纺织学报 ›› 2019, Vol. 40 ›› Issue (10): 141-146.doi: 10.13475/j.fzxb.20181103106

• 服装工程 • 上一篇    下一篇

空气层厚度对热防护面料蒸汽防护性能的影响

陈思1, 卢业虎1,2()   

  1. 1.苏州大学 纺织与服装工程学院, 江苏 苏州 215006
    2.现代丝绸国家工程实验室(苏州), 江苏 苏州 215123
  • 收稿日期:2018-11-12 修回日期:2019-07-04 出版日期:2019-10-15 发布日期:2019-10-23
  • 通讯作者: 卢业虎
  • 作者简介:陈思(1995—),女,硕士生。主要研究方向为热防护服性能评价。
  • 基金资助:
    江苏省自然科学基金项目(BK20161255);江苏省研究生科研与实践创新计划项目(SJCX17_0651);苏州市重点产业技术创新项目(SYG201812)

Influence of air gap size on steam protective performance of fireproof fabric

CHEN Si1, LU Yehu1,2()   

  1. 1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215006, China
    2. National Engineering Laboratory for Modern Silk, Suzhou, Jiangsu 215123, China
  • Received:2018-11-12 Revised:2019-07-04 Online:2019-10-15 Published:2019-10-23
  • Contact: LU Yehu

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摘要：

为探索防护服装与人体皮肤之间的空气层厚度对其蒸汽防护性能的具体影响,选用3种不同热防护面料系统,设计4种不同的空气层厚度(0、6、12、18 mm),分析二级烧伤时间、三级烧伤时间、吸收总热量和热流量,评价面料系统的蒸汽防护性能。研究结果表明:不同的面料系统提供不同的防护性能,增加面料系统的厚度有利于提升其防护性能,防水透气膜越靠近蒸汽热源,系统的防护性能越好;防护服装的蒸汽防护性能与空气层厚度有着显著相关性,在空气层厚度增加到12 mm及以上时,防护服的蒸汽防护性能会得到显著提升;通过分析蒸汽暴露和冷却阶段传感器热流量变化曲线,可进一步分析了解蒸汽暴露环境下织物系统内的热湿传递机制。

关键词: 热防护服, 空气层, 蒸汽灾害, 防护性能, 总吸收能量

Abstract:

In order to investigate the influence of air gap between fabric layers and human skin on protective performance of protective clothing against steam, three different fabric systems were selected and four levels of air gap, i.e., 0 mm, 6 mm, 12 mm, and 18 mm, were designed. Time to 2nd and 3rd burn degree, total absorbed energy and heat flux were recorded and analyzed to evaluate the impact of air gap on the protective performance. The results show that thermal protection is different for different fabric assemblies. If the fabric thickness is bigger and moisture barrier is arranged more close to the steam hazard, the fabric system provides higher thermal protection. Further, a significant relationship exists between the thermal protection against steam and air gap size. If the air gap size is higher than 12 mm, thermal protective performance against steam exhibits a significant increase. The analysis of heat flux curve during exposure and cooling phase can facilitate the further understanding of the heat and moisture transfer mechanism.

Key words: thermal protective clothing, air gap, steam hazard, protective performance, total absorbed energy

中图分类号: 

  • TS941.73

表1

单层面料的基本性能"

面料编号 织物类型 纤维成分 组织结构 厚度/mm 面密度/
(g·m-2)		 透气性/
(cm3·cm-2·s-1)
OS 外层 芳纶1313/芳纶1414(98/2) 斜纹 0.41 186.7 17.1
MB 防水膜 芳纶1313和聚四氟乙烯膜 水刺毡 0.69 106.7 0
CF 复合面料 芳纶1313/芳纶1414(98/2)和聚四氟乙烯膜 涂层 0.63 280.0 0
TL 隔热层 芳纶1313毡和基布 三维间隔 2.73 180.0 662.0

表2

面料系统的基本性能"

系统编号 系统组合 厚度/mm 面密度/(g·m-2)
S CF 0.63 280.0
D1 CF+TL 3.36 460.0
D2 OS+MB 1.13 293.3

图1

蒸汽防护测试仪"

表3

各面料系统不同空气层下的防护性能"

面料
系统		 二级烧
伤时
间/s		 方差/
s		 三级烧
伤时
间/s		 方差/
s		 总吸收
能量/
(kJ·m-2)		 能量
方差/
(kJ·m-2)
S 0.43 5.04 0.49 6.92 382.33 0.91
S+6 mm 0.26 5.50 0.22 7.56 356.40 9.33
S+12 mm 0.09 6.34 0.07 8.39 277.73 9.71
S+18 mm — NB — NB 146.65 0.07
显著性 ** ** **
D1 1.19 18.68 — NB 202.73 4.66
D1+6 mm 0.60 19.30 — NB 192.95 1.91
D1+12 mm 0.94 20.95 — NB 180.17 2.70
D1+18 mm — NB — NB 111.10 2.18
显著性 ** NS **
D2 0.16 4.96 0.52 6.97 417.93 12.53
D2+6 mm 0.50 5.84 0.72 8.26 391.87 10.41
D2+12 mm 0.45 9.50 0.80 12.50 317.20 12.41
D2+18 mm 0.25 14.71 0.99 20.78 225.13 14.69
显著性 ** ** **

图2

空气层厚度对面料二级烧伤时间的影响"

图3

空气层厚度对总吸收热量的影响"

图4

不同空气层厚度时面料系统S的热流量曲线"

图5

不同空气层厚度时面料系统D1的热流量曲线"

图6

不同空气层厚度时面料系统D2的热流量曲线"

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