KR101436871B1 - Method for manufacturing coating compound for heat sink - Google Patents
Method for manufacturing coating compound for heat sink Download PDFInfo
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- KR101436871B1 KR101436871B1 KR1020140023783A KR20140023783A KR101436871B1 KR 101436871 B1 KR101436871 B1 KR 101436871B1 KR 1020140023783 A KR1020140023783 A KR 1020140023783A KR 20140023783 A KR20140023783 A KR 20140023783A KR 101436871 B1 KR101436871 B1 KR 101436871B1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
Description
본 발명은 방열판용 코팅제의 제조 방법에 관한 것이다.
The present invention relates to a method for producing a coating agent for a heat sink.
일반적으로, 방열판은 전자기기의 내부로부터 발생된 열을 외부로 확산시킴으로써 과열로 인한 제품의 수명 단축이나 고장을 방지하는 장치이다. Generally, a heat sink is a device for preventing shortening or failure of a product due to overheating by spreading heat generated from the inside of an electronic device to the outside.
종래에는 열을 효율적으로 방출시키기 위한 방법으로, 방열판 구조에 관한 기술이 지속적으로 개발되었고, 대한민국 등록특허공보 제10-1070849호 및 제10-0964643호에는 방열 효과를 향상시킬 수 있는 방열판 구조에 관해 제시된 바 있다.Conventionally, as a method for efficiently releasing heat, a technique relating to a heat sink structure has been continuously developed, and Korean Patent Registration Nos. 10-1070849 and 10-0964643 disclose a heat sink structure capable of improving heat radiation effect It has been suggested.
그러나, 종래의 방열판으로 전자제품의 경량화 및 소형화를 시도하기에는 구조적인 제약이 존재하므로, 방열 효과를 기존에 비해 향상시키면서도 전자제품의 경량화를 가능하게 하는 기술의 개발이 요구되는 실정이다.
However, since there is a structural restriction to attempt to reduce the weight and size of electronic products with conventional heat sinks, development of a technology that makes it possible to reduce the weight of electronic products while improving the heat radiation effect is required.
본 발명은 상술한 문제점을 해결하기 위한 것으로, 기존의 방열판에 비해 방열 효과를 향상시키며, 전자제품의 경량화를 가능하게 하는 기술을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a technology for improving the heat radiating effect and reducing the weight of electronic products as compared with conventional heat sinks.
본 발명이 해결하려는 과제는 전술한 과제로 제한되지 아니하며, 언급되지 아니한 또 다른 기술적 과제들은 후술할 내용으로부터 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.
The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.
이러한 목적을 달성하기 위하여 본 발명의 일 태양으로 방열판용 코팅제의 제조 방법은 입자 표면에 카르복실기가 결합된 나노다이아몬드 분말을 옥타데실아민(Octadecylamine)에 첨가하여 제1혼합물을 생성하는 제1혼합물 생성 단계; 및 상기 제1혼합물을 분산시키는 제1혼합물 분산 단계; 를 포함할 수 있다.In order to accomplish the above object, a method of manufacturing a coating composition for a heat sink according to an aspect of the present invention includes the steps of: preparing a first mixture by adding a nano diamond powder having a carboxyl group bonded thereto to octadecylamine, ; And a first mixture dispersing step of dispersing the first mixture; . ≪ / RTI >
또한, 제1혼합물 생성 단계에서 상기 입자 표면에 카르복실기가 결합된 나노다이아몬드 분말은 하기 화학식 1로 표현될 수 있다.In addition, the nano diamond powder having a carboxyl group bonded to the surface of the particles in the first mixture producing step may be represented by the following formula (1).
[화학식 1][Chemical Formula 1]
ND-(COOH)n ND- (COOH) n
(여기서, ND는 나노다이아몬드 단일입자, n은 1 이상의 정수)(Where ND is a nano-diamond single particle, n is an integer of 1 or more)
그리고, 제1혼합물 생성 단계에서 상기 제1혼합물은 하기 반응식 1에 의해 생성될 수 있다.And, in the first mixture producing step, the first mixture can be produced by the following reaction formula (1).
[반응식 1][Reaction Scheme 1]
(여기서, ND는 나노다이아몬드 단일입자)(Where ND is a nanodiamond single particle)
또한, 제1혼합물 분산 단계에서는 초음파 처리를 통해 분산시킬 수 있다.In addition, in the first mixture dispersing step, it can be dispersed by ultrasonic treatment.
