Continuous process for solvent-free manufacture of heat-curable composite pyrotechnic products
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United States of America Patent
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Nov 3, 1998
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N/A
app pub date -
Apr 23, 1997
filing date -
May 23, 1996
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Abstract
The present invention relates to the field of the continuous manufacture of composite pyrotechnic products. A heat-curable liquid binder (3) is mixed with a thickening filler (4) in a mixer (1) so as to obtain a viscous premix (2) which is unreactive at ambient temperature and which can be subsequently mixed with oxidizing fillers (17) to give, after extrusion and chopping, intermediate products (24) which are not yet crosslinked but which have stable geometrical dimensions. The structure of the products (24) is subsequently set by crosslinking the binder in an oven (26). The invention permits the continuous industrial manufacture in series of small crosslinked composite pyrotechnic charges without any 'pot life' constraint since the binder does not change at ambient temperature.
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