JP7603262B2 - 樹脂組成物、樹脂フィルム、樹脂付き金属箔、プリプレグ、金属張積層板及びプリント配線板 - Google Patents
樹脂組成物、樹脂フィルム、樹脂付き金属箔、プリプレグ、金属張積層板及びプリント配線板 Download PDFInfo
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- JP7603262B2 JP7603262B2 JP2021553486A JP2021553486A JP7603262B2 JP 7603262 B2 JP7603262 B2 JP 7603262B2 JP 2021553486 A JP2021553486 A JP 2021553486A JP 2021553486 A JP2021553486 A JP 2021553486A JP 7603262 B2 JP7603262 B2 JP 7603262B2
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Description
下記の原料を用意した。
-エポキシ樹脂1:DIC株式会社製。ナフタレン型液状エポキシ樹脂。品名HP-4032D。比重1.20。室温で液状。
-エポキシ樹脂2:DIC株式会社製。ナフタレン型エポキシ樹脂。品名HP-4710。比重1.20。軟化点95℃。
-エポキシ樹脂3:ビスフェノールA型エポキシ樹脂。DIC株式会社製。品名エピクロン850-S。比重1.15。室温で液状。
-エポキシ樹脂4:3官能エポキシ 樹脂。プリンテック社製。品名VG-3101。比重1.18。軟化点61℃。
-フェノキシ樹脂:日鉄ケミカル&マテリアル社製。品名YP-50。
-ポリフェニレンエーテル樹脂:SABICジャパン社製。品名SA-90。
-フェノール樹脂1:リン含有フェノール樹脂。ダウケミカルカンパニー製。品名XZ92741。
-フェノール樹脂2:明和化成社製。品名MEH-7600-4H。
-硬化剤:ジシアンジアミド。
-触媒:2-エチル-4-メチルイミダゾール。
-難燃剤:大八化学工業株式会社製。リン酸エステル。品名PX-200。比重1.26。
-カップリング剤:信越化学工業株式会社製。シランカップリング剤。品名KBE-403。比重1.00。
-分散剤:ビックケミー・ジャパン株式会社製。湿潤分散剤。品名BYK-W903。比重1.00。
-レベリング剤:DIC株式会社製。品名F-556。比重1.00。
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-乾式シリカ5:エボニック社製。フュームドシリカ。品名Aerosil RX300。BET比表面積210m2/g。比重2.20。
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-乾式アルミナ:エボニック社製。フュームドアルミナ。品名Aeroxide AluC805。BET比表面積90m2/g。比重3.96。
-湿式シリカ1:日産化学社製。メチルエチルケトン分散シリカゾル。品名MEK-EC-2130Y。BET比表面積230m2/g。比重2.20。
-湿式シリカ2:日産化学社製。メチルエチルケトン分散シリカゾル。品名MEK-EC-2430Z。BET比表面積230m2/g。比重2.20。
上記の原料を、表1から表3に示す組成で混合してから、メチルエチルケトン及びジメチルホルムアミドを固形分濃度が80~95質量%となるように加え、プラネタリーミキサーで攪拌することによって、組成物を調製した。
組成物をポリエチレンテレフタレートフィルム上に塗布してから、約150℃で3~5分加熱することで樹脂組成物を半硬化させることで、厚み100μmの樹脂フィルムを製造した。
(1)フィルム性
樹脂フィルムを、直径10mmのSUS製の棒に巻き付けた場合と、直径100mmのSUS製の棒に巻き付けた場合との、樹脂フィルムの外観を確認した。
樹脂フィルムを平面視100mm×100mmの寸法にカットして試験用のサンプルを作製した。このサンプルを2枚重ねて重量を測定した。
樹脂流れ(%)=(M0-2M)/M0×100
熱プレスを、130℃、5分、2.0MPaの条件(条件2)で行った場合についても、同様に樹脂流れを算出した。
