| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resin composition combinedly having high rigidity and excellent damping property such as >=0.03 dissipation factor and >=30,000kgf/cm<2> flexural modulus at a room temperature. SOLUTION: This highly rigid and damping resin composition is composed of (a) 40-90wt.% a thermoplastic resin, (b) 3-20wt.% a block copolymer having a block structure of the formula: A(BA)n [A indicates a polymer block of an aromatic vinyl compound; B indicates a polymer block composed of isoprene or isoprene and butadiene, containing 3,4-bonding and 1,2-bonding in a total amount of >=40% and having a principal dispersion peak of tanδat >=0 deg.C; (n) is an integer of >=1] and (c) 7-40wt.% whiskers having 0.05-4μm average fiber diameter, 5-500μm average fiber length and >=7 aspect ratio.
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