Title:
CARBON-FIBER-MOLDED HEAT INSULATOR AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/059819
Kind Code:
A1
Abstract:
[Problem] To provide a carbon-fiber-molded heat insulator in which heat insulation performance is high and stress breakage can be prevented. [Solution] A carbon-fiber-molded heat insulator in which a plurality of carbon fiber sheets configured from a carbonaceous substance are stacked, each of the carbon fiber sheets having carbon fiber felt in which carbon fibers are three-dimensionally and randomly interlaced, and a protective carbon layer that covers a carbon fiber surface of the carbon fiber felt. The carbon fibers include isotropic-pitch carbon fibers and polyacrylonitrile carbon fibers. The ratio by mass of the isotropic-pitch carbon fibers relative to the total mass of the carbon fibers is 25% or greater, the ratio by mass of the polyacrylonitrile carbon fibers relative to the total mass of the carbon fibers, is 5% or greater, the ratio of the combined mass of the isotropic-pitch carbon fibers and the polyacrylonitrile carbon fibers relative to the total mass of the carbon fibers is 90% or greater, and the bulk density of the carbon-fiber-molded heat insulator is 0.10 to 0.25 g/cm3.
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Inventors:
MORIMOTO MASAKAZU (JP)
SOGABE TOSHIAKI (JP)
YOSHIMURA HIROSHI (JP)
SOGABE TOSHIAKI (JP)
YOSHIMURA HIROSHI (JP)
Application Number:
PCT/JP2019/036824
Publication Date:
March 26, 2020
Filing Date:
September 19, 2019
Export Citation:
Assignee:
OSAKA GAS CHEMICALS CO LTD (JP)
International Classes:
F16L59/02; B32B5/26; B32B5/28; D04H1/4242
Foreign References:
| JP2018076963A | 2018-05-17 | |||
| JP2013144859A | 2013-07-25 | |||
| JP2017172790A | 2017-09-28 | |||
| JP2018024174A | 2018-02-15 | |||
| US20120219778A1 | 2012-08-30 | |||
| US6551951B1 | 2003-04-22 | |||
| JP2019043099A | 2019-03-22 | |||
| JP2018158874A | 2018-10-11 |
Attorney, Agent or Firm:
OHMAE Kaname et al. (JP)
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