To provide a thermoplastic elastomer composition capable of forming a moded product having excellent designability while maintaining low temperature impact resistance.SOLUTION: There is provided a thermoplastic elastomer composition which comprises the following components (A) and (B), wherein the die swell ratio (at a test temperature of 210°C and a shear rate of 243/s) in a capillary rheometer (JIS K7199) is 1.10 or more. The glossiness measured at an incident angle of 60° according to ISO 2810 for a specimen for gloss measurement composed of the thermoplastic elastomer composition is 50% or less and the flexural modulus measured according to ISO 178 (2010) for a specimen for flexural modulus measurement composed of the thermoplastic elastomer composition is 100 to 700 MPa. Component (A): a propylene-based block copolymer, Component (B): an ethylene-α-olefin copolymer.SELECTED DRAWING: None
【課題】低温耐衝撃性を維持しながら、意匠性に優れた成形品を可能とする熱可塑性エラストマー組成物を提供する。【解決手段】下記成分(A)と成分(B)を含有する熱可塑性エラストマー組成物であって、キャピラリーレオメーター(JIS K7199)におけるダイスウェル比(試験温度210℃、せん断速度243/s)が1.10以上であり、該熱可塑性エラストマー組成物よりなる光沢測定用試験片についてISO 2810に従って入射角60°で測定した光沢度が50%以下であり、かつ該熱可塑性エラストマー組成物よりなる曲げ弾性率測定用試験片についてISO 178(2010年)に従って測定した曲げ弾性率が100~700MPaである、熱可塑性エラストマー組成物。成分(A):プロピレン系ブロック共重合体成分(B):エチレン・α-オレフィン共重合体【選択図】なし
THERMOPLASTIC ELASTOMER COMPOSITION, INJECTION-MOLDED PRODUCT, AND AIR BAG HOUSING COVER
熱可塑性エラストマー組成物、射出成形品及びエアバッグ収納カバー
2022-03-30
Patent
Electronic Resource
Japanese
THERMOPLASTIC ELASTOMER COMPOSITION, INJECTION-MOLDED PRODUCT AND AIR-BAG HOUSING COVER
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