아울러, 방열판용 코팅제의 제조 방법은 상기 제1혼합물 분산 단계가 종료된 이후, 생성된 혼합물을 여과 및 건조시키는 분말화 단계; 를 더 포함할 수 있다.
In addition, a method for producing a coating for a heat sink includes: a pulverization step of filtrating and drying the resulting mixture after the first mixture dispersion step is completed; As shown in FIG.
이상에서 설명한 바와 같이 본 발명에 따라 제조된 제1혼합물은 열전도성이 우수하므로, 제1혼합물을 방열판에 코팅할 경우에는 기존의 방열판 구조에 비해 방열 효과가 향상되며, 방열판의 구조에 따른 제약을 받지 않으므로 방열판의 두께를 감소시켜 전자제품의 경량화 및 슬림화가 가능한 효과가 있다.As described above, since the first mixture prepared according to the present invention has excellent thermal conductivity, when the first mixture is coated on the heat dissipating plate, the heat dissipating effect is improved as compared with the conventional heat dissipating structure, It is possible to reduce the thickness of the heat sink to make the electronic device light and slim.
아울러, 본 발명은 신속한 방열을 통해 전자제품의 소비전력을 감소시키고, 제품의 수명을 연장하는 효과가 있다.In addition, the present invention has the effect of reducing the power consumption of the electronic product through rapid heat dissipation and prolonging the life of the product.
본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.
The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.
도1은 본 발명의 일 실시예에 따른 방열판용 코팅제의 제조 방법을 도시한 흐름도이다.
도2는 본 발명의 일 실시예 및 비교예의 방열판 온도 측정값을 도시한 것이다.1 is a flowchart illustrating a method of manufacturing a coating agent for a heat sink according to an embodiment of the present invention.
Figure 2 shows the heat sink temperature measurements of an embodiment and a comparative example of the present invention.
본 발명의 바람직한 실시예에 대하여 첨부된 도면을 참조하여 더 구체적으로 설명하되, 이미 주지되어진 기술적 부분에 대해서는 설명의 간결함을 위해 생략하거나 압축하기로 한다.
The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for simplicity of explanation.
본 발명의 일 실시예에 따른 방열판용 코팅제의 제조 방법에 대하여 도1에 도시된 흐름도를 따라 설명하되 편의상 순서를 붙여 설명한다.
A method of manufacturing a coating agent for a heat sink according to an embodiment of the present invention will be described with reference to the flowchart shown in FIG. 1 for convenience.
1. 제1혼합물 생성 단계<S101>1. First Mixture Generating Step < S101 >
본 단계에서는 입자 표면에 카르복실기가 결합된 나노다이아몬드 분말을 옥타데실아민(Octadecylamine, CH3(CH2)17NH2) 용액에 첨가하여 제1혼합물을 생성하는 단계가 진행된다.In this step, a step of producing a first mixture is carried out by adding a nanodiamond powder having a carboxyl group bonded to its surface to a solution of octadecylamine (CH 3 (CH 2 ) 17 NH 2 ).
여기서, 입자 표면에 카르복실기가 결합된 나노다이아몬드 분말은 하기 화학식 1로 표현될 수 있다.Here, the nano diamond powder having a carboxyl group bonded to the particle surface can be represented by the following formula (1).
[화학식 1][Chemical Formula 1]
ND-(COOH)n ND- (COOH) n
(여기서, ND는 나노다이아몬드 단일입자, n은 1 이상의 정수)(Where ND is a nano-diamond single particle, n is an integer of 1 or more)
본 단계에서 화학식 1의 화합물은 옥타데실아민과 반응하여 제1혼합물을 생성하며, 이러한 과정은 하기 반응식 1로 표현될 수 있다.In this step, the compound of formula (I) reacts with octadecylamine to form a first mixture, which can be represented by the following reaction formula (1).
[반응식 1][Reaction Scheme 1]
(여기서, ND는 나노다이아몬드 단일입자)(Where ND is a nanodiamond single particle)
즉, 나노다이아몬드 입자 표면의 카르복실기는 옥타데실아민의 아민기와 반응하여 카르복실기의 수소 하나가 아민기로 옮겨가면서 각각 양전하와 음전하를 띠면서 양쪽성 이온 결합(zwitterion interaction)을 이루게 되며, 그로 인해 나노다이아몬드 입자가 소수성으로 바뀐다.That is, the carboxyl group on the surface of the nanodiamond particle reacts with the amine group of the octadecylamine, and one hydrogen of the carboxyl group is transferred to the amine group, thereby forming a positive charge and a negative charge to form a zwitterion interaction, Is changed to hydrophobic.
