The property and preparation of three kinds of environmental high barrier packaging materials such as poly(ethylene-2,6-naphthalenedicarboxylate),poly(vinyl alcohol) and silica plating film are introduced,and the domestic progress,for example,the progress of melting properties of PEN/PET,compound and modifying PVA and SiOx prepared by using different plating methods are reviewed in this paper.
综述了几种环境友好的高阻隔包装材料聚2,6-萘二甲酸乙二酯(PEN)、聚乙烯醇(PVA)、氧化硅蒸镀薄膜的性能和制备工艺,以及PEN结合PET的共混特性、PVA复合及改性和利用不同的蒸镀技术蒸镀制得SiOx薄膜等一些国内的研究进展,并指出随着环境的恶化,加强对环保协调、性能优良的高阻隔包装材料的开发是当今阻隔材料的研究重点。
The geometry of optical fiber using ZnO coating has firstly been presented and the basic theory of piezoelectric resonator of this geometry has been analyzed.
首先介绍了氧化锌镀膜光纤的几何结构,分析了此几何结构压电声光振荡的基本原理,给出了光纤声光相位调制器的等效网络模型,然后根据此模型推出了声光压电层反射系数S11,并按预设参数进行了计算机模拟。
The geometry of optical fiber using ZnO coating presented and the basic theory of piezoelectric resonator of this geometry is analyzed.
介绍了氧化锌镀膜光纤的几何结构 ,分析了此几何结构压电声光振荡的基本原理 ,给出了光纤声光相位调制器的等效网络模型 ,根据此模型得到了声光压电层反射系数 ,并按实际参数进行了计算机模拟计算。
Electrically induced visible light-emitting PS device with structure of ITO/PS/p-Si/Al were fabricated by means of evaporation-anodic oxidation method.
采用蒸镀-阳极氧化法制备了多孔硅异质结(ITO/PS/p-Si/Al)电致发光器件,在7。
