JP6417040B2 - 磁気誘電体基材、回路材料、及びそれらを有するアセンブリ - Google Patents
磁気誘電体基材、回路材料、及びそれらを有するアセンブリ Download PDFInfo
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- JP6417040B2 JP6417040B2 JP2017519878A JP2017519878A JP6417040B2 JP 6417040 B2 JP6417040 B2 JP 6417040B2 JP 2017519878 A JP2017519878 A JP 2017519878A JP 2017519878 A JP2017519878 A JP 2017519878A JP 6417040 B2 JP6417040 B2 JP 6417040B2
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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Description
実施形態において、回路材料を製造する方法が、複数のヘキサフェライト粒子を硬化性ポリマー母材組成物中に分散させる工程と、硬化性ポリマー母材組成物及び分散粒子から層を形成する工程と、形成された層を導電層上に配置する工程と、ポリマー母材組成物を硬化する工程とを含む。
別の実施形態において、高周波部品が磁気誘電体基材を含む。
上記の特徴及び利点ならびにその他の特徴及び利点は、添付した図面と併せるとき以下の詳細な説明から容易に明らかとなる。
C1〜4アルキルアクリレート);アリル化ポリ(アリーレンエーテル);又は前述のポリマーのうちの少なくとも1つを含む組合せを含むことができる。使用できる他の熱硬化性ポリマーには、熱硬化性であるように改質されたポリマーが含まれ、例えば液晶ポリマーは一般的に熱可塑性ポリマーであるが、それらはまた、官能化によって又はエポキシなどの熱硬化性樹脂を配合することによって熱硬化性樹脂として使用することができる。エポキシは、脂環型エポキシ、ビスフェノールAのジグリシジルエーテル、クレゾールノボラック、フェノールエポキシ、ビスマレイミド−トリアジンエポキシ、シアネートエステル−エポキシ混合物、又は前述したもののうちの少なくとも1つを含む組合せを含むことができる。
物に対して100重量%まで、具体的には、75重量%まで、より具体的には、全ポリマー母材組成物に基づいて10〜70重量%、さらにより具体的には、20〜60又は70重量%の量において存在し得る。
ー及びスチレンとブタジエンとを含有するトリブロック及びジブロック混合コポリマー、例えば、クレイトン・ポリマーズ(Kraton Polymers)(テキサス州、ヒューストン(Houston,TX))から商品名クレイトン(KRATON)D1118として入手可能なものが含まれる。クレイトン(KRATON)D1118は、33重量%のスチレンを含有するコポリマーを含有するジブロック/トリブロック混合スチレン及びブタジエンである。
Mnのうちの少なくとも1つ、具体的には、Co、Ni、及びMnを含む)を含むことができる。磁性粒子は、式MxFeyOzの金属酸化鉄、例えば、MFe12O19、Fe3O4、MFe24O41、又はMFe2O4(式中、MがSr、Ba、Co、Ni、Zn、V、及びMnであり、具体的には、Co、Ni、及びMnである)又は前述したもののうちの少なくとも1つを含む組合せを含むことができる。磁性粒子は、強磁性炭化コバルト粒子(Co2C及びCo3C相など)、例えば、バリウムコバルトZ型ヘキサフェライト(Co2Zフェライト)を含むことができる。
。磁性ミクロ粒子の、質量によるD50値は1〜10マイクロメートル、具体的には、2〜5マイクロメートルであり得る。
ンテトラヒドロフタル酸(ヘット酸)、テトラブロモフタル酸、及びジブロモネオペンチルグリコールが含まれる。難燃剤(例えば臭素含有難燃剤など)が、樹脂の全重量に基づいて20phr(樹脂100部当たりの部)〜60phr、具体的には、30〜45phrの量において存在し得る。臭素化難燃剤の例には、セイテックス(Saytex)BT93W(エチレンビステトラブロモフタルイミド)、セイテックス(Saytex)120(テトラデカブロモジフェノキシベンゼン)、及びセイテックス(Saytex)102(デカブロモジフェニルオキシド)が含まれる。難燃剤を相乗剤と組合せて使用することができ、例えば、ハロゲン化難燃剤を例えば三酸化アンチモンなどの相乗剤と組合せて使用することができ、リン含有難燃剤をメラミンなどの窒素含有化合物と組合せて使用することができる。
他の材料、例えば、高温熱可塑性樹脂又は鉄粒子を含有する材料と異なり、磁気誘電体基材は、積層、エッチング、はんだ付け、孔開け等、回路の製造において使用されるプロセスに容易に耐えることができる。
典型的な磁気誘電体基材が図1に示される。磁気誘電体基材100は、上に記載されたようにポリマー母材、磁性粒子、及び任意選択の強化層300を含む。強化層300は織層、不織層であり得るか、又は使用されない。磁気誘電体基材100は、第1の平面表面12及び第2の平面表面14を有する。強化層300及び/又は磁性層が存在しているとき、磁気誘電体基材100は、強化層の面上に配置された第1の誘電体層部分16と、強化層及び/又は磁性層の第2の面上に配置された第2の誘電体層部分18とを有することができる。
細書中で使用される様々な材料及び物品を当技術分野に一般的に公知の方法によって形成することができる。例えば、磁気誘電体基材を強化層上に直接にキャストすることができるか、又は強化層を誘電体ポリマー母材組成物、誘電体フィラー、磁性粒子、及び任意選択の添加剤を含む溶液又は混合物でコートすることができ、例えば、浸漬コート、噴霧コート、リバースロールコート、ナイフ・オーバー・ロール、ナイフ・オーバー・プレート、メータリングロッドでコート、フローコート等を行なうことができる。代わりに、積層プロセスにおいて、強化層を第1及び第2の磁気誘電体層の間に置き、熱圧下で積層した。強化層が繊維状である場合、磁気誘電体基材が繊維状磁性強化層に流入して含浸する。接着剤層を繊維状磁性強化層と磁気誘電体基材との間に置くことができる。
接接触することもあり、そこで任意選択の中間層は、磁気誘電体基材全体の全厚さの10%以下の厚さであり得る。次に、層を接着して積層体を形成するために適した圧力及び温度及び時間の間層状構造物をプレス内に、例えば、真空プレス内に置くことができる。積層及び硬化は、例えば、真空プレスを使用して、一段階法によるか、又は多段階法によって行なわれることもあり得る。一段階法において、層状構造物をプレス内に置き、積層圧力(例えば、150〜400ポンド/平方インチ(psi)(1〜2.8MPa)に上げ、積層温度(例えば、260〜390摂氏度(℃))に加熱することができる。積層温度及び圧力を所望の浸漬時間、すなわち、20分間維持し、その後に(まだ加圧下にある間)150℃以下に冷却することができる。
シ官能化ポリブタジエン又はポリイソプレンポリマーは、ポリブタジエン又はポリイソプレンポリマーと環状無水物との反応生成物であり得る。カルボキシ官能化ポリブタジエン又はポリイソプレンポリマーは、マレイン化ポリブタジエン−スチレン又はマレイン化ポリイソプレン−スチレンコポリマーであり得る。特定の材料及び回路材料の形態が許容する場合、例えば、電着、化学蒸着、積層等、当技術分野に公知の他の方法を使用して導電層を適用することができる。
磁性粒子と熱可塑性ポリマーとを含む磁気誘電体基材を以下に記載される周波数の範囲について試験した。
図5は、実施例1〜6の全てが、1.5超、具体的には4超の誘電率(e’)を有することを示す。図5はさらに、実施例2、3、5、及び6が0〜500MHzの周波数において4〜8の誘電率を有することを示す。実施例2、3、5、及び6は望ましくは、100〜500MHzの周波数範囲について磁気定数の値の3倍以内である誘電率(具体的には、e’/u’≦2.2)を有するのに対して、実施例1及び4は、100〜500MHzの周波数範囲について磁気定数の値の3倍を超える誘電率を有する。
磁気損失値(u’tan delta、「u’tand」)対周波数を図8に示す。0〜500MHzで最も良い磁気損失値が実施例1、3、5、及び6について観察される(実施例1、3、5、及び6のデータポイントは一般的に、0〜500MHzでグラフ上で一致している)。これらの実施例の各々が、0〜500MHzで0.1より小さい磁気損失を有する。
実施形態1:熱硬化性ポリマー母材と、0〜500MHzで2.5以上、又は0〜500MHzで3〜8の磁気定数、0〜500MHzで0.1以下、又は0〜500MHzについて0.001〜0.05の磁気損失、及び0〜500MHzで1.5〜8又は2.5〜8の誘電率を有する磁気誘電体基材を提供するために有効な量及びタイプの、ポリマー母材中に分散される複数のヘキサフェライト粒子とを含む、磁気誘電体基材。
たUL94 V1等級、及びIPC試験方法650,2.4.9によって測定された3〜7pliの銅に対する剥離強度のうちの少なくとも1つをさらに有する。
実施形態8:実施形態1〜7のいずれかの磁気誘電体基材において、複数のヘキサフェライト粒子が、有機ポリマーコーティング、界面活性剤コーティング、シランコーティング、又は前述したもののうちの少なくとも1つ、具体的には、シランコーティングを含む組合せを含む。具体的には、シランコーティングが、フェニルシラン、トリクロロ(フェニル)シラン、トリス(トリメチルシロキシ)フェニルシラン、ビニルトリメトキシシラン、ビニルトリエトキシシラン、ビニルトリス(ベータメトキシエトキシ)シラン、ビニルベンジルアミノエチルアミノプロピルトリメトキシシラン、γ−グリシドキシプロピルトリメトキシシラン、γ−グリシドキシプロピルトリエトキシシラン、γ−メタクリルオキシプロピルトリメトキシシラン、γ−メタクリルオキシプロピルトリエトキシシラン、γ−アミノプロピルトリメトキシシラン、γ−アミノプロピルトリエトキシシラン、N−β(アミノエチル)γ−アミノプロピルトリメトキシシラン、N−β(アミノエチル)γ−アミノプロピルトリエトキシシラン、N−フェニル−γ−アミノプロピルトリメトキシシラン、N−フェニル−γ−アミノプロピルトリエトキシシラン、γ−メルカプトプロピルトリメトキシシラン、γ−メルカプトプロピルトリエトキシシラン、3−(トリエトキシシリル)プロピルスクシニル無水物、3−クロロプロピル−メトキシシラン、ビニル−トリクロロシラン、又は前述したもののうちの少なくとも1つを含む組合せを含むことができる。具体的には、シランが、フェニルシラン又は置換フェニルシラン、具体的には、フェニルシランを含むことができる。
ずれかの磁気誘電体基材。
実施形態10:実施形態9の磁気誘電体基材において、繊維が、ガラス繊維、フェライト繊維、フェライト合金繊維、コバルト繊維、コバルト合金繊維、鉄繊維、鉄合金繊維、ニッケル繊維、ニッケル合金繊維の他、粒状フェライト、粒状フェライト合金、粒状コバルト、粒状コバルト合金、粒状鉄、粒状鉄合金、粒状ニッケル、粒状ニッケル合金を含むポリマー繊維、又は前述したもののうちの少なくとも1つを含む組合せを含む。
実施形態12:実施形態1〜11の何れかの磁気誘電体基材を製造する方法が、複数のヘキサフェライト粒子を硬化性ポリマー母材組成物中に分散させる工程と、硬化性ポリマー母材組成物及び分散粒子から層を形成する工程と、ポリマー母材組成物を硬化させて磁気誘電体基材を形成する工程とを含む。
