Semitransparent light diffusion modified PC (Polycarbonate) and preparation method thereof

A light diffusing and translucent technology, applied in the field of polymer materials, can solve problems such as stimulation, and achieve the effect of convenient operation, broad application prospects and soft light.

Inactive Publication Date: 2012-01-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when PC is applied to products such as LED lampshades and lamp tubes, due to the excellent light transmission of PC, the transmitted light is too strong, and the dazzling light will strongly stimulate the naked eye.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weighing by weight percentage: PC resin 96.4%, light diffusing agent ESC-M05-1 micropowder 3%, antioxidant 10760.2%, antioxidant 1680.2%, lubricant EBS 0.2%.

[0029] Preparation process: Put PC resin in a blast dryer at 110°C-130°C and dry for 3-5 hours, then mix with light diffusing agent, antioxidant, and processing aid for 5-8 minutes until the material uniform. Then it is extruded and granulated by a twin-screw extruder, cooled and granulated. The process parameters of the twin-screw extruder are: the temperature of the first zone is 210-230°C, the temperature of the second zone is 250-270°C, the temperature of the third zone is 260-280°C, the temperature of the fourth zone is 260-280°C, the temperature of the fifth zone is 250-270°C, The temperature of the sixth zone is 240-260°C, the temperature of the seventh zone is 240-260°C, the temperature of the eighth zone is 230-250°C, the temperature of the die head is 260-280°C, the material residence time is 2-3min, t...

Embodiment 2

[0031] Weighing by weight percentage: PC resin 97.1%, light diffusing agent ESC-M05-1 micropowder 2%, antioxidant 1076 0.2%, antioxidant 1680.3%, lubricant EBS 0.4%.

[0032] The preparation process is the same as in Example 1.

Embodiment 3

[0034] Weighing by weight percentage: PC resin 98.2%, light diffusing agent ESC-M05-1 micropowder 1%, antioxidant 1076 0.1%, antioxidant 1680.2%, lubricant EBS 0.5%.

[0035] The preparation process is the same as in Example 1.

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PUM

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Abstract

The invention discloses semitransparent light diffusion modified PC (Polycarbonate) and a preparation method thereof. The semitransparent light diffusion modified PC consists of the following components in percentage by weight: 96.4-98.2 percent of PC resin, 1-3 percent of light diffusing agent, 0.2-0.5 percent of antioxidant and 0.2-0.5 percent of processing aid. The semitransparent light diffusion PC prepared with the method is in the form of semitransparent particles, is applied to an LED (Light-Emitting Diode) lamp shield and a lighting tube, can be used for effectively reducing the light ray intensity, is vaporous integrally without exposing a light source and has soft light rays, and has the advantages of simple process, convenience for operating, low cost and wide application prospect.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a translucent light-diffusion modified PC and a preparation method thereof. [Background technique] [0002] Bisphenol A aromatic polycarbonate (PC) is a kind of thermoplastic resin with wide application. It has excellent light transmission, high glass transition temperature, good impact toughness, creep resistance, electrical insulation, weather resistance, physiological inertness, ideal chemical modification and easy physical modification, etc. The advantages. PC is mainly used in electronic and electrical industries (such as mobile phone cases, electric meter casings, etc.), construction fields (such as transparent skylights and roofs, etc.), automotive industries (such as automotive lighting systems, dashboards, heating plates, defrosters and bumpers) etc.), medical equipment, food packaging, optical materials (discs, LED lights), etc. [0003] The light transmittance of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/04C08K5/54B29B9/06B29C47/92B29C48/92
Inventor 徐东徐永付天英
Owner SHENZHEN KEJU NEW MATERIAL
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