ALUMINUM FIN MATERIAL

To provide an aluminum fin material in which hydrophilicity reduction caused by heating is suppressed and which is improved in heat resistance.SOLUTION: An aluminum fin material 10 comprises an aluminum plate 1 and a film layer 2. The film layer 2 includes a hydrophilic film layer 2b and a lubricant...

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Hauptverfasser: TSUNODA RYOSUKE, TATEYAMA KEITA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an aluminum fin material in which hydrophilicity reduction caused by heating is suppressed and which is improved in heat resistance.SOLUTION: An aluminum fin material 10 comprises an aluminum plate 1 and a film layer 2. The film layer 2 includes a hydrophilic film layer 2b and a lubricant film layer 2c successively from the side of the aluminum plate 1. The lubricant film layer 2c includes a resin matrix containing polyethylene glycol as a main component and a hydrophilic component containing at least one of a sulfonic acid group and an ester group and in the hydrophilic component, a change of a functional group amount to contribute to hydrophilicity before and after heating under conditions of 200°C and 10 minutes is 15% or less. The film layer 2 may also further include a corrosion resistant film layer 2a.SELECTED DRAWING: Figure 1 【課題】加熱による親水性低下が抑制された、耐熱性に優れたアルミニウム製フィン材を提供する。【解決手段】アルミニウム製フィン材10は、アルミニウム板1と、皮膜層2とを有し、皮膜層2は、アルミニウム板1側から順に、親水性皮膜層2bと、潤滑性皮膜層2cと、を備え、潤滑性皮膜層2cは、ポリエチレングリコールを主成分として含む樹脂マトリクスと、スルホン酸基及びエステル基の少なくとも一方を含む親水性成分と、を含み、親水性成分は、200℃10分の条件で加熱する前後における親水性に寄与する官能基量の変化が15%以下である。なお、皮膜層2はさらに耐食性皮膜層2aを備えていてもよい。【選択図】図1