JPS6017426B2 - Thermal conductive electrically insulating composition - Google Patents
Thermal conductive electrically insulating compositionInfo
- Publication number
- JPS6017426B2 JPS6017426B2 JP2341981A JP2341981A JPS6017426B2 JP S6017426 B2 JPS6017426 B2 JP S6017426B2 JP 2341981 A JP2341981 A JP 2341981A JP 2341981 A JP2341981 A JP 2341981A JP S6017426 B2 JPS6017426 B2 JP S6017426B2
- Authority
- JP
- Japan
- Prior art keywords
- electrically insulating
- insulating composition
- conductive electrically
- silicone rubber
- thermal conductive
- 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.)
- Expired
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
【発明の詳細な説明】
本発明は熱伝導性と電気絶縁性にすぐれ、しかもシート
状に成形可能で機械的特性の良好な熱伝導性電気絶縁性
組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermally conductive, electrically insulating composition that has excellent thermal conductivity and electrical insulation, can be formed into a sheet, and has good mechanical properties.
電子部品では使用時の発熱により該部品の特性低下ある
いは破損の危険があり、発熱する部品には放熱体が取り
付けられているのが通例である。両者は一般に電気絶縁
されていないため、通常は両者の間にマィカやポリエス
テルフィルムなどの絶縁体を介して固定される。しかし
前者は均一性、機械的強度に乏しく、後者は熱伝導性の
点で劣るため、さらにすぐれた放熱シートが要望されて
いる。Electronic components are at risk of deteriorating their characteristics or being damaged due to the heat generated during use, and a heat radiator is usually attached to the component that generates heat. Since both are generally not electrically insulated, they are usually fixed with an insulator such as mica or polyester film interposed between them. However, the former is poor in uniformity and mechanical strength, and the latter is inferior in thermal conductivity, so there is a demand for an even better heat dissipation sheet.
これには熱伝導率の大きな窒化棚素粉末を充填したシリ
コーンゴムよりなる組成物あるいはシートが提案されて
いる。For this purpose, compositions or sheets made of silicone rubber filled with nitrided shelphathyl powder having high thermal conductivity have been proposed.
それは窒化棚素の熱伝導率がシーＪコーンゴムのそれに
比較して２桁以上大きく、窒化棚素を高充填できれば、
それだけ熱伝導率が向上するからである。しかし、窒化
棚素粉末はシリコーンゴムとの相溶性に乏しく、さらに
粒子が崩壊し易い。The thermal conductivity of nitrided shelpools is more than two orders of magnitude higher than that of Sea J-cone rubber, and if high loading of nitrided shelpools can be achieved,
This is because the thermal conductivity is improved accordingly. However, nitrided shelphathic powder has poor compatibility with silicone rubber, and furthermore, the particles tend to disintegrate.
そのため高充填した場合、元来グリーン強度の小さいシ
リコーンゴムでは混糠が難かしく、また涙練できる限界
内の充填量であっても製品の機械的特性が著しく低下し
てしまう欠点があった。これに対しては無定形あるいは
結晶質のシリカ粉末を補強材として添加することにより
多少改善されるが、そうすると逆に組成物の硬度が増加
し、シート成形が難しくなる欠点があった。Therefore, when the silicone rubber is highly filled, it is difficult to mix it with silicone rubber, which originally has a low green strength, and even if the filling amount is within the limit that can be kneaded, the mechanical properties of the product are significantly deteriorated. This problem can be somewhat improved by adding amorphous or crystalline silica powder as a reinforcing material, but this increases the hardness of the composition and has the drawback of making it difficult to form a sheet.
本発明はこれらの欠点を解決し、高充填が可能で、シー
ト成形性がよく、しかも機械的特性の優れた熱伝導性電
気絶縁性組成物を提供することにある。すなわち、本発
明は窒化棚素などの熱伝導性に優れた充填剤とシリコー
ンゴムとを主成分として成る熱伝導性電気絶縁性組成物
において、該シリコーンゴムとしてムーニ粘度ＭＬ＋４
（１００００）が、１０〜４０の範囲となるようにあら
かじめ架橋したゲルポリマを使用したことにある。The object of the present invention is to solve these drawbacks and provide a thermally conductive, electrically insulating composition that can be highly filled, has good sheet formability, and has excellent mechanical properties. That is, the present invention provides a thermally conductive electrically insulating composition mainly composed of a filler having excellent thermal conductivity such as a shelchloride nitride and a silicone rubber, the silicone rubber having a Mooney viscosity of ML+4.
