped into a drier, and the drying temperature is adjusted to be 89° C., and the drying time is 2.1 hours;

[0051] (4) Input the drying material obtained in step (3) into the heating pipeline, the temperature of the heating pipeline is 170-250° C., and it is melted into a slurry by adopting a staged heating method;

[0052] (5) The slurry mix...

specific Embodiment example 3

[0055] A light diffusion plate with high haze and high light transmittance is characterized in that it comprises the following components in mass fraction: 97.7% of optical grade polystyrene and 2.3% of organic silicon. The diffuser had a haze of 99.6% and a light transmittance of 82%.

[0056] The preparation method of the light diffusion plate with high haze and high light transmittance as described above comprises the following steps:

[0057] (3) Take the material in proportion and put it into the container;

[0058] (2) Stir the materials in the container evenly to form a mixture;

[0059] (3) The mixture obtained in step (2) is pumped into a drier, and the drying temperature is adjusted to be 80°C, and the drying time is 3 hours;

[0060] (4) Input the drying material obtained in step (3) into the heating pipeline, the temperature of the heating pipeline is 170-250° C., and it is melted into a slurry by adopting a staged heating method;

[0061] (5) The slurry mixture...

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Abstract

The invention provides a high-haze high-light transmittance light diffuser plate mainly using an optical level polystyrene as the main material, and an unmodified organosilicon serves as the light scattering agent; the optical level polystyrene takes 96-99.5% of the total mass, the organosilicon particles takes 0.5-4% of the total mass; the method comprises the following steps: 1, weighing the material according to the proportions, and placing same into a container; 2, evenly mixing the materials in the container so as to form a mixture; 2, pumping the obtained mixture into a dryer, and dryingfor preparation; 3, inputting the obtained dried material into a heating pipe, and fusing same into a slurry state; 4, conveying the obtained slurry mixture to an adjustable die head, and forming thefinished product through three-roller expansion pressure cooling moulding, wherein the haze of the obtained finished product could be >=99.5%, and the light transmittance can be >=80%.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to a light diffusion plate with high haze and high light transmittance and a preparation method thereof. Background technique [0002] Light diffusion plates have been widely used in liquid crystal display, LED lighting, and imaging systems to fully diffuse incident light and achieve softer and more uniform illumination effects. The light diffusion plate is formed by adding a light diffusing agent to the raw material when producing a solid plate. The diffusing agent is evenly distributed in the plate, so that when the light passes through the plate, it will reflect, refract and scatter when it encounters the particles of the diffusing agent, so that the light can pass through the plate evenly without exposing the light source, reaching from point light source to The change of the surface light source. It is suitable for direct-lit LED TV backlight modules and LED lighting. I...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02B1/04
CPCG02B1/04G02B5/0278
Inventor 张建林张黎明
Owner SUZHOU SANXIN TIMES NEW MATERIAL CO LTD
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