JP2004071385A - Highly electro-conductive material and highly thermal-conductive material - Google Patents

Highly electro-conductive material and highly thermal-conductive material Download PDF

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JP2004071385A
JP2004071385A JP2002230021A JP2002230021A JP2004071385A JP 2004071385 A JP2004071385 A JP 2004071385A JP 2002230021 A JP2002230021 A JP 2002230021A JP 2002230021 A JP2002230021 A JP 2002230021A JP 2004071385 A JP2004071385 A JP 2004071385A
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Prior art keywords
phase
conductive material
powder
highly
block copolymer
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Japanese (ja)
Inventor
Naofumi Chiwata
千綿　直文
Takanori Yamazaki
山崎　孝則
Kiyoshi Watanabe
渡辺　清
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Hitachi Cable Ltd
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Hitachi Cable Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly electro-conductive material and a highly thermal-conductive material, whereby an inexpensive and excellent electro(thermal)-conductivity can be obtained while reducing a mixed amount of powder having electro-conductivity and thermal conductivity. <P>SOLUTION: A base polymer is formed of a polymer end phase 1 and a soft intermediate block phase 2. The powder 3 having high electro-conductivity is selectively and highly densely dispersed, thereby obtains the highly electro-conductive material 10. Since the powder 3 is dispersed only in the intermediate block phase 2, and does not enter into the styrene end block 1, the inexpensive and highly electro-conductive material excellent in high electro-conductivity and formability can be obtained with a comparatively small amount of powder. This structure is the same as that in the highly thermal-conductive material, and it can be materialized only by replacing the powder 3 with one having high thermal-conductivity. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、高電気伝導性材料及び高熱伝導性材料に関し、特に、カーボンブラック、金属粉等の電気伝導性粉体の少量をポリマに分散させることによりローコストで高い電気伝導性を得ることのできる電気伝導性材料、及び、グラファイト、窒化ホウ素、窒化アルミニウム等の高熱伝導性粉体をポリマに混合させてローコストで高い熱伝導性を得ることのできる高熱伝導性材料に関する。
【０００２】
【従来の技術】
図２は、従来の電気伝導性材料の構造を示す。
図２に示すように、電気伝導性材料２０は、カーボンブラック、金属粉、金属短繊維等の粉体２１（電気伝導性粉体）を単純にポリマ材料２２中に高濃度に分散及び成形して作られている。また、従来の熱伝導性材料の構造も、図２に示す如くであり、熱伝導性粉体としての粉体２１にグラファイト、窒化ホウ素、窒化アルミニウム等を用い、この粉体２１をポリマ材料２２中に分散及び成形して作られている。
