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 is firstly presented.
本文主要讨论氧化锌镀膜光纤声光相位调制器。
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。