한편, 본 단계 이전에 폭약과 다이아몬드를 챔버 안에 투입하고 폭발시키는 화약폭발법 등의 분말화 기술을 이용하여 나노다이아몬드 분말을 제조하는 제조 단계 및 제조 단계에서 생성된 나노다이아몬드 분말을 황산 등의 강산 용액에 투입하여 나노다이아몬드 입자 표면에 카르복실기를 결합시키는 결합 단계가 선행될 수 있으며, 나노다이아몬드 분말을 제조하는 기술은 당업계에 널리 알려진 방식이므로 이와 관련된 상세한 기재는 생략하기로 한다.Meanwhile, the nanodiamond powder produced in the manufacturing step and the manufacturing step of producing the nano diamond powder by using the pulverization technique such as the explosive explosion method in which the explosive and diamond are injected into the chamber and explosion is carried out before this step, And a coupling step of binding a carboxyl group to the surface of the nanodiamond particles may be preceded. The technology for manufacturing the nanodiamond powder is well known in the art, and detailed description thereof will be omitted.
아울러, 입자 표면에 카르복실기가 결합된 나노다이아몬드 분말은 친수성인 카르복실기(COOH)로 인해 소수성 용매인 옥타데실아민과의 혼합이 용이하지 않을 수 있으므로 본 단계 이전에 카르복실기가 입자 표면에 결합된 나노다이아몬드 분말을 에탄올에 첨가하고 초음파 처리를 통해 분산시키는 에탄올 혼합 단계를 추가적으로 실시하여 나노다이아몬드 분말 및 옥타데실아민 간의 반응이 수월하게 이루어지도록 할 수 있다.
In addition, since the nanodiamond powder having a carboxyl group bonded to the particle surface may not be easily mixed with the hydrophobic solvent octadecylamine due to the hydrophilic carboxyl group (COOH), it is preferable that the nanodiamond powder Is added to ethanol and the mixture is dispersed by ultrasonic treatment, so that the reaction between the nano diamond powder and the octadecylamine can be facilitated.
2. 제1혼합물 분산 단계<S102>2. First Mixture Dispersing Step < S102 >
본 단계에서는 단계 S101에서 생성된 제1혼합물을 초음파 처리하여 분산시키는 단계가 이루어진다.
In this step, a step of dispersing and dispersing the first mixture produced in step S101 is performed.
3. 분말화 단계<S103>3. Powdering step < S103 >
단계 S102가 종료된 이후, 본 단계에서는 단계 S102에서 생성된 제1혼합물을 필터에 통과시켜 여과하고, 여과된 용액을 열 건조시켜 제1혼합물의 분말을 수득하는 과정이 이루어진다.
After the completion of step S102, in this step, the first mixture produced in step S102 is filtered through a filter, and the filtered solution is thermally dried to obtain a powder of the first mixture.
<실시예><Examples>
나노다이아몬드 입자 표면에 카르복실기를 결합하기 위해 질산(HNO3, 70%)과 황산(H2SO4, 98%)을 1:3으로 배합한 강산 용액 10L에 화약폭발법으로 제조된 나노다이아몬드 분말을 100g 첨가한 후에 2시간 동안 50℃에서 초음파 처리한다.In order to bond the carboxyl group to the surface of the nano diamond particles, 10 L of a strong acid solution containing nitric acid (HNO 3 , 70%) and sulfuric acid (H 2 SO 4 , 98%) in a ratio of 1: 3 was added to the nanodiamond powder After the addition of 100 g, sonicate at 50 캜 for 2 hours.
그 후, 증류수 1L를 첨가하여 희석시키고, 막 필터에 용액을 통과시켜 여과한 후에 여과물을 90℃ 오븐 내에서 3시간 동안 건조시켜 나노다이아몬드 표면에 복수개의 카르복실기가 부착된 분말(즉, ND-(COOH)n, 여기서 ND는 나노다이아몬드 단일입자, n은 1 이상의 정수)을 얻는다. Thereafter, 1 L of distilled water was added and diluted. The solution was passed through a membrane filter to be filtered, and then the filtrate was dried in an oven at 90 ° C for 3 hours to prepare a powder having a plurality of carboxyl groups attached to the surface of the nanodiamond (COOH) n , where ND is a nanodiamond single particle, and n is an integer of 1 or more).