【０００３】
【発明が解決しようとする課題】
しかし、従来の熱伝導材料及び電気伝導性材料によると、高い電気伝導性や高い熱伝導性を得るには、電気伝導性粉体や熱伝導性粉体を高い濃度で混合する必要がある。ところが、材料自体の粘度及び硬度が上昇し、成形作業が極めて困難になるほか、高価な電気伝導性粉体や熱伝導性粉体を多量に使用することになる。このため、電気伝導性材料及び熱伝導材料の価格低減が図れない。
【０００４】
本発明の目的は、電気伝導性粉体をポリマ中の特定の領域に選択的に分散させることにより、少ない混合量で良好な電気伝導性及び成型加工性を得ることのできる高電気伝導性材料を提供することにある。
【０００５】
本発明の他の目的は、熱伝導性粉体をポリマ中の特定の領域に選択的に分散させることにより、少ない混合量で良好な熱伝導性及び成型加工性をを得ることのできる高熱伝導性材料を提供することにある。
【０００６】
【課題を解決するための手段】
本発明は、上記の目的を達成するため、第１の特徴として、末端相に剛直なポリマ相を有し、中間ブロック相に柔軟なゴム相を有するブロック共重合ポリマと、良好な電気伝導性を持ち、前記ブロック共重合ポリマの前記中間ブロック相に選択的に分散される電気伝導性粉体とを備える高電気伝導性材料を提供する。
【０００７】
この構成によれば、ブロック共重合ポリマの中間ブロック相に電気伝導性粉体が選択的に分散される。この結果、高価な電気伝導性粉体の使用量を少なくしながら、良好な電気伝導性を有する高電気伝導性材料を得ることができる。電気伝導性粉体の使用量を低減できることにより材料コストが低く抑えられ、電気伝導性粉体の混合を低濃度にできるために材料の成型加工性を維持でき、しかも複雑な形状の成形が可能な高電気伝導性材料を得ることができる。
【０００８】
本発明は、上記の目的を達成するため、第２の特徴として、末端相に剛直なポリマ相を有し、中間ブロック相に柔軟なゴム相を有するブロック共重合ポリマと、良好な熱伝導性を持ち、前記ブロック共重合ポリマの前記中間ブロック相に選択的に分散される熱伝導性粉体とを備える高熱伝導性材料を提供する。
【０００９】
この構成によれば、ブロック共重合ポリマの中間ブロック相に熱伝導性粉体が選択的に分散されることにより、高価な熱伝導性粉体の使用量を少なくしながら良好な熱伝導性を有する高熱伝導性材料を得ることができる。熱伝導性粉体の使用量を低減できることにより材料コストが低く抑えられ、熱伝導性粉体の混合を低濃度にできることで材料の成型加工性を維持でき、しかも複雑な形状の成形が可能な高熱伝導性材料を得ることができる。
【００１０】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
図１は、本発明の高電気伝導性材料及び高熱伝導性材料の構造を示す。
高電気伝導性材料の場合、図１において、ポリマーによる末端相１と柔軟な中間ブロック相２（ポリマーのエラストマー）によりベースポリマを形成し、その中間ブロック相２に選択的に良好な電気伝導性を有する粉体３を高密度に分散させている。粉体３は中間ブロック相２のみに分散するため、比較的少ない量の粉体３で高電気伝導性材料１０を得ることができる。そして、材料全体では、末端相１に粉体３が侵入していないため、全体に占める粉体３の割合は小さく、成型加工性を損なうことも無い。
【００１１】
同様に、高熱伝導性材料は、上記ベースポリマの中間ブロック相２に選択的に良好な熱伝導性を有する粉体３を高密度に分散させることにより作ることができる。粉体３は中間ブロック相２のみに分散するため、比較的少ない量の粉体３で高熱伝導材料（１０）を得ることができる。そして、材料全体では、末端相１に粉体３が侵入していないため、全体に占める粉体３の割合は小さく、成型加工性を損なうことも無い。
【００１２】
上記ベースポリマとして、末端相１に剛直なポリマ相と中間ブロック相２に柔軟なゴム相を有するブロック共重合ポリマ、例えば、両末端部にポリスチレン（Ｓ）相を持つブロックコポリマで、中間ブロック相２にポリブタジエン（Ｂ）を用いたＳＢＳ、ポリイソプレン（Ｉ）を用いたＳＩＳ、ポリエチレン／ブチレン（ＥＢ）を用いたＳＥＢＳ、ポリエチレン／プロピレンを用いたＳＥＰＳを選定する。高電気伝導性材料の場合、上記ベースポリマにカーボンブラックや金属粉等の電気伝導性を有する粉体３を混合して導電性を付与する。この場合、電気伝導性を有する粉体３は、選択したポリマの柔軟な中間ブロック相に選択的に分散されるため、少ない混合量で良好な電気伝導性を得ることができる。電気伝導性の粉体３として、金、銀、銅、アルミニウム、鉄、マグネシウム、ニッケル等の金属、これら金属の合金、更には、カーボン、グラファイトから選ばれる１種或いは２種以上の材料を用いることができる。
【００１３】
一方、高熱伝導性材料を得る場合においても、上記したベースポリマを選択することにより、少ない熱伝導性の粉体３（窒化ホウ素、窒化アルミニウム、窒化ケイ素等の窒化金属から選ばれる１種或いは２種以上の材料のほか、金、銀、銅、アルミニウム、鉄、マグネシウム、ニッケル等の金属、これら金属の合金、カーボン、グラファイト等の材料）の混合により、良好な熱伝導性を得ることができる。
【００１４】
【実施例】
〔実施例１〕
