Effect of amine-treated graphite nanofibers on thermal conductivity and fracture resistance of polymer composites
발표자
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초록
내용
In this work, the amino-functionalized graphite fibers (TGFs) are successfully modified using a tetraethylenepentamine (TEPA) to use as a reinforcement in epoxy-based composites. To validate the thermal conductivity and fracture resistance between the GFs and epoxy matrix, composites are fabricated using three different types of GFs, namely the pristine GFs, the acid-treated GFs (AGF), and the TGFs, each with various GF contents. The optimal GF loading for the bare and AGF is shown to be 0.50 wt.%, while that of the TGF is as high as 0.75 wt.%. The highest fracture toughness values of 25.8 MPa.m1/2 are demonstrated for the TGF-loaded composites with the fraction of 0.75 wt.%, representing enhancements of ~400%, respectively, compared to those of the neat composites.