新型高效无氟泡沫灭火剂的制备及其性能表征
Preparation and characterization of a new high efficiency fluorine-free foam extinguishing agent
奚志林 1张雪松 1钱凯2
作者信息
- 1. 天津理工大学 环境科学与安全工程学院,天津 300384
- 2. 天津理工大学 保卫处,天津 300384
- 折叠
摘要
提出了一种由黄原胶、纳米二氧化硅颗粒和复配表面活性剂组成的新型环保型泡沫灭火剂,用于迅速扑灭易燃液体火灾.利用荧光分光光度计、液滴形状分析仪、润滑油抗泡沫特性测试仪以及双目透射偏光显微镜等试验研究了泡沫灭火剂的表面性能、聚集特性和发泡行为.结果表明,黄原胶以及二氧化硅纳米颗粒的加入使得 10 min之内的泡沫稳定性保持在85%以上.通过泡沫性能测试,配比出最优异的泡沫性能,初始泡沫体积为905 mL,25%排水时间为300 s,10 min之内的排水量为105 mL,显著提升了泡沫的起泡性能和泡沫稳定性.随后使用该配方进行小型灭火试验,灭火时间为18 s,抗烧时间为650 s.
Abstract
A new environment-friendly foam extinguishing agent composed of xanthan gum,nano-silica particles and compound surfactants is proposed to quickly extinguish flammable liquid fires.The surface properties,aggregation characteristics and foaming behavior of foam extinguishing agent were studied by fluorescence spectrophotometer,droplet shape analyzer,lubri-cant anti-foam property tester and binocular transmission polariza-tion microscope.The results showed that the stability of the foam remained above 85%with the addition of xanthan gum and silica nanoparticles.Through the foam performance test,the best foam performance is matched,the initial foam volume is 905 mL,the 25%drainage time is 300 s,and the displacement is 105 mL within 10 min.The foaming performance and foam stability of the foam are significantly improved.Subsequently,by using the for-mula to carry out small fire extinguishing experiments,the fire ex-tinguishing time is 18 s,and the reignition time is 650 s,this fire extinguishing agent has the potential for fire protection applica-tions.
关键词
无氟泡沫/纳米二氧化硅/黄原胶/芘荧光探针/泡沫性能Key words
fluorine-free foam/nano-silica/xanthan gum/pyrene fluorescent probe/foam property引用本文复制引用
基金项目
国家自然科学基金面上项目(52274223)
国家自然科学基金面上项目(52074192)
天津市科技局重大专项(18ZXAQSF00020)
出版年
2024
NETL
NSTL
维普
万方数据