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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 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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A composite injection molding process of a novel heat-conducting composite material and an LED housing, comprising the following steps:

[0035] A. Raw material drying: Weigh the raw material, put the raw material into a vacuum dryer and carry out vacuum drying, so that the water content of the raw material is reduced to below 0.2%; the vacuum degree in the vacuum dryer in this embodiment is -75Kpa, and the temperature of vacuum drying The temperature is 90℃~100℃, and the vacuum drying time is 11 hours;

[0036] Wherein the composition of raw material 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 antioxidant: 1 part by weight,

[0044] Oleamide as lubricant: 0.5 parts by we...

Embodiment 2

[0051] A composite injection molding process of a novel heat-conducting composite material and an LED housing, comprising the following steps:

[0052] A. Raw material drying: Weigh the raw material, put the raw material into a vacuum dryer and carry out vacuum drying, so that the water content of the raw material is reduced to below 0.2%; the vacuum degree in the vacuum dryer in this embodiment is -94Kpa, and the temperature of vacuum drying The temperature is 90℃~100℃, and the vacuum drying time is 9 hours;

[0053] Wherein the composition of raw material 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] A titanate coupling agent as a coupling agent: 3 parts by weight,

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

[0061] As the stearic acid of ...

Embodiment 3

[0068] A composite injection molding process of a novel heat-conducting composite material and an LED housing, comprising the following steps:

[0069] A. Raw material drying: Weigh the raw material, put the raw material into a vacuum dryer and carry out vacuum drying, so that the water content of the raw material is reduced to below 0.2%; the vacuum degree in the vacuum dryer in this embodiment is -90Kpa, and the temperature of vacuum drying The temperature is 90℃~100℃, and the vacuum drying time is 10 hours;

[0070] Wherein the composition of raw material 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 antioxidant: 1.5 parts by weight,

[0078] Butyl stearate as lubricant: 1....

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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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