Electrical, Thermal and Mechanical Properties of Epoxy/CNT/Calcium Carbonate Nanocomposites
| Autor: | Eduardo Henrique Backes, Fabio Roberto Passador, Luiz Antonio Pessan, Tarcísio Sanson Sene |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Electrical resistivity and conductivity Epoxy nanocomposites General Materials Science In situ polymerization Composite material Materials of engineering and construction. Mechanics of materials Nanocomposite Flexural modulus Mechanical Engineering MWCNT Percolation threshold Epoxy 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences dielectrical properties Calcium carbonate chemistry Mechanics of Materials visual_art visual_art.visual_art_medium TA401-492 0210 nano-technology Glass transition |
| Zdroj: | Materials Research v.21 n.1 2018 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Vol 21, Iss 1 (2017) Materials Research, Volume: 21, Issue: 1, Article number: e20170801, Published: 04 DEC 2017 Materials Research, Issue: ahead, Published: 04 DEC 2017 |
| Popis: | Epoxy/CNT and epoxy/CNT/calcium carbonate nanocomposites were produced via in situ polymerization assisted by ultrasonication without solvent and electrical, mechanical, thermal and thermomechanical properties of nanocomposites were evaluated. Epoxy/CNT presented very low percolation threshold, near 0.05 wt % and nanocomposites with higher contents of CNT presented further increase in electrical conductivity. The addition of calcium carbonate in epoxy/CNT nanocomposites increased the electrical conductivity, due to volume exclusion phenomena. Regarding thermal properties, due to the low content of the CNT and calcium carbonate no changes in glass transition (Tg) were observed. DMA results showed no significant changes in thermomechanical properties, once the contents of CNT and calcium carbonate are below stiffness threshold, however an increase of flexural modulus by adding CNT and calcium carbonate was observed. |
| Databáze: | OpenAIRE |
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