Enhanced Drag Reduction Performance of Nanocomposites: The Effects of Surface Modification of Nano Silica

Advanced Composites Letters

Article

Bing Li¹  Guicai Zhang²  Jijiang Ge²  Xuewu Wang³  Shuming Yin³  Xiaodong Dai⁴ 

[1] Advanced Materials Institute, Shandong Academy of Science, Jinan, Shandong, China, 250014;Post-Doctoral Working Station of University Science Park, China University of Petroleum, Donying, Shandong, China, 257000;Shengli College China University of Petroleum, Dongying, Shandong, 257061, China;Shengli College China University of Petroleum, Dongying, Shandong, 257061, China;Post-Doctoral Working Station of University Science Park, China University of Petroleum, Donying, Shandong, China, 257000;

关键词: nano silica;    surface modification;    nanocomposite;    drag reduction;    shear resistance;   

DOI  :  10.1177/096369351702600403

 received in 2017-04-25, accepted in 2017-06-15,  发布年份 2017

来源: Sage Journals

【 摘 要 】

In this paper, nanocomposite was synthesized with nano silica and poly-α-olefin, and the effects of surface modification to the nano silica on its drag reduction performance were investigated. The dosage coupling agent, Y-aminopropyltriethoxysilane, and the modification temperature were studied intensively through surface hydroxyl and oil adsorption analysis. The test results indicated that the hydroxyl number of the silica was decreased by Y-aminopropyltriethoxysilane modification, with improved lipophilicity and oil adsorption. At 50°C, the optimum Y-aminopropyltriethoxysilane dosages were 15% for Nano-Si-10, 5% for Nano-Si-20, and 10% for Degussa-R972. The modification significantly changed the nano silica surface properties and enhanced the interaction with poly-α-olefin. Through drag reduction and shear resistance tests by rotating disk 40 mins degradation and testing loop 2 times shearing, it was shown that the nanocomposite possessed good drag reduction and excellent shear resistance properties.

【 授权许可】

Unknown   
© 2017 SAGE Publications Ltd

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