中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (7): 180-185.doi: 10.16265/j.cnki.issn1003-3033.2020.07.027

• 职业卫生 • 上一篇    下一篇

消防服充填用弹性气凝胶球粒的力学性能

杨帆1, 鲁义1,2 副教授, 刘艺伦1, 施式亮1 教授, 王金鹏1, 李松徽1   

  1. 1 湖南科技大学 资源环境与安全工程学院,湖南 湘潭 411201;
    2 湖南科技大学 南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室,湖南 湘潭 411201
  • 收稿日期:2020-04-12 修回日期:2020-06-17 出版日期:2020-07-28 发布日期:2021-07-15
  • 作者简介:杨 帆 (1994—),女,山西宁武人,硕士研究生,主要研究方向为火灾科学与技术。E-mail:447250210@qq.com。
  • 基金资助:
    湖南省安全生产重点专项资金项目(湘财企指【2017】20号);湖南省自然科学基金资助(2019JJ50152)。

Mechanical properties of elastic aerogel spherules for fire-fighting clothes filling

YANG Fan1, LU Yi1,2, LIU Yilun1, SHI Shiliang1, WANG Jinpeng1, LI Songhui1   

  1. 1 School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China;
    2 Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan University of Science and Technology, Xiangtan Hunan 411201,China
  • Received:2020-04-12 Revised:2020-06-17 Online:2020-07-28 Published:2021-07-15

摘要: 为保护消防员在救援活动中免受打击伤害,以SiO2气凝胶粉末、无氨乳胶和水为原材料,制备一种用于充填消防服隔热内衬的弹性气凝胶球粒。首先,探究弹性气凝胶球粒的力学传导机制;然后,测试其宏观形貌和微观结构表征及比表面积;最后,在不同的压力下进行力学性能试验。结果表明:弹性气凝胶球粒的微观结构相比气凝胶粉末更为紧致;当单个弹性气凝胶球粒受力,压力达到2 kN时,样品局部开裂,传递的力在1—5圈逐渐减小,但到第4圈时传递的力明显变小;当弹性气凝胶球粒整体受力时,经15 kN的压力作用后没有开裂现象,得出消防服隔热内衬应该以正六边形为单元填充中心球和1—3圈球。

关键词: 消防服, 弹性气凝胶球粒, 微观结构, 力学性能, 充填方式

Abstract: In order to protect firemen from injuries in rescue activities, elastic aerogel spherules for thermal insulation lining filling of fire-fighting clothes were prepared with SiO2aerogel powder, ammonia free latex and water as raw materials. Firstly, their mechanical conduction mechanism was investigated. Then, macro morphology, microstructure characterization and specific surface area were measured. Finally, their mechanical properties were tested at different pressures. The results show that microstructure of elastic aerogel spherules was more compact than that of aerogel powder. When pressure of a single spherule reaches 2 kN, samples will be cracked partially, and forces transmitted decrease from circle 1 to 5, especially evident at 4th cycle. But spherules will not crack if they take pressure of 15 kN as a whole. It is found that insulation lining of fire-fighting clothes should be made up of a center spherule with regular hexagon and 1-3 circles of elastic aerogel spherules.

Key words: fire-fighting clothes, elastic aerogel spherules, microstructure, mechanical property, filling method

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