Precoated aluminum material and aluminum composite material
AssigneeUacj Corporation
InventorOsamu Kato
Life of this patent
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Abstract
A precoated aluminum material to which various resin members can be bonded and an aluminum composite material that is prepared using this precoated aluminum material are provided. A precoated aluminum material (1) comprises: a substrate (2) composed of an aluminum material; and a primer coating (3) formed on the substrate (2). The primer coating (3) contains urethane resin. In the infrared-absorption spectrum of the primer coating (3), the value of the optical absorption AC═O at the peak top of the maximum peak among peaks present in the wavenumber range of 1,180-1,330 cm−1 is 0.8-1.5 times that of the optical absorption Aurethane at the peak top of the maximum peak among peaks present in the wavenumber range of 1,670-1,770 cm−1.
Claims15
A precoated aluminum material, to which a resin member is bondable, comprising:
- a substrate composed of an aluminum material;
- and
- a primer coating formed on the substrate;
- wherein:
- the primer coating:
- contains 3-50 parts by mass of an acrylic resin to 100 parts by mass of a urethane resin and 0.3-13 parts by mass of a melamine resin to 100 parts by mass of the urethane resin;
- and
- has an infrared-absorption spectrum in which the value of the optical absorption AC═O at the peak top of the maximum peak among peaks present in the wavenumber range of 1,180-1,330 cm−1 is 0.8-1.5 times that of the optical absorption Aurethane at the peak top of the maximum peak among peaks present in the wavenumber range of 1,670-1,770 cm−1.
A composition of matter, comprising:
- a substrate composed of aluminum or an aluminum alloy;
- and
- an adhesive primer coating bonded to the substrate and comprising 3-50 parts by mass of an acrylic resin per 100 parts by mass of a polyurethane and 0.3-13 parts by mass of a melamine resin per 100 parts by mass of the polyurethane;
- wherein an infrared-absorption spectrum of the adhesive primer coating exhibits:
- a maximal value of optical absorption AC═O in the wavenumber range of 1,180-1,330 cm−1,
- a maximal value of optical absorption Aurethane in the wavenumber range of 1,670-1,770 cm−1, and
- the maximal value of optical absorption AC═O is 0.8-1.5 times the maximal value of optical absorption Aurethane.
Dependencies are inferred from the claim text.