D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
D01F 9/08 (2006.01) C08K 3/22 (2006.01)
Patent
CA 2702170
An object of the invention is to provide an alumina fiber aggregate which, when used as a filler in various materials such as, e.g., resins, coating materials, metals, and ceramics, enables the mixtures to have reduced viscosity and thereby heightens the productivity of products containing alumina fibers, and which enables cured thermosetting resins to have a sufficiently heightened thermal conductivity. This alumina fiber aggregate, when examined by the electron microscope method, gives a frequency distribution regarding number of fibers, wherein 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 smaller than 50 µm is 30% or less (including 0) , the number of fibers of 50-100 µm is 30-50%, the number of fibers longer than 100 µm but not longer than 200 µm is 30-50%, and the number of fibers longer than 200 µm is 20% or less (including 0). The fibrous mass comprises 70-100% by mass of Al2O3 and 0-30% by mass of SiO2.
L'invention porte sur une matière de fibres alumineuses qui, utilisée en tant que charge pour divers matériaux, résines, matériaux de revêtement, métaux et céramiques, par exemple, peut fournir des mélanges à viscosité réduite améliorant ainsi la productivité de produits contenant les fibres alumineuses. La matière fibreuse peut améliorer la conductivité thermique d'un matériau à base de résine thermodurcissable de façon suffisante. Examinée au microscope électronique, la matière de fibres alumineuses présente une répartition de fréquence de fibres dans laquelle les fibres de 50 à 200 µm de longueur constituent 70 % ou plus (100 % inclus), les fibres de moins de 50 µm constituent 30 % ou moins (0 % inclus), les fibres de 50 à 100 µm constituent de 30 à 50 %, les fibres de 100 à 200 µm, 100 µm exclus, constituent de 30 à 50 %, et les fibres dépassant 200 µm constituent de 20 % ou moins (0 % inclus). La masse des fibres comprend de 70 à 100 % en masse d'Al2O3 et de 0 à 30 % en masse de SiO2.
Higuchi Takayuki
Hirano Isamu
Ohshima Yasutaka
Denki Kagaku Kogyo Kabushiki Kaisha
Goudreau Gage Dubuc
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