The present application discloses a thermal spark-conducting tube (shock tube) provided with a pyrotechnical composition with nanoscale particles containing 35-62% by weight aluminium (with a particle size of 5-18 µm or 20-100 nm), 32-60% by weight iron oxide (with a particle size of 10-100 nm), 0-25% by weight potassium perchlorate and 0.8-1.5% by weight talc. The reduction in the size of the particles of oxidizing agent and reducer in the pyrotechnical composition made it possible to reduce or eliminate substances with low Tammann temperatures (potassium perchlorate), achieving greater safety (friction and impact resistance) and preserving spark propagation even in the presence of cuts or holes in the tubes.
C06B 33/12 - Compositions contenant des particules de métal, alliage, bore, silicium, sélénium ou tellure avec au moins un matériau fournissant de l'oxygène, qui est soit un oxyde métallique, soit un sel, organique ou inorganique, susceptible de donner un oxyde métallique le matériau étant formé de plusieurs composés donneurs d'oxygène
C06B 45/02 - Compositions ou produits définis par une structure ou des dispositions particulières des composants ou du produit comportant des particules de dimensions ou formes différentes
B82Y 30/00 - Nanotechnologie pour matériaux ou science des surfaces, p. ex. nanocomposites
2.
PROCESS FOR PRESSING DELAY ELEMENTS FOR NON-ELECTRIC INITIATORS
"Process for pressing delay elements for non-electric initiators" refers to a patent relating to improvements introduced in a process for pressing delay elements used in non-electric initiators for explosives in general and explosive accessories in particular, produced to provide the precise firing time (delay time) for continuation of the explosion sequence as intended by detonation design, an optimized process which achieves bulk density regularity and homogeneity of the pressed material, providing the advantages of decreasing firing time variability, greater repeatability and precision of the dosage of delay mixtures, and less height variation.
brevets