PRECOATED ALUMINUM MATERIAL AND ON-VEHICLE COMPONENT USING THE SAME

To provide a precoated aluminum material used for an on-board component housing such as a power control unit (PCU) cover.SOLUTION: The precoated aluminum material is provided that comprises: an aluminum base material; a chemical film formed on the surface of the aluminum base material; and a resin f...

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Bibliographische Detailangaben
Hauptverfasser: MAEZONO TOSHIKI, OZAWA TAKEHIRO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a precoated aluminum material used for an on-board component housing such as a power control unit (PCU) cover.SOLUTION: The precoated aluminum material is provided that comprises: an aluminum base material; a chemical film formed on the surface of the aluminum base material; and a resin film formed on the chemical film, wherein the resin film includes a polyester resin as a base resin and a heat dissipating pigment, and an SP value δ () of the polyester resin, a film thickness t (μm) of the resin film and a pts.mass m(-) of the heat dissipating pigment with respect to 100 pts.mass of the polyester resin satisfy the following expression (1): 6≤{(23.4-sp)×(t)}/(m)≤127 (1).SELECTED DRAWING: None 【課題】パワーコントロールユニット(PCU)カバー等の車載部品に用いるプレコートアルミニウム材を提供する。【解決手段】アルミニウム基材と、当該アルミニウム基材表面に形成された化成皮膜と、当該化成皮膜上に形成された樹脂皮膜とを備えるプレコートアルミニウム材であって、前記樹脂皮膜がベース樹脂であるポリエステル樹脂と、放熱性顔料とを含み、ポリエステル樹脂のSP値δ(<cal/cm3>1/2)と、樹脂皮膜の膜厚t(μm)と、ポリエステル樹脂100質量部に対する放熱性顔料の質量部m(−)が下記式(1)を満たすことを特徴とするプレコートアルミニウム材、ならびに、これを用いた車載部品。6≦{(23.4−sp)×(t)}/(m)≦127 (1)【選択図】なし