LAMINATE, AUTOMOBILE COMPONENT, AND AUTOMOBILE WHEEL, AS WELL AS, MANUFACTURING METHOD OF LAMINATE
To provide a light-weight laminate, an automobile component, and an automobile wheel, as well as, a manufacturing method of a laminate having light weight and high shape freedom.SOLUTION: A laminate comprises a laminate part comprising: an (A)-layer containing a fiber reinforced thermoplastic resin...
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Zusammenfassung: | To provide a light-weight laminate, an automobile component, and an automobile wheel, as well as, a manufacturing method of a laminate having light weight and high shape freedom.SOLUTION: A laminate comprises a laminate part comprising: an (A)-layer containing a fiber reinforced thermoplastic resin (A); a (B)-layer containing a thermoplastic foaming resin (B); and a (C)-layer containing a fiber reinforced thermoplastic resin (C), in this order. A difference between melting points of the resin (A) and resin (B) (or glass transition points when having no melting point) is 50°C or less, and a difference between melting points of the resin (C) and resin (B) (or glass transition points when having no melting point) is 50°C or less. The laminate part includes: a low density part where apparent density of the resin (B) is low; and a high density part where the apparent density of the resin (B) is high. A ratio (ρ2/ρ1) of the apparent density (ρ2) of the resin (B) in the high density part, relative to the apparent density (ρ1) of the resin (B) in the low density part is 1.5 or more. In a plan view seen from a lamination direction of the laminate part, when a total area of the laminate part is 100%, an area of the low density part is 50 to 90%, an area of the high density part is 10 to 50%. An automobile component comprises a continuous fiber reinforced thermoplastic resin (D) and a discontinuous fiber reinforced thermoplastic resin (E).SELECTED DRAWING: None
【課題】本発明は、軽量な積層体、自動車部品、及び自動車用ホイール、並びに軽量で形状自由度が高い積層体の製造方法を提供することを目的とする。【解決手段】繊維強化熱可塑性樹脂(A)を含む(A)層と、熱可塑性発泡樹脂(B)を含む(B)層と、繊維強化熱可塑性樹脂(C)を含む(C)層とをこの順に含む積層部分を含み、樹脂(A)と樹脂(B)とで融点(又は融点を有しない場合はガラス転移点)の差が50℃以下であり、樹脂(C)と樹脂(B)とで融点(又は融点を有しない場合はガラス転移点)の差が50℃以下であり、積層部分が、樹脂(B)の見かけの密度が低い低密度部分と高い高密度部分とを含み、低密度部分における樹脂(B)の見かけの密度(ρ1)に対する、高密度部分における樹脂(B)の見かけの密度(ρ2)の割合(ρ2/ρ1)が1.5以上であり、積層部分の積層方向からみたときの平面視において、積層部分の総面積を100%としたときに、低密度部分の面積が50〜90%であり、高密度部分の面積が10〜50%であることを特徴とする、積層体。連続繊維強化熱可塑性樹脂(D)と不連続繊維強化熱可塑性樹脂(E)とを含むことを特徴とする、自動車部品。【選択図】なし |
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