LAMINATE

• Main Authors: SAKATA HIROAKI, SADO YUKI
• Format: Patent
• Language: English; Japanese
• Published: 13.09.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

To provide a lightweight laminate that can maintain mechanical properties while exhibiting excellent flame retardancy.SOLUTION: A laminate containing fibers, a matrix resin and a flame retardant filler is provided. The flame retardant filler is at least partially zinc borate. When an area occupied by the flame retardant filler in an entirety of a 45° cross section in the cross section 45° with respect to a direction of the fibers is 100%, an area ratio R occupied by the flame retardant filler in a range S of 400 μm from one outermost surface of the laminate is 70% or more. When an area occupied by the flame retardant filler is A and an area occupied by the matrix resin is B in the range S, the laminate satisfies a relation (I): 0.01<A/B<0.2 (I)SELECTED DRAWING: None 【課題】本発明は、優れた難燃性を発現しつつ力学特性を維持できる軽量な積層体を提供することを目的とする。【解決手段】繊維、マトリックス樹脂および難燃剤フィラーを含む積層体であって、該難燃剤フィラーは、少なくとも一部がホウ酸亜鉛であって、繊維方向に対して４５°の断面において、該４５°の断面全体における該難燃剤フィラーが占める面積を１００％としたとき、片方の積層体最表面から４００μｍの範囲Ｓにおける該難燃剤フィラーが占める面積比Ｒが７０％以上であり、かつ該範囲Ｓにおいて、該難燃剤フィラーが占める面積をＡ、マトリックス樹脂面積をＢとしたときに、以下の関係式（Ｉ）が成り立つ積層体。０．０１＜Ａ／Ｂ＜０．２ （Ｉ）【選択図】なし