Ignition of W—Teflon—Al Powder Mixtures

摘要

Teflon—metal mixtures are widely used in pyrotechnics as blasting compositions (Teflon—Mg mixtures) [1], inhibitors of combustion [2], and thermal traps in helicopters and aircrafts. Explosive processing of metal—polymer composites is used to fabricate structural, antifriction, heat-insulating, and soundproof materials [3]. In some cases, heat-generating composites must have high specific gravity which can be attained in the presence of heavy-weight metals such as W. In contrast to well documented reactions of Teflon with Al and Mg [4], the ignition, combustion, and detonation of Teflon—W mixtures practically have not been studied so far. In this communication we fill this gap and report our recent results on the ignition of Teflon—W mixtures containing Al as a booster.