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Polycarbonate material with good transparent light diffusion function and preparation method thereof

A technology of polycarbonate and light diffusion, which is applied in the field of polycarbonate materials and its preparation, can solve problems such as glare and limited illuminated area, and achieve the effect of improving yellowing resistance

Active Publication Date: 2015-10-07
NANTONG DONGFANG PLASTIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When applied in the field of lighting, there will be problems such as glare and limited illuminated area

Method used

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  • Polycarbonate material with good transparent light diffusion function and preparation method thereof
  • Polycarbonate material with good transparent light diffusion function and preparation method thereof
  • Polycarbonate material with good transparent light diffusion function and preparation method thereof

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Embodiment Construction

[0034] A method for preparing a polycarbonate material with good transparent light diffusion function. The first step is to melt and blend sulfonate flame retardants and silicone flame retardants with PC resin, and extrude them through a twin-screw extruder Granulation molding, the temperature setting range is 220°C-250°C, and the flame retardant masterbatch is made; the second step is mainly PC, adding composite light diffusing agent, flame retardant masterbatch, antioxidant, and flame retardant synergist , lubricants and other additives are further melted and blended in a twin-screw extruder with a set temperature of 250°C-280°C, extruded and granulated.

[0035] For the twin-screw extruder, the aspect ratio of the screw is 25-50:1, the screw speed is set at 200-600 rpm in the first step, and the screw speed is set at 200-600 rpm in the second step.

[0036] The dosage ratio relationship of each embodiment component is shown in Table 1. Wherein the dosage units are parts by...

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Abstract

The invention discloses a PC (Polycarbonate) material with an excellent transparent light diffusion function and a preparation method thereof. The PC material is composed of polycarbonate, flame retardant masterbatch, an auxiliary flame retardant, a compound light diffuser, an antioxidant, a flame retardant synergist, a lubricant and other auxiliaries. The principle ingredient of the PC material is PC resin; the PC material is extruded by two steps, wherein the first step is to blend a sulfonate type major flame retardant and an organic silicon flame retardant with the PC resin by melting and granulate the mixture through extrusion by virtue of a twin-screw extruder so as to obtain the light diffusible flame retardant masterbatch, and the second step is to add the compound light diffuser, the flame retardant masterbatch, the antioxidant, the flame retardant synergist, the lubricant and other auxiliaries for further melting blending by taking PC as the major ingredient, and then extrude and granulate the mixture. The flame-retardant light diffusible PC material provided by the invention can be widely applied to an LED (Light-Emitting Diode) lamp, the backlight of a liquid crystal display, a transmission type screen, a decorative lighting billboard, an advertisement lamp box and the like in the lighting field.

Description

technical field [0001] The invention relates to a polycarbonate material and a preparation method thereof. Background technique [0002] As a new generation of energy-saving lighting materials, LED is expected to replace incandescent lamps and energy-saving lamps in the next ten years, and become the first choice for future lighting. It has the following advantages: high light efficiency, low power consumption, long life, easy control, maintenance-free, safety and environmental protection, etc. But the LED lamp itself is a point light source. When applied in the field of lighting, there will be problems such as glare and limited illuminated area. To make the light of LED light bright, the most effective way is to add light diffusing agent. The light diffusing agent is spherical. Because the refractive index of PC resin and light diffusing agent are different, the light is refracted and reflected many times on the surface to achieve the effect of light diffusion. Effect. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L83/04C08L33/12C08K5/42C08J3/22
Inventor 马宝海江刘陈林陈勇
Owner NANTONG DONGFANG PLASTIC CO LTD
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