JP7448608B2 - ゴム樹脂材料及びそれを用いた金属基板 - Google Patents
ゴム樹脂材料及びそれを用いた金属基板 Download PDFInfo
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Description
本発明は、高誘電性且つ高誘電性を有するゴム樹脂材料を提供する。前記ゴム樹脂材料は、ゴム樹脂系に二種類の異なる無機フィラーを導入するものである。それによって、ゴム樹脂系の物性は(熱伝導性、誘電特性など)高周波・高速の要求を満たし、従来の材料に比べて、高周波高速基板材料として好適である。
本発明に係るゴム樹脂組成物は、液体ゴム30重量%~60重量%と、ポリフェニレンエーテル樹脂10重量%~30重量%と、架橋剤20重量%~40重量%とを含む。
第1の無機フィラーを添加することによって、ゴム樹脂材料の粘度を低減させ、且つゴム樹脂材料の熱伝導性を向上させることができる。以上の内容は、第1の無機フィラーの作用を簡単に説明するものであって、本発明を限定するためのものではない。実際に応用する際に、第1の無機フィラーは、ゴム樹脂材料の誘電特性を向上させることもある。
第2の無機フィラーの添加により、高誘電性ゴム樹脂材料の粘度を低減させ、且つ高誘電性ゴム樹脂材料の比誘電率を向上させることができる。以上の内容は、第2の無機フィラーの作用を簡単に説明するものであって、本発明を限定するためのものではない。実際に応用する際に、第2の無機フィラーは、ゴム樹脂材料の熱伝導性を向上させることもある。
本発明のゴム樹脂材料は、シロキサンカップリング剤を更に含んでもよい。シロキサンカップリング剤の添加は、繊維布、高熱伝導性ゴム樹脂組成物及びフィラー(第1の無機フィラー及び第2の無機フィラーを含む)の間の反応性及び相容性を向上させ、高熱伝導性金属基板の剥離強度及び耐熱性を向上させることができる。
本発明のゴム樹脂材料は、難燃剤を更に含んでもよい。難燃剤の添加により、高周波基板の難燃性を向上させることができる。例えば、難燃剤は、リン系難燃剤又は臭素系難燃剤であってもよい。好ましくは、難燃剤はハロゲンフリー難燃剤であり、即ち、臭素を含まないものである。
図1及び図2に示すように、本発明は、基材層1と、基材層1に設置した少なくとも1つの金属層2と、を備える金属基板Zを更に提供する。基材層1の材料は、前記組成を有し、高誘電性且つ高誘電性を有するゴム樹脂材料を含む。具体的に説明すると、金属基板Zは、銅箔基板(Copper Clad Laminate,CCL)であってもよい。金属層2(銅箔層)は、基材層1の片面(例えば、上面)に形成されてもよい(金属層2の数は1つのみである)。もしくは、金属層2は、基材層1の両表面(例えば、上面、下面)にそれぞれ形成されてもよい(金属層2の数は2つである)。
(1)比誘電率(10GHz):誘電分析装置(Dielectric Analyzer)(品番:HP Agilent E5071C)を用いて、10GHzの周波数での比誘電率を測定する。
(2)誘電正接(10GHz):誘電分析装置(Dielectric Analyzer)(品番:HP Agilent E5071C)を用いて、10GHzの周波数での誘電正接を測定する。
(3)剥離強度:試験方法IPC-TM-650-2.4.8に基づいて、銅箔基板の剥離強度を測定する。
(4)熱伝導率:測定方法ASTM D5470に基づいて、銅箔基板の熱伝導率を測定する。
本発明の有利な効果として、本発明に係る高い熱伝導性且つ高いゴム樹脂材料及び金属基板は、「ゴム樹脂組成物は、分子量が2500g/mol~6000g/molの液体ゴムを含む」、及び「第1の無機フィラーは、酸化アルミニウム、窒化ホウ素、酸化マグネシウム、酸化亜鉛、窒化アルミニウム、炭化ケイ素及びケイ酸アルミニウムからなる群から選択され、第2の無機フィラーは、二酸化ケイ素、チタン酸ストロンチウム、チタン酸カルシウム及び二酸化チタンからなる群から選択される」といった技術特徴によって、実際に応用する際に所望の物性(例えば、熱伝導率、誘電特性、剥離強度、耐熱性など)を達成する。
Claims (11)
