Planar structures with a long very pure alumina, long very pure aluminium fibers for the production of this flat structure and method for producing.

摘要

A textile of long high-purity alumina fibers having an alumina content of 95 wt% or above and a fiber diameter of 5 to 20 νm; a hybrid textile composed of such long high-purity alumina fibers and long high-strength fibers having a tensile strength of 200 kg/mm2 or above; method of producing these textiles; a long high-purity alumina fiber useful for producing such textiles; and method of producing such fiber. These textiles are useful as the material for the reinforcing fiber of fiber-reinforced composite material, heat insulation material, and so on.