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High-strength and high-thermal conductivity polythene for LED (Light Emitting Diode) lamp radiator and preparation method of high-strength and high-thermal conductivity polythene

A LED lamp and polyethylene technology, which is applied in the field of plastic processing, can solve the problems of limiting the application of thermally conductive composite materials and reducing the mechanical properties of composite materials, and achieve the effects of low production cost, improved mechanical strength, and improved heat resistance

Inactive Publication Date: 2017-09-12
泉州盈创新材料技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in order to obtain polyethylene composites with high thermal conductivity, a large amount of thermally conductive fillers will be added to the matrix. Due to the addition o

Method used

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  • High-strength and high-thermal conductivity polythene for LED (Light Emitting Diode) lamp radiator and preparation method of high-strength and high-thermal conductivity polythene

Examples

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Effect test

Embodiment 1

[0025] A high-strength and high-thermal-conductivity polyethylene for LED lamp heat sinks, the basic formula and weight ratio are: 30 parts of ultra-high molecular weight polyethylene, 10 parts of lanthanum oxide, 5 parts of hyperbranched polyamide ester rare earth complex, powdered polyimide 7 parts of amine, 4 parts of SEBS grafted with maleic anhydride, 15 parts of carbon black modified by coupling agent, and 1 part of composite antioxidant.

[0026] The above-mentioned high-strength high-thermal-conductivity polyethylene, its preparation process steps are as follows:

[0027] (1) Weigh the raw materials in the formula according to the weight ratio and add them to the high-mixer, stir for 20 minutes, and mix well;

[0028] (2) Put the mixed raw materials in step (1) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: the temperature range of the barrel of the twin-screw extruder is 230-260 °C, the die temper...

Embodiment 2

[0030] A high-strength and high-thermal-conductivity polyethylene for LED lamp heat sinks, the basic formula and weight ratio are: 40 parts of ultra-high molecular weight polyethylene, 18 parts of cerium oxide, 14 parts of hyperbranched polyamide ester rare earth complex, powdered polyimide 16 parts of amine, 12 parts of SEBS grafted with maleic anhydride, 25 parts of carbon black modified by coupling agent, and 5 parts of composite antioxidant.

[0031] The above-mentioned high-strength high-thermal-conductivity polyethylene, its preparation process steps are as follows:

[0032] (1) Weigh the raw materials in the formula according to the weight ratio and add them to the high-mixer, stir for 40 minutes, and mix well;

[0033] (2) Put the mixed raw materials in step (1) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: the temperature range of the barrel of the twin-screw extruder is 230-260 °C, the die tempe...

Embodiment 3

[0035] A high-strength and high-thermal-conduction polyethylene for LED lamp heat sinks, the basic formula and weight ratio are: 35 parts of ultra-high molecular weight polyethylene, 14 parts of cerium oxide, 9 parts of hyperbranched polyamide ester rare earth complex, powdered polyimide 12 parts of amine, 8 parts of maleic anhydride grafted SEBS, 20 parts of carbon black modified by coupling agent, and 3 parts of composite antioxidant.

[0036] The above-mentioned high-strength high-thermal-conductivity polyethylene, its preparation process steps are as follows:

[0037] (1) Weigh the raw materials in the formula according to the weight ratio and add them to the high mixer, stir for 25 minutes, and mix well;

[0038] (2) Put the mixed raw materials in step (1) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: the temperature range of the barrel of the twin-screw extruder is 230-260 °C, the die temperature is...

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Abstract

The invention discloses high-strength and high-thermal conductivity polythene for an LED lamp radiator and a preparation method of the high-strength and high-thermal conductivity polythene The high-strength and high-thermal conductivity polythene in a basic formula is prepared from the following components in parts by weight: 30 to 40 parts of polythene, 10 to 18 parts of heat conductive agent, 5 to 14 parts of rare-earth coupling agent, 7 to 16 parts of heat resistant agent, 4 to 12 parts of maleic anhydride grafted copolymer, 15 to 25 parts of coupling agent modified thermal conductive filler and 1 to 5 parts of composite antioxidant. The preparation method disclosed by the invention comprises the following steps: feeding uniformly-mixed materials into a charging hopper of a double screw extruder and extruding and granulating by a twin screw. The high-strength and high-thermal conductive polyethylene prepared by the preparation method disclosed by the invention has the advantages of high mechanical strength, good thermal conductivity and heat resistance and low production cost, and is suitable for the fields of LED lamps and electronic and electrical appliances.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to a high-strength and high-thermal-conductivity polyethylene for LED lamp radiators and a preparation method thereof. Background technique [0002] Polymer materials are often used as auxiliary materials related to electricity because of their high resistivity, excellent processability, light weight and low price. In the field of LED lamps, a large number of polymer materials have been used as the main material, such as radiators and lampshades. However, since LED lamps generate more and more heat per unit time and volume, the effective discharge of heat has become an urgent problem to be solved. The original low thermal conductivity polymer materials can no longer meet the actual needs. Therefore, it is necessary to improve the thermal conductivity of polymers to meet the thermal conductivity requirements of polymer materials with the development of science and technology. [0...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L51/00C08L79/08C08K13/06C08K9/04C08K3/04C08K3/22C08K5/134C08K5/526C09K5/14
CPCC08L27/06C08K2003/221C08K2003/2213C08L2201/08C08L2203/20C08L2205/03C08L2207/068C09K5/14C08L51/006C08L79/08C08K13/06C08K9/08C08K3/04C08K3/22C08K5/1345C08K5/526
Inventor 刘凤姐
Owner 泉州盈创新材料技术开发有限公司
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