A light-diffusing polycarbonate composite material resistant to light aging and its preparation method

A technology of polycarbonate and composite materials, applied in the field of light-diffusing polycarbonate composite materials and its preparation, can solve the problems of poor light aging resistance, achieve good light aging resistance, low production cost, and avoid sags

Active Publication Date: 2018-04-10
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the light aging resistance of ordinary PC materials is poor. Therefore, the development of light-diffusing polycarbonate composite materials with light aging resistance can not only enrich the selection of materials for lighting engineering, but also improve the efficiency of lighting appliances; it is also conducive to expanding the use of PC composite materials. Application fields, with very important economic value and practical value

Method used

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  • A light-diffusing polycarbonate composite material resistant to light aging and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) 700 parts of polycarbonate pellets, 300 parts of polycarbonate powder, 0.5 parts of light diffusing agent Momentive TSR9002, 2 parts of light stabilizer 5411, 1 part of antioxidant, 0.5 parts of processing aid; The raw materials were mixed in a high-speed mixer, the mixing speed was 300 rpm, and the mixing time was 15 minutes to obtain a mixture;

[0049](2) Add the mixture obtained in step (1) into a twin-screw extruder, extrude and granulate, and obtain light-diffusing polycarbonate composite material pellets resistant to light aging. The temperature and screw speed of each zone of the twin-screw extruder are as follows: the temperature of the first zone is 210°C, the temperature of the second zone is 220°C, the temperature of the third zone is 230°C, the temperature of the fourth zone is 240°C, the temperature of the fifth zone is 250°C, and the temperature of the sixth zone is 260°C. Head temperature 250°C; screw speed 200r / min. The performance test results of ...

Embodiment 2

[0051] (1) Mix 800 parts of polycarbonate pellets, 200 parts of polycarbonate powder, 0.5 parts of light diffusing agent Shin-Etsu X-52-7056A, 2 parts of light stabilizer 5411, 1 part of light stabilizer 944, and 1 part of antioxidant agent, 1 part of processing aid; these raw materials are mixed in a high-speed mixer, the mixing speed is 600rpm, and the mixing time is 12min to obtain a mixture;

[0052] (2) Add the mixture obtained in step (1) into a twin-screw extruder, extrude and granulate, and obtain light-diffusing polycarbonate composite material pellets resistant to light aging. The twin-screw extruder consists of six zones, in which the temperature and screw speed of each zone are respectively: the temperature of the first zone is 220°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 250°C, the temperature of the fifth zone is 260°C, and the temperature of the sixth zone is 260°C. Zone tem...

Embodiment 3

[0054] (1) 900 parts of polycarbonate pellets, 100 parts of polycarbonate powder, 0.5 parts of light diffusing agent Shin-Etsu X-52-7056A, 0.5 parts of light diffusing agent Momentive TSR9002, 2 parts of light stabilizer 944, 3 parts Light stabilizer UV-P, 3 parts of antioxidant, 2 parts of processing aid; these raw materials are mixed in a high-speed mixer, the mixing speed is 900rpm, and the mixing time is 9min to obtain a mixture;

[0055] (2) Add the mixture obtained in step (1) into a twin-screw extruder, extrude and granulate, and obtain light-diffusing polycarbonate composite material pellets resistant to light aging. The twin-screw extruder consists of six zones, in which the temperature and screw speed of each zone are respectively: the temperature of the first zone is 230°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 260°C, the temperature of the fifth zone is 250°C, and the temperatur...

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Abstract

The invention relates to a light-diffusing polycarbonate composite material resistant to light aging and a preparation method thereof. The composite material consists of 700-900 parts of polycarbonate pellets, 100-300 parts of polycarbonate powder, and 0.5-5 parts of a light-diffusing agent , 2-8 parts of light stabilizer, 1-5 parts of antioxidant and 0.5-2 parts of processing aid are made by weight. It is a light-diffusing polycarbonate composite material with light aging resistance and high-speed mixing and extrusion granulation of raw materials. The light-aging resistant light-diffusing polycarbonate composite material of the invention has the advantages of good processability, good light-aging resistance, good light transmittance, haze and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer processing, and relates to a polycarbonate composite material and a preparation method thereof, in particular to a light-diffusion polycarbonate composite material resistant to light aging and a preparation method thereof. Background technique [0002] Polycarbonate resin, referred to as PC, is a widely used engineering plastic. PC resin has excellent mechanical properties, impact resistance and electrical insulation properties, making it one of the ideal materials for plastic parts such as automobiles and home appliances; in addition, PC is a resin with high light transmittance. Widely used in lighting lampshades, automotive tachometers, lamps, billboards, advertising boxes, resin glass, liquid crystal displays and other fields. [0003] Along with social development needs such as environmental protection and energy saving, future lighting appliances need to have the characteristics of high ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K13/04C08K7/16B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 杨桂生田恐虎
Owner HEFEI GENIUS NEW MATERIALS
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