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Light scattering polycarbonate composition for light emitting diode (LED) lighting and use thereof

A technology of LED lighting and polycarbonate, applied in lighting devices, lighting and heating equipment, components of lighting devices, etc., can solve the problems of low light transmittance and haze, and achieve good transparency, high transparency, The effect of excellent dodging effect

Inactive Publication Date: 2011-07-27
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a light-scattering polycarbonate composition for LED lighting with good transparency and uniformity for the defects of existing light-scattering materials such as low light transmittance and haze

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The light scattering agent (particle size: 10 μm, polyglycidyl methacrylate shell thickness 0.7 μm) with polysiloxane microspheres as the core and polyglycidyl methacrylate as the shell in 4 parts by mass , 95.99 parts by mass of polycarbonate with a melt index of 50 g / 10min and 0.01 part by mass of triethylphosphite antioxidant are mixed and dried at 120°C for 4 hours, and passed through a twin-screw extruder For extrusion granulation, the temperature of each zone of the twin-screw extruder should be kept at 200-300°C, then cooled, dried, pelletized and packaged to obtain the LED lamp housing material. After measurement, the light transmittance of the 2mm thick LED lamp shell material is 81.3%, and the haze is 90.5%.

Embodiment 2

[0026] The light scattering agent (particle diameter is 12 μ m, polymethyl methacrylate shell thickness 0.8 μ m) with silicon dioxide as the core and polymethyl methacrylate as the shell in parts by mass, the number of parts by mass is 96.95 parts of polycarbonate with a melt index of 55g / 10min and 0.05 parts by mass of triisopropyl phosphite antioxidant were mixed and dried at 120°C for 4 hours, extruded and granulated by a twin-screw extruder , The temperature of each zone of the twin-screw extruder should be kept at 200-300°C, then cooled, dried, pelletized and packaged to obtain the LED lamp housing material. After measurement, the light transmittance of the 2mm thick LED lamp shell material is 80.4%, and the haze is 91.2%.

Embodiment 3

[0028] 2 parts by mass of a light-scattering agent with glass microspheres as the core and polybutylacrylate as the shell (the particle diameter is 12 μm, the thickness of the polybutylacrylate shell layer is 0.9 μm), and 97.90 parts by mass of the molten Polycarbonate with an index of 60g / 10min and a triisodecyl phosphite antioxidant with a mass fraction of 0.1 part were mixed and dried at 120°C for 4 hours, extruded and granulated by a twin-screw extruder, and twin-screw extruded The temperature of each area of ​​the extruder screw should be kept at 200-300°C, then cooled, dried, pelletized and packaged to obtain the LED lamp housing material. After measurement, the light transmittance of the 2mm thick LED lamp shell material is 80.1%, and the haze is 93.4%.

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Abstract

The invention discloses a light scattering polycarbonate composition for LED lighting and use thereof. The composition comprises polycarbonate and a light scattering agent, wherein the light scattering agent is core-shell light scattering powder which takes a glass microsphere, silicon dioxide, a polysiloxane microsphere or polystyrene as a core and acrylate polymer or methacrylate polymer as a shell. The light scattering polycarbonate composition for LED lighting, which is disclosed by the invention, has higher transparency and better light homogenizing effect than other light scattering compositions. The composition disclosed by the invention can be used as a shell material in the field of lighting or display such as LED lamps, fluorescent lamps and incandescent lamps.

Description

technical field [0001] The invention relates to an LED lamp housing material, in particular to a light-scattering polycarbonate composition for LED lighting and an application thereof. Background technique [0002] With the rapid development of my country's social economy and the increasing depletion of non-renewable energy resources, people's requirements for environmental protection and energy conservation are getting higher and higher, which will inevitably lead people to pay more attention to the popularization and use of light-emitting diode (LED) lighting. Due to the advantages of energy saving, environmental protection, and long life, LED lighting has a very broad application prospect, such as permanent lights in tunnels, decoration and lighting facilities used by enterprises, lighting devices in municipal facilities, high-end auto parts, high-end home lighting, etc. In 2009, China launched the "Ten Cities, Ten Thousand Lamps" semiconductor lighting application projec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/08C08L51/10C08K5/524C08K5/13C08K5/134F21V5/08F21Y101/02F21Y115/10
Inventor 张秀菊林志丹沈俊才杨华军
Owner JINAN UNIVERSITY
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