Title:
HEAT INSULATING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2024/071096
Kind Code:
A1
Abstract:
This heat insulating material covers a periphery of a heat generating body, and is characterized in that: the heat insulating material includes, in a thickness direction thereof, at least three layers having different specific gravities; each of the at least three layers includes carbon fibers; if the at least three layers are defined as a first heat insulating material layer, a second heat insulating material layer and a third heat insulating material layer, in order from the side closest to the heat generating body, and the specific gravities of the first heat insulating material layer, the second heat insulating material layer and the third heat insulating material layer are defined as S1, S2 and S3, respectively, then S1>S2>S3, and S1: 0.10 to 0.30 g/cm3, S2: 0.06 to 0.20 g/cm3, and S3: 0.03 to 0.10 g/cm3; and if thicknesses of the first heat insulating material layer, the second heat insulating material layer and the third heat insulating material layer are defined as T1, T2 and T3 respectively, then T1>T2>T3, and ratios of the thicknesses of each heat insulating material layer to the overall thickness of the heat insulating material are T1 ratio: 40% or more and 60% or less, T2 ratio: 20% or more and 40% or less, and T3 ratio: 10% or more and less than 30%.
Inventors:
ITO TOSHIKI (JP)
OTA YUSUKE (JP)
NOMURA KENTA (JP)
ORITO AKINORI (JP)
OTA YUSUKE (JP)
NOMURA KENTA (JP)
ORITO AKINORI (JP)
Application Number:
PCT/JP2023/034876
Publication Date:
April 04, 2024
Filing Date:
September 26, 2023
Export Citation:
Assignee:
IBIDEN CO LTD (JP)
International Classes:
F16L59/14; B32B5/26; B32B9/00; C04B35/80; C04B35/83
Domestic Patent References:
| WO2003078716A1 | 2003-09-25 | |||
| WO2006016430A1 | 2006-02-16 |
Foreign References:
| JPH02227244A | 1990-09-10 | |||
| JPH11302954A | 1999-11-02 | |||
| JPH11228281A | 1999-08-24 | |||
| CN102206852A | 2011-10-05 | |||
| JP2015040232A | 2015-03-02 | |||
| CN102808222A | 2012-12-05 | |||
| JPS6458987A | 1989-03-06 | |||
| CN111409321A | 2020-07-14 | |||
| JP2016069230A | 2016-05-09 | |||
| CN211854905U | 2020-11-03 | |||
| JP2000141526A | 2000-05-23 |
Attorney, Agent or Firm:
WISEPLUS IP FIRM (JP)
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