実施形態15:導電層が銅である、実施形態14の回路材料。
実施形態18:実施形態16又は17の方法において、形成が、繊維強化層に硬化性ポリマー母材組成物及び分散粒子を含浸させる工程と、層のポリマー母材組成物を部分的に硬化させてプリプレグを提供してからプリプレグを導電層上に配置する工程とを含む。
実施形態20:導電層をパターン化する工程をさらに含む、実施形態19の回路を製造する方法。
実施形態22:実施形態1〜11のうちの任意の1つ又は複数の磁気誘電体基材を含む高周波部品。
で用いられるとき、用語「実質的に等しい」は、比較の2つの値が互いにプラス又はマイナス10%、具体的には、互いにプラス又はマイナス5%、より具体的には、互いにプラス又はマイナス1%であることを意味する。
Claims (10)
- ポリブタジエン、ポリイソプレン、ポリイミド、又は前述したもののうちの少なくとも1つを含む組合せを含んでなる熱硬化性ポリマー母材と、
前記ポリマー母材中に分散される複数のヘキサフェライト粒子であって、
0〜500MHzで2.5以上、又は0〜500MHzで3〜8の磁気定数、
0〜500MHzで0.1以下、又は0〜500MHzについて0.001〜0.05の磁気損失、
0〜500MHzで1.5〜8又は2.5〜8の誘電率、
誘電率を磁気定数で割った値が1〜2、及び
IPC試験方法650,2.4.9によって測定された3〜7pliの銅に対する剥離強度
を有する磁気誘電体基材を与えるために有効な量及び種類の、ヘキサフェライト粒子とを含む、磁気誘電体基材。 - 0〜500MHzについて0.01未満又は0.005未満の誘電損失、
1.6mmの厚さで測定されたUL94 V1等級、及び
2.5〜3.1の磁気定数のうちの少なくとも1つをさらに有する、請求項1に記載の磁気誘電体基材。 - 前記複数のヘキサフェライト粒子が、磁気誘電体基材の全体積に基づいて5〜60体積%、又は10〜50体積%、又は15〜45体積%の量において磁気誘電体基材中に存在している、請求項1又は2に記載の磁気誘電体基材。
- 前記ポリマー母材が1,2−ポリブタジエン、ポリイソプレン、ポリブタジエン−ポリイソプレンコポリマー、ポリエーテルイミド、ポリイミド、ポリアミドイミド、又は前述したもののうちの少なくとも1つを含む組合せを含んでなる、請求項1〜3のいずれか一項に記載の磁気誘電体基材。
- 前記複数のヘキサフェライト粒子がSr、Ba、Co、Ni、Zn、V、Mn、又は前述したもののうちの1つ又は複数を含む組合せを含んでなる、請求項1〜4のいずれか一項に記載の磁気誘電体基材。
- 前記複数のヘキサフェライト粒子がシランコーティングを含んでなること、及び、織繊維又は不織繊維を含んでなる繊維強化層をさらに含んでなることのうちの少なくとも一方を要件とする、請求項1〜5のいずれか一項に記載の磁気誘電体基材。
- 前記複数のヘキサフェライト粒子を硬化性ポリマー母材組成物中に分散させて分散された組成物を形成する工程と、
前記分散された組成物から層を形成する工程と、
前記硬化性ポリマー母材組成物を硬化させて磁気誘電体基材を形成する工程とを備える、請求項1〜6のいずれか一項に記載の磁気誘電体基材を製造する方法。 - 請求項1〜6のいずれか一項に記載の磁気誘電体基材であって、
該磁気誘電体基材上に設けられた導電層をさらに備える、磁気誘電体基材。 - 前記複数のヘキサフェライト粒子を硬化性ポリマー母材組成物中に分散させて分散された組成物を形成する工程と、
前記分散された組成物から層を形成する工程と、
前記層を前記導電層上に配置する工程と、
前記硬化性ポリマー母材組成物を硬化させる工程とを備える、請求項8に記載の磁気誘電体基材の製造方法。 - 請求項1に記載の磁気誘電体基材を備える物品。
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