ADIABATIC SOUND ABSORBER WITH HIGH THERMOSTABILITY
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United States of America Patent
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Issued Date -
Oct 8, 2009
app pub date -
Feb 23, 2007
filing date -
Aug 11, 2006
priority date (Note) -
Abandoned
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Abstract
Provided is a flexible adiabatic sound absorber with high thermal insulation performance and acoustic performance, particularly an adiabatic sound absorbing material that is suitable for a new severe requirement specification regarding aircrafts. The adiabatic sound absorber comprises mixing uniformly 20 to 80% of a high-thermostable inorganic fiber whose high-temperature strength is maintained at 1000° C. or more, 10 to 60% of a flame-retarded organic fiber whose thermal melting or decomposition temperature is 350° C. or more and 10 to 25% of an organic fiber having a low melting point and treating the obtained woolly felt with heating to transform the whole into the mat-form material of 8 to 50 mm in thickness.
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