化工学报2026，Vol.77Issue(2)：1033-1044,12.DOI:10.11949/0438-1157.20250871
干水材料抛撒药剂的性能及应用
Performance and application of specialized dry water material spraying agents
摘要
Abstract
Explosive dispersion of dry water for fire suppression represents a novel extinguishing method.Achieving efficient and uniform dispersion of the dispersing agent without disrupting the microscopic structure of the dry water material constitutes one of the key technical challenges in this field.This study employs dry water as the extinguishing agent,utilizing ultrasonic mixtures of polyvinylidene fluoride(PVDF)with varying mass fractions of Al/KIO4 as the dispersing agent.The microstructure of Al/KIO4-PVDF was characterized via SEM,TEM,XRD,and EDS.The thermal stability,burning rate,gas production performance,and sensitivity of Al/KIO4-PVDF were tested using differential calorimetry,open-environment combustion experiments,PMMA tube combustion experiments,closed-circuit explosion experiments,and electrostatic sensitivity experiments.A dry water extinguishing experiment was also conducted.The results indicate that PVDF coating the Al exterior and filling the Al/KIO4 interface enables controllable energy release.Optimal performance occurs at a 95∶5 Al/KIO4 to PVDF mass ratio,achieving 44.7%,33.7%,and 32.5%increases in burning rate,peak pressure,and pressure rise rate compared to pure Al/KIO4.This dispersant did not disrupt the core-shell structure of the dry gel.The dispersal of the dry gel demonstrated high extinguishing efficiency:750 mg of propellant applied to 500 g of gellan gum dry water extinguished a 20 cm n-heptane flame in an oil pan within only 65 ms.关键词
制备/干水/化学分析/安全Key words
preparation/dry water/chemical analysis/safety分类
化学化工引用本文复制引用
杨耀勇,汪泉,李瑞,徐建设,冯鼎玉,胡彬..干水材料抛撒药剂的性能及应用[J].化工学报,2026,77(2):1033-1044,12.基金项目
安徽省重点研究与开发计划社会领域项目(2023g07020002) （2023g07020002）
