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Journal of Metallurgy and Materials Science
Year : 2010, Volume : 52, Issue : 4
First page : ( 305) Last page : ( 315)
Print ISSN : 0972-4257. Online ISSN : 0974-1267.

Assessment of nanoclay filled epoxy on mechanical, thermal and chemical resistance properties of nanocomposites

Kumar M. Ashok*, Reddy K. Hemachandra, Reddy Y. Venkata Mohana, Reddy G. Ramachandra, Kumar N.S. Venkatesh, Reddy B.H. Nanjunda

Sri Krishnadevaraya University College of Engineering & Technology, Anantapur-515055, Andhra Pradesh, India.

J.N.T.University Anantapur, Anantapur-515002, Andhra Pradesh, India.

G. Pulla Reddy Engineering College, Kurnool-518002 (AP) India.

Sri Krishnadevaraya University-515055, Anantapur Govt. Polytechnic, Anantapur-515002.

Amrita Vishwa Vidyapeetham, Amritapuri Campus, Bangalore.

* Corresponding Author Email: ashokkumarmala7@hotmail.com, konireddy@gmail.com, yvmr06@yahoo.com

Abstract

Clay/epoxy nanocomposites are synthesized by high shear mechanical mixer followed by ultra-sonicator is used to obtain the homogeneous mixture of epoxy and clay under the aid of in-situ polymerization. Compression, impact, hardness, frictional coefficient and chemical resistance properties of the nanocomposites are studied to assess the influence of surface modified clay filled with epoxy as a function of clay. It is observed that all the properties are increased with increasing clay content up to 5 wt. % clay, decreased further increasing in clay content. Mechanical properties are optimally increased at 5 wt. % clay and yet results are compared with neat epoxy matrix. The system is processed by hand-lay up technique for making the test specimens. Fractured surfaces are tested by Scanning Electron Microscope (SEM) unearths reasons for the significant improvements. In Thermogravimetric analysis (TGA), 6°C rise in decomposition temperature is found. Differential scanning calorimetry (DSC) results showed that the modified clay particles affected the glass transition temperature (Tg) of the nanocomposites.

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Keywords

Clay, Epoxy, Mechanical properties, Thermal properties, Chemical resistance, Nanocomposies.

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