X-RAY ABSORBING MATERIAL (OPTIONS) Russian patent published in 1998 - IPC

FIELD: medicine; manufacture of overalls, protective coatings, insulating materials. SUBSTANCE: according to first option, polydispersional blend segregated by mixing up and including metal particles of size 10^-9-10^-3 m fixed on textile base surface is used as filler; material density is specified to satisfy equation ρ_f = (0,01-0,20)ρ_p, where ρ_f is density of X-ray absorbing material as a whole and ρ_p is density of X-ray absorbing filler particles; according to second option, filler is same blend as that used in first option but particles are surrounded by space of matrix made of component hardening at atmospheric pressure; total mass of segregated polydispersional blend is specified to satisfy equation M = (0.05 - 0.5) m, where M is total mass of segregated polydispersional X-ray absorbing filler; m is equivalent mass of filler material equal to mass M as far as its protective properties are concerned; according to third option, same blend is used but particles are fixed on intermediate medium in the form of textile base, mineral fiber, etc. ; medium is surrounded by matrix space. EFFECT: reduced toxicity of material, improved strength and reduced density of its textile base (first option); reduced percentage of X-ray absorbing filler thereby reducing mass and thickness of material without reducing its X-ray absorbing properties (second version); improved uniformity of filler distribution over matrix space whose density is much lower than that of filler (third option). 4 cl, 2 dwg