(10,000) is in the range of 10 to 40 using a gel polymer that has been crosslinked in advance.
本発明に用いるゲルポリマは、ムーニ粘度Ｍ山，十４（
１０び○）が１０〜４０の範囲好ましくは２０〜３０の
範囲となるように架橋したものである。The gel polymer used in the present invention has a Mooney viscosity of M mountain, 14 (
10 and ○) is in the range of 10 to 40, preferably in the range of 20 to 30.
１０以下ではシリコーンゴムのグリーン強度が製品の機
械的特性を向上させる程大きくなく、４０以上では架橋
が進み過ぎるためゴム状となって縞練が不可能となる。If it is less than 10, the green strength of the silicone rubber will not be high enough to improve the mechanical properties of the product, and if it is more than 40, crosslinking will proceed too much and it will become rubbery, making striping impossible.
ゲルルポリマの製造方法としては、有機過酸化物による
化学架橋あるいは電子線、放写線などによる照射架橋な
どであり、その方法は限定されない。また窒化棚素の他
、一般に使用される無機充填剤あるいは酸化防止剤、良
好な作業性を得るための溶剤などを添加することはなん
ら差し支えない。以下、本発明を第１表に示した実施例
によって詳細に説明する。The method for producing the gel polymer includes chemical crosslinking using an organic peroxide or irradiation crosslinking using an electron beam, radiographic radiation, etc., and the method is not limited. In addition to the nitrided shelium, there is no problem in adding commonly used inorganic fillers or antioxidants, solvents for obtaining good workability, and the like. The present invention will be explained in detail below using examples shown in Table 1.
なお、本実施例および参考例ではシリコーンゴムとして
信越化学製ＫＥ−５２０Ｕ−ＦＲを用い、架橋剤には東
レシリコーン製ＲＣ−２（２，４ージクロロベンゾイル
パーオキサィド５０％含有シリコーン油）を使用した。In this example and reference example, KE-520U-FR manufactured by Shin-Etsu Chemical was used as the silicone rubber, and RC-2 manufactured by Toray Silicone (silicone oil containing 50% 2,4-dichlorobenzoyl peroxide) was used as the crosslinking agent. It was used.
鶴練作業はすべて６インチロールを用い、その難易度を
判定した。またシート作製には、室温のカレンダーロー
ルを用い、厚さ０．２側のシートを作製した時の加工性
についてその難易度を測定した。さらに厚さ０．２側の
シートを１８０℃−３０分架橋し、引張速度２００帆／
ｍｊｎで引張試験を行なった。またこれとは昇りに厚さ
２肌のシートを作製し、ＳＳ−ＴＣ−１箱型（柴山科学
器械製作所製）を用い熱伝導性を測定した。A 6-inch roll was used for all crane training work, and the difficulty level was determined. In addition, a room temperature calendar roll was used to produce the sheet, and the difficulty level of workability was measured when a sheet with a thickness of 0.2 was produced. Furthermore, the sheet on the 0.2 thickness side was cross-linked at 180℃ for 30 minutes, and the tensile speed was 200 sails/
A tensile test was conducted using mjn. In addition, a sheet with a thickness of 2 layers was prepared, and its thermal conductivity was measured using an SS-TC-1 box type (manufactured by Shibayama Scientific Instruments Manufacturing Co., Ltd.).
上記実施例および参考例から明らかなように、本発明に
よるゲルポリマを使用すれば、窒化棚素のような充填剤
を高充填しても、混糠作業、シート引取性、シートの機
械的特性の良好な組成物が得られる。As is clear from the above examples and reference examples, if the gel polymer according to the present invention is used, even if the gel polymer is highly loaded with fillers such as nitride shelmets, the bran mixing work, sheet drawability, and mechanical properties of the sheet can be improved. A good composition is obtained.
