疏水改性纳米氧化镁对短氟碳链泡沫性能影响  

Effect of hydrophobic modified magnesium oxide nanoparticles on the properties of short fluorocarbon chain foam

作　　者：欧红香[1] 闵政 薛洪来 曹海珍 毕海普[1] 王钧奇 OU Hongxiang;MIN Zheng;XUE Honglai;CAO Haizhen;BI Haipu;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9期5177-5184,共8页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(22378028,21878026);江苏省高等学校基础科学(自然科学)研究面上项目(22KJB620002,23KJD530001);2021年江苏省科技副总项目(FZ20211438);2021年江苏省研究生工作站项目(2021-187)。

摘　　要：为了解决短氟碳链泡沫稳定性差的缺点,采用硬脂酸对氧化镁纳米颗粒(MNPs)疏水改性得到不同水接触角的G-MNPs,研究疏水改性MNPs对短氟碳链泡沫性能和灭火性能的影响。采用硬脂酸对MNPs分别改性60min、90min、120min和150min,测试了G-MNPs表面形态、粒径分布、疏水性、热稳定性以及溶液分散度,研究了疏水改性对泡沫稳定性、发泡能力、泡沫粗化、灭火性能和抗烧性能等的影响。结果表明,硬脂酸疏水改性时间为120min时,改性MNPs水接触角最大,达到138.4°;G-MNPs表面形貌粗糙度增加,颗粒粒径增大,高温下热稳定性良好;疏水改性对泡沫溶液表面张力和黏度几乎没有影响;疏水角为90.0°时,G-MNPs泡沫溶液发泡性能、稳定性能、灭火性能、抗烧性能达到最佳。In order to solve the problem of poor stability of short fluorocarbon chain foam,G-MNPs with different water contact angles were obtained by hydrophobic modification of magnesium oxide nanoparticles(MNPs)with stearic acid.The effects of hydrophobic modified MNPs on the performance and fire extinguishing performance of short fluorocarbon chain foam were studied.MNPs were modified by stearic acid for 60min,90min,120min and 150min,respectively.The surface morphology,particle size distribution,hydrophobicity,thermal stability and solution dispersion of the modified MNPs were tested.The effects of hydrophobic modification on foam stability,foaming ability,foam coarsening,fire extinguishing performance and burning resistance were studied.The results showed that when the hydrophobic modification time of stearic acid was 120min,the water contact angle of modified MNPs was the largest,reaching 138.4°.The surface roughness of the modified MNPs increased,the particle size increased,and the thermal stability was good at high temperature.Hydrophobic modification had little effect on the surface tension and viscosity of the foam solution.When the hydrophobic angle was 90.0°,the foaming performance,stability,fire extinguishing performance and burning resistance of the modified MNPs foam solution were the best.

关 键 词：硬脂酸 疏水改性 纳米氧化镁 短氟碳链泡沫 灭火性能 

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]