Preparation of Graphene and Its Effect on Conductivity Epoxy Resin
High quality graphene and its epoxy composites were prepared by exfoliation of first stage FeCl<sub>3</sub>-GICs with sodium borohydride (NaBH<sub>4</sub>) aqueous solution, followed by compounding with epoxy resin. First stage FeCl<sub>3</sub>-GICs were prepared...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2018-07-01
|
| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I7/53 |
| _version_ | 1797966227613679616 |
|---|---|
| author | QIAO Xu LIN Zhi LIN Xiao-dan |
| author_facet | QIAO Xu LIN Zhi LIN Xiao-dan |
| author_sort | QIAO Xu |
| collection | DOAJ |
| description | High quality graphene and its epoxy composites were prepared by exfoliation of first stage FeCl<sub>3</sub>-GICs with sodium borohydride (NaBH<sub>4</sub>) aqueous solution, followed by compounding with epoxy resin. First stage FeCl<sub>3</sub>-GICs were prepared by compounding anhydrous FeCl<sub>3</sub> and graphite at 330℃. XRD analysis and scanning electron microscopy data show that the interlayer spacing of graphite intercalation compounds is increased from 0.335nm to 0.930nm,indicates first stage FeCl<sub>3</sub>-GIC is obtained. Transmission electron microscopy shows single layer grapheme is made. Raman spectroscopy and XPS data show that the graphene's I<sub>D</sub>/I<sub>G</sub>=0.09,C/O=40.80, comparing that of flake graphite's I<sub>D</sub>/I<sub>G</sub>=0.17 and FTIR spectra, suggesting that NaBH<sub>4</sub> exfoliation can simultaneously repair the structural defects of flake graphite. Characteristic peaks of C=O(1735cm<sup>-1</sup>),C-O(1228cm<sup>-1</sup>)are found in FTIR spectra of flake graphite, while no functional groups characteristic peaks of graphene shows up in the corresponding locations, indicating that hydrogen produced by sodium borohydride successfully reduces oxygen from graphite makes the graphite more complete structure. The conductivity of composites gradually increases with the increase of graphene content, and the volume resistivity decreases from the pure epoxy resin of 1.95×10<sup>13</sup>Ω·cm to 3.41×10<sup>5</sup>Ω·cm when the volume fraction is 3.70%. The conductivity of the composites increases by 8 orders of magnitude.SEM images of fracture morphology shows some incompatibility exists between graphene and epoxy resin. |
| first_indexed | 2024-04-11T02:12:23Z |
| format | Article |
| id | doaj.art-fa5ce3f388fa41eeba3e004a205224d1 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:12:23Z |
| publishDate | 2018-07-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-fa5ce3f388fa41eeba3e004a205224d12023-01-03T01:58:09ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-07-01467536010.11868/j.issn.1001-4381.2016.001540201807001540Preparation of Graphene and Its Effect on Conductivity Epoxy ResinQIAO Xu0LIN Zhi1LIN Xiao-dan2School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, ChinaHigh quality graphene and its epoxy composites were prepared by exfoliation of first stage FeCl<sub>3</sub>-GICs with sodium borohydride (NaBH<sub>4</sub>) aqueous solution, followed by compounding with epoxy resin. First stage FeCl<sub>3</sub>-GICs were prepared by compounding anhydrous FeCl<sub>3</sub> and graphite at 330℃. XRD analysis and scanning electron microscopy data show that the interlayer spacing of graphite intercalation compounds is increased from 0.335nm to 0.930nm,indicates first stage FeCl<sub>3</sub>-GIC is obtained. Transmission electron microscopy shows single layer grapheme is made. Raman spectroscopy and XPS data show that the graphene's I<sub>D</sub>/I<sub>G</sub>=0.09,C/O=40.80, comparing that of flake graphite's I<sub>D</sub>/I<sub>G</sub>=0.17 and FTIR spectra, suggesting that NaBH<sub>4</sub> exfoliation can simultaneously repair the structural defects of flake graphite. Characteristic peaks of C=O(1735cm<sup>-1</sup>),C-O(1228cm<sup>-1</sup>)are found in FTIR spectra of flake graphite, while no functional groups characteristic peaks of graphene shows up in the corresponding locations, indicating that hydrogen produced by sodium borohydride successfully reduces oxygen from graphite makes the graphite more complete structure. The conductivity of composites gradually increases with the increase of graphene content, and the volume resistivity decreases from the pure epoxy resin of 1.95×10<sup>13</sup>Ω·cm to 3.41×10<sup>5</sup>Ω·cm when the volume fraction is 3.70%. The conductivity of the composites increases by 8 orders of magnitude.SEM images of fracture morphology shows some incompatibility exists between graphene and epoxy resin.http://jme.biam.ac.cn/CN/Y2018/V46/I7/53graphenesuper conjugated structuregraphite intercalation compoundepoxy resinvolume resistivity |
| spellingShingle | QIAO Xu LIN Zhi LIN Xiao-dan Preparation of Graphene and Its Effect on Conductivity Epoxy Resin Cailiao gongcheng graphene super conjugated structure graphite intercalation compound epoxy resin volume resistivity |
| title | Preparation of Graphene and Its Effect on Conductivity Epoxy Resin |
| title_full | Preparation of Graphene and Its Effect on Conductivity Epoxy Resin |
| title_fullStr | Preparation of Graphene and Its Effect on Conductivity Epoxy Resin |
| title_full_unstemmed | Preparation of Graphene and Its Effect on Conductivity Epoxy Resin |
| title_short | Preparation of Graphene and Its Effect on Conductivity Epoxy Resin |
| title_sort | preparation of graphene and its effect on conductivity epoxy resin |
| topic | graphene super conjugated structure graphite intercalation compound epoxy resin volume resistivity |
| url | http://jme.biam.ac.cn/CN/Y2018/V46/I7/53 |
| work_keys_str_mv | AT qiaoxu preparationofgrapheneanditseffectonconductivityepoxyresin AT linzhi preparationofgrapheneanditseffectonconductivityepoxyresin AT linxiaodan preparationofgrapheneanditseffectonconductivityepoxyresin |