Study on anti-infrared performance of organohalogen polymer smoke agent

Abstract

Presented herein is an experimental study on the organohalogen polymer smoke agent. In smoke box experiment, the transmittance of smoke agent at 3-5 μm and 8-14 μm was used as the index, the effects of each factor on the anti-infrared performance of smoke agent were analyzed by orthogonal test method. The results showed that the main factors affecting the extinction properties of the organohalogen polymer smoke agent in the infrared band were zinc magnesium mass ratios of Zn-Mg alloy powders, Particle size of Zn-Mg alloy powders, and types of organohalogen polymer, and the secondary factor was the organohalogen polymer mass ratio. The transmittance of the best organohalogen polymer smoke agent composed of 30% Zn-10%Mg alloy powder (>325mesh), 50% CP-70, and 20% KClO4 to the 3-5μm and 8-14μm bands is 27.67% and 58.07%, respectively, and the corresponding TOP is 93.82 m2·kg1 and 39.69 m2·kg1. The combustion of the smoke agent composed of Zn-10%Mg alloy powder and Zn powder was compared in combustion experiment. The smoke agent composed of Zn-10%Mg alloy powder instead of Zn powder has a faster burning speed, larger burning flame area, and higher temperature.