COMPOSITION FOR PYROTECHNIC STRING-TYPE IGNITER (PSI), AND ITS MANUFACTURING METHOD Russian patent published in 2012 - IPC H01M6/36 

FIELD: explosives.

SUBSTANCE: according to the invention there proposed is composition for pyrotechnic string-type igniter (PSI), which contains the following components, wt %: zirconium 27.3-27.4; potassium perchlorate 21.36-21.90; asbestos 2.48-2.50; latex 1.57, lignosulphonate 0.09-0.11 and barium chromate is the rest. Manufacturing method of PSI involves additional placing on filter-substrate of a gasket of asbestos-treated or separator asbestos paper, which is pre-moistened in saturated water solution of potassium perchlorate, and which has thickness (0.09-0.11) mm, density (g/cm³) of not less than 0.5 and with pore size (mcm) of not more than 0.5, and removal of liquid phase from the suspension is performed at pressure drop on filter-substrate in the range of (0.02-0.25) MPa.

EFFECT: considerable increase in burning speed of pyrotechnic strip-type igniter.

2 cl, 1 tbl