在制取粉末冶金多孔阻焰材料时,根据Pekle准数推算出燃气火焰熄灭的临界熄火孔径值,依据此值来确定原料粉末粒度和制取工艺参数,从而可使所制材料的孔径准确符合临界熄火孔径值要求,其材料能有效地发挥阻焰、熄火、防爆作用。 In the preparation of powder metallurgy porous flame-retardant materials, according to Pekle quasi-projected gas flame out of the critical flame-out aperture value, based on this value to determine the particle size of raw materials and process parameters, so that the material can be made exactly match the aperture Critical flameout aperture requirements, the material can effectively play flame retardant, flameout, explosion-proof effect.