JP6514335B2 - シリコーン樹脂組成物、並びにそれを用いたプリプレグ、積層板、銅張積層板、及びアルミ基板 - Google Patents
シリコーン樹脂組成物、並びにそれを用いたプリプレグ、積層板、銅張積層板、及びアルミ基板 Download PDFInfo
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Description
縮合型シリコーン樹脂100重量部と、
触媒0.0001〜2重量部と、
助剤0.001〜10重量部とを含むシリコーン樹脂組成物。
縮合型シリコーン樹脂100重量部と、
触媒0.0001〜2.0重量部と、
助剤0.001〜10重量部と、
フィラー0〜60重量部とを含む。
縮合型シリコーン樹脂100重量部と、
触媒0.0005〜1.5重量部と、
助剤0.005〜5重量部と、
フィラー0〜50重量部とを含む。
前記シリコーン樹脂組成物重量100部に、トルエン又はキシレン等の有機溶剤を加えて固形分50〜70%(重量比率)の樹脂接着液を調製し、強化材、例えばガラス繊維布に該樹脂接着液を浸漬させた後、120〜190℃で2〜15分間ベークして調製する方法である。
(1)本発明において、シリコーン樹脂、触媒、及び助剤を配合することにより得たシリコーン樹脂組成物は、高耐熱性(T300>60min)を有し、ハロゲンもリンも含まず、低熱膨張係数(熱膨張係数(CTE)は1.0%未満)及び高剥離強度の特徴を有する。
(2)本発明に係るシリコーン樹脂組成物は、ハロゲンもリンも含まず、低発煙性、低毒性、自己消火性及び環境保全等の利点を有し、積層板及び銅張積層板の難燃化分野に新しいアイデアと新方法を提供する。
(3)本発明の調製過程に用いるプロセス、及び装置は、一般的なFR−4汎用型であり、従来の生産装置を用いて本発明を実施でき、製品の産業化に役立つ。
(1)Z−膨張係数(CTE)のテスト(熱機械分析方法)
テスト方法:IPC−TM−650 2.4.24を使用する。テストデータは下表に示される。
(2)熱剥離時間(T300)(熱機械分析方法)
テスト方法:IPC−TM−650 2.4.24.1を使用する。テストデータは下表に示される。
(3)燃焼等級
テスト方法:米国UL94標準に準じる。テストデータは下表に示される。
(4)剥離強度テスト
テスト方法:IPC−TM−650 2.4.8方法を使用してテストする。テストデータは下表に示される。
上表のデータから明らかなように、実施例1〜4は非常に低い熱膨張係数と長い熱剥離時間を兼ね備え、ハロゲンもリンも含まないが難燃性を有し、且つ剥離強度が高く、銅張積層板に対する要求を満たしている。実施例2に比べ、比較例1では、シリコーン樹脂がメチルフェニルビニルシリコーン樹脂であるため、付加硬化法で硬化させた後、膨張係数が高く、剥離強度が低く、難燃効果も不十分である。実施例2に比べ、比較例2では、フィラー含有量が所定範囲を超えるため、銅箔との剥離強度を低下させ、熱剥離時間を減少させる。実施例3に比べ、比較例3では、助剤の使用量が保護範囲内ではなく、助剤の多くが小分子であるため、添加量が多すぎると、積層板が高温で小分子を過度に放出し、熱膨張係数を増大させると同時に、剥離時間を短縮させる。実施例3に比べ、比較例4では、R/Si値が所定範囲を超えており、R/Siが大きいほど、樹脂架橋密度が低下し、熱可塑性樹脂に類似するようになり、熱膨張係数を上昇させ、高温での安定性を低下させ、熱剥離時間を短縮させる。
Claims (11)
- シリコーン樹脂組成物であって、
