RESIN COMPOSITION, MOLDED ARTICLE, AND METHOD OF MANUFACTURING MOLDED ARTICLE

• Main Authors: ABE TETSUO, SUGITA YASUHISA
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2016
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

PROBLEM TO BE SOLVED: To provide a resin composition which is reduced in weight without decreasing its strength.SOLUTION: A resin composition contains a thermoplastic resin (A), hollow microspheres (B), and an organic fiber (C) having a melting point and a decomposition starting temperature both higher than the melting point of the thermoplastic resin (A), respectively, in a predetermined amount. The thermoplastic resin (A) is contained in an amount of 20 mass% or more and 99 mass% or less, the hollow microspheres (B) are contained in an amount of 1 mass% or more and 80 mass% or less, and the organic fiber (C) is contained in an amount of 1 mass% or more and 100 mass% or less based on 100 mass% of the total of the thermoplastic resin (A) and the hollow microspheres (B). Nylon or a polyolefin resin is preferable as the thermoplastic resin (A) in terms of light weight and ease of kneading and molding. A glass bubble having pressure resistant strength is preferable as the hollow microsphere (B). At least one synthetic fiber selected from nylon fibers, aramid fibers, polyarylate fibers, and polyethylene terephthalate fibers is preferable as the organic fiber (C) from the viewpoints of kneadability and moldability.SELECTED DRAWING: None 【課題】強度が低下することなく軽量化した樹脂組成物を提供する。【解決手段】熱可塑性樹脂（Ａ）と、中空微小球（Ｂ）と、融点および分解開始温度が熱可塑性樹脂（Ａ）の融点より高い有機繊維（Ｃ）と、を所定の含有量で含有する。熱可塑性樹脂（Ａ）は２０質量％以上９９質量％以下、中空微小球（Ｂ）は１質量％以上８０質量％以下であり、有機繊維（Ｃ）は熱可塑性樹脂（Ａ）と中空微小球（Ｂ）との総量１００質量％に対して１質量％以上１００質量％以下で含有する。熱可塑性樹脂（Ａ）は、軽量で混練や成形の容易さにより、ナイロンまたはポリオレフィン系樹脂が好ましい。中空微小球（Ｂ）は、耐圧強度を有したガラスバブルが好ましい。有機繊維（Ｃ）は、混練性や成形性の観点から、ナイロン繊維、アラミド繊維、ポリアリレート繊維、ポリエチレンテレフタレート繊維の中から選ばれる少なくとも１種以上の合成繊維が好ましい。【選択図】なし