COMPOSITION FOR SOUND-BLOCKING SHEET MEMBER, SOUND-BLOCKING SHEET MEMBER, AND SOUND-BLOCKING STRUCTURE BODY
申请人:Mitsubishi Chemical Corporation
公开号:EP3786944A1
公开(公告)日:2021-03-03
Provided is a composition for a sound insulating sheet member, a sound insulating sheet member, and a sound insulating structure body with excellent sound insulating performance. A sound insulating structure body including: a plurality of convex-shaped rubber-elastic resonant portions; and a sheet-like support that supports the resonant portions, wherein the resonant portions have a storage modulus G' obtained from a composite curve of dynamic viscoelasticity according to ISO 6721-4 of 100 MPa or less at 25°C and 10 kHz, and the areal density of the support is 1.0 kg/m2 or less.
本发明提供了一种用于隔音片状构件的组合物、一种隔音片状构件和一种具有优异隔音性能的隔音结构体。一种隔音结构体,包括:多个凸形橡胶弹性谐振部分;以及支撑谐振部分的片状支座,其中谐振部分在 25°C 和 10 kHz 时的存储模量 G' 为 100 MPa 或以下,该存储模量是根据 ISO 6721-4 动态粘弹性复合曲线获得的,支座的等密度为 1.0 kg/m2 或以下。