| Mechanical properties of polymer-ceramic nanocomposite coatings by depth-sensing indentation.: An article from: Polymer Engineering and Science |  | Authors: Jiakuan Sun, Lorraine F. Francis, William W. Gerberich
Publisher: Society of Plastics Engineers, Inc.
Category: Book
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Pages: 22
Publication Date: February 1, 2005
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on February 1, 2005. The length of the article is 6334 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: The mechanical properties of antimony-doped tin oxide (ATO) nanoparticle/poly (vinyl acetate-co-acrylic) (PVAc-co-acrylic) coatings with various ATO contents were investigated using depth-sensing indentation. These coatings were prepared from aqueous dispersions of ATO and PVAc-co-acrylic latex. Three types of methods, including a prolonged load holding time, analysis of the pull-off portion of the unloading curve, and dynamic indentation, were used to characterize the mechanical properties of these composite coatings. As compared to dynamic indentation, quasistatic conventional indentation even with a prolonged load holding time and analysis of the pull-off portion of unloading curves generate more scattered coating modulus data. This is due to the effect of creep deformation and inconsistency of the pull-off portion dimension, respectively. The results obtained using dynamic indentation are more reliable because the technique minimizes the effect of creep deformation using a combination load including static and dynamic components. The dynamic indentation results indicate that the addition of the ATO nanoparticles made the composite coatings stiffer and more elastic solid-like. For example, the storage indentation modulus of the PVAc-co-acrylic coating is ~1 GPa and tan [delta] is ~1.6; the addition of 0.50 volume fraction of ATO increased the modulus to ~5 GPa and reduced the tan [delta] to ~0.01. POLYM. ENG. SCI., 45:207-216, 2005. [c] 2005 Society of Plastics Engineers
Citation Details
Title: Mechanical properties of polymer-ceramic nanocomposite coatings by depth-sensing indentation.
Author: Jiakuan Sun
Publication: Polymer Engineering and Science (Refereed)
Date: February 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 2 Page: 207(10)
Distributed by Thomson Gale
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