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Polycarbonate composition having high light reflectivity and uses thereof

A technology of polycarbonate and high light reflection, applied in the field of polymer alloys, can solve problems such as poor wear resistance, stress cracking, and poor processing fluidity, and achieve the effects of good light resistance, easy molding, and excellent performance

Active Publication Date: 2008-06-25
广东瑞能新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polycarbonate has good overall performance, some of its defects such as easy stress cracking, sensitivity to notch, poor wear resistance and poor processing fluidity need to be improved.
[0003] Although there are many different reinforced and flame-retardant polycarbonate materials, they still cannot meet the special needs in the field of optoelectronics. For example, some parts of LED displays and LCE displays require materials with flame High temperature, high ink adhesion, good dimensional stability, and easy processing and molding, etc., but the existing materials are not suitable, and the performance of the material needs to be further improved to meet the requirements of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The composition component of the present embodiment is: polycarbonate (PC) 63 kilograms, containing brominated polycarbonate 5 kilograms, acrylic acid core-shell copolymer (IM) 5 kilograms, TiO 2 15 kilograms, 0.2 kilogram of antioxidant 1010, 0.2 kilogram of lubricant pentaerythritol stearate, 0.3 kilogram of PTFE micropowder.

[0023] Wherein the polycarbonate melt index is 12g / 10min, produced by BAYER company, the melt index of containing brominated polycarbonate is 15g / 10min, the bromine content is 55%, the United States Great Lakes company produces, acrylic acid core-shell copolymer (IM) American Rohm Produced by the company, TiO 2 Produced by DuPont Company, PTFE micropowder particle size is 5 microns, produced by DuPont Company, antioxidant is produced by Swiss Ciba Company, and lubricant is produced by ICI Company.

[0024] The above-mentioned components are mixed evenly, and then extruded and granulated with a twin-screw extruder, and the processing temperatur...

Embodiment 2

[0026] The composition component of the present embodiment is: polycarbonate (PC) 90 kilograms, containing brominated polycarbonate 3 kilograms, acrylic acid core-shell copolymer (IM) 2 kilograms, TiO 2 10 kg, 0.1 kg of antioxidant 168, 0.3 kg of lubricant PE wax, 0.5 kg of PTFE micropowder.

[0027] Wherein the melt index of polycarbonate is 15g / 10min, produced by GE Company, the melt index of polycarbonate containing bromide is 12g / 10min, the bromine content is 58%, produced by Teijin Chemical Co., Ltd., acrylic acid core-shell copolymer (IM) Japan Mitsubishi Produced by a chemical company, TiO 2 Produced by DuPont Company, PTFE micropowder particle size is 8 microns, produced by DuPont Company, antioxidant is produced by Swiss Ciba Company, and lubricant is produced by ICI Company.

[0028] The above-mentioned components are mixed evenly, and then extruded and granulated with a twin-screw extruder, and the processing temperature is: 250° C. (plasticizing section).

Embodiment 3

[0030] The composition component of the present embodiment is: polycarbonate (PC) 80 kilograms, containing brominated polycarbonate 4 kilograms, acrylic acid core-shell copolymer (IM) 3 kilograms, TiO 2 5 kg, 0.3 kg of antioxidant 300, 0.4 kg of lubricant montanate, and 0.4 kg of PTFE micropowder.

[0031] The above-mentioned components are mixed evenly, and then extruded and granulated with a twin-screw extruder, and the processing temperature is 270° C. (plasticizing section).

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PUM

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Abstract

The invention provides a polycarbonate combination with high light reflectivity, which comprises 63 to 90 shares of polycarbonate (PC), 3 to 6 shares of bromide polycarbonate, 2 to 5 shares of Acrylic Acid Core-Shell Copolymer, 5 to 25 shares of TiO2, 0.1 to 0.3 shares of antioxidant, 0.2 to 0.4 shares of lubricant and 0.3 to 0.5 shares PTFE fine powder. The combination has the advantages of anti-flaming, high light reflectivity, high temperature resistant, easy modeling and good opacity and can be used for producing the spare parts for electronic electric appliances such as the LED display, the LCD display, etc.

Description

technical field [0001] The invention relates to a polycarbonate composition with high light reflectivity and application thereof, belonging to the field of polymer alloys. Background technique [0002] Polycarbonate, especially bisphenol A polycarbonate has outstanding impact toughness, excellent electrical insulation, wide temperature range, stable product size, and is a kind of engineering plastic with good comprehensive performance. Although polycarbonate has good overall performance, some of its defects such as easy stress cracking, sensitivity to notch, poor wear resistance and poor processing fluidity need to be improved. [0003] Although there are many different reinforced and flame-retardant polycarbonate materials, they still cannot meet the special needs in the field of optoelectronics. For example, some parts of LED displays and LCE displays require materials with flame High temperature, high ink adhesion, good dimensional stability, and easy processing and mold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/524C08L33/02C08K3/22
Inventor 吴全德
Owner 广东瑞能新材料有限公司
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