KR20220084414A - 열전도성 시트 및 그 제조 방법 - Google Patents
열전도성 시트 및 그 제조 방법 Download PDFInfo
- Publication number
- KR20220084414A KR20220084414A KR1020227018497A KR20227018497A KR20220084414A KR 20220084414 A KR20220084414 A KR 20220084414A KR 1020227018497 A KR1020227018497 A KR 1020227018497A KR 20227018497 A KR20227018497 A KR 20227018497A KR 20220084414 A KR20220084414 A KR 20220084414A
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- South Korea
- Prior art keywords
- thermally conductive
- conductive sheet
- sheet
- filler
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3737—Organic materials with or without a thermoconductive filler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract
하중 특성(P)=(F30-F20)/F10····(1)
(식(1)에 있어서, F10은 열전도성 시트의 10% 압축 시의 하중이고, F20은 열전도성 시트의 20% 압축 시의 하중이며, F30은 열전도성 시트의 30% 압축 시의 하중이다.)
Description
도 2는, 열전도성 시트의 열전도율을 측정하는 측정기를 설명하는 도이다.
13 : 제 2 구리제 블록
16 : 실린더
P1 : 탑재면
P2 : 가압면
S1 : 시험편
21 : 단열재
22 : 제 1 구리제 블록
23 : 제 2 구리제 블록
24 : 히터
25 : 히트 싱크
26 : 실린더
Q1 : 탑재면
Q2 : 제 2 구리제 블록의 하면
S2 : 시험편
θj0 : 제 2 구리제 블록의 온도
θj1 : 제 1 구리제 블록의 온도
Claims (11)
- 오르가노폴리실록산의 경화체로 이루어지는 매트릭스, 및 장축이 두께 방향으로 배향하고 있는 이방성 충전제를 포함하는 열전도성 충전제를 함유하는 열전도성 시트로서,
하기 (1)식으로 나타내는 하중 특성(P)이 0.1∼0.7인 열전도성 시트.
하중 특성(P)=(F30-F20)/F10····(1)
(식(1)에 있어서, F10은 열전도성 시트의 10% 압축 시의 하중이고, F20은 열전도성 시트의 20% 압축 시의 하중이며, F30은 열전도성 시트의 30% 압축 시의 하중이다.) - 제 1 항에 있어서,
산화알루미늄의 함유량이 10체적% 이하인, 열전도성 시트. - 제 1 항 또는 제 2 항에 있어서,
상기 열전도성 충전제가, 알루미늄 및 수산화알루미늄 중 적어도 어느 것으로 이루어지는 특정 열전도성 충전제를 포함하는, 열전도성 시트. - 제 3 항에 있어서,
상기 알루미늄 및 수산화알루미늄 중 적어도 어느 것으로 이루어지는 특정 열전도성 충전제의 체적 충전율이, 상기 특정 열전도성 충전제 이외의 열전도성 충전제의 체적 충전율보다 큰, 열전도성 시트. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
30% 압축했을 때의 하중(F30)이 5∼18N/□12㎜인, 열전도성 시트. - 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
10% 압축했을 때의 하중(F10)이 3.5∼10N/□12㎜인, 열전도성 시트. - 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,
오르가노폴리실록산을 포함하는 실리콘 화합물, 이방성 충전제를 포함하는 열전도성 충전제, 및 휘발성 화합물을 함유하는 열전도성 조성물로 형성된 열전도성 시트. - 제 7 항에 있어서,
상기 휘발성 화합물이 휘발성 실란 화합물인, 열전도성 시트. - 제 8 항에 있어서,
상기 열전도성 조성물에 있어서의 실리콘 화합물과 휘발성 실란 화합물의 합계 체적에 대한 휘발성 실란 화합물의 체적이 15∼50체적%인, 열전도성 시트. - 제 1 항 내지 제 9 항 중 어느 한 항에 기재된 열전도성 시트의 제조 방법으로서,
오르가노폴리실록산을 포함하는 실리콘 화합물, 이방성 충전제를 포함하는 열전도성 충전제, 및 휘발성 화합물을 함유하는 열전도성 조성물을 조제하는 조제 공정(1)과,
상기 열전도성 조성물을 가열하고, 상기 오르가노폴리실록산을 경화하여, 상기 휘발성 화합물을 보지하고 있는 상태의 1차 경화체를 형성하는 경화 공정(2)과,
상기 1차 경화체를 슬라이스함으로써, 열전도성 충전제가 노출되는 표면을 구비하는 시트를 얻는 시트화 공정(3)과,
상기 시트화 공정(3)에 의해 얻어지는 시트에 포함되는 휘발성 화합물을 휘발하는 휘발 공정(4)을 구비하는, 열전도성 시트의 제조 방법. - 제 10 항에 있어서,
상기 휘발성 화합물이, 휘발성 실란 화합물이고, 상기 휘발성 실란 화합물의 열중량 분석에서 2℃/분의 조건에서 승온했을 때의 중량 감소가 90%가 되는 온도를 T1로 했을 때, 상기 경화 공정(2)에 있어서의 가열 온도가, T1-50(℃) 이하인, 열전도성 시트의 제조 방법.
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US20220410448A1 (en) | 2022-12-29 |
CN114746486A (zh) | 2022-07-12 |
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