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Optical diffusant, optical diffusion material and preparation method of optical diffusion material

A technology of light diffusing agent and light dispersing agent, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., can solve the problems of light transmittance and haze not reaching, and achieve simple operation and affordable raw materials. Effect

Inactive Publication Date: 2012-08-15
SHANGHAI UNIV
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Problems solved by technology

As far as the light diffusing materials currently produced on the market are concerned, their light transmittance and haze have not reached a good balance.

Method used

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  • Optical diffusant, optical diffusion material and preparation method of optical diffusion material

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Embodiment Construction

[0026] In the materials of the following examples, the silicon microsphere powder in the light diffusing agent is selected from Japan's Shin-Etsu, the trade name is KMP-590, tetra-n-butyl titanate and ethanol are analytically pure, and the water is deionized water .

[0027] The light diffusing agent provided by the invention comprises (%) by weight: 97-99% of polycarbonate; 0.5-1.5% of light scattering agent; 0.3-1.5% of flame retardant. 0.2-1.0% of other additives can also be added to it for experimentation. Wherein, the polycarbonate is medium-high viscosity, and its melt index MFI is 8-11 g / 10 min; other additives include antioxidant and anti-ultraviolet agent.

[0028] First prepare the light diffusing agent, measure 2ml of tetra-n-butyl titanate, add it to the mixture of 40ml of ethanol and 2ml of water, stir for half an hour, add silicone resin, continue stirring for half an hour, then transfer the mixture to a hydrothermal kettle , then add 20ml of ethanol, react at ...

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Abstract

The invention relates to an optical diffusant, an optical diffusion material and the preparation method of the optical diffusion material. The optical diffusant takes silica microsphere as a core, hollow porous nano titania microspheres with the diameter being 30-70nm coat the surface of the silica microsphere, wherein the mass ratio of the hollow porous nano titania microspheres to the silica microsphere is (4:1)-(1:1). The optical diffusion material comprises the following compositions in percentage by weight: 97-99% of polycarbonate, 0.5-1.5% of optical diffusant and 0.3-1.5% flame retardant. The optical diffusion material disclosed by the invention is suitable for being used as an additive in optical diffusion members, such as a transmission type screen, a luminaire and a decorative lighting board, of backlight and protection television and the like which are displayed by liquid crystal. In addition, the preparation method is simple to operate, and the raw materials are cheap in price and can be widely applied to various optical diffusion base materials.

Description

technical field [0001] The invention relates to a light diffusing agent with excellent light permeability and diffusivity, a light dispersing material and a preparation method thereof. Background technique [0002] Lighting is indispensable in human life. For lighting in most situations, it is required that the lighting light has a uniform spatial light intensity (or luminance) distribution. In the "National Medium and Long-Term Science and Technology Development Program (2006-2020)", the priority theme of research and development of high-efficiency, energy-saving and long-life semiconductor lighting products was proposed. At the same time, in 2010, the state clearly defined energy conservation and environmental protection, new energy, and new materials as strategic emerging industries for key development, and promulgated the "Opinions on the Development of Semiconductor Lighting Energy Conservation Industry", requiring that by gathering innovative resources, highlighting t...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08L69/00C09C1/28C09C3/06
Inventor 丁鹏施利毅赵昱徐晓磊唐圣福
Owner SHANGHAI UNIV
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