次に、本発明の実施例について説明する。以下においては、スチレンが末端相、エチレン／プロピレンゴムを有するブロック共重合ＳＥＰＳ（スチレン含有量５０ｖｏｌ％、比重０．９３ｇ／ｃｍ３　）が中間ブロック相のベースポリマを用い、更に、熱伝導性を有する粉体３として窒化ホウ素粒子（平均粒径２０ｎｍ）を用いた場合について説明する。
【００１５】
２軸押出し機を用いて、熱伝導性を有する粉体３としての窒化ホウ素粒子が体積比で４５ｖｏｌ％になるまでベースポリマに混合すると、これら粒子はスチレン端末相ではなく中間ブロック相のＥＰ相に選択的に分散するため、このＥＰ相での粒子濃度は６０ｖｏｌ％以上と非常に高くなる。この結果、この相においては、これら粒子が相互に接触し、１０Ｗ／ｍＫ以上（熱線法を用いた測定法、ＪＩＳ　Ｒ２６１８による）の非常に高い熱伝導率が得られる。一方、末端相を持たない単に均一なエチレン／プロピレンゴムに４５ｖｏｌ％混合した場合は、粒子間の距離が開いてしまい、熱伝導性は５Ｗ／ｍＫ（熱線法を用いた測定ＪＩＳ
Ｒ２６１８）に満たない。
【００１６】
また、熱伝導粒子混合量はポリマ全体として４５ｖｏｌ％であるので、材料の成形加工性を損なうことも無く、製品の生産性を低下させることがない。
【００１７】
〔実施例２〕
電気伝導性材料において、ベースポリマとして、末端相がスチレン、中間ブロック相がエチレン／プロピレンゴムを有するブロック共重合ＳＥＰＳ（スチレン含有量５０％、比重０．９２ｇ／ｃｍ３　）を用い、導電性カーボン粒子（平均粒径３０ｎｍ、ＤＢＰ吸油量４９５ｃｍ３　／１００ｇ〔１５ｇ法〕、ＢＥＴ比表面積１２７０ｍ２　）を用いた場合を説明する。
【００１８】
上記ベースポリマの１００重量部に対し、２軸押出し機を用いてカーボン粒子を２０重量部混合した。その際、カーボン粒子はスチレン端末相ではなく中間ブロック相のＥＰ相に選択的に分散され、このＥＰ相での粒子濃度は２５ｗｔ％以上と非常に高くなった。この結果、中間ブロック相においてはカーボン粒子が相互に接触し、体積抵抗率が１０２　Ωｍ以下（ＪＩＳ　Ｋ６９１１による）の高い電気伝導性が得られた。また、カーボン粒子の混合量がポリマ全体として１７ｗｔ％であるので、材料の成形加工性を損なうことも無く、製品の生産性を低下させることもない。
【００１９】
一方、末端相を持たない単に均一なエチレン／プロピレンゴムにカーボン粒子を２０重量部混合して比較例を作成した。この比較例では、粒子間の距離が開いてしまい、体積抵抗率は１０４　Ωｍ以上（ＪＩＳ　Ｋ６９１１による）になった。
【００２０】
【発明の効果】
以上より明らかなように、本発明の高電気伝導性材料によれば、電気伝導性粉体はブロック共重合ポリマの中間ブロック相に選択的に分散される。これにより、高価な電気伝導性粉体の使用量を少なくしながら良好な熱伝導性を有する電気伝導性粉体を得ることができる。電気伝導性粉体の使用量を低減できることにより材料コストが低く抑えられ、電気伝導性粉体の混合を低濃度にできることで材料の成型加工性を維持でき、しかも複雑な形状の成形が可能な高電気伝導性材料を得ることができる。
【００２１】
また、本発明の高熱伝導性材料によれば、熱伝導性粉体はブロック共重合ポリマの中間ブロック相に選択的に分散される。これにより、高価な熱伝導性粉体の使用量を少なくしながら良好な熱伝導性を有する高熱伝導性材料を得ることができる。熱伝導性粉体の使用量を低減できることにより材料コストが低く抑えられ、熱伝導性粉体の混合を低濃度にできることで材料の成型加工性を維持でき、しかも複雑な形状の成形が可能な高熱伝導性材料を得ることができる。
【図面の簡単な説明】
【図１】本発明の高電気伝導性材料及び高熱伝導性材料の構造を示す断面図である。
【図２】従来の電気伝導性材料の構造を示す断面図である。
【符号の説明】
１　末端相
２　中間ブロック相
３　粉体
１０　高電気伝導性材料（高熱伝導材料）
１１　粉体
１２　ポリマ材料
２０　電気伝導性材料[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a high electrical conductivity material and a high thermal conductivity material, and in particular, can obtain high electrical conductivity at low cost by dispersing a small amount of an electrical conductive powder such as carbon black and metal powder in a polymer. The present invention relates to an electrically conductive material and a highly thermally conductive material which can obtain high thermal conductivity at low cost by mixing a polymer with a high thermal conductive powder such as graphite, boron nitride, and aluminum nitride.
[0002]
[Prior art]
FIG. 2 shows the structure of a conventional electrically conductive material.
