Expanded graphite as a filler for epoxy matrix composites to improve their thermal, mechanical and electrical properties

Subhra Gantayat; Gyanaranjan Prusty; Dibya Ranjan Rout; Sarat K Swain

doi:10.1016/S1872-5805(15)60200-1

Volume 30 Issue 5

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Subhra Gantayat, Gyanaranjan Prusty, Dibya Ranjan Rout, Sarat K Swain. Expanded graphite as a filler for epoxy matrix composites to improve their thermal, mechanical and electrical properties. New Carbon Mater., 2015, 30(5): 432-437. doi: 10.1016/S1872-5805(15)60200-1

Citation:

Subhra Gantayat, Gyanaranjan Prusty, Dibya Ranjan Rout, Sarat K Swain. Expanded graphite as a filler for epoxy matrix composites to improve their thermal, mechanical and electrical properties. New Carbon Mater., 2015, 30(5): 432-437. doi: 10.1016/S1872-5805(15)60200-1

Citation:

Subhra Gantayat, Gyanaranjan Prusty, Dibya Ranjan Rout, Sarat K Swain. Expanded graphite as a filler for epoxy matrix composites to improve their thermal, mechanical and electrical properties. New Carbon Mater., 2015, 30(5): 432-437. doi: 10.1016/S1872-5805(15)60200-1

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Expanded graphite as a filler for epoxy matrix composites to improve their thermal, mechanical and electrical properties

doi: 10.1016/S1872-5805(15)60200-1

1.
Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur 768018, India;
2.
School of Applied Science(Physics), KIIT University, Bhubaneswar 751024, India

Received Date: 2015-03-05
Accepted Date: 2015-11-10
Rev Recd Date: 2015-10-08
Publish Date: 2015-10-28

Abstract

Abstract

Expanded graphite (EG)-reinforced epoxy composites were prepared by a solution mixing method. The structure and morphology of the EG/epoxy composites were investigated by XRD, FE-SEM and HR-TEM. The EG prepared by acid oxidation and thermal expansion shows good compatibility with the epoxy resin that enters the EG layers to decrease their thickness to 60-70 nm, owing to its abundant oxygen-containing functional groups. With the addition of 9 wt% EG, the thermal decomposition temperature of the composite increases from 340 to 480℃, the electrical conductivity from 10-15 to 10-5 S/cm and the tensile stress is increased by more than 30%. These improvements are attributed to the good dispersion of EG sheets in the epoxy matrix.
- Expanded graphite,
- FE-SEM,
- HR-TEM,
- Conductivity

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References(27)

References

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