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Porous core-shell SiO2/PS microsphere light diffusion agent, preparation and application

A technology of light diffusing agent and porous core, which is applied in the research field of porous core-shell SiO2/PS microsphere light diffusing agent and its optical properties, which can solve the problems of glare and uneven brightness, improve haze, and solve the problem of poor light transmittance. , the effect of good light diffusion performance

Active Publication Date: 2019-08-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the invention is to provide a porous core-shell SiO 2 / PS microsphere light diffusing agent and its application in optical devices to solve the problem of inorganic light diffusing agent SiO 2 The reunion of particles in the organic resin matrix solves the problem that the light emitted by the LED lamp is relatively concentrated and strong, which will form a strong contrast with the surrounding environment, resulting in uneven brightness and glare, so that the LED lamp is converted from a point light source to a surface Light source, reduce the glare problem of LED lamps to the eyes, improve the applicability of LED lamps

Method used

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  • Porous core-shell SiO2/PS microsphere light diffusion agent, preparation and application
  • Porous core-shell SiO2/PS microsphere light diffusion agent, preparation and application
  • Porous core-shell SiO2/PS microsphere light diffusion agent, preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Weigh the modified nano-SiO 2 The quality of the seeds is 0.2g, and they are dried in a vacuum oven.

[0043] Modified nano-SiO 2 Preparation of seeds: a certain amount of nano-SiO 2 Add it into toluene, ultrasonically disperse at room temperature for half an hour, gradually add the silane coupling agent MPS into the mixture, and continue ultrasonically mixing. Finally, transfer the mixed solution to a three-necked flask with a condensing device to react at a certain temperature, centrifuge the resulting slurry, wash the precipitate with ethanol for 3-5 times, dry it, and grind it into powder with agate to obtain modified nano-SiO 2 .

[0044] porous core-shell SiO 2 Preparation of / PS microspheres: 0.2 g of seed modified nano-SiO 2 , emulsifier (0.4g) and deionized water (10ml) join in the there-necked flask, mechanically stir under ice-bath condition, styrene (5.454g), divinylbenzene (3.676g), initiator (0.356 g) Put it into a beaker and ultrasonically mix it ev...

Embodiment 2

[0045] Embodiment 2 (reform method is the same as embodiment 1)

[0046] Weigh the modified nano-SiO 2 The quality of the seed microspheres is 0.4 g, and they are dried in a vacuum oven.

[0047] Modified nano-SiO 2 Preparation of seed microspheres: a certain amount of nano-SiO 2 Add the microspheres into toluene, ultrasonically disperse at room temperature for half an hour, gradually add the silane coupling agent MPS into the mixed liquid, and continue to ultrasonically mix evenly. Finally, transfer the mixed solution to a three-necked flask with a condensing device to react at a certain temperature, centrifuge the resulting slurry, wash the precipitate with ethanol for 3-5 times, dry it, and grind it into powder with agate to obtain modified nano-SiO 2 Microspheres.

[0048] porous core-shell SiO 2 Preparation of / PS microspheres: 0.4 g of seed-modified nano-SiO 2 , emulsifier (0.6g) and deionized water (10ml) join in the there-necked flask, mechanically stir under ice...

Embodiment 3

[0049] Embodiment 3 (reform method is the same as embodiment 1)

[0050] Weigh the modified nano-SiO 2 The quality of the seed microspheres is 0.6 g, and they are dried in a vacuum oven.

[0051] Modified nano-SiO 2 Preparation of seed microspheres: a certain amount of nano-SiO 2 Add the microspheres into toluene, ultrasonically disperse at room temperature for half an hour, gradually add the silane coupling agent MPS into the mixed liquid, and continue to ultrasonically mix evenly. Finally, transfer the mixed solution to a three-necked flask with a condensing device to react at a certain temperature, centrifuge the resulting slurry, wash the precipitate with ethanol for 3-5 times, dry it, and grind it into powder with agate to obtain modified nano-SiO 2 Microspheres.

[0052] porous core-shell SiO 2 Preparation of / PS microspheres: 0.6 g of seed modified nano-SiO 2 , emulsifier (0.8g) and deionized water (10ml) join in the there-necked flask, mechanically stir under ice...

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Abstract

Belonging to the technical field of composite high polymer materials, the invention relates to a porous core-shell SiO2 / PS microsphere light diffusion agent, preparation and application. A compoundingmethod of coating an inorganic light diffusion agent with an organic light diffusion agent is employed for preparation, and the light diffusion agent solves the problem that the defects formed at theinterface between organic and inorganic materials lower the light transmittance of a light diffusion plate. The porous core-shell SiO2 / PS microsphere light diffusion agent has the properties of organic-inorganic materials, when light passes through the light diffusion agent, refraction and reflection not only occur on the pores of the microspheres, but also occur on the SiO2 microspheres, thus improving the light diffusion performance of the PC light diffusion plate, so that the PC light diffusion plate can have excellent optical properties, and can meet the practical application of the PC light diffusion plate.

Description

technical field [0001] The invention relates to a porous core-shell SiO 2 The research on / PS microsphere light diffusing agent and its optical properties belongs to the technical field of composite polymer materials. Background technique [0002] LED lamps are point light source lamps. Compared with traditional incandescent lamps and energy-saving lamps, the light emitted by LED lamps is more concentrated and intense, which will form a strong contrast with the surrounding environment, resulting in uneven brightness and glare. , Glare is caused by the uniform distribution of light brightness in the field of view of the eye or the strong contrast of light intensity with the surrounding environment, which causes discomfort in the eyes, and in severe cases, it will cause vision loss. Glare is very harmful to the human body. It can cause headaches, tears, eye fatigue and burning sensation. In severe cases, it can cause vision loss and even cause a series of eye diseases such as...

Claims

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Application Information

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IPC IPC(8): C08F292/00C08F212/08C08F212/36C08J9/26
CPCC08F292/00C08J9/26C08J2201/042C08J2201/0422C08F212/08C08F212/36
Inventor 王洪任飞飞王晓彤张晨密建国杜中杰邹威
Owner BEIJING UNIV OF CHEM TECH
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