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Polycarbonate modified material used in sunshade board of LED lamp and preparation method thereof

A technology of polycarbonate and LED lamps, which is applied in the field of polymer materials, can solve problems such as not suitable for LED lamp shades, and achieve the effect of dimensional stability

Inactive Publication Date: 2010-11-17
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light transmittance of pure polycarbonate resin is 89-92%, which is a transparent material and is not suitable for use as a light shield for LED lights

Method used

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  • Polycarbonate modified material used in sunshade board of LED lamp and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Components and content: polycarbonate 1700 powder 73.5%, impact modifier C223A 5%, filler barium sulfate masterbatch 20%, surface treatment agent KR-TTS 0.8%, compound antioxidant 1076 0.1% 168 0.1% , Processing aid EBS 0.5%.

[0041] First put the filler in an oven at 90-100 degrees and bake for 6 hours to remove moisture; then put it into a high-speed mixer and mix it with surface treatment agent at high speed, the mixing speed is 600r / min, the mixing temperature is 70-90℃, and mix for 15 minutes stand-by;

[0042] Then add the baked polycarbonate resin (drying condition: 120 degrees for 4 hours), impact modifier, antioxidant and processing aid to the high mixer and mix for 15 minutes;

[0043] The mixed raw materials are melted and extruded by a twin-screw extruder, and granulated;

[0044] The twin-screw extruder process is as follows: the temperature of the first zone of the twin-screw extruder is 100°C, the temperature of the second zone is 160°C, the temperatur...

Embodiment 2

[0046] Components and content: polycarbonate 1700 powder 47.5%, impact modifier C223A 10%, filler barium sulfate masterbatch 40%, surface treatment agent KR-TTS 1.5%, compound antioxidant 1076 0.3% 168 0.3% , Processing aid EBS 0.4%.

[0047] All the other are with embodiment 1.

[0048]The twin-screw extruder process is as follows: the temperature of the first zone of the twin-screw extruder is 120°C, the temperature of the second zone is 160°C, the temperature of the third zone is 250°C, the temperature of the fourth zone is 245°C, the temperature of the fifth zone is 240°C, and the temperature of the sixth zone is 240°C. The temperature is 235°C, the temperature of the seventh zone is 235, the temperature of the eighth zone is 240, the temperature of the die head is 250, the screw speed is 420r / min, and the feeding speed of the main engine is 20r / min.

Embodiment 3

[0050] Components and content: polycarbonate 1700 powder 60%, impact modifier C223A 8%, filler barium sulfate masterbatch 30%, surface treatment agent KR-TTS 1%, compound antioxidant 1076 0.3% 1680.3%, Processing aid EBS 0.4%.

[0051] All the other are with embodiment 1.

[0052] The twin-screw extruder process is as follows: the temperature of the first zone of the twin-screw extruder is 110°C, the temperature of the second zone is 180°C, the temperature of the third zone is 235°C, the temperature of the fourth zone is 235°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zone is 230°C. The temperature is 230°C, the temperature of the seventh zone is 225, the temperature of the eighth zone is 235, the temperature of the die head is 240, the screw speed is 450r / min, and the feeding speed of the main engine is 30r / min.

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Abstract

The invention discloses a polycarbonate modified material used in a sunshade board of an LED lamp and a preparation method thereof. The polycarbonate modified material used in a sunshade board of an LED lamp comprises the following components in weight percent: 47.5-73.5% of polycarbonate resin powder, 5-10% of impact modifier, 20-40% of padding, 0.8-1.5% of surface treating agent, 0.2-0.6% of antioxidant and 0.2-0.6% of processing agent. In the invention, through screening the padding and optimizing the formula and the processing technology, the modified materials obtained from the preparation have the properties of high sunshade, light surface, high strength, reliable size and the like, and the modified material can serve as a specific material used in the sunshade board of the LED lamp.

Description

[technical field] [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polycarbonate modified material for an LED lamp shade and a preparation method thereof. [Background technique] [0002] LED (Light Emitting Diode), or light-emitting diode, is a solid-state semiconductor device that can directly convert electricity into light. It is small in size, low in power consumption, high in brightness, low in heat, durable and environmentally friendly. These inherent characteristics determine that it is the most ideal light source to replace traditional light sources and has a wide range of uses. It can be used as a display light source for display screens and traffic signals; as an LCD backlight, LED has the characteristics of long life, high luminous efficiency, no interference and high cost performance, and has been widely used in electronic watches, mobile phones, BP machines, electronic calculators and credit card machines ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/04C08L23/08C08L33/10C08K13/06C08K9/04C08K3/30C08K3/22B29B9/06B29C47/92F21V1/22F21Y101/02B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 徐东徐永付天英
Owner SHENZHEN KEJU NEW MATERIAL
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