Claims (1)
た充填剤とを主成分としてなる熱伝導性電気絶縁性組成
物において、前記シリコーンゴムとしてムーニ粘度ＭＬ
＿１＿＋＿４（１０００℃）が１０〜４０の範囲となる
ようにあらかじめ架橋してあるゲルポリマを用いたこと
を特徴とする熱伝導性電気絶縁性組成物。1 In a thermally conductive electrically insulating composition mainly composed of silicone rubber and a filler with excellent thermal conductivity such as boron nitride, the silicone rubber has a Mooney viscosity ML.
A thermally conductive electrically insulating composition characterized by using a gel polymer that has been crosslinked in advance so that _1_+_4 (1000°C) is in the range of 10 to 40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2341981A JPS6017426B2 (en) | 1981-02-19 | 1981-02-19 | Thermal conductive electrically insulating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2341981A JPS6017426B2 (en) | 1981-02-19 | 1981-02-19 | Thermal conductive electrically insulating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57137356A JPS57137356A (en) | 1982-08-24 |
| JPS6017426B2 true JPS6017426B2 (en) | 1985-05-02 |
Family
ID=12109974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2341981A Expired JPS6017426B2 (en) | 1981-02-19 | 1981-02-19 | Thermal conductive electrically insulating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6017426B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59122558A (en) * | 1982-12-29 | 1984-07-16 | Toray Silicone Co Ltd | Organopolysiloxane composition for coating of semiconductor element |
| JPS59176347A (en) * | 1983-03-25 | 1984-10-05 | Toray Silicone Co Ltd | Organopolysiloxane composition |
| JPS62223246A (en) * | 1986-03-25 | 1987-10-01 | Mitsubishi Electric Corp | Highly thermally conductive resin composition for use in sealing semiconductor |
| US4852646A (en) * | 1987-06-16 | 1989-08-01 | Raychem Corporation | Thermally conductive gel materials |
| JPS649249A (en) * | 1987-06-30 | 1989-01-12 | Mitsuboshi Belting Ltd | Vibration-proofing and vibration-damping rubber composition |
| US7208192B2 (en) | 2002-05-31 | 2007-04-24 | Parker-Hannifin Corporation | Thermally or electrically-conductive form-in-place gap filter |
-
1981
- 1981-02-19 JP JP2341981A patent/JPS6017426B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57137356A (en) | 1982-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4612139A (en) | Semi-conductive polyolefin compositions and cables covered with same | |
| JPS596242A (en) | Thermal deformation-resistant thermoplastic semiconductor composition | |
| JPS6017426B2 (en) | Thermal conductive electrically insulating composition | |
| JPS6197319A (en) | Compound for sealing electric and electronic device and its production | |
| JPH08239522A (en) | Cross-linked flame-retardant resin composition and cross-linked flame-retardant insulated wire using same | |
| JPH039140B2 (en) | ||
| JP5473926B2 (en) | Reduction of dielectric loss through the use of organoclays in semiconductor or insulator compositions. | |
| KR102222598B1 (en) | Thermal conductive adhesive composition using metal materials and carbon fillers | |
| JPS6164739A (en) | Semiconductive resin composition having both bondability and strippability | |
| JPH0822716A (en) | High dielectric constant insulating rubber material | |
| US5124206A (en) | Electrically insulated cable | |
| JPS59221902A (en) | Insulating sheet with excellent thermal conductivity | |
| SU771138A1 (en) | Composition based on low-molecular weight siloxane rubber | |
| JPS60106856A (en) | Thermally conductive high-molecular material | |
| JPS62186412A (en) | Heat resistant insulated wire | |
| JPS6249895B2 (en) | ||
| JPS5864704A (en) | Semiconductive mixture | |
| JPH01141928A (en) | Flame-retardant composition | |
| JPS60199041A (en) | Semiconductive composition | |
| JPS5885210A (en) | Semiconductive molded article capable of thermally recovering | |
| JPH0564401B2 (en) | ||
| JP2005298773A (en) | Semiconductive heat conductive material | |
| JPS60208340A (en) | Semiconductive composition | |
| JPS61203508A (en) | Manufacture of insulating material | |
| KR20220043792A (en) | Manufacturing Method Of Resin Composition |