Yu Seung Jung, Kim Goonhyeok, Jung Hyunsook, Jung Heesoo, Jung Jaewuk, Kim Daegyoum
Chem-Bio Technology Center, Agency for Defense Development, Yuseong-Gu, Daejeon, 34063, Republic of Korea.
Weapon Systems Engineering, University of Science and Technology, Gajeong-Ro, Yuseung-Gu, Deajeon, 34113, Republic of Korea.
Sci Rep. 2024 Jul 17;14(1):16539. doi: 10.1038/s41598-024-67643-0.
Chemical warfare agents (CWAs) pose a threat as gaseous substances and as liquid aerosols, necessitating chemical warfare-protective clothing for soldiers. The paramount consideration lies in the effectiveness of the clothing as a barrier against the pertinent CWAs. This paper presents a dynamic swatch test method aimed at evaluating the performance of such clothing against liquid-phase aerosol penetration. Central to the methodology is a specialized test cell designed to rotate to the left and right, integrated within a laboratory wind tunnel, replicating mission-relevant conditions with varying wind speeds. Utilizing di(2-ethylhexyl) sebacate particles as liquid aerosols, tests were conducted at wind speeds of 1.0, 3.0, and 5.0 m/s. Penetration assessment relied on analyzing particle counts downstream and upstream of the fabric, with preliminary studies showing that higher wind speeds and fabric air permeabilities increase penetration at an equivalent face velocity of 5.0 cm/s. Interestingly, penetration decreased when fabric samples were subjected to rotation. The system and methodology devised demonstrated consistent and repeatable results, offering valuable insights into optimizing the effectiveness of chemical warfare-protective clothing. This research contributes to advancing methodologies for testing protective clothing, crucial for ensuring the safety of military personnel in hazardous environments.
化学战剂（CWAs）作为气态物质和液体气溶胶构成威胁，这使得士兵需要配备化学战防护服。首要考虑因素在于该防护服作为抵御相关化学战剂屏障的有效性。本文提出一种动态样本测试方法，旨在评估此类防护服对液相气溶胶渗透的防护性能。该方法的核心是一个专门设计的可左右旋转的测试单元，它集成在实验室风洞中，能在不同风速下模拟与任务相关的条件。以癸二酸二（2-乙基己基）酯颗粒作为液体气溶胶，在1.0、3.0和5.0米/秒的风速下进行测试。渗透评估依靠分析织物下游和上游的颗粒计数，初步研究表明，在等效面风速为5.0厘米/秒时，较高的风速和织物透气率会增加渗透。有趣的是，当织物样本进行旋转时，渗透会降低。所设计的系统和方法显示出一致且可重复的结果，为优化化学战防护服的有效性提供了有价值的见解。这项研究有助于推进防护服测试方法，这对于确保军事人员在危险环境中的安全至关重要。
