Propellants Reactivity Enhancement with Nanothermites

被引：16

作者：

Berthe, Jean-Edouard ^{[1
]}

Comet, Marc ^{[1
]}

Schnell, Fabien ^{[1
]}

Suma, Yves ^{[2
]}

Spitzer, Denis ^{[1
]}

机构：

[1] CNRS, NS3E Nanomateriaux Syst Sous Sollicitat, Extremes UMR ISL 3208, UNISTRA, 5 Rue General Cassagnou, F-68301 St Louis, France

[2] ISL, 5 Rue General Cassagnou, F-68301 St Louis, France

来源：

PROPELLANTS EXPLOSIVES PYROTECHNICS | 2016年 / 41卷 / 06期

关键词：

Propellants; Nanothermites; Ignition; Coating; Velocity;

D O I：

10.1002/prep.201600029

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Propellant grains (Vectan A1) were coated with a thin and stable layer (50m, 10wt-%) of a green sulfate-based nanothermite (Na2SO4/Al). This flash composition was used herein as an internal pyrotechnic lighter to accelerate the ignition and the combustion of the propellant. The combustion of the modified propellant, which was tested in one-end open tubes, propagates four orders of magnitude faster than the one of pristine Vectan A1. This tremendous effect was tuned by varying the proportion of coated Vectan A1 grains from 20 to 100% in the samples. The percolation threshold is in between 20 and 40%. Beyond this point, the effect can be improved by increasing the proportion of nanothermite-coated propellant grains in the charge.

引用

页码：994 / 998

页数：5