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Title:
SOUND-ABSORBING MATERIAL AND SOUND-ABSORBING COMPOSITE MATERIAL
Document Type and Number:
Japanese Patent JP2010248666
Kind Code:
A
Abstract:

To provide a sound-absorbing material which has good flame retardancy and heat resistance, is thin and lightweight, and is excellent in a sound-absorbing performance; and to provide a sound-absorbing composite material.

There is provided the sound-absorbing material which comprises aromatic polyamide nanofibers each having a diameter of 10-500 nm on a cross section orthogonal to the axis of the fiber and has a sound-absorbing rate of ≥60% at a frequency of 4,000 Hz. And there is provided the sound-absorbing composite material which is produced by laminating one or more layers comprising aromatic polyamide nanofibers each having a diameter of 10-500 nm on a cross section orthogonal to the axis of the fiber, to one or more fiber structure layers comprising fibers each having a diameter of 0.5-100 μm on a cross section orthogonal to the axis of the fiber, and has a sound-absorbing rate of ≥60% at a frequency of 4,000 Hz.


Inventors:
IMAGAWA TOMOJI
Application Number:
JP2009000101082
Publication Date:
November 04, 2010
Filing Date:
April 17, 2009
Export Citation:
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Assignee:
TEIJIN TECHNO PRODUCTS LTD
International Classes:
B32B5/26; B32B27/34; C08G69/32; D01F6/80; D03D15/00; D04H1/4342; D04H1/728
Domestic Patent References:
JP2009062630A2009-03-26
JPH10254452A1998-09-25
JP2007279649A2007-10-25
JP2005232598A2005-09-02
JP2008537798A2008-09-25
JP2005200779A2005-07-28
Attorney, Agent or Firm:
三原 秀子