縮合型シリコーン樹脂100重量部と、
触媒0.0001〜2重量部と、
助剤0.001〜10重量部と、
フィラー5〜60重量部と、
を含み、
前記縮合型シリコーン樹脂はR/Si=1.0〜1.7(モル比)、Ph/(Me+Ph)=0〜1.0(モル比)のメチルシリコーン樹脂、メチルフェニルシリコーン樹脂又はフェニルシリコーン樹脂のうちの任意の1種、又は少なくとも2種の混合物であり、ただし、Phはフェニル基、Meはメチル基、Rは有機官能基−CH 3 、−Ph、−OCH 3 、−OCH 2 CH 3 、−H又は−OHを示し、
前記助剤は、シランカップリング剤である
ことを特徴とするシリコーン樹脂組成物。 - 前記縮合型シリコーン樹脂は、R/Si=1.2〜1.7(モル比)、Ph/(Me+Ph)=0.2〜0.6(モル比)のメチルフェニルシリコーン樹脂であることを特徴とする請求項1に記載のシリコーン樹脂組成物。
- 前記触媒は、ナフテン酸亜鉛、ナフテン酸錫、ナフテン酸コバルト、ナフテン酸鉄、ナフテン酸セリウム、カルボン酸亜鉛、カルボン酸錫、カルボン酸コバルト、カルボン酸鉄、カルボン酸セリウム、パーフルオロスルホン酸、塩化ホスホニトリル、アミン類、第四級アンモニウム塩基、オクタン酸亜鉛、イソオクタン酸亜鉛、チタネート又はグアニジン化合物等のうちの任意の1種、又は少なくとも2種の組み合わせであることを特徴とする請求項1に記載のシリコーン樹脂組成物。
- 前記フィラーは、シリカ、アルミナ、水酸化アルミニウム、窒化ホウ素、窒化アルミニウム、硫酸バリウム、雲母粉、ホウ酸亜鉛、二酸化チタン、タルカムパウダ、窒化ケイ素又は炭化ケイ素のうちの任意の1種、又は少なくとも2種の混合物を含むことを特徴とする請求項1〜3のいずれか1項に記載のシリコーン樹脂組成物。
- 縮合型シリコーン樹脂100重量部と、
触媒0.0005〜1.5重量部と、
助剤0.005〜5重量部と、
フィラー5〜50重量部と
を含むことを特徴とする請求項1〜4のいずれか1項に記載のシリコーン樹脂組成物。 - 請求項1〜5のいずれか1項に記載のシリコーン樹脂組成物を溶剤に溶解、又は分散させて得ることを特徴とする樹脂接着液。
- 強化材及び含浸乾燥後に、強化材に付着させた請求項1〜5のいずれか1項に記載のシリコーン樹脂組成物を含むことを特徴とするプリプレグ。
- 請求項7に記載のプリプレグを少なくとも一枚含むことを特徴とする積層板。
- 少なくとも一枚の積層した請求項7に記載のプリプレグ、及び積層したプリプレグの片側又は両側にラミネートした銅箔を含むことを特徴とする銅張積層板。
- 銅箔層とアルミベース層を含み、銅箔層とアルミベース層との間に絶縁層が塗布されているアルミベース銅張積層板であって、
前記絶縁層は、請求項1〜5のいずれか1項に記載のシリコーン樹脂組成物に、熱伝導性フィラーを添加してなることを特徴とするアルミベース銅張積層板。 - 請求項10に記載のアルミベース銅張積層板の製造方法であって、
(1)成分比率でシリコーン樹脂組成物を調製し、熱伝導性フィラーを添加し、均一に撹拌し、熱伝導性樹脂接着液を得るステップと、
(2)製造した熱伝導性樹脂接着液を銅箔に塗布し、オーブンにおいて170℃で5minベークし、半硬化塗布銅箔を得るステップと、
(3)アルミ板と(2)に記載の塗布銅箔をラミネートして、真空状態下で段階的に昇温させ、プレスしてアルミベース銅張積層板を得るステップと
を含む、製造方法。
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