Abstract:
Provided are the following: a sandwich structure formed from a core component comprising a discontinuous reinforcing fiber, a thermoplastic resin and voids, and a skin component comprising a continuous reinforcing fiber and a matrix resin, wherein in the core component, 30% or more of the discontinuous reinforcing fiber is covered with the thermoplastic resin and monofilaments of the discontinuous reinforcing fiber intersect one another via the thermoplastic resin; an integrally formed article using the sandwich structure; and methods for the production therefor.
Abstract:
A fiber reinforced thermoplastic resin molded article includes (A) carbon fibers, (B) graphite and (C) a thermoplastic resin, wherein the carbon fibers (A), the graphite (B) and the thermoplastic resin (C) are contained in amounts of 1 to 30 parts by weight, 1 to 40 parts by weight and 30 to 98 parts by weight, respectively, relative to 100 parts by weight, of the carbon fibers (A), the graphite (B) and the thermoplastic resin (C), the weight average fiber length of the carbon fibers (A) is 0.3 to 3 mm and the specific gravity of the molded article is 1.1 to 1.9 g/cm3. The fiber reinforced thermoplastic resin molded article has excellent bending strength and heat conductivity.
Abstract:
A carbon fiber-reinforced resin composition of the present invention includes: sizing agent-coated carbon fibers in which carbon fibers are coated with a sizing agent; and a matrix resin. The sizing agent includes at least an aliphatic epoxy compound (A) and an aromatic epoxy compound (B1) as an aromatic compound (B). The sizing agent-coated carbon fibers have a ratio (a)/(b) of 0.50 to 0.90 where (a) is the height (cps) of a component having a binding energy (284.6 eV) attributed to CHx, C—C, and C═C and (b) is the height (cps) of a component having binding energy (286.1 eV) attributed to C—O in a C1s core spectrum of the surface of the sizing agent measured by X-ray photoelectron spectroscopy at a photoelectron takeoff angle of 15°.
Abstract translation:本发明的碳纤维增强树脂组合物包括:施胶剂涂布的碳纤维,其中碳纤维用施胶剂涂布; 和基质树脂。 上浆剂至少含有作为芳香族化合物(B)的脂肪族环氧化合物(A)和芳香族环氧化合物(B1)。 施胶剂涂覆的碳纤维的比率(a)/(b)为0.50至0.90,其中(a)是具有归因于CHx,C-C的结合能(284.6eV)的组分的高度(cps) C = C和(b)是通过X射线光电子能谱法测定的施胶剂表面的C1s芯光谱中归属于C-O的具有结合能(58.1eV)的成分的高度(cps) 光电子起飞角为15°。