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Polymer-Plastics Technology and Engineering Volume 48, 2009 - Issue 4
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Original Articles

The Influence of High Content Nano-Al2O3 on the Properties of Epoxy Resin Composites

Ya-Ping Zheng Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi'an, PR ChinaCorrespondence[email protected]
,
Jiao-Xia Zhang Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi'an, PR China
,
Qian Li Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi'an, PR China
,
Weiwei Chen Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi'an, PR China
&
Xueliang Zhang No. 92602 Unit, Ningbo, PR China
Pages 384-388 | Published online: 31 Mar 2009
 
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Abstract

The nano-alumina (nano-Al2O3) particles were modified by silicon coupling agent KH-550, and the epoxy matrix nanocomposites were prepared by using nano-Al2O3 as reinforcing agent. The dispersion status was studied by transmission electron microscope (TEM). On this basis, effects of nano-Al2O3 content on dielectric and mechanical properties of the nanocomposites were studied. Morphologies of the fracture surface of nano-Al2O3/epoxy composites were observed by scanning electron microscope (SEM). As a result, the mechanical properties reached to the best when the nano-Al2O3 content is 20%. The impact strength, flexural modulus and flexural strength increased by 84%, 29% and 18% respectively. The relative dielectric constant and the dielectric loss tangent were increased with nano-Al2O3 content.

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