中文摘要：

以正硅酸四乙酯为前驱体,制备出粒径20-100 nm的二氧化硅溶胶。用提拉法在玻璃基片上制备出氧化硅基多孔减反射膜,并研究了不同粒径的二氧化硅溶胶老化后溶胶胶粒的微观结构与相应的多孔氧化硅减反射膜微观孔结构的差异。结果表明,颗粒粒径约20nm的硅溶胶在老化过程中易团聚成较大的二次颗粒,形成结构疏松的氧化硅多孔减反射薄膜。镀有这种减反射膜的玻璃,其峰值透过率在波长510 nm处达到99.2%。

英文摘要：

The silica sols of particle size 20-100 nm were prepared using tetraethyl silicate as precursor.The porous silica antireflective coatings were prepared on the glass by the dip-coating method. The microstructure of sol particles with different particle size after aging and their influence on porous silica antireflective coating were investigated.Results show that the small silica colloid particles with size～20 nm reunit into large secondary particles during the aging process.The antireflective coating prepared of secondary particles has the desired loose structure and the peak transmittance of glass with the antireflective coating reaches 99.2%at 510 nm.