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US 11,993,688 B2Granted
Molded article of carbon fiber composite material and production method for molded article of carbon fiber composite material
AssigneeToray Industries, Inc.
InventorsHideto Mitsuoka, Yuji Ozeki
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Abstract
A molded article of a carbon fiber composite material includes at least carbon fibers and a resin composition. The molded article of a carbon fiber composite material is characterized in that the surface roughness Ra thereof is 0.01-2 μm and in that the tensile shear adhesive strength (F0) thereof when a metal has been adhered to the surface thereof via an adhesive layer that contains an epoxy compound and is 0.1-3 mm thick is 10-40 MPa.
Claims13
A molded article of a carbon fiber composite material including at least a carbon fiber and a resin composition, wherein
- the molded article has a surface roughness Ra of 0.01 μm or more and 2 μm or less, and
- a tensile lap-shear strength (F0) is 10 MPa or more and 40 MPa or less when the molded article is bonded with a metal with an adhesive layer formed on a surface of the molded article being interposed therebetween, the adhesive layer containing an epoxy compound and having a thickness of 0.1 mm or more and 3 mm or less on a surface thereof, and
- a ratio {γp/γd} between a surface free energy dispersion component (γd) and a surface free energy polar component (γp) constituting the surface free energy (γTOTAL) is 0 or more and 1 or less, and
- the molded article has a surface free energy (γTOTAL) of 49 mJ/m2 or more and 80 mJ/m2 or less, and
- a ratio {O/C} of the number of atoms of oxygen (O) with respect to the number of atoms of carbon (C) on the surface of the molded article of the carbon fiber composite material, measured by X-ray photoelectron spectroscopy, is 0.4 or more and 1.2 or less.
2 more elements
Dependencies are inferred from the claim text.