As shown in FIG. 2, the electrically conductive material 20 is obtained by simply dispersing and molding a powder 21 (electrically conductive powder) such as carbon black, metal powder, or short metal fiber in a polymer material 22 at a high concentration. It is made. The structure of a conventional heat conductive material is also as shown in FIG. 2. A powder 21 as a heat conductive powder is made of graphite, boron nitride, aluminum nitride or the like. It is made by dispersion and molding.
[0003]
[Problems to be solved by the invention]
However, according to the conventional heat conductive material and electric conductive material, it is necessary to mix the electric conductive powder and the heat conductive powder at a high concentration in order to obtain high electric conductivity and high heat conductivity. However, the viscosity and hardness of the material itself increase, making the molding operation extremely difficult. In addition, a large amount of expensive electric conductive powder or heat conductive powder is used. For this reason, the price of the electrically conductive material and the heat conductive material cannot be reduced.
[0004]
An object of the present invention is to selectively disperse an electric conductive powder in a specific region in a polymer, thereby obtaining a high electric conductive material capable of obtaining good electric conductivity and molding workability with a small mixing amount. Is to provide.
[0005]
Another object of the present invention is to selectively disperse a heat conductive powder in a specific region in a polymer, thereby obtaining high heat conductivity and molding workability with a small mixing amount. To provide a conductive material.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has, as a first feature, a block copolymer having a rigid polymer phase in a terminal phase and a flexible rubber phase in an intermediate block phase, and a good electric conductivity. And a conductive powder selectively dispersed in the intermediate block phase of the block copolymer.
[0007]
According to this configuration, the electrically conductive powder is selectively dispersed in the intermediate block phase of the block copolymer. As a result, it is possible to obtain a highly electrically conductive material having good electrical conductivity while reducing the amount of expensive electrically conductive powder used. The material cost can be kept low by reducing the amount of electric conductive powder used, and the mixing of the electric conductive powder can be made low concentration, so that the material can be processed and processed, and molding of complicated shapes is possible. A highly electric conductive material can be obtained.
[0008]
In order to achieve the above object, the present invention has, as a second feature, a block copolymer having a rigid polymer phase in a terminal phase and a soft rubber phase in an intermediate block phase, and a good thermal conductivity. And a thermally conductive powder selectively dispersed in the intermediate block phase of the block copolymer.
[0009]
According to this configuration, since the heat conductive powder is selectively dispersed in the intermediate block phase of the block copolymer, good heat conductivity can be obtained while reducing the amount of expensive heat conductive powder used. A highly heat conductive material having the same can be obtained. The material cost can be kept low by reducing the amount of the heat conductive powder used, and the molding process of the material can be maintained by mixing the heat conductive powder at a low concentration, and the molding of complicated shapes is possible. A high heat conductive material can be obtained.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the structure of the highly electrically conductive material and the highly thermally conductive material of the present invention.
In the case of a highly conductive material, in FIG. 1, a base polymer is formed by a terminal phase 1 made of a polymer and a flexible intermediate block phase 2 (an elastomer of a polymer). Are dispersed at high density. Since the powder 3 is dispersed only in the intermediate block phase 2, the highly electrically conductive material 10 can be obtained with a relatively small amount of the powder 3. Since the powder 3 does not penetrate into the terminal phase 1 in the entire material, the proportion of the powder 3 in the entire material is small, and the moldability is not impaired.
[0011]
Similarly, the high thermal conductive material can be produced by selectively dispersing the powder 3 having good thermal conductivity in the intermediate block phase 2 of the base polymer at a high density. Since the powder 3 is dispersed only in the intermediate block phase 2, the high heat conductive material (10) can be obtained with a relatively small amount of the powder 3. Since the powder 3 does not penetrate into the terminal phase 1 in the entire material, the proportion of the powder 3 in the entire material is small, and the moldability is not impaired.
[0012]
As the base polymer, a block copolymer having a rigid polymer phase in the terminal phase 1 and a flexible rubber phase in the intermediate block phase 2, for example, a block copolymer having a polystyrene (S) phase at both ends, and an intermediate block phase For SBS, SBS using polybutadiene (B), SIS using polyisoprene (I), SEBS using polyethylene / butylene (EB), and SEPS using polyethylene / propylene are selected. In the case of a highly conductive material, conductivity is imparted by mixing the base polymer with powder 3 having electrical conductivity such as carbon black or metal powder. In this case, since the powder 3 having electric conductivity is selectively dispersed in the flexible intermediate block phase of the selected polymer, good electric conductivity can be obtained with a small mixing amount. As the electrically conductive powder 3, a metal such as gold, silver, copper, aluminum, iron, magnesium and nickel, an alloy of these metals, and one or more materials selected from carbon and graphite are used. be able to.
