含能材料
含能材料
함능재료
ENERGETIC MATERIALS
2009年
6期
708-712
,共5页
代梦艳%胡碧茹%吴文健%WU Wen-jian
代夢豔%鬍碧茹%吳文健%WU Wen-jian
대몽염%호벽여%오문건%WU Wen-jian
军事化学与烟火技术%造雾剂%燃烧%热分析%凝结核
軍事化學與煙火技術%造霧劑%燃燒%熱分析%凝結覈
군사화학여연화기술%조무제%연소%열분석%응결핵
military chemistry and pyrotechnics%fog aerosol%combustion%thermal analysis%condensation nucleus
通过高速摄影技术拍摄造雾剂燃烧过程、利用热失重法(TG)、差示扫描量热法(DTA)、扫描电子显微镜(SEM)技术分析造雾剂的燃烧过程及其对凝结核生长行为的影响.测试结果和理论计算结果表明,造雾剂燃烧后生成携带高温凝结核的热气团,热气团上升过程中其内部温度和压力迅速下降.TG、DTA和SEM分析表明,造雾剂燃烧反应后产生的凝结核主要组分为NaCl,粒度分布范围为0.2~1μm.热气团在膨胀冷却过程中温度和压力瞬间变化而造成的巨大的过饱和度对凝结核的生长过程起到关键作用.
通過高速攝影技術拍攝造霧劑燃燒過程、利用熱失重法(TG)、差示掃描量熱法(DTA)、掃描電子顯微鏡(SEM)技術分析造霧劑的燃燒過程及其對凝結覈生長行為的影響.測試結果和理論計算結果錶明,造霧劑燃燒後生成攜帶高溫凝結覈的熱氣糰,熱氣糰上升過程中其內部溫度和壓力迅速下降.TG、DTA和SEM分析錶明,造霧劑燃燒反應後產生的凝結覈主要組分為NaCl,粒度分佈範圍為0.2~1μm.熱氣糰在膨脹冷卻過程中溫度和壓力瞬間變化而造成的巨大的過飽和度對凝結覈的生長過程起到關鍵作用.
통과고속섭영기술박섭조무제연소과정、이용열실중법(TG)、차시소묘량열법(DTA)、소묘전자현미경(SEM)기술분석조무제적연소과정급기대응결핵생장행위적영향.측시결과화이론계산결과표명,조무제연소후생성휴대고온응결핵적열기단,열기단상승과정중기내부온도화압력신속하강.TG、DTA화SEM분석표명,조무제연소반응후산생적응결핵주요조분위NaCl,립도분포범위위0.2~1μm.열기단재팽창냉각과정중온도화압력순간변화이조성적거대적과포화도대응결핵적생장과정기도관건작용.
By using of high-speed photograph techniques,thermogravimetric analysis(TC),differential thermal analysis(DTA)and scanning electron microscope(SEM),the combustion process of fog aerosol and formation of condensation nucleus were investigated.Results show that the high temperature and pressure air mass with a large amount of high temperature condensation nucleus is produced after the combustion of fog aerosol,and the temperature and pressure decrease rapidly with the air mass ascending.The particle size distribution of condensation nucleus is 0.2-1μm and its main component is NaCl.The growing process of condensation nucleus and the forming of fog droplet are related with the supersaturation produced by the cooling and expanding of the air mass.