Experimental Study on Infrared Attenuation Characteristics of A Liquid Interference Material
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摘要:在丙二醇水溶液中添加TiO2纳米颗粒和表面活性剂，制备成相对均匀稳定的多相体系，经超声空气雾化形成微细气溶胶，通过实验研究了添加不同质量分数纳米TiO2和纳米石墨片对红外衰减特性的影响规律。结果表明：相对于基液，添加纳米TiO2能够有效降低红外辐射透过率，添加5.0 wt% TiO2纳米颗粒后3～5μm红外透过率降低39.5%，8～14μm红外透过率降低25.6%；在同样的颗粒质量浓度和喷雾压力下，相对于添加TiO2纳米颗粒，添加纳米石墨片形成气溶胶的红外衰减率在3～5μm波段有所降低，在8～14μm波段基本一致。
Abstract:A relatively uniform and stable multiphase system was prepared by adding titanium dioxide nanoparticles and surfactants to propylene glycol aqueous solution, then fine aerosols were formed by ultrasonic air atomization. The effects of adding different mass fractions of nano titanium dioxide and nano graphite on the infrared attenuation characteristics were studied experimentally. The results show that compared with the base solution, the addition of nano titanium dioxide can effectively reduce the infrared radiation transmittance, the addition of 5.0 wt% titanium dioxide nanoparticles can reduce the infrared transmittance of 3～5 microns by 39.5% and 8～14 microns by 25.6%. At the same particle mass concentration and spray pressure, the IR attenuation rate of aerosol formed by adding graphite nanoflakes is reduced in the 3～5μm band and basically unchanged in the 8～14μm band relative to adding TiO2 nanoparticles.
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