[0013]
On the other hand, even in the case of obtaining a high heat conductive material, by selecting the above-mentioned base polymer, a powder 3 having a low heat conductivity (one or more selected from metal nitrides selected from metal nitrides such as boron nitride, aluminum nitride and silicon nitride) can be used. Good thermal conductivity can be obtained by mixing various materials such as gold, silver, copper, aluminum, iron, magnesium, nickel and other metals, alloys of these metals, carbon, graphite, etc.). .
[0014]
【Example】
[Example 1]
Next, examples of the present invention will be described. In the following, block copolymer SEPS (styrene content: 50 vol%, specific gravity: 0.93 g / cm 3 ) having a terminal phase of styrene and an ethylene / propylene rubber uses a base polymer of an intermediate block phase, and further has a thermal conductivity. The case where boron nitride particles (average particle diameter: 20 nm) are used as the powder 3 will be described.
[0015]
Using a twin-screw extruder, when boron nitride particles as the thermally conductive powder 3 are mixed with the base polymer until the volume ratio becomes 45 vol%, these particles are not in the styrene terminal phase but in the EP phase of the intermediate block phase. In the EP phase, the particle concentration is as high as 60 vol% or more. As a result, in this phase, the particles come into contact with each other, and a very high thermal conductivity of 10 W / mK or more (according to JIS R2618, a measurement method using a hot wire method) is obtained. On the other hand, if 45 vol% is mixed with simply homogeneous ethylene / propylene rubber having no terminal phase, the distance between the particles is widened, and the thermal conductivity is 5 W / mK (measured according to JIS
R2618).
[0016]
Further, since the mixed amount of the heat conductive particles is 45 vol% as a whole polymer, the molding processability of the material is not impaired, and the productivity of the product is not reduced.
[0017]
[Example 2]
In the electrically conductive material, a block copolymer SEPS (styrene content: 50%, specific gravity: 0.92 g / cm 3 ) having a terminal phase of styrene and an intermediate block phase of ethylene / propylene rubber is used as a base polymer. particles (average particle diameter 30 nm, DBP oil absorption 495cm 3 / 100g [15g method], BET specific surface area 1270 m 2) for explaining the case of using.
[0018]
20 parts by weight of carbon particles were mixed with 100 parts by weight of the base polymer using a twin screw extruder. At that time, the carbon particles were selectively dispersed not in the styrene terminal phase but in the EP phase of the intermediate block phase, and the particle concentration in the EP phase was as high as 25 wt% or more. As a result, in the intermediate block phase, the carbon particles were in contact with each other, and a high electrical conductivity with a volume resistivity of 10 2 Ωm or less (according to JIS K6911) was obtained. Further, since the mixing amount of the carbon particles is 17% by weight as a whole polymer, there is no loss in the processability of the material and no decrease in the productivity of the product.
[0019]
On the other hand, a comparative example was prepared by mixing 20 parts by weight of carbon particles with simply uniform ethylene / propylene rubber having no terminal phase. In this comparative example, the distance between the particles was widened, and the volume resistivity was 10 4 Ωm or more (according to JIS K6911).
[0020]
【The invention's effect】
As is clear from the above, according to the highly electrically conductive material of the present invention, the electrically conductive powder is selectively dispersed in the intermediate block phase of the block copolymer. This makes it possible to obtain an electrically conductive powder having good thermal conductivity while reducing the amount of the expensive electrically conductive powder used. By reducing the amount of electric conductive powder used, material costs can be kept low, and by mixing electric conductive powder at a low concentration, material moldability can be maintained, and molding of complex shapes is possible. A highly electrically conductive material can be obtained.
[0021]
Further, according to the high heat conductive material of the present invention, the heat conductive powder is selectively dispersed in the intermediate block phase of the block copolymer. This makes it possible to obtain a high heat conductive material having good heat conductivity while reducing the amount of expensive heat conductive powder used. The material cost can be kept low by reducing the amount of the heat conductive powder used, and the molding process of the material can be maintained by mixing the heat conductive powder at a low concentration, and the molding of complicated shapes is possible. A high heat conductive material can be obtained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the structure of a highly electrically conductive material and a highly thermally conductive material of the present invention.
