JP6821907B2 - 液晶重合物薄膜及びそれを有するフレキシブル銅箔基板の製造方法 - Google Patents
液晶重合物薄膜及びそれを有するフレキシブル銅箔基板の製造方法 Download PDFInfo
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- JP6821907B2 JP6821907B2 JP2018186407A JP2018186407A JP6821907B2 JP 6821907 B2 JP6821907 B2 JP 6821907B2 JP 2018186407 A JP2018186407 A JP 2018186407A JP 2018186407 A JP2018186407 A JP 2018186407A JP 6821907 B2 JP6821907 B2 JP 6821907B2
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- liquid crystal
- crystal polymer
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- thin film
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Description
1.第1型液晶重合物樹脂は、高耐熱型のものであり、液晶状態転移(LC Transition)温度が約330℃よりも大きい。第1型の液晶重合物樹脂は、高い引張強度及び弾性係数を有し、耐薬品性が良く、高温性能を要求する場合に好適に使用されるが、加工性が悪い。
2.第2型液晶重合物樹脂は、中耐熱型のものであり、液晶状態転移温度が約280℃〜約320℃にある。第2型の液晶重合物樹脂は、耐薬品性及び加水分解安定性を有し、その電気特性及び難燃性も優れ、強い浸透防止性を有し、総合性能が良い。
3.第3型液晶重合物樹脂は、低耐熱型のものであり、液晶状態転移温度が約240℃よりも小さい。第3型の液晶重合物樹脂は、耐熱性能が悪いが、加工性が良く、値段が低い。
注意すべきなのは、液晶状態転移(LC Transition)温度とは、サーモトロピック液晶重合物樹脂が加熱される状態で固体から液晶状態に変わるある特定な温度である。理解すべきなのは、異なるタイプのサーモトロピック液晶重合物樹脂は、その単体の構造によって異なる液晶状態転移温度を有する。
1.第1型液晶重合物樹脂は、高耐熱型のものであり、液晶状態転移(LC Transition)温度が約330℃よりも大きい。第1型の液晶重合物樹脂は、高い引張強度及び弾性係数を有し、耐薬品性が良く、高温性能を要求する場合に好適に使用されるが、加工性が悪い。
2.第2型液晶重合物樹脂は、中耐熱型のものであり、液晶状態転移温度が約280℃〜約320℃にある。第2型の液晶重合物樹脂は、耐薬品性及び加水分解安定性を有し、その電気特性及び難燃性も優れ、強い浸透防止性を有し、総合性能が良好である。
3.第3型液晶重合物樹脂は、低耐熱型のものであり、液晶状態転移温度が約240℃よりも小さい。第3型の液晶重合物樹脂は、耐熱性能が悪いが、加工性が良く、値段が低い。
注意すべきなのは、液晶状態転移(LC Transition)温度とは、液晶重合物樹脂が加熱される状態で固体から液晶状態に変わるある特定な温度である。理解すべきなのは、異なるタイプの液晶重合物樹脂(サーモトロピック液晶重合物樹脂)は、その単体の構造によって異なる液晶状態転移温度を有する。上記3つのタイプの液晶重合物樹脂の実施例については、以上で詳しく説明したので、ここで繰り返して説明しない。
S11〜S15、S21〜S25:操作(工程)
Claims (3)
- 液晶重合物粉体を提供する工程と、
前記液晶重合物粉体を溶剤に均一に分散して、混合物溶液を形成する工程と、
前記混合物溶液を第1銅箔に塗布して、コーティング層を形成する工程と、
第1温度まで加熱して、前記コーティング層における前記溶剤を蒸発乾固する工程と、
前記溶剤を蒸発乾固した後、第2温度まで加熱して、前記第1銅箔上において前記液晶重合物粉体を液晶重合物薄膜に変換する工程と、
を備える液晶重合物薄膜を有するフレキシブル銅箔基板の製造方法であって、
前記液晶重合物粉体は、溶剤に溶解しないものであり、
前記第2温度は、前記第1温度及び前記液晶重合物粉体の液晶状態転移(LC Transition)温度よりも高く、かつ前記液晶重合物粉体の液晶状態転移温度と融点(Tm)の間にあり、
さらに、前記液晶重合物粉体のガラス転移温度(Tg)と融点(Tm)との間にある第3温度まで加熱して、前記液晶重合物薄膜が前記第1銅箔と第2銅箔との間に挟まれるように、第2銅箔を前記液晶重合物薄膜に接合する、液晶重合物薄膜を有するフレキシブル銅箔基板の製造方法。 - 前記液晶重合物粉体の平均粒子径は、1nm〜1000μmである請求項1いずれかに記載の製造方法。
- 前記液晶重合物薄膜の厚さは、1μm〜2000μmである請求項1または2に記載の製造方法。
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