The invention relates to a preparing method of a composite energetic fragment with a
metal matrix on an outer layer and a
polymer matrix on an inner layer, and belongs to the field of energetic materials and active fragment materials.
Tungsten powder /
zirconium powder is placed in a comprehensive planetary
ball mill to be evenly mixed; uniform
powder is placed in a customization mold, and pre-pressing molding and demolding are carried out;
sintering is carried out, and a hollow cylindrical product A is obtained; aluminum powder,
tungsten powder and
polytetrafluoroethylene powder are placed in the comprehensive planetary
ball mill to be evenly mixed, the hollow cylindrical product A is filled with uniform powder, and pre-pressing molding is carried out; and
sintering is carried out, and a final product is obtained. The material serves as the
energetic material and is very insensitive and safe under the static state, has certain
toughness and strength and can be directly machined. Under the high-speed
impact effect, violent explosion and
combustion happen, and
high heat high temperature is generated; and the material serves as the fragment material,
high kinetic energy and high
chemical energy released after
impact explosion are used, and comprehensive damage of penetration, inner explosion, fire setting and
overpressure of the target can be achieved.