Effect of Addition of Nano Silica on Modulus of an Acrylic/Melamine Automotive Topcoat

Abstract:

In the present study, the influence of addition of various loads of hydrophobic nano silica on modulus of an acrylic melamine automotive topcoat was investigated. The results indicated that addition of hydrophobic nano silica to acrylic melamine decreased its Young’s modulus. The same behavior was observed for nano indentation modulus just at low nano silica content. This property was increased at high nano silica content. Poor interaction between nano particles / acrylic melamine and ball bearing effects of nano particles were used to explain decrease in modulus. Increase in nano indentation modulus was attributed to particle flocculation.

• Periodical: Advanced Materials Research (Volumes 488-489)
• Pages: 915-918
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.488-489.915
• Online since: March 2012
• Authors: Nargess Tahmassebi
• Keywords: Acrylic Melamine, Automotive Topcoat, Ball Bearing Effect, Modulus, Nano Silica

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