核径迹-银纳米颗粒改性的CR-39材料制备及其抗红外反射性能

本工作用中国原子能科学研究院HI-13串列加速器提供的³²S离子辐照CR-39样品，产生潜径迹，用紫外灯敏化后在氢氧化钠溶液中蚀刻，使潜径迹成为具有一定孔径的孔（洞）。用真空充氩气的方法在核径迹孔样品表面镀银纳米颗粒。电子扫描电镜图片显示，氩气压强在50～100Pa之间时，银纳米颗粒直径约为60～100nm，纳米颗粒形成球状团簇的大小为3μm。在红外光区（2.5～25μm）测量镀膜样品的反射率，测量结果表明，CR-39表面的核径迹与银纳米颗粒能将红外光区（8.0～25μm）的反射率降低到0.9%，与未经改性的CR-39比较，减低了82%。在5.8和7.8μm处，CR-39的本底反射率分别从9.0%和130%降低到了5.0%和6.8%。

Preparation and Anti-infrared Property of CR-39 Modified With Nuclear Tracks and Silver Nano-particles

CR-39 samples were irradiated with sulphur ions from HI-13 tandem accelerator to produce latent tracks at China Institute of Atomic Energy.Ultraviolet light with wavelength 360 nm was used to sensitize the bombarded CR-39 samples before chemical etching by NaOH solution.The latent tracks were then developed into pores or holes with certain diameter.Silver black was coated on the surface of etched CR-39 using evaporation in inert gas argon ambience.The SEM images indicate that the silver nano-particles are 6...