Novel heat conducting composite material and LED (light emitting diode) shell composite injection molding process

A thermally conductive composite material, LED housing technology, applied in the coating and other directions, can solve the problems of weak connection strength, safety accidents, troublesome connection between the aluminum radiator and the LED housing, etc., to achieve simple process, safe use, combined with tight effect

Inactive Publication Date: 2011-09-07
施汉林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, LED lighting technology also has shortcomings, that is, heat dissipation. Since LEDs generate a lot of heat during lighting, how to solve the heat dissipation problem has become the key to the development of LED lighting technology.
At present, aluminum heat sinks are generally used, and there ar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example one

[0034] A composite injection molding process of a new type of thermally conductive composite material and LED housing includes the following steps:

[0035] A. Drying of raw materials: Weigh the raw materials and put them into a vacuum dryer for vacuum drying to reduce the moisture content of the raw materials to less than 0.2%; the vacuum degree in the vacuum dryer in this embodiment is -75Kpa, the vacuum drying temperature 90℃~100℃, the vacuum drying time is 11 hours;

[0036] The composition of raw materials is:

[0037] Polyhexamethylene adipamide: 91 parts by weight,

[0038] Graphite: 6 parts by weight,

[0039] Molybdenum disulfide: 2 parts by weight,

[0040] Nano calcium carbonate: 1 part by weight,

[0041] Glass fiber: 2 parts by weight,

[0042] Silane coupling agent as coupling agent: 0.5 parts by weight,

[0043] Antioxidant BHT as an antioxidant: 1 part by weight,

[0044] Oleamide as a lubricant: 0.5 parts by weight;

[0045] B. Plasticization: Put the dri...

Example Embodiment

[0050] Example two

[0051] A composite injection molding process of a new type of thermally conductive composite material and LED housing includes the following steps:

[0052] A. Drying of raw materials: Weigh the raw materials and put them into a vacuum dryer for vacuum drying to reduce the moisture content of the raw materials to less than 0.2%; the vacuum degree in the vacuum dryer in this embodiment is -94Kpa, the vacuum drying temperature 90℃~100℃, vacuum drying time is 9 hours;

[0053] The composition of raw materials is:

[0054] Polyhexamethylene adipamide: 50 parts by weight,

[0055] Graphite: 5 parts by weight,

[0056] Molybdenum disulfide: 10 parts by weight,

[0057] Nano calcium carbonate: 0.7 parts by weight,

[0058] Glass fiber: 15 parts by weight,

[0059] Titanate coupling agent as coupling agent: 3 parts by weight,

[0060] Antioxidant 1010 as an antioxidant: 1.2 parts by weight,

[0061] Stearic acid as a lubricant: 0.8 parts by weight;

[0062] B. Plasticization: Put...

Example Embodiment

[0067] Example three

[0068] A composite injection molding process of a new type of thermally conductive composite material and LED housing includes the following steps:

[0069] A. Drying of raw materials: Weigh the raw materials, put them into a vacuum dryer for vacuum drying, and reduce the moisture content of the raw materials to less than 0.2%; the vacuum degree in the vacuum dryer in this embodiment is -90Kpa, the vacuum drying temperature 90℃~100℃, the vacuum drying time is 10 hours;

[0070] The composition of raw materials is:

[0071] Polyhexamethylene adipamide: 46 parts by weight,

[0072] Graphite: 10 parts by weight,

[0073] Molybdenum disulfide: 8 parts by weight,

[0074] Nano calcium carbonate: 0.5 parts by weight,

[0075] Glass fiber: 10 parts by weight,

[0076] Aluminate coupling agent as coupling agent: 2 parts by weight,

[0077] Antioxidant BHA as an antioxidant: 1.5 parts by weight,

[0078] Butyl stearate as a lubricant: 1.5 parts by weight;

[0079] B. Plasticizat...

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PUM

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Abstract

The invention discloses a novel heat conducting composite material and an LED (light emitting diode) shell composite injection molding process. The process comprises the following steps of: A. raw material drying: weighing raw materials, and feeding the raw materials in a vacuum drier for vacuum drying; B. plasticizing: feeding the dried raw materials in the material cylinder of a screw rod type injection molding machine for plasticizing; C. putting an LED shell in a mold cavity of a closed mold of the screw rod type injection molding machine for injection molding; D. annealing: putting the LED shell obtained in the step C in an oven and standing still; and E. humidifying: putting the LED shell annealed in the step D in boiling water, and then taking out to obtain the finished product. The heat conducting composite material is injection-molded on the LED shell through injection molding process, thereby forming a plastic layer used as a radiator; as an insulating body, the radiator is safe to use, and the radiating property of the radiator is same as or even better than that of an aluminum radiator; and through the adoption of the injection molding process, the plastic radiator and the LED shell are combined more closely, and the process is simple and convenient.

Description

(1) Technical field [0001] The invention relates to a composite injection molding process of a heat-conducting composite material and an LED casing. (2) Background technology [0002] LED lighting technology is increasingly becoming a lighting trend due to its energy-saving advantages. However, LED lighting technology also has disadvantages, that is, heat dissipation. Since LEDs generate a lot of heat during lighting, how to solve the heat dissipation problem has become the key to the development of LED lighting technology. At present, aluminum heat sinks are generally used, and there are still disadvantages: aluminum is a conductive material, which can easily cause the current of the LED lamp to flow to the aluminum heat sink, resulting in a safety accident; the connection between the aluminum heat sink and the LED shell It is also troublesome, and the connection strength is not strong. (3) Contents of the invention [0003] In order to overcome the above-mentioned shor...

Claims

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Application Information

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IPC IPC(8): B29C45/00C08L77/06C08K13/04C08K3/04C08K3/30C08K3/26C08K7/14
Inventor 施汉林
Owner 施汉林
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