A5023473909- Fire dynamics and safety research
- Flame retardant materials and properties
- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Combustion and Detonation Processes
- Advanced Battery Materials and Technologies
- Thermal and Kinetic Analysis
- Surface Modification and Superhydrophobicity
- Fire Detection and Safety Systems
- Fire effects on ecosystems
- Inorganic Fluorides and Related Compounds
- Nanomaterials for catalytic reactions
- Advanced battery technologies research
- Synthesis and properties of polymers
- Vehicle emissions and performance
- Gold and Silver Nanoparticles Synthesis and Applications
- Iron oxide chemistry and applications
- Electric Vehicles and Infrastructure
- Aerogels and thermal insulation
- Energetic Materials and Combustion
- Mesoporous Materials and Catalysis
- Environmental Impact and Sustainability
- Advanced Sensor Technologies Research
- Risk and Safety Analysis
- Per- and polyfluoroalkyl substances research
University of Science and Technology of China
2019-2024
Chinese Academy of Sciences
2023
State Key Laboratory of Fire Science
2019-2023
Shaanxi Normal University
2006-2007
Safety issue of lithium-ion batteries (LIBs) is always a concern. We have studied the inhabitation on thermal runaway (TR) and propagation 18,650 LIBs in an enclosed space systematically. at 70% state charge are chosen for testing. Four fire extinguishing agents applied LIB arrays 20 s, inhibiting effects different. The cooling efficiency varies with surface temperatures LIBs. Water spray has highest inhibits TR among successfully. Three undergo releasing ABC ultrafine dry powder. BC powder...
Flowability greatly affects the application of ultrafine dry powder fire extinguishing systems, while hydrophobicity and acute inhalation toxicity are concerns for agents. In present study, we examined impact hydrophobic fumed silica on flow properties ammonium dihydrogen phosphate as base. Our findings revealed that incorporating 6 wt.% resulted in optimal flowability, accompanied by a angle 126.48°. The excessive inclusion impeded within particles. Furthermore, investigations indicated...
Abstract Sodium bicarbonate and potassium are commonly used as the bases of dry powder fire extinguishing agents. However, choices particle diameter base still not obvious, bringing difficulties to design Through study on thermal decomposition kinetics, it was found that smaller size, faster rate For instance, if D 90 sodium is reduced from 46.2 1 μm, triples. As determined by experiments, residues after a could be bicarbonates, carbonates, mixtures. The residue solutions' pH shows...
Functionalized sodium bicarbonate (FSB) powder with hydrophobicity and oleophobicity may provide a new solution to the increasingly severe aircraft engine fires. A one-step way prepare hydrophobic oleophobic powders by gel-sol-gel method was developed. Perfluoro copolymer gels were synthesized PFEA (2-(perfluorooctyl) ethyl acrylate), MMA (methyl methacrylate) HEMA (N-(2-Hydroxyethyl) acrylamide). The sol-forming properties of five different ratios investigated. As proportion increased,...
Ultra-fine powder extinguishing agent (UPEA) concentration measurement is essential for evaluating the validity of aircraft nacelle fire system. Based on Beer-Lambert law, influence contamination, ambient light, and other factors signal during high-concentration by extinction method has been analyzed. We proposed a correction model relationship between transmittance high mass powder. An optical fiber UPEA device based developed. Meanwhile calibration test platform occurrence stable uniform...
Ahstract-A synthesized fluorinated acrylate copolymer containing silanol groups was used to encapsulate ammonium polyphosphate together with tetratethoxysilane by sol-gel method prepare the modified phosphate that inhibits reignition of oil pool fires. The anti-reignition dry powder particle grafted fluorocarbon long-chain and obtained low surface tension, which contributes good properties hydrophobicity oleophobicity. from FA, MMA, KH570 where FA introduced provided a group for bonding...
细碳酸氢钠作为一种粉末抑制剂，通常用于抑制火灾/爆炸。本工作旨在探讨细小碳酸氢钠（D 90=1μm)在不同压力下,为抑爆提供精确的动力学参数。首先，恒定升温速率（10°C/min）下的热曲线表明，随着压力的增加，起始分解温度升高，最大质量损失率降低。接下来通过等温法，发现每个恒定加热步骤的曲线线性下降，并计算分解速率。热分解动力学通过Arrhenius方程计算。值得注意的是，压力升高通过降低预因子影响细小碳酸氢钠的热分解，对活化能影响不大。不同压力下的热分解模型均遵循化学反应机理函数F1（ [[EQUATION]] ). 本文提供了对高压场景下碳酸氢钠分解路径的更清晰理解，获得的动力学参数将直接用作数值模拟的输入参数。
The spindle-shaped β-FeOOH/polyacrylonitrile-amidoxime (PAN-amidhydrazone)/silver composite particles with a stable core-shell structure were successfully fabricated in the mixed solvent of dimethylformamide (DMF) and methanol using seed-mediated growth technique, where metal silver nanoparticles tethered on β-FeOOH served as nucleation sites for nanoshell overlayer. closed shell was finally formed after seed catalyzed growing process repeated several cycles. results transmission electron...