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Vol. 12, Special Issue, October 2011, pp.53-65




The Mechanical and Tribological Properties of Epoxy Nanocomposites with WS2 Nanotubes


1, 2 Elad ZOHAR, 1 Sharon BARUCH, 1 Mark SHNEIDER, 1 Hanna DODIUK, 1 Samuel KENIG, 2 H. Daniel WAGNER, 3 Alla ZAK, 4 Alex MOSHKOVITH,
4 Lev RAPOPORT, 2 Reshef TENNE

1 Shenkar College of Engineering & Design, Ramat Gan 52526, Israel

2 Department of Materials and Interfaces, Weizmann Institute, Rehovot, 76100, Israel

Tel.: +972-8-9342394, fax: +972-8-9344138

3 “NanoMaterials Ltd.”, 18 Einstein St., Weizmann Science Park,

P.O. Box 4088, Nes Ziona 74140, Israel

Tel.: 972-8-9302671, fax: 972-99302675

4 Department of Science, Holon Institute of Technology,

P.O. Box 305, 52 Golomb St., Holon 58102, Israel

E-mail: Reshef.Tenne@weizmann.ac.il, alla@apnano.com



Received: 15 June 2011   /Accepted: 18 July 2011   /Published: 31 October 2011

Handbook of Laboaratory Measurements book


Abstract: It is now possible to synthesize inorganic nanotubes (INT) of WS2 in a pure phase and substantial amounts. Due to their crystalline perfection, they are characterized by excellent mechanical behavior. This study is dedicated to the investigation of the effect of INT-WS2 on the mechanical, thermal, adhesion and tribological properties of epoxy based nanocomposites. Various concentrations up to 1.0 wt% of the INT were added to the epoxy matrix. First a method was developed to mix the nanotubes in the epoxy resin matrix. A combination of both magnetic stirring and ultrasonic mixing was used. The adhesion, fracture toughness and strain energy release rate were studied. The INT-WS2 were found to significantly improve all these properties. The wear of the nanotubes-reinforced epoxy was eight-times lower than that of pure epoxy. These results suggest numerous applications.


Keywords: Inorganic nanotubes, WS2 nanotubes, Epoxy nanocomposites, Mechanical properties of nanocomposites, Wear of nanocomposites


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