Continuous process for solvent-free manufacture of heat-curable

Details Continuous process for solvent-free manufacture of heat-curable Continuous process for solvent-free manufacture of heat-curable

1997-04-23

1998-11-03

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Extrusion to form sheet or rod

264 31, 264 34, 1491096, C06B 2100

Patent

active

058313397

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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