両面銅張積層板(パナソニック株式会社製、品番R-1566、銅箔35μm)を用意した。この両面銅張積層板の銅箔にエッチング処理を施して格子状の導体配線を作製し、試験用のプリント配線板を得た。プリント配線板における二つの導体配線の各々に樹脂フィルムを1枚重ねて、200℃、2.94MPa(30kgf/cm2)、60分間の条件で熱プレスすることで、積層体を作製した。導体配線の残銅率が20%、50%及び80%の場合の各々について同じ試験を行った。
8枚の厚み100μmの樹脂フィルムを積層し、これらを2枚の銅箔(厚さ35μm)の粗化面の間に挟んで195℃、2.94MPa(30kgf/cm2)で60分間熱プレスすることで、絶縁層全体の厚さが800μmの銅張積層板(CCL)を製造した。
以上の試験結果を表1から表4に示す。
2 樹脂付き金属箔
20 樹脂層
21 金属箔
3 プリプレグ
31 基材
4 金属張積層板
40 絶縁層
41 金属箔
5 プリント配線板
50 絶縁層
51 導体層
Claims (12)
- 熱硬化性樹脂(A)と、無機フィラー(B)とを含有する樹脂組成物であり、
前記無機フィラー(B)は、第一のフィラー(B1)と、前記第一のフィラー(B1)よりも粒径が小さいナノサイズの第二のフィラー(B2)とを含有し、
前記第一のフィラー(B1)の粒径はレーザー回折・散乱法によるメジアン径であり、前記第二のフィラー(B2)の粒径は前記第二のフィラー(B2)のBET比表面積から算出される値であり、
前記第一のフィラー(B1)は、無水炭酸マグネシウムフィラー(b1)及びアルミナフィラー(b2)を含有し、
前記樹脂組成物中の固形分全量に対する、前記第一のフィラー(B1)の割合は50体積%以上90体積%以下、かつ前記第二のフィラー(B2)の割合は0.1体積%以上2.0体積%以下であり、
前記アルミナフィラー(b2)の割合は、前記無機フィラー(B)に対して、25体積%以上75体積%以下である、
樹脂組成物。 - 前記無機フィラー(B)を除く固形分に対する前記第二のフィラー(B2)の割合は1.0体積%以上8.0体積%以下である、
請求項1に記載の樹脂組成物。 - 前記無水炭酸マグネシウムフィラー(b1)の割合は、前記無機フィラー(B)に対して、25体積%以上75体積%以下である、
請求項1又は2に記載の樹脂組成物。 - 前記無水炭酸マグネシウムフィラー(b1)の、レーザー回折・散乱法によるメジアン径は、8μm以上30μm以下であり、
前記アルミナフィラー(b2)の、レーザー回折・散乱法によるメジアン径は、0.1μm以上5μm以下である、
請求項1から3のいずれか一項に記載の樹脂組成物。 - 前記第二のフィラー(B2)の、BET法による比表面積は、100m2/g以上400m2/g以下である、
請求項1から4のいずれか一項に記載の樹脂組成物。 - 前記第二のフィラー(B2)は、アルキルシラン、シリコーンオイル、エポキシシラン、アミノシラン、イソシアネートシラン及び酸無水物シランよりなる群から選択される少なくとも一種の表面処理剤で処理されている、
請求項1から5のいずれか一項に記載の樹脂組成物。 - 前記熱硬化性樹脂(A)はエポキシ樹脂(a)を含有し、
前記エポキシ樹脂(a)は、軟化点が75℃以下であるエポキシ樹脂(a1)を、前記エポキシ樹脂(a)に対して30質量%以上の割合で含有する、
請求項1から6のいずれか一項に記載の樹脂組成物。 - 請求項1から7のいずれか一項に記載の前記樹脂組成物、前記樹脂組成物の乾燥物、又は前記樹脂組成物の半硬化物を含有する、
樹脂フィルム。 - 請求項1から7のいずれか一項に記載の前記樹脂組成物、前記樹脂組成物の乾燥物、又は前記樹脂組成物の半硬化物を含有する樹脂層と、
前記樹脂層に重なる金属箔とを備える、
樹脂付き金属箔。 - 基材と、
前記基材に含浸している、請求項1から7のいずれか一項に記載の前記樹脂組成物、前記樹脂組成物の乾燥物、又は前記樹脂組成物の半硬化物とを備える、
プリプレグ。 - 請求項1から7のいずれか一項に記載の前記樹脂組成物の硬化物を含有する絶縁層と、
前記絶縁層に重なる金属箔とを備える、
金属張積層板。 - 請求項1から7のいずれか一項に記載の前記樹脂組成物の硬化物を含有する絶縁層と、
前記絶縁層に重なる導体層とを備える、
プリント配線板。
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