Porous cross-linked polystyrene light diffusing agent, PC light diffusing plate, and preparation methods of porous cross-linked polystyrene light diffusing agent and PC light diffusing plate

A technology of cross-linked polystyrene and light diffusing agent, applied in lighting and heating equipment, light sources, semiconductor devices of light-emitting elements, etc., can solve the problems of high luminous directivity and high color temperature of LEDs, achieve soft light and increase haze Effect

Active Publication Date: 2019-01-25
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a porous cross-linked polystyrene light diffusing agent and PC light diffusing plate and its preparation method, to solve the problem of glare caused by the characteristics of high directivity and high color temperature of LED light emitting in the prior art, Under the premise of minimizing the loss of light transmittance, improve the light uniformity of LED lighting fixtures and make the light softer, thereby eliminating glare and improving the comfort of indoor LED lighting

Method used

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  • Porous cross-linked polystyrene light diffusing agent, PC light diffusing plate, and preparation methods of porous cross-linked polystyrene light diffusing agent and PC light diffusing plate
  • Porous cross-linked polystyrene light diffusing agent, PC light diffusing plate, and preparation methods of porous cross-linked polystyrene light diffusing agent and PC light diffusing plate
  • Porous cross-linked polystyrene light diffusing agent, PC light diffusing plate, and preparation methods of porous cross-linked polystyrene light diffusing agent and PC light diffusing plate

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Co-porogen: a mixed solvent of toluene and low-density liquid paraffin, low-density liquid paraffin accounts for 0% of the total volume of the co-porogen, and the co-porogen accounts for 50% of the total volume of the mixed oil phase.

[0036] Emulsifier, co-emulsifier and deionized water (the mass fraction of emulsifier accounting for deionized water is 8%, and co-emulsifying agent accounts for 30% of the mass fraction of emulsifier) ​​is added in the reactor, under ice-bath condition, mechanical Stir for 20 minutes, add styrene, divinylbenzene, and initiator (wherein the volume fraction of styrene and divinylbenzene is 3:2, and the mass fraction of the initiator in the mixed oil phase is 4%) into the beaker and sonicate for 10 minutes, Until it dissolves, add the co-porogen into the monomer mixture and disperse ultrasonically for 10 minutes until it is uniform to obtain a mixed oil phase. Put the mixed oil phase in a constant pressure funnel, drop it into the reactor,...

Embodiment 2

[0038] Co-porogen: a mixed solvent of toluene and low-density liquid paraffin. The low-density liquid paraffin accounts for 50% of the total volume of the co-porogen, and the co-porogen accounts for 50% of the total volume of the mixed oil phase.

[0039] Emulsifier, co-emulsifier and deionized water (the mass fraction of emulsifier accounting for deionized water is 8%, and co-emulsifying agent accounts for 30% of the mass fraction of emulsifier) ​​is added in the reactor, under ice-bath condition, mechanical Stir for 20 minutes, add styrene, divinylbenzene, and initiator (wherein the volume fraction of styrene and divinylbenzene is 3:2, and the mass fraction of the initiator in the mixed oil phase is 4%) into the beaker and sonicate for 10 minutes, Until it dissolves, add the co-porogen into the monomer mixture and disperse ultrasonically for 10 minutes until it is uniform to obtain a mixed oil phase. Put the mixed oil phase in a constant pressure funnel, drop it into the rea...

Embodiment 3

[0041] Co-porogen: a mixed solvent of toluene and low-density liquid paraffin. The low-density liquid paraffin accounts for 70% of the total volume of the co-porogen, and the co-porogen accounts for 50% of the total volume of the mixed oil phase.

[0042]Emulsifier, co-emulsifier and deionized water (the mass fraction of emulsifier accounting for deionized water is 8%, and co-emulsifying agent accounts for 30% of the mass fraction of emulsifier) ​​is added in the reactor, under ice-bath condition, mechanical Stir for 20 minutes, add styrene, divinylbenzene, and initiator (wherein the volume fraction of styrene and divinylbenzene is 3:2, and the mass fraction of the initiator in the mixed oil phase is 4%) into the beaker and sonicate for 10 minutes, Until it dissolves, add the co-porogen into the monomer mixture and disperse ultrasonically for 10 minutes until it is uniform to obtain a mixed oil phase. Put the mixed oil phase in a constant pressure funnel, drop it into the reac...

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Abstract

The invention relates to a porous cross-linked polystyrene light diffusing agent, a PC light diffusing plate, and preparation methods of the porous cross-linked polystyrene light diffusing agent and the PC light diffusing plate, and belong to the technical field of polymer materials, wherein the light diffusing agent is a random copolymer of styrene with micropores on the surface and divinylbenzene, and the PC light diffusing plate comprises: 95-99% of polycarbonate, and 1-5% of the light diffusing agent. According to the present invention, the refractive index of the porous cross-linked polystyrene microspheres is different from the refractive index of the PC material, the micropores exist on the surface of the microspheres, the light can be reflected and refracted multiple times when thelight passes through the material, and finally the light passing through the light diffusing plate is changed into the surface light source from the point light source, such that the light is brightand soft; and the prepared PC light diffusing plate has excellent light transmittance and excellent light diffusing property, can be used for LED lighting lamps, liquid crystal display, advertising light boxes and the like, and can achieve soft and uniform illumination effect.

Description

technical field [0001] The invention relates to a porous cross-linked polystyrene light diffusion agent, a PC light diffusion plate and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] As a new type of solid-state light source, LED has been widely used in various fields, realizing another technological revolution in the history of human lighting. However, in practical applications, there are still many imperfections in LEDs, for example, the characteristics of its point light source are easy to cause light pollution and low luminous efficiency. Light diffusing agent is a kind of material with special optical characteristics, which has excellent light diffusing effect and light transmission. It effectively solves the problems of glare and low light extraction efficiency of LED light sources. [0003] At present, the light scattering particles used in LED lighting mainly include CaCO 3 , SiO 2 Such as inorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/36C08J9/28C08L25/06F21V5/08F21Y115/10
CPCC08F212/08C08J9/28C08J2201/0502C08J2325/06F21V5/08F21Y2115/10C08F212/36
Inventor 王洪任飞飞密建国杜中杰张晨邹威
Owner BEIJING UNIV OF CHEM TECH
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