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|
| Type |
Poster Presentation |
| Area |
Industrial Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
IND.P-20 |
| Subject |
EMI shielding effectiveness and mechanical properties of CNTs/biodegradable epoxy composites |
| Authors |
Yoon-Ji Yim, Soo-Jin Park*
Department of Chemistry, Inha University, Korea
|
| Abstract |
Biodegradable epoxy (B-epoxy) was prepared from diglycidyl ether of bisphenol A and epoxidized
linseed oil. The mechanical properties of B-epoxy composites reinforced with multi-walled
carbon nanotubes (MWCNTs/B-epoxy) were examined by employing dynamic mechanical
analysis, critical stress intensity factor (KIC) tests, and impact strength tests. The electromagnetic
interference shielding effectiveness (EMI-SE) of the composites was evaluated using reflection
and absorption methods. Mechanical properties of MWCNTs/B-epoxy were enhanced with an
increase in the MWCNT content, whereas they deteriorated when the MWCNT content was >5
parts per hundred resin (phr). This can likely be attributed to the entanglement of MWCNTs with
each other in the B-epoxy due to the presence of an excess amount of MWCNTs. The highest
EMI-SE obtained was ~16 dB for the MWCNTs/B-epoxy composites with a MWCNT content
of 13 phr at 1.4 GHz. The composites (13 phr) exhibited the minimum EMI-SE (90%) when used
as shielding materials at 1.4 GHz. The EMI-SE of the MWCNTs/B-epoxy also increased with an
increase in the MWCNT content, which is a key factor affecting the EMI-SE. |
| E-mail |
yjyim@inha.edu |
|
121st General Meeting of the KCS