| 摘要 |
An aluminous-fiber mass which, when used as a filler for various materials such as, e.g., resins, coating materials, metals, and ceramics, can give mixtures having reduced viscosity to thereby heighten the productivity of products containing the aluminous fibers. The fiber mass can sufficiently heighten the thermal conductivity of a thermoset resin material. The aluminous-fiber mass, when examined by electron microscopy, has a fiber frequency distribution in which the number of fibers having a fiber length of 50-200 µm is 70% or more (including 100%), the number of fibers having a fiber length shorter than 50 µm is 30% or less (including 0%), the number of fibers having a length of 50-100 µm is 30-50%, the number of fibers having a length of 100-200 µm, excluding 100 µm, is 30-50%, and the number of fibers having a length exceeding 200 µm is 20% or less (including 0%). The fiber mass comprises 70-100 mass% Al2O3 and 0-30 mass% SiO2.
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