얻어진 ND-(COOH)n 분말 100mg을 에탄올 50ml에 첨가한 후, 1시간 동안 50℃에서 초음파 처리하며, 초음파 처리된 용액을 옥타데실아민 50ml에 첨가하고 4시간 동안 50℃에서 초음파 처리한 후에 증류수 10ml를 혼합하여 희석시킨다. 100 mg of the obtained ND- (COOH) n powder was added to 50 ml of ethanol and ultrasonicated at 50 ° C for 1 hour. The ultrasonicated solution was added to 50 ml of octadecylamine, ultrasonicated at 50 ° C for 4 hours, And diluted by mixing 10 ml.
그 후, 막 필터에 용액을 통과시켜 여과한 후에 여과물을 90℃ 오븐 내에서 4시간 동안 건조시켜 제1혼합물 분말을 수득함으로써, 방열판용 코팅제를 제조하였다.Thereafter, the solution was passed through a membrane filter to be filtered, and then the filtrate was dried in an oven at 90 DEG C for 4 hours to obtain a first mixture powder, whereby a coating agent for a heat radiation plate was prepared.
그 후, 한국무사시도료(Amor Top)에 제1혼합물 분말을 200ppm을 첨가하여 분산(분말의 중량비는 도료의 고형분 대비 5~50%)시키고, 도료와 1:1 비율로 희석제를 투입하여 도료를 완성하였다. Thereafter, 200 ppm of the first mixture powder was added to the Amos Top (Korea) to disperse the mixture (the weight ratio of the powder was 5 to 50% of the solid content of the coating), and the diluent was added at a ratio of 1: Completed.
완성된 도료를 알루미늄 방열판에 스프레이 분사하여 20 ~ 30㎛ 두께로 코팅하고 열 건조시켰다. 스프레이 분사 및 열 건조는 2회 반복 실시되었다.The finished paint was sprayed onto an aluminum heat sink, coated to a thickness of 20 to 30 탆, and thermally dried. Spray spraying and thermal drying were repeated twice.
코팅된 알루미늄 방열판 전면에 LED를 장착한 후, 시간 경과에 따른 온도변화를 측정하였다. 90분 후에 측정된 결과를 도 2에 나타내었다.
After attaching the LED to the front of the coated aluminum heat sink, the temperature change over time was measured. The results measured after 90 minutes are shown in Fig.
<비교예><Comparative Example>
알루미늄 방열판 전면에 LED를 장착한 후, 시간 경과에 따른 온도 변화를 측정하였고, 90분 후에 측정된 결과를 도 2에 나타내었다.
After attaching the LED to the front surface of the aluminum heat sink, the temperature change with time was measured, and the result measured after 90 minutes is shown in FIG.
도 2에 도시된 바와 같이, 도료가 코팅되지 않은 비교예의 LED 기판의 경우에는 온도가 83℃까지 상승하였으나, 본 발명의 일 실시예를 이용해 제조한 도료를 도포한 LED 기판의 경우, 열전도가 우수하여 LED에서 발생한 열이 외부로 방출됨에 따라, LED 기판 자체의 온도는 77℃ 까지만 상승하는 것을 확인할 수 있다.As shown in FIG. 2, in the case of the LED substrate of the comparative example in which the paint is not coated, the temperature rises to 83 ° C. However, in the case of the LED substrate coated with the paint prepared by one embodiment of the present invention, As the heat generated by the LED is emitted to the outside, it can be confirmed that the temperature of the LED substrate itself rises to 77 ° C only.
결국, 본 발명의 바람직한 실시예에 따라 제조된 방열판용 코팅제는 아민기가 나노다이아몬드 입자 표면에 결합됨으로써 소수성을 띄므로 본 코팅제를 분사용 도료 조성물에 첨가하여 방열판의 표면에 스프레이 코팅하는 것이 용이하다.As a result, the coating agent for a heat sink manufactured according to the preferred embodiment of the present invention has hydrophobicity because the amine group is bonded to the surface of the nanodiamond particles, so that it is easy to spray the coating agent on the surface of the heat sink by adding the coating agent to the coating composition.
아울러, 본 발명에 의해 제조된 방열판용 코팅제를 이용할 경우, 열전도성이 우수하므로 기존의 방열판 구조에 비해 방열 효과가 향상되며, 방열판의 구조에 따른 제약을 받지 않으므로 방열판의 두께를 감소시켜 전자제품의 경량화 및 슬림화가 가능하다.
