消融材料约束电爆石墨粉试验研究
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摘要
用具有消融作用的聚乙烯材料制作约束管,以天然石墨粉为原料进行电爆试验。结果表明,约束管对电爆炸石墨粉产物具有良好的高温调控和约束效果;石墨粉发生电爆炸,制备产物中存在球形颗粒、多面体颗粒和片层及褶皱状片层的石墨烯。分析认为,球形颗粒是由爆炸瞬间产物中液相凝固形成;多面体颗粒是气相粒子凝华形成;而爆炸瞬间产生强大的冲击波,使石墨发生层状剥离后形成石墨烯。提高沉积在粉末上的能量密度,制备产物中颗粒状减少,片层状增多。
The electrical explosion test for a natural graphite powder as raw materials was carried out through a constrained tube made of polyethylene material under high energy. The results show that the constrained tube has a good effect of high temperature control and constraint on electrical explosion graphite powder. The spherical particles, polyhedral particles, sheets and wrinkled graphene sheets are obtained in the products. The analysis believes that the liquid phase components that exist in the explosion instant products coagulated to form spherical particles and vapor phase sublimated to polyhedral particles, while the shock wave generated with explosion instant stripped graphite with several layers to form graphene. The particle contents decreased and sheet contents increased in the products when increasing the energy density deposited on the powders.
The electrical explosion test for a natural graphite powder as raw materials was carried out through a constrained tube made of polyethylene material under high energy. The results show that the constrained tube has a good effect of high temperature control and constraint on electrical explosion graphite powder. The spherical particles, polyhedral particles, sheets and wrinkled graphene sheets are obtained in the products. The analysis believes that the liquid phase components that exist in the explosion instant products coagulated to form spherical particles and vapor phase sublimated to polyhedral particles, while the shock wave generated with explosion instant stripped graphite with several layers to form graphene. The particle contents decreased and sheet contents increased in the products when increasing the energy density deposited on the powders.
引文
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[2]Dai B,Fu L,Liao L,et al.High-quality single-layer graphene via reparative reduction of graphene oxide[J].Nano Research,2011,4(5):434-439.
[3]文潮,孙德玉,李迅,等.炸药爆轰法制备纳米石墨粉及其在高压合成金刚石中的应用[J].物理学报,2004,53(4):1260-1264.
[4]彭楚才,王金相,童宗保,等.电爆炸法制备纳米粉体材料的研究进展[J].材料科学与工程学报,2013,31(4):608-613.
[5]朱亮,张周伍.电爆技术用于超细粉制备和表面喷涂的研究进展[J].材料导报,2005,19(12):76.
[6]毕学松,朱亮.气体放电式丝电爆方法制备纳米铜粉[J].粉末冶金工业,2012,22(4):23-25.
[7]王永,朱亮,范一飞.自动连续丝电爆法制备纳米镍粉[J].中国粉体技术,2014,20(6):52-55.
[8]朱亮,张有国,毕学松.腔内约束电热爆喷涂涂层的形成[J].焊接学报,2012,33(2):77-80.
[9]高扬,张云霞,杨志懋.水下电爆炸法制备碳纳米材料[A].第七届中国功能材料及其应用学术会议论文集[C].长沙:2010,203-205.
[10]朱亮,石茂虎,王永.管约束WC粉末电爆喷涂涂层的形成[J].稀有金属材料与工程,2014,43(4):968-972.
[11]成剑,栗保明.消融控制电弧等离子体发生器中毛细管消融模型研究[J].自然科学进展,2002,12(8):816-820.
[12][英]费拉里(Ferrari A C),罗伯逊(Robertson J)编,潭平恒,李峰,成会明,译.炭材料的拉曼光谱-从纳米管到金刚石[M].北京:化学工业出版社,2007:4-5.
[13]文潮,李迅,孙德玉,等.炸药爆轰法制备的纳米石墨粉的拉曼光谱[J].光谱学与光谱分析,2005,25(1):54-57.
[14]李兴鳌,王博琳,刘忠儒.石墨烯的制备、表征与特性研究进展[J].材料导报,2012,26(1):61-65.
[15]吴娟霞,徐华,张锦.拉曼光谱在石墨烯结构表征中的应用[J].化学学报,2014,72(3):301-318.