ALUMINA FIBER AGGREGATE AND PRODUCTION METHOD THEREFOR

Title:

ALUMINA FIBER AGGREGATE AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2018/012423

Kind Code:

A1

Abstract:

A needled alumina fiber aggregate made of short alumina fibers, the needled alumina fiber aggregate being characterized in that: the average fiber diameter of the short alumina fibers is 6.0 µm to 10.0 µm; the specific surface area of the short alumina fibers is 0.2 m2/g to 1.0 m2/g; and the high temperature cycle open-side surface pressure persistence (%) of the alumina fiber aggregate is at least 45%. Preferably, the value of subtracting, from the length-weighted geometric average diameter for the diameter of the short alumina fibers, two times the standard error thereof is at least 6.0 µm. Preferably, the proportion of the short alumina fibers with a diameter exceeding 10.0 µm is not more than 5.0%, on a fiber number basis.

Inventors:

KIMURA YUSUKE (JP)

Application Number:

PCT/JP2017/024953

Publication Date:

January 18, 2018

Filing Date:

July 07, 2017

Export Citation:

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Assignee:

MITSUBISHI CHEM CORP (JP)

International Classes:

D04H1/4209; D01F9/08

Domestic Patent References:

WO2014115814A1	2014-07-31
WO2014069589A1	2014-05-08

Foreign References:

JP2007332531A	2007-12-27
JP2002356380A	2002-12-13
JP2010031416A	2010-02-12
JPS5831118A	1983-02-23
JPS61186519A	1986-08-20
JP2013170338A	2013-09-02

Other References: