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垂直沉积干燥薄膜的剪切模量粒径依赖研究

DOI: 10.6052/1000-0992-20120104, PP. 27-30

Keywords: 干燥薄膜,垂直沉积法,剪切模量,粒径依赖性

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Abstract:

作者前期在关于胶体颗粒粒径对干燥薄膜的初始裂纹形成影响的研究论文中报道了对于相同厚度薄膜的初始裂纹,其裂纹间距随颗粒粒径的增大而减小.本文从这一实验现象出发,针对垂直沉积干燥薄膜的剪切模量进行了进一步的理论分析.结果表明此薄膜的剪切模量同样具有粒径依赖的特性.同时,通过与颗粒聚集体材料剪切模量的粒径依赖性的比较,我们发现二者有所差异,这表明干燥薄膜的剪切模量不仅仅由其固相部分决定,其液相部分的影响不可忽视.

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