纳米氢氧化镁对无氟泡沫灭火剂性能的影响  

Effect of nano-magnesium hydroxide on the performance of fluorine-free foam extinguishing agent

作　　者：陈合敏 欧红香[1] 薛洪来 闵政 曹海珍 王钧奇 CHEN Hemin;OU Hongxiang;XUE Honglai;MIN Zheng;CAO Haizhen;WANG Junqi(School of Safety Science and Engineering,Changzhou University,Changzhou 213164,Jiangsu,China;Jiangsu Suolong Fire Science and Technology Shares Limited Company,Taizhou 225753,Jiangsu,China)

机构地区：[1]常州大学安全科学与工程学院,江苏常州213164 [2]江苏锁龙消防科技股份有限公司,江苏泰州225753

出　　处：《化工进展》2024年第11期6390-6396,共7页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(22378028);江苏省产学研合作项目(BY20221168);江苏省高等学校基础科学(自然科学)研究面上项目(22KJB620002);2022年江苏省研究生教育教学改革重点课题(苏学位字函[2022]4号);常州大学教育教学研究重点课题(GJY2021005)。

摘　　要：以聚醚改性三硅氧烷、CTAB为表面活性剂,以纳米氢氧化镁、黄原胶为稳泡剂制备无氟泡沫灭火剂,采用L9(34)正交表分析泡沫溶液表面张力、发泡性能及稳泡性能,选用正交优化后的泡沫配方进行灭火和抗烧实验研究。研究结果表明:复配体系泡沫溶液黏度较低,在1.00~1.21mPa·s之间;由质量分数为0.8%的CTAB与12%的聚醚改性三硅氧烷组成的泡沫溶液表面张力最低,为19.73mN/m;聚醚改性三硅氧烷与CTAB协同作用,增强了溶液发泡性能与泡沫稳定性,当纳米氢氧化镁的质量分数为0.5%时,溶液的发泡高度最优,达到207mm,25%析液时间从205s增长到216s;用质量分数为1.2%CTAB、12%聚醚改性三硅氧烷、0.5%纳米氢氧化镁及0.05%黄原胶制备的泡沫灭火剂扑灭油盘面积为0.25m^(2)的正庚烷火,灭火时间为107s,抗烧时间达到372s。In this paper,polyether-modified trisiloxane and CTAB as surfactants,and nano-magnesium hydroxide and xanthan gum as stabilizing agent were prepared for preparation of fluorine-free foam fire extinguishing agent.L9(34)orthogonal table was used to analyze surface tension,foaming performance and foam stability of foam solution,and orthogonally optimized foam formula was selected for fire fighting and anti-burning experimental research.The results showed that the viscosity of the compound system was low between 1.00—1.21mPa·s.The foam solution composed of CTAB with mass fraction of 0.8%and 12%polyether-modified trisiloxane had the lowest surface tension of 19.73mN/m.Polyether-modified trisiloxane cooperated with CTAB to enhance the solution foaming performance and foam stability.When the mass fraction of nanometer magnesium hydroxide was 0.5%,the solution foaming was highly optimal,reaching 207mm,and the 25%solution time increased from 205s to 216s.The foam fire extinguishing agent prepared with the mass fraction of 1.2%CTAB,12%polyether-modified trisiloxane,0.5%nano-magnesium hydroxide and 0.05%xanthan gum was used to extinguish the n-heptane fire with the oil pan area of 0.25m^(2),and the fire extinguishing time was 107s with the anti-burning time of 372s.

关 键 词：纳米氢氧化镁 表面活性剂 泡沫稳定性 灭火性能 无氟泡沫灭火剂 

分 类 号：X937[环境科学与工程—安全科学] TQ322[化学工程—合成树脂塑料工业]