FIG. 2 is a cross-sectional view showing a structure of a conventional electrically conductive material.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Terminal phase 2 Intermediate block phase 3 Powder 10 High electric conductive material (high heat conductive material)
11 Powder 12 Polymer material 20 Electrically conductive material

Claims (4)

末端相に剛直なポリマ相を有し、中間ブロック相に柔軟なゴム相を有するブロック共重合ポリマと、
良好な電気伝導性を持ち、前記ブロック共重合ポリマの前記中間ブロック相に選択的に分散される電気伝導性粉体とを備える高電気伝導性材料。A block copolymer having a rigid polymer phase in the terminal phase and a flexible rubber phase in the intermediate block phase;
A highly electrically conductive material having good electrical conductivity and comprising an electrically conductive powder selectively dispersed in the intermediate block phase of the block copolymer. 前記ブロック共重合ポリマは、両末端部がポリスチレン（Ｓ）相を持つブロックコポリマであり、中間ブロック相にポリブタジエン（Ｂ）を用いたＳＢＳ、ポリイソプレン（Ｉ）を用いたＳＩＳ、ポリエチレン／ブチレン（ＥＢ）を用いたＳＥＢＳ、又はポリエチレン／プロピレンを用いたＳＥＰＳであり、
前記電気伝導性粉体は、金、銀、銅、アルミニウム、鉄、マグネシウム、ニッケル、これら金属の合金、カーボン、又は、グラファイトの少なくとも１種を含むことを特徴とする請求項１記載の高電気伝導性材料。The block copolymer is a block copolymer having a polystyrene (S) phase at both ends, and SBS using polybutadiene (B) as an intermediate block phase, SIS using polyisoprene (I), polyethylene / butylene ( SEBS using EB) or SEPS using polyethylene / propylene,
2. The high electric power according to claim 1, wherein the electrically conductive powder contains at least one of gold, silver, copper, aluminum, iron, magnesium, nickel, an alloy of these metals, carbon, and graphite. Conductive material. 末端相に剛直なポリマ相を有し、中間ブロック相に柔軟なゴム相を有するブロック共重合ポリマと、
良好な熱伝導性を持ち、前記ブロック共重合ポリマの前記中間ブロック相に選択的に分散される熱伝導性粉体とを備える高熱伝導性材料。A block copolymer having a rigid polymer phase in the terminal phase and a flexible rubber phase in the intermediate block phase;
A thermally conductive powder having good thermal conductivity and being selectively dispersed in the intermediate block phase of the block copolymer. 前記ブロック共重合ポリマは、両末端部がポリスチレン（Ｓ）相を持つブロックコポリマであり、中間ブロック相にポリブタジエン（Ｂ）を用いたＳＢＳ、ポリイソプレン（Ｉ）を用いたＳＩＳ、ポリエチレン／ブチレン（ＥＢ）を用いたＳＥＢＳ、又はポリエチレン／プロピレンを用いたＳＥＰＳであり、
前記熱伝導性粉体は、金、銀、銅、アルミニウム、鉄、マグネシウム、ニッケル、これら金属の合金、カーボン、グラファイト、窒化ホウ素、窒化アルミニウム、又は、窒化ケイ素の少なくとも１種を含むことを特徴とする請求項３記載の高熱伝導性材料。The block copolymer is a block copolymer having a polystyrene (S) phase at both ends, and SBS using polybutadiene (B) as an intermediate block phase, SIS using polyisoprene (I), polyethylene / butylene ( SEBS using EB) or SEPS using polyethylene / propylene,
The heat conductive powder contains at least one of gold, silver, copper, aluminum, iron, magnesium, nickel, alloys of these metals, carbon, graphite, boron nitride, aluminum nitride, and silicon nitride. The high thermal conductive material according to claim 3, wherein
JP2002230021A 2002-08-07 2002-08-07 Highly electro-conductive material and highly thermal-conductive material Pending JP2004071385A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007314667A (en) * 2006-05-25 2007-12-06 Kaneka Corp Inorganic fine particle-containing resin composition
CN103366859A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Conductive slurry for solar cell and preparation method thereof
US10648750B2 (en) 2014-10-29 2020-05-12 Dow Global Technologies Llc Olefin block composite thermally conductive materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007314667A (en) * 2006-05-25 2007-12-06 Kaneka Corp Inorganic fine particle-containing resin composition
CN103366859A (en) * 2012-03-29 2013-10-23 比亚迪股份有限公司 Conductive slurry for solar cell and preparation method thereof
US10648750B2 (en) 2014-10-29 2020-05-12 Dow Global Technologies Llc Olefin block composite thermally conductive materials

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