METHOD FOR MANUFACTURE OF COMPOSITE FIBROUS MATERIALS Russian patent published in 1995 - IPC

FIELD: production of composite materials. SUBSTANCE: method involves briquetting precompressed layers of matrix powder alternating with layers of fibers; heating obtained briquette in shielding medium; extruding and annealing. Volume Q_l of fibers in layer is selected in accordance with formula 4Q_l/(πald_comK_f.l.)=1, matrix layer thickness is h_рr, which satisfies the requirement of (h_рrγ_рrA·L+Q_lγ_br)/(d_brγ_brA·L>1,, where a, l are width and length of composite layer of material; A, L are width and length of composite layer of briquette; d_com, d_br are diameters of fiber in composite material and in briquette; γ_рr, γ_br is density of matrix layer upon precompressing and briquetting; K_f.l. is filling coefficient. EFFECT: increased strength of composite material. 1 tbl