| 摘要 |
PROBLEM TO BE SOLVED: To provide a less-expensive thermal insulation material comprising inorganic fiber, fumed silica and/or fumed alumina and inorganic powder; showing a low coefficient of thermal conductivity, a superior heat insulation property and at the same time a superior processability or workability, a low dust emission, providing both vibration resistance and water resistance, a low shrinkage in thickness direction after repeated heating and in particular a superior strength.SOLUTION: This invention shows that a weight ratio between ceramic fiber and glass fiber is 0.2 to 2.0, a glass fiber melts and adheres other compositions through calcination, three-point flexure strength at normal temperature is 0.9 MPa or more, thermal conductivity [600°C] is 0.085 W/[m*K] or less. If inorganic fiber with a total amount of non-fibrous particles (shot) being reduced to 20 wt% or less of the entire fiber is used, it is possible that three-point flexure strength at normal temperature is 0.9 MPa or more and thermal conductivity is 0.065 W/[m*K] or less.SELECTED DRAWING: None |
