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Insulating and heat dissipating coating composition, and insulating and heat dissipating unit formed thereby

A heat dissipation coating and heat dissipation unit technology, applied in the direction of epoxy resin coating, coating, electrical components, etc., can solve the problem that the insulating heat dissipation coating is difficult to achieve durability, heat dissipation performance, poor surface quality of the insulating heat dissipation coating, It is difficult to solve problems such as heat dissipation and electrical insulation to achieve excellent heat dissipation performance, excellent surface quality, and excellent smoothness

Pending Publication Date: 2019-01-04
AMOGREENTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, many of the various fillers included in heat dissipation coatings for improving heat dissipation are also electrically conductive, and in this case, there is a problem that it is difficult to use in applications requiring both heat dissipation and electrical insulation
[0006] Moreover, even if insulation and heat dissipation are exhibited at the same time, it is difficult for the realized insulating heat dissipation coating to meet the requirements of physical properties such as durability, heat dissipation performance, and adhesion to the surface to be coated at the same time. The surface of the layer is uneven or the filler protrudes on the surface of the insulating heat dissipation coating, etc., and there is a problem that the surface quality of the insulating heat dissipation coating is very poor
[0007] Furthermore, a heat dissipation coating having excellent heat dissipation characteristics is excellent in thermal conductivity only within the layer, but has poor heat radiation characteristics at the interface between the heat dissipation coating and the air layer, and therefore, there is a problem that it is not easy to radiate heat to the outside

Method used

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  • Insulating and heat dissipating coating composition, and insulating and heat dissipating unit formed thereby
  • Insulating and heat dissipating coating composition, and insulating and heat dissipating unit formed thereby
  • Insulating and heat dissipating coating composition, and insulating and heat dissipating unit formed thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] Mixing and stirring a compound, that is, a coating forming component including 60 parts by weight of a curing agent in a weight ratio of 1:1 with respect to 100 parts by weight of a compound represented by the following Chemical Formula 1 as a main resin Comprising polyethylene polyamine as a first curing agent and 2,4,6-tris[N,N-dimethylamino]methyl]phenol as a second curing agent, 47 parts by weight have an average particle diameter of 5 μm and The ratio of D50 and D97 is silicon carbide of 1:1.6, 3 parts by weight of a physical property enhancing component (Shanghai Tech Polymer Technology, Tech-7130) as an epoxy silane compound, 44 parts by weight of talc as a colorant, 44 parts by weight 2-(2'-hydroxy-3,5'-di( 1,1-dimethylbenzyl-phenyl)-benzotriazole, 1 part by weight of 2-hydroxyphenylbenzothiazole as an antioxidant, 5 parts by weight of isobutyraldehyde and urea as a dispersant Condensate, 13 parts by weight of 1-butanol as solvent, 13 parts by weight of n-butyl...

Embodiment 2～23

[0131] In addition to changing the average particle size, particle size distribution, weight ratio of curing agent, and molecular weight of the main resin of the insulating heat-dissipating filler as shown in Table 1, Table 2 or Table 3, the rest are prepared in the same manner as in Example 1. The insulating heat-dissipating coating composition shown in Table 1, Table 2, Table 3 or Table 4.

experiment example 1

[0135] The heat-dissipating coating compositions prepared in Examples and Comparative Examples were spray-coated on the entire surface of a substrate formed of an aluminum material (Al1050) with a thickness of 1.5 mm, a width of 35 mm, and a length of 34 mm to be treated so that the final thickness 25 μm, and then heat treatment at a temperature of 150° C. for 10 minutes to prepare a heat dissipation unit formed with an insulating heat dissipation coating, and then evaluate the following physical properties, which are shown in Table 1 to Table 4.

[0136] 1. Thermal conductivity evaluation

[0137] After placing the cooling unit at the center of an acrylic chamber with a width, length and height of 32cm×30cm×30cm, respectively, the temperature of the chamber and the sample were adjusted to 25±0.2°C. After that, an LED having a width and a length of 20 mm×20 mm, respectively, was adhered to a heat dissipation unit by TIM (conductive tape: 1 W / mk) to serve as a heat source, ther...

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Abstract

An insulating and heat dissipating coating composition is provided. According to one embodiment of the present invention, the insulating and heat dissipating coating composition contains: a coating layer formation component comprising a base resin; and an insulating and heat dissipating filler. Therefore, the coating composition has excellent thermal conductivity and excellent heat dissipation, thereby exhibiting excellent heat dissipation performance and simultaneously enabling an insulating and heat dissipating coating layer having insulation to be implemented. In addition, a heat dissipation coating layer implemented thereby has very excellent adhesion to a surface to be coated, thereby remarkably preventing the separation of a coating layer during use and, after the coating layer is formed, enabling the durability of a coating layer to be maintained even in the presence of physical and chemical stimuli such as external heat, organic solvents, moisture, and impact. Furthermore, theformed insulating and heat dissipating coating layer has a very smooth surface and excellent smoothness so as to have excellent surface quality, thereby being widely applicable to all industries requiring simultaneous insulation and heat dissipation.

Description

technical field [0001] The present invention relates to an insulating and heat-dissipating coating composition, more specifically, to an insulating and heat-dissipating coating composition exhibiting both heat dissipation and insulation and an insulating and heat-dissipating unit coated therewith. Background technique [0002] Generally, a heat dissipation member is mounted on a heat-generating part to prevent misoperation due to heat generated in various parts provided in the device when the electronic device is used. A heat dissipation member such as a heat dissipation plate or a heat sink is generally made of a metal having high thermal conductivity so that heat in a device or part can be quickly discharged to the outside. [0003] As an example, the above-mentioned heat sink generally adopts the following structure, that is, by heating and melting aluminum, copper and its alloy materials at high temperature, and then using a metal mold with a predetermined shape to extru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/61C09D5/25C09D201/00H05K7/20
CPCC09D5/00C09D201/00C09D7/40C08K3/013C08K5/0041C08K3/14C08K2201/003C09D163/00C08G2650/56C08G59/502C08G59/56C09D7/61C09D7/63H05K7/20427C08K5/17C08G59/42C08G59/245C08K3/34C08G59/58
Inventor 金文会黄胜载黄文暎
Owner AMOGREENTECH CO LTD
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