JP6512153B2 - 高圧タンクの製造方法 - Google Patents
高圧タンクの製造方法 Download PDFInfo
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Description
高圧タンクの製造方法であって、
ライナを準備する工程と、
前記ライナ上に熱硬化性の第1の樹脂と繊維とを含む補強層を形成する工程と、
前記補強層上に熱硬化性の第2の樹脂を含む保護層を形成する工程であって、
前記第2の樹脂のゲル化温度である第2のゲル化温度は、前記第1の樹脂のゲル化温度である第1のゲル化温度より高く、
前記第1のゲル化温度において、前記第2の樹脂の粘度は、前記第1の樹脂の粘度より低い、保護層の形成工程と、
前記補強層と前記保護層とを加熱して、前記補強層を、前記第1の樹脂がゲル化し前記第2の樹脂がゲル化しない温度とし、前記補強層を硬化させる工程であって、前記補強層内から前記補強層外に排出されたガスが、ゲル化していない前記保護層を透過して、保護層外に排出される、補強層の硬化工程と、を備える、高圧タンクの製造方法。
高圧タンクの製造方法であって、
高圧タンクを準備する工程であって、前記高圧タンクは、ライナと、前記ライナ上に熱硬化性の第1の樹脂と繊維とを含んで形成されている補強層と、前記補強層上に熱硬化性の第2の樹脂を含んで形成されている保護層と、を備える、高圧タンクの準備工程と、
前記高圧タンクの耐圧試験を行う工程と、を備え、
前記高圧タンクは、略円筒状を成す円筒部を備え、
前記第1の樹脂の破断ひずみは、前記耐圧試験における前記高圧タンクが備える円筒部の中心軸方向に発生する引張ひずみである基準ひずみより大きく、前記第2の樹脂の破断ひずみは、前記基準ひずみより小さく、
前記高圧タンクの耐圧試験を行う工程は、前記耐圧試験により、前記保護層に亀裂を生じさせる工程を含む、高圧タンクの製造方法。
A1.高圧タンクの構成:
図1は、本発明の一実施形態としての高圧タンクの概略構成を示す断面図である。本実施形態において、高圧タンク100は、例えば、圧縮水素が充填されるためのものである。高圧タンク100は、例えば、燃料電池に水素を供給するために、燃料電池車に搭載される。なお、高圧タンク100は、燃料電池車に限らず、電気自動車、ハイブリッド自動車等の他の車両に搭載されてもよいし、船舶、飛行機、ロボット等の他の移動体に搭載されてもよい。また、住宅、ビル等の定置設備に備えられてもよい。
補強層20は、熱硬化性の第1の樹脂と炭素繊維との複合材料である炭素繊維強化樹脂(CFRP:Carbon Fiber Reinforced Plastics)から成り、耐圧性を有する。本実施形態では、第1の樹脂として、アミン系または無水物系の硬化促進剤、及び、ゴム系の強化剤を有したエポキシ樹脂を用いている。第1の樹脂は、エポキシ樹脂に限定されず、不飽和ポリエステル樹脂等、他の熱硬化性樹脂を用いてもよい。第1の樹脂の性質(性能)については、後述する。
なお、この発明は上記の実施形態や実施形態に限られるものではなく、その要旨を逸脱しない範囲において種々の態様において実施することが可能であり、例えば次のような変形も可能である。
20,20p…補強層
25,25p…保護層
30,40…口金
100…高圧タンク
T1…第1のゲル化温度
T2…第2のゲル化温度
Claims (4)
- 高圧タンクの製造方法であって、
ライナを準備する工程と、
前記ライナ上に熱硬化性の第1の樹脂と繊維とを含む補強層を形成する工程と、
前記補強層上に熱硬化性の第2の樹脂を含む保護層を形成する工程であって、
前記第2の樹脂のゲル化温度である第2のゲル化温度は、前記第1の樹脂のゲル化温度である第1のゲル化温度より高く、
前記第1のゲル化温度において、前記第2の樹脂の粘度は、前記第1の樹脂の粘度より低い、保護層の形成工程と、
前記補強層と前記保護層とを加熱して、前記補強層を、前記第1の樹脂がゲル化し前記第2の樹脂がゲル化しない温度とし、前記補強層を硬化させる工程であって、前記補強層内から前記補強層外に排出されたガスが、ゲル化していない前記保護層を透過して、保護層外に排出される、補強層の硬化工程と、を備える、高圧タンクの製造方法。 - 請求項1記載の高圧タンクの製造方法であって、さらに、
前記補強層の硬化工程の後に、前記補強層と前記保護層が形成された前記ライナの耐圧試験を行う工程と、を備え、
前記補強層と前記保護層が形成された前記ライナは、略円筒状を成す円筒部を備え、
前記第1の樹脂の破断ひずみは、前記耐圧試験における前記円筒部の中心軸方向に発生する引張ひずみである基準ひずみより大きく、前記第2の樹脂の破断ひずみは、前記基準ひずみより小さく、
前記耐圧試験を行う工程は、前記耐圧試験により、前記保護層に亀裂を生じさせる工程を含む、高圧タンクの製造方法。 - 請求項1または2に記載の高圧タンクの製造方法において、
前記補強層の前記繊維は、炭素繊維である、高圧タンクの製造方法。 - 請求項3に記載の高圧タンクの製造方法において、
前記保護層は、ガラス繊維、またはアラミド繊維を含む、高圧タンクの製造方法。
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