| 학회 |
한국화학공학회 |
| 학술대회 |
2008년 가을 (10/23 ~ 10/24, 부산 BEXCO) |
| 권호 |
14권 2호, p.3440 |
| 발표분야 |
재료 |
| 제목 |
Surface Modified Carbon Black filled Poly Vinyl Alcohol Coating Materials for EMI Shielding |
| 초록 |
The electrical conductivity of polymers can be increased by the addition of carbon fillers, such as carbon blacks (CB). Carbon black N330 was surface modified by acid, base and physical activation in CO2. The surface functional groups could be modified by chemical treatment of the carbon blacks. The electrical conductivity of filler and coating materials increased after the treatments of carbon blacks. The electromagnetic interference (EMI) shielding efficiency (SE) of CBPVA composites increased from 1 dB to 3 dB after the acid treatment and after the base treatment it increased to 6 dB. The CO2 activation led to significant increases in the surface area of carbon black N330 which increased from 80 m2/g to 1142 m2/g and the EMI SE of CO2 activated CBPVA composites were obviously increased from 1dB to 9.5 dB due to the increased surface area. |
| 저자 |
후취안리, 김명수
|
| 소속 |
명지대 |
| 키워드 |
EMI; PVA; carbon blacks; electrical conductivity; SE
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
