JP2021511204A - 多孔性フッ素系樹脂複合膜およびその製造方法 - Google Patents
多孔性フッ素系樹脂複合膜およびその製造方法 Download PDFInfo
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- JP2021511204A JP2021511204A JP2020539079A JP2020539079A JP2021511204A JP 2021511204 A JP2021511204 A JP 2021511204A JP 2020539079 A JP2020539079 A JP 2020539079A JP 2020539079 A JP2020539079 A JP 2020539079A JP 2021511204 A JP2021511204 A JP 2021511204A
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- porous
- composite film
- based resin
- carbon atoms
- fluorine
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Abstract
Description
本出願は、2018年7月12日付韓国特許出願第10−2018−0081250号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として組み含まれる。
本発明は、優れた撥水性および撥油性を有する多孔性フッ素系樹脂複合膜およびその製造方法に関する。
本明細書で、(共)重合体は、重合体および共重合体の両方を含む意味である。
Preform−押出(Extrusion)−カレンダーおよび乾燥工程(Calender & Drying)−MD延伸工程−熱固定過程を経て一軸延伸多孔性フッ素系樹脂層を製造した。
Daikin社のTG−5673固形分の含有量が5重量部になるように溶媒に溶解した。前記溶媒としては、イソプロピルアルコールおよび水を全体配合で9および76重量部の含有量で用いた。
下記表2に記載された組成のコーティング液を用いることを除いては、前記実施例1と同様な方法を行って多孔性フッ素系樹脂複合膜を製造した。
下記表2に記載された組成のコーティング液を用いることを除いては、前記実施例1と同様な方法を行って多孔性フッ素系樹脂複合膜を製造した。
フッ素系であるペルフルオロヘキサノイック酸の代わりに炭化水素系であるヘキサノイック酸(Hexanoic acid、HA)を用いて下記表2に記載された組成のコーティング液を用いることを除いては、前記実施例1と同様な方法を行って多孔性フッ素系樹脂複合膜を製造した。
前記実施例および比較例で製造された多孔性フッ素系樹脂複合膜に対して下記の特性を測定または評価し、その結果を下記表3に整理した。
AATCC−118の測定方法により直鎖炭化水素溶媒を利用して多孔性フッ素系樹脂複合膜の撥油度を測定した。
この時、前記多孔性フッ素系樹脂複合膜の一方の面を第1面、他方の面を第2面と表記した。
通気度は日本産業標準のガーリー(JIS Gurley)測定方法によりToyoseiki社のGurley type Densometer(No.158)を用いて測定した。
Claims (17)
- 内部に孔部が形成された多孔性フッ素系樹脂層;および
前記多孔性フッ素系樹脂層の少なくとも一面と前記孔部の外面に形成され、炭素数1から10のペルフルオロアルキルアクリレートに由来する繰り返し単位を含む(共)重合体を含むコーティング層;を含む、多孔性フッ素系樹脂複合膜。 - 前記(共)重合体は、炭素数1から10のペルフルオロアルキルアクリレート−炭素数1から10のアルキルアクリレート−塩化ビニル−架橋性単量体の(共)重合体を含む、請求項1に記載の多孔性フッ素系樹脂複合膜。
- 前記架橋性単量体は、ヒドロキシ基、カルボキシル基、エポキシ基、イソシアネート基またはウレタン、アミン、アミド、ユレアなどの窒素含有官能基を有する単量体である、請求項2に記載の多孔性フッ素系樹脂複合膜。
- 前記多孔性フッ素系樹脂層は、5から300μmの厚さを有する、請求項1から3のいずれか一項に記載の多孔性フッ素系樹脂複合膜。
- 前記多孔性フッ素系樹脂層は、150から6000nmの直径を有する前記孔部を含む、請求項1から4のいずれか一項に記載の多孔性フッ素系樹脂複合膜。
- 前記多孔性フッ素系樹脂層は、ポリテトラフルオロエチレン(PTFE)、テトラフルオロエチレン−ペルフルオロアルキルビニルエーテル共重合体(PFA)、テトラフロオロエチレン−ヘキサフロオロプロピレン共重合体(FEP)、エチレン−テトラフルオロエチレンコポリマー樹脂(ETFE)、テトラフルオロエチレン−クロロトリフルオロエチレン共重合体(TFE/CTFE)およびエチレン−クロロトリフルオロエチレン樹脂(ECTFE)からなる群より選択された1種以上のフッ素系化合物を含む、請求項1から5のいずれか一項に記載の多孔性フッ素系樹脂複合膜。
- 前記多孔性フッ素系樹脂複合膜の一方の面および他方の面の撥油度(AATCC−118)は、それぞれ6等級以上である、請求項1から6のいずれか一項に記載の多孔性フッ素系樹脂複合膜。
- 前記多孔性フッ素系樹脂複合膜の一方の面および他方の面の撥油度(AATCC−118)は、対称性を有する、請求項1から7のいずれか一項に記載の多孔性フッ素系樹脂複合膜。
- 炭素数1から10のペルフルオロアルキルアクリレートに由来する繰り返し単位を含む(共)重合体および炭素数3から10のペルフルオロアルカノイック酸を含むコーティング液を準備する段階;および
内部に孔部が形成された多孔性フッ素系樹脂層の少なくとも一面と前記孔部の外面とを前記コーティング液でコーティングする段階を含む、多孔性フッ素系樹脂複合膜の製造方法。 - 前記(共)重合体は、炭素数1から10のペルフルオロアルキルアクリレート−炭素数1から10のアルキルアクリレート−塩化ビニル−架橋性単量体の(共)重合体を含む、請求項9に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記架橋性単量体は、ヒドロキシ基、カルボキシル基、エポキシ基、イソシアネート基またはウレタン、アミン、アミド、ユレアなどの窒素含有官能基を有する単量体である、請求項10に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記コーティング液は、炭素数1から10のペルフルオロアルキルアクリレートに由来する繰り返し単位を含む(共)重合体を2から10重量%、および炭素数3から10のペルフルオロアルカノイック酸を5から15重量%含む、請求項9から11のいずれか一項に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記コーティング液は、アミン化合物またはアンモニアをさらに含む、請求項9から12のいずれか一項に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記アミン化合物またはアンモニアは、前記炭素数3から10のペルフルオロアルカノイック酸およびアミン化合物またはアンモニアの総重量に対して0.1から5重量%で前記コーティング液に含まれる、請求項13に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記コーティング液は、有機溶媒または水をさらに含む、請求項9から14のいずれか一項に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記内部に前記孔部が形成された多孔性フッ素系樹脂層の少なくとも一面と前記孔部の外面とを前記コーティング液でコーティングする段階は、1回の工程で行われる、請求項9から15のいずれか一項に記載の多孔性フッ素系樹脂複合膜の製造方法。
- 前記内部に前記孔部が形成された多孔性フッ素系樹脂層の少なくとも一面と前記孔部の外面とを前記コーティング液でコーティングする段階後、
前記炭素数3から10のペルフルオロアルカノイック酸を分解する段階をさらに含む、請求項9から16のいずれか一項に記載の多孔性フッ素系樹脂複合膜の製造方法。
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