Goods based on refractory fibers are currently becoming more and more widely used [1]. One of the promising forms of such goods is refractory paper. Refractory paper is used abroad in various fields of engineering [2, p. 71; 3] because of its valuable physicochemical and engineering properties; the low thermal conductivity and thermal capacity; the excellent thermal-shock resistance; its ability to withstand the action of zinc and aluminum melts; good dielectric properties; etc. The operational temperature of the paper can reach 1150~ which is 500~ higher than asbestos paper.Research has established that the fibers in the sheet must be fastened together by bonding agents added to the paper composition, to produce a strong sheet.
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