Light diffusion materials and preparation method thereof

A light-diffusing, light-transmitting material technology, applied in the field of materials and chemistry, can solve problems such as light transmittance decline, and achieve high light transmittance effects

Inactive Publication Date: 2013-04-24
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, high light transmittance and high haze are often a pair of contradictions
Although there are commercial products of light diffusing materials, the contradiction between high light transmittance and high haze has not been well resolved. When maintaining high haze, the light transmittance drops by nearly 20%, and the performance of light diffusing materials is still low. a lot of room for improvement

Method used

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  • Light diffusion materials and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0019] The present invention also provides a method for preparing the light-diffusing material, comprising the steps of:

[0020] Step 1: Provide light-diffusing particles and light-transmitting materials. The light-diffusing particles are porous light-diffusing particles or hollow light-diffusing particles or a mixture of the aforementioned two kinds of hollow light-diffusing particles and solid light-diffusing particles.

[0021] Step 2: uniformly mix the light-diffusing material and the light-transmitting material to form a mixed material, and the weight percentage of the light-diffusing material in the mixed material is 0.1%-25%.

[0022] The third step: extruding the mixed material into granules.

[0023] The preparation method of the light-diffusing material also includes uniformly mixing the light-diffusing material with auxiliary agents before performing the second step, and the auxiliary agents include fluorescent whitening agents, anti-ultraviolet auxiliary agents, ...

Embodiment 1

[0030] 0.5 parts by mass of the porous light-diffusing particles are weighed, and the porous light-diffusing particles are porous organic silicon microspheres. And weigh 99.5 parts by mass of the light-transmitting material, which is polycarbonate. Stir the above two materials evenly, and put them into a melt extruder for blending and granulation. The temperature range of extrusion granulation is 180℃~300℃. The porous light-diffusing particles are uniformly dispersed in the polycarbonate substrate, and the particle diameter ranges from 0.3 to 5 μm.

[0031] When the light-diffusing polycarbonate material has a haze of 97%, the light transmittance reaches 86%.

Embodiment 2

[0033] 20 parts by mass of the porous light-diffusing particles are weighed, and the porous light-diffusing particles are porous organic silicon microspheres. And weigh 80 parts by mass of the light-transmitting material, the said light-transmitting material is polycarbonate, stir the above two materials evenly, and put them into the melt extruder for blending and granulation. The temperature range of extrusion granulation is 180℃~300℃. The porous light-diffusing particles are evenly dispersed in the polycarbonate substrate, and the particle diameter ranges from 0.3 to 5 μm.

[0034] When the light-diffusing polycarbonate material has a haze of 99%, the light transmittance reaches 70%.

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Abstract

The invention belongs to the technical field of materials and chemistry and provides light diffusion materials. The light diffusion materials comprise light diffusion particles and light-passing materials. The light diffusion particles are multihole light diffusion particles or hollow light diffusion particles or a mixture of the hollow light diffusion particles and the substance light diffusion particles. The light diffusion particles account for 0.1%-25% by weight of the light diffusion materials. The light diffusion materials have high light transmittance and high harizonae. The invention also provides a preparation method of the light diffusion materials.

Description

technical field [0001] The invention belongs to the technical field of materials and chemistry, and relates to a light-diffusing material with high light transmittance and high haze and a preparation method thereof. Background technique [0002] Light-emitting diode (Light Emitting Diode, LED) lighting is the third leap in the history of human lighting after incandescent and fluorescent lamps. LED is a solid semiconductor light source that has long been used in the display field. At present, it is gradually entering the field of lighting with the role of 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 existing incandescent and fluorescent lamps on a large scale. [0003] However, LED lighting is more dazzling than traditional lighting, and it needs to be used for indoor lighting by using a uniform lampshade made of light-diffusing materials to softe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02F21V5/08F21Y101/02F21Y115/10
Inventor 欧阳星
Owner SHENZHEN UNIV
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