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AssigneesKanebo, Ltd., Mitsui Mining Company, Limited
InventorsTakashi Ito, Osamu Iwasaki, Akimicu Ohuchi, Koichiro Otomo, Yoshiaki Saito
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Disclosed are a high-purity alumina continuous filament woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, a hybrid woven fabric comprising this high-purity alumina continuous filament and a high-strength continuous filament having a tensile stength of at least 200 kg/mm.sup.2, processes for the preparation of these woven fabrics, a high-purity alumina continuous filament valuable for the production of these woven fabrics, and a process for the preparation of this high-purity alumina continuous filament. These woven fabrics are very useful as a reinforcing fibrous substrate of a fiber-reinforced composite material or as a heat-insulating material.
A high-purity alumina continuous filament woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, having been woven from high-purity alumina continuous filament to which an epoxy resin sizing agent has been applied before weaving and which has been removed after weaving.
A high-purity alumina continuous filament hybrid woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m and a high-strength continuous filament having a tensile strength of at least 200 kg/mm.sup.2.
A high-purity alumina continuous filament for weaving, which comprises a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, which is coated with 1 to 7% by weight of an epoxy resin.
A process for the preparation of a high-purity alumina continuous filament woven fabric, which comprises weaving a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, wherein an epoxy resin is applied to the high-purity alumina continuous filament.
A process for the preparation of a high-purity alumina continuous filament hybrid woven fabric, which comprises weaving a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m and a high-strength continuous filament having a tensile strength of at least 200 kg/mm.sup.2 to form a hybrid woven fabric, wherein an epoxy resin is applied to the high-purity alumina continuous filament.
A process for the preparation of a high-purity alumina continuous filament for weaving, which comprises applying an epoxy resin to a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m and heat-treating the epoxy resin-applied continuous filament.
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