纳米碳纤维/聚(氨酯-酰亚胺)复合泡沫的制备及其吸波吸声性能研究  

Preparation and Absorbing Properties of Carbon Nanofibers / Poly( urethane-imide) Composite Foam

作　　者：翟彤[1] 周成飞[1] 曹巍[1] 王连才[1] 曾心苗[1] 

机构地区：[1]北京市射线应用研究中心,辐射新材料北京市重点实验室,北京100015

出　　处：《材料保护》2013年第S2期123-124,共2页Materials Protection

摘　　要：以性能优异的聚(氨酯-酰亚胺)(PUI)为基材,利用纳米碳纤维的优良性能,用预分散法和一步发泡方法制备了纳米碳纤维/PUI复合泡沫,并对其性能进行了测试分析。结果表明:制得的纳米碳纤维/PUI复合泡沫具有良好的吸波性能,在2~18GHz内呈现很强的吸收,其最大反射率可达-34.1dB。另外,还具有良好的吸声性能,在125~4 000 Hz内的平均吸声系数达到0.39(驻波管法测定)。Carbon nanofibers / poly( urethane-imide)( PUI) composite foams were prepared by pre-dispersed and one-step foaming method,using PUI as substrate and carbon nanofibers as filler. The sound and microwave absorption properties of the composite foam were analyzed. The results show that,carbon nanofibers / PUI composite foams have good microwave absorbing properties,showing a strong absorption in the range of2 ~18 GHz,the maximum reflectivity is up to-34.1dB. In addition,but also have good sound absorption performance,the average sound absorption coefficient in the range of125 ~4000 Hz reached 0.39( Standing Wave Tubes method).

关 键 词：聚(氨酯-酰亚胺) 碳纳米纤维 复合泡沫 吸波 吸声 

分 类 号：TB383.4[一般工业技术—材料科学与工程]