Aerosol Generation of Nonspherical Particles by Desublimation of Copper Phthalocyanine

Aerosol Generation of Nonspherical Particles by Desublimation of Copper Phthalocyanine
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通过铜酞菁的凝华产生非球形颗粒的气溶胶

DOI:
10.1002/ceat.201800208
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发表时间:
2019
影响因子:
2.1
通讯作者:
Antonyuk
Antonyuk
中科院分区:
工程技术4区
文献类型:
--
作者:
Dillenburger;Hellmann;Hillemann;Stintz;Ripperger;Antonyuk

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基于酞菁铜在绝热冷却过程中的凝华现象,研制了一种新型的非球形气溶胶发生器。采用刷式分散器,将铜酞菁粉末定量给料并分散在氮气流中,并在管式炉中升华。在炉子下游,由于拉瓦尔喷嘴中的材料的绝热膨胀和凝华,形成新的颗粒。所产生的颗粒,其特征在于采用扫描迁移率粒度仪和气溶胶颗粒质量分析仪,以确定的尺寸分布和动态形状因子。对于这里检查的发生器的操作参数,生成具有在30和600 nm之间的迁移率直径的颗粒。通过扫描电子显微镜分析证实了颗粒的动态形状因子的测量值。
A novel generator for a defined test aerosol consisting of nonspherical particles was developed based on the desublimation of copper phthalocyanine during adiabatic cooling. Employing a brush disperser, copper phthalocyanine powder is dosed and dispersed in a nitrogen flow and sublimated in a tube furnace. Downstream the furnace new particles are formed due to the adiabatic expansion and the desublimation of the material in a laval nozzle. The generated particles were characterized employing a scanning mobility particle sizer and an aerosol particle mass analyzer to determine the size distribution and the dynamic shape factor. For the operating parameters of the generator examined here, particles with a mobility diameter between 30 and 600 nm were generated. The measured values for the dynamic shape factor of the particles were confirmed by scanning electron microscopy analysis.
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