Nanoscratch profiles of hybrid films based on (3-glycidoxypropyl)trimethoxysilane and modified with tetraethoxysilane

作者：Hu L^*; Zhang X; Huang Y

来源：Plastics Rubber and Composites, 2004, 33(9-10): 457-461.

DOI：10.1179/174328904X48505

• silsesquioxanes
• (3-glycidoxypropyl)trimethoxysilane
• tetraethoxysilane
• sol-gel process
• nanoindentation
• nanoscratch
• coefficient of friction

Silsesquioxanes (SSO) derived from the hydrolytic condensation of (3-glycidoxypropyl)trimethoxysilane (GPMS) and tetraethoxysilane (TEOS) were prepared by the sol-gel process. Hardness H and elastic modulus E of the SSO films modified with 5, 10, 15, 20, 25 and 30 wt-%TEOS contents were measured by the continuous stiffness measurement technique and the brittle index HIE for the films was calculated from the results. The nanoscratch testing was carried out to study the influence of the different TEOS contents of the coatings on the scratch-testing profiles, including the pre-scan, scratch-scan and post-scan profiles. The film containing 20 wt-%TEOS was found to have the best elastoplastic behaviour and scratch resistance, based on considerations including the baseline of the pre-scan profile, the depth of the scratch, the abrupt change in the scratching curve and the fluctuation and recovering characteristic for the post-scan profile.

• 出版日期2004
• 单位哈尔滨工业大学