In addition, when the coating agent for a heat radiating plate manufactured by the present invention is used, the heat radiating effect is improved as compared with the conventional heat radiating plate structure because of the excellent thermal conductivity, and the thickness of the heat radiating plate is reduced, It is lightweight and slim.
위에서 설명한 바와 같이 본 발명에 대한 구체적인 설명은 첨부된 도면을 참조한 실시예에 의해서 이루어졌지만, 상술한 실시예는 본 발명의 바람직한 예를 들어 설명하였을 뿐이기 때문에, 본 발명이 상기의 실시예에만 국한되는 것으로 이해되어져서는 아니 되며, 본 발명의 권리범위는 후술하는 청구범위 및 그 등가개념으로 이해되어져야 할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. And the scope of the present invention should be understood as the following claims and their equivalents.
Claims (5)
상기 제1혼합물을 분산시키는 제1혼합물 분산 단계; 를 포함하며,
상기 제1혼합물 분산 단계에서는 초음파 처리를 통해 상기 제1혼합물을 분산시키는 것을 특징으로 하는
방열판용 코팅제의 제조 방법.A first mixture producing step of adding a nano diamond powder having a carboxyl group bonded to the particle surface to octadecylamine to produce a first mixture; And
A first mixture dispersing step of dispersing the first mixture; / RTI >
Wherein the first mixture is dispersed by ultrasonic treatment in the first mixture dispersing step
A method for manufacturing a coating agent for a heat sink.
상기 제1혼합물 생성 단계에서 상기 입자 표면에 카르복실기가 결합된 나노다이아몬드 분말은 하기 화학식 1로 표현되는 것을 특징으로 하는
방열판용 코팅제의 제조 방법.
[화학식 1]
ND-(COOH)n
(여기서, ND는 나노다이아몬드 단일입자, n은 1 이상의 정수)The method according to claim 1,
Wherein the nanodiamond powder having carboxyl groups bonded to the surface of the particles in the first mixture-producing step is represented by the following formula
A method for manufacturing a coating agent for a heat sink.
[Chemical Formula 1]
ND- (COOH) n
(Where ND is a nano-diamond single particle, and n is an integer of 1 or more)
상기 제1혼합물 생성 단계에서 상기 제1혼합물은 하기 반응식 1에 의해 생성되는 것을 특징으로 하는
방열판용 코팅제의 제조 방법.
[반응식 1]
(여기서, ND는 나노다이아몬드 단일입자)The method according to claim 1,
Characterized in that in the first mixture-producing step the first mixture is produced by the following reaction scheme 1
A method for manufacturing a coating agent for a heat sink.
[Reaction Scheme 1]
(Where ND is a nanodiamond single particle)
상기 제1혼합물 분산 단계가 종료된 이후, 생성된 혼합물을 여과 및 건조시키는 분말화 단계; 를 더 포함하는 것을 특징으로 하는
방열판용 코팅제의 제조 방법.The method according to claim 1,
A pulverization step of filtrating and drying the resulting mixture after the first mixture dispersion step is finished; ≪ RTI ID = 0.0 >
A method for manufacturing a coating agent for a heat sink.
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| CN101831243A (en) | 2010-04-30 | 2010-09-15 | 中国计量学院 | High-precision non-water-based nano-diamond grinding fluid and preparation method and application thereof |
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| KR101292868B1 (en) | 2011-06-28 | 2013-08-02 | 한국원자력연구원 | Nano diamond having surface coated hydrophobical silane, method for manufacturing the same, and engine oil including the same |
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| KR20090037774A (en) * | 2007-10-13 | 2009-04-16 | 나노다이아몬드 주식회사 | Nanodiamond compounds synthesized by surface functionalization |
| US20120271361A1 (en) | 2009-10-02 | 2012-10-25 | Drexel University | Functionalized Nanodiamond Reinforced Biopolymers |
| CN101831243A (en) | 2010-04-30 | 2010-09-15 | 中国计量学院 | High-precision non-water-based nano-diamond grinding fluid and preparation method and application thereof |
| KR101292868B1 (en) | 2011-06-28 | 2013-08-02 | 한국원자력연구원 | Nano diamond having surface coated hydrophobical silane, method for manufacturing the same, and engine oil including the same |
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