Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers
Abstract This work endeavors to investigate thermomechanical performance of carbon fabric reinforced epoxy composite (CEC) with fillers – hexagonal boron nitride (h-BN) and molybdenum disulfide (MoS2). The filler of 2, 4, 6, and 8 Wt.% was dispersed precisely in the epoxy resin through magnetic stir...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2021-11-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600228&tlng=en |
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| author | Yermal Shriraj Rao Basavannadevaru Shivamurthy Nagaraja Shetty Nanjangud Subbarao Mohan |
| author_facet | Yermal Shriraj Rao Basavannadevaru Shivamurthy Nagaraja Shetty Nanjangud Subbarao Mohan |
| author_sort | Yermal Shriraj Rao |
| collection | DOAJ |
| description | Abstract This work endeavors to investigate thermomechanical performance of carbon fabric reinforced epoxy composite (CEC) with fillers – hexagonal boron nitride (h-BN) and molybdenum disulfide (MoS2). The filler of 2, 4, 6, and 8 Wt.% was dispersed precisely in the epoxy resin through magnetic stirring and ultrasonication, prepared the filler loaded CEC using vacuum bag technique and studied the composite behavior at an elevated temperature by dynamic mechanical analysis. The 6 Wt.% MoS2-CEC showed 70% enhancement of storage modulus since the filler in the epoxy networks increased the composite stiffness. The increase in G-band intensity of Raman spectra in the filler loaded composites confirmed the improved matrix-fiber stress transfer. The 4 Wt.% BN-CEC revealed the highest glass-transition temperature 92°C. The thermogravimetric analysis of the composite exhibited a two-step thermal decomposition: epoxy matrix (nearby 260°C) and carbon fibers (beyond 420°C). The 4 Wt.% MoS2-CEC showed the maximum degree of crosslinking, twice the neat CEC, the MoS2 restrained the mobility of the epoxy chains and decreased the thermal decomposition. Both the filler loaded composites have comparable thermal stability and are significantly improved than the neat CEC. Thus, the composite containing solid lubricant filler up to 6 Wt.% shall be used for high-temperature applications. |
| first_indexed | 2024-12-24T01:47:22Z |
| format | Article |
| id | doaj.art-18ea07c7f6be4390bdfccfd7498f3b88 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-24T01:47:22Z |
| publishDate | 2021-11-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-18ea07c7f6be4390bdfccfd7498f3b882022-12-21T17:21:50ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392021-11-0124610.1590/1980-5373-mr-2021-0215Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 FillersYermal Shriraj RaoBasavannadevaru Shivamurthyhttps://orcid.org/0000-0002-4273-4884Nagaraja ShettyNanjangud Subbarao Mohanhttps://orcid.org/0000-0002-1993-3148Abstract This work endeavors to investigate thermomechanical performance of carbon fabric reinforced epoxy composite (CEC) with fillers – hexagonal boron nitride (h-BN) and molybdenum disulfide (MoS2). The filler of 2, 4, 6, and 8 Wt.% was dispersed precisely in the epoxy resin through magnetic stirring and ultrasonication, prepared the filler loaded CEC using vacuum bag technique and studied the composite behavior at an elevated temperature by dynamic mechanical analysis. The 6 Wt.% MoS2-CEC showed 70% enhancement of storage modulus since the filler in the epoxy networks increased the composite stiffness. The increase in G-band intensity of Raman spectra in the filler loaded composites confirmed the improved matrix-fiber stress transfer. The 4 Wt.% BN-CEC revealed the highest glass-transition temperature 92°C. The thermogravimetric analysis of the composite exhibited a two-step thermal decomposition: epoxy matrix (nearby 260°C) and carbon fibers (beyond 420°C). The 4 Wt.% MoS2-CEC showed the maximum degree of crosslinking, twice the neat CEC, the MoS2 restrained the mobility of the epoxy chains and decreased the thermal decomposition. Both the filler loaded composites have comparable thermal stability and are significantly improved than the neat CEC. Thus, the composite containing solid lubricant filler up to 6 Wt.% shall be used for high-temperature applications.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600228&tlng=enBoron nitrideMolybdenum disulfideGlass-transition temperatureStorage modulusRaman spectroscopy |
| spellingShingle | Yermal Shriraj Rao Basavannadevaru Shivamurthy Nagaraja Shetty Nanjangud Subbarao Mohan Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers Materials Research Boron nitride Molybdenum disulfide Glass-transition temperature Storage modulus Raman spectroscopy |
| title | Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers |
| title_full | Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers |
| title_fullStr | Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers |
| title_full_unstemmed | Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers |
| title_short | Thermomechanical Properties of Carbon Fabric Reinforced Epoxy Laminates with h-BN and MoS2 Fillers |
| title_sort | thermomechanical properties of carbon fabric reinforced epoxy laminates with h bn and mos2 fillers |
| topic | Boron nitride Molybdenum disulfide Glass-transition temperature Storage modulus Raman spectroscopy |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600228&tlng=en |
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