THERMOPLASTIC ELASTOMER COMPOSITION AND MOLDED BODY
To provide a thermoplastic elastomer composition that enables a further increase in tanδ at 23°C, and a molded body produced using the thermoplastic elastomer composition and having excellent damping properties.SOLUTION: A thermoplastic elastomer composition according to the present disclosure is ob...
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Zusammenfassung: | To provide a thermoplastic elastomer composition that enables a further increase in tanδ at 23°C, and a molded body produced using the thermoplastic elastomer composition and having excellent damping properties.SOLUTION: A thermoplastic elastomer composition according to the present disclosure is obtained by dynamic crosslinking of a mixture that includes a component (A): an elastomer having a glass transition temperature of 0°C or lower, having at least one structural unit of a structural unit that is a hydrogenated isoprene-derived structure and an isobutene-derived structural unit, and having an unsaturated bond; a component (B): an α-olefin-based thermoplastic resin (excluding a 4-methyl-1-pentene α-olefin copolymer and one corresponding to a component (E)); a component (C): an aromatic petroleum resin, an aliphatic petroleum resin, an aliphatic/aromatic petroleum resin, a dicyclopentadiene-based petroleum resin, a terpene resin, a rosin derivative, a 4-methyl-1-pentene α-olefin copolymer, and hydrogenated substances thereof, in the presence of a component (D): a crosslinking agent.SELECTED DRAWING: None
【課題】23℃でのtanδをより高めることができる熱可塑性エラストマー組成物、及び該熱可塑性エラストマー組成物を用いて作製された制振性に優れる成形体を提供する。【解決手段】本発明に係る熱可塑性エラストマー組成物は、(A)ガラス転移温度が0℃以下であり、イソプレンに由来する構造が水添された構造単位及びイソブテンに由来する構造単位の少なくとも一方の構造単位を有し、不飽和結合を有するエラストマーと、(B)α−オレフィン系熱可塑性樹脂(但し、4−メチル−1−ペンテン・α−オレフィン共重合体及び(E)成分に該当する場合を除く)と、(C)芳香族系石油樹脂、脂肪族系石油樹脂、脂肪族/芳香族系石油樹脂、ジシクロペンタジエン系石油樹脂、テルペン樹脂、ロジン誘導体、4−メチル−1−ペンテン・α−オレフィン共重合体、並びに、これらの水添物と、を含む混合物を、(D)架橋剤の存在下で動的に架橋させてなるものである。【選択図】なし |
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