Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HEAT INSULATING MATERIAL
PROBLEM TO BE SOLVED: To provide a heat insulating material that suppresses an increase in thermal conductivity to maintain excellent thermal insulation properties even at a high temperature of 1,500°C or more, and is excellent in heat-resisting properties at 1,700°C or more.SOLUTION: In a heat insulating material made of a porous sintered body comprising MgAlOand having a porosity of not less than 60% and less than 73%, pores having a pore size of not less than 0.8 μm and less than 10 μm occupy not less than 70 vol% and less than 90 vol% of the total pore volume and pores having a pore size of not less than 0.01 μm and less than 0.8 μm occupy not less than 10 vol% and less than 20 vol% of the total pore volume, and the thermal conductivity at 1,000°C or more and 1500°C or less is made not to exceed 1.5 times the thermal conductivity at not less than 20°C and less than 1,000°C.SELECTED DRAWING: None
【課題】１５００℃以上の高温でも熱伝導率の増加が抑制され、優れた断熱性が保持され、かつ、１７００℃以上での耐熱性にも優れた断熱材を提供する。【解決手段】ＭｇＡｌ2Ｏ4からなる気孔率６０％以上７３％未満の多孔質焼結体からなる断熱材において、孔径０．８μｍ以上１０μｍ未満の気孔が全気孔容積のうちの７０ｖｏｌ％以上９０ｖｏｌ％未満を占め、かつ、孔径０．０１μｍ以上０．８μｍ未満の気孔が全気孔容積のうちの１０ｖｏｌ％以上２０ｖｏｌ％未満を占め、１０００℃以上１５００℃以下における熱伝導率が、２０℃以上１０００℃未満における熱伝導率の１．５倍を超えないような構成とする。【選択図】なし
HEAT INSULATING MATERIAL
PROBLEM TO BE SOLVED: To provide a heat insulating material that suppresses an increase in thermal conductivity to maintain excellent thermal insulation properties even at a high temperature of 1,500°C or more, and is excellent in heat-resisting properties at 1,700°C or more.SOLUTION: In a heat insulating material made of a porous sintered body comprising MgAlOand having a porosity of not less than 60% and less than 73%, pores having a pore size of not less than 0.8 μm and less than 10 μm occupy not less than 70 vol% and less than 90 vol% of the total pore volume and pores having a pore size of not less than 0.01 μm and less than 0.8 μm occupy not less than 10 vol% and less than 20 vol% of the total pore volume, and the thermal conductivity at 1,000°C or more and 1500°C or less is made not to exceed 1.5 times the thermal conductivity at not less than 20°C and less than 1,000°C.SELECTED DRAWING: None
【課題】１５００℃以上の高温でも熱伝導率の増加が抑制され、優れた断熱性が保持され、かつ、１７００℃以上での耐熱性にも優れた断熱材を提供する。【解決手段】ＭｇＡｌ2Ｏ4からなる気孔率６０％以上７３％未満の多孔質焼結体からなる断熱材において、孔径０．８μｍ以上１０μｍ未満の気孔が全気孔容積のうちの７０ｖｏｌ％以上９０ｖｏｌ％未満を占め、かつ、孔径０．０１μｍ以上０．８μｍ未満の気孔が全気孔容積のうちの１０ｖｏｌ％以上２０ｖｏｌ％未満を占め、１０００℃以上１５００℃以下における熱伝導率が、２０℃以上１０００℃未満における熱伝導率の１．５倍を超えないような構成とする。【選択図】なし
HEAT INSULATING MATERIAL
断熱材
AKAMINE SHUKO (Autor:in) / FUJITA MITSUHIRO (Autor:in)
18.02.2016
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2018
| Europäisches Patentamt | 2025