纳米SiO2／PMMA复合材料的光学性能  

Optical properties of nano-SiO_2/PMMA composite material

作　　者：崔运国[1,2] 陆春华[1] 张军[1] 许仲梓[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]南京工业大学理学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2012年第4期101-104,共4页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省自然科学基金资助项目(BK2010553)

摘　　要：以聚甲基丙烯酸甲酯(PMMA)为基体,通过原位复合的方法制备含纳米SiO_2的复合材料。用紫外-可见分光光度计(UVPC)和傅里叶红外光谱仪(FT-IR)研究复合材料的光谱特性。结果表明:当掺入少量纳米SiO_2时,复合材料的反射谱峰和透射谱峰均发生一定程度的红移;当纳米SiO_2含量超过一定量时,复合材料透过率显著降低。此外,依据Frrsnel's公式和Beer's定律计算了复合材料的光学常数。Poly （methyl methacrylate） （PMMA） doped nano-SiO2 were prepared by in situ polymeriza- tion. The absorption spectrum and reflection spectrum of composite materials were recorded by ultraviolet- visible spectrophotometer （UVPC） and Fourier transform infrared spectroscopy （FT-IR） spectrophotome- ter independently. Results showed that the reflect spectrum and the transmission spectrum had a obvious pick shift to a long wavelength. When the content of doped nano-SiO2 exceeded a certain amount, the transmission would decreased rapidly. The optical constants of composite material were calculated based on the Fresnel＇s formulae and the Lambert-Beer＇s law.

关 键 词：复合材料 原位 光学常数 

分 类 号：TB33[一般工业技术—材料科学与工程]