- ゴム樹脂組成物、第1の無機フィラー及び第2の無機フィラーを含むゴム樹脂材料であって、
前記ゴム樹脂組成物は、
分子量が2500g/mol~6000g/molの液体ゴム30重量%~60重量%と、
ポリフェニレンエーテル樹脂10重量%~30重量%と、
架橋剤20重量%~40重量%のみを含み、
前記液体ゴムは、少なくとも1つのビニール基を含む不飽和側鎖又はビニール基を有し、
前記架橋剤は、アリル基を含み、
前記ゴム樹脂組成物100重量部に対して、前記第1の無機フィラーの添加量は、100重量部~150重量部であり、前記第2の無機フィラーの添加量は、20重量部~250重量部であり、
前記ゴム樹脂組成物100重量部に対して、前記第1の無機フィラーは、酸化アルミニウム5重量部~120重量部と、窒化ホウ素10重量部~100重量部と、ケイ酸アルミニウム30重量部~80重量部とを含み、前記第2の無機フィラーは、二酸化チタンと、チタン酸ストロンチウム、チタン酸カルシウム又はそれらの組み合わせ20重量部~50重量部と、二酸化ケイ素10重量部~40重量部と、を含む、ゴム樹脂材料。 - 前記液体ゴムを構成するモノマーは、スチレンモノマー、ブタジエンモノマー、ジビニルベンゼンモノマー及び無水マレイン酸モノマーからなる群から選択される、請求項1に記載のゴム樹脂材料。
- 前記液体ゴムの全ての末端基に占めるビニール基の割合は、30モル%~90モル%であり、前記液体ゴムの全ての末端基に占めるスチレン基の割合は、10モル%~50モル%である、請求項2に記載のゴム樹脂材料。
- 前記ブタジエンモノマーの総重量に基づいて、30重量%~90重量%の前記ブタジエンモノマーは、ビニール基を含む側鎖を有する、請求項2に記載のゴム樹脂材料。
- 前記第1の無機フィラーは、表面処理を行うことにより、アクリル基及び/又はビニール基を含む、請求項1に記載のゴム樹脂材料。
- アクリル基及び/又はビニール基を有するシロキサンカップリング剤を更に含む、請求項1に記載のゴム樹脂材料。
- 前記ゴム樹脂組成物100重量部に対して、前記シロキサンカップリング剤の含有量は、0.1重量部~5重量部である、請求項6に記載のゴム樹脂材料。
- 基材層と、前記基材層に設置した金属層とを備える、金属基板であって、前記基材層の材料は、請求項1に記載のゴム樹脂材料を含むことを特徴とする、金属基板。
- 熱伝導率は、1.2W/m・K以上である、請求項8に記載の金属基板。
- 比誘電率は、6~12である、請求項8に記載の金属基板。
- 前記金属基板の剥離強度は、0.51N・m~0.8N・mである、請求項8に記載の金属基板。
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| JP2018012772A (ja) | 2016-07-20 | 2018-01-25 | 日立化成株式会社 | 樹脂組成物、樹脂層付き支持体、プリプレグ、積層板、多層プリント配線板及びミリ波レーダー用プリント配線板 |
| JP2022011017A (ja) | 2020-06-29 | 2022-01-17 | Agc株式会社 | パウダー分散液及び積層体の製造方法 |
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| JP2018012772A (ja) | 2016-07-20 | 2018-01-25 | 日立化成株式会社 | 樹脂組成物、樹脂層付き支持体、プリプレグ、積層板、多層プリント配線板及びミリ波レーダー用プリント配線板 |
| JP2022508173A (ja) | 2019-07-22 | 2022-01-19 | 南亜新材料科技股▲ふん▼有限公司 | 高周波樹脂組成物およびその使用 |
| JP2022011017A (ja) | 2020-06-29 | 2022-01-17 | Agc株式会社 | パウダー分散液及び積層体の製造方法 |
| JP2022022090A (ja) | 2020-07-23 | 2022-02-03 | 南亞塑膠工業股▲分▼有限公司 | 高周波基板用樹脂組成物及び金属積層板 |
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