우수한 발열 및 전자파 차폐 성능을 갖는 계층구조의 탄소나노튜브/셀룰로스 페이퍼

초록

A series of multiwalled carbon nanotube (MWCNT)-coated cellulose composite papers were fabricated by a simple dip-dry coating process, and their microstructures, electric heating and electromagnetic interference (EMI) shielding performance were investigated. SEM images revealed that MWCNTs are dominantly coated on the paper surfaces, but the population of the nanotubes decreased from the surface to the inside of the paper. The electrical conductivity in the in-plane direction significantly increased from 0.02 S/cm to 1.11 S/cm, as the number of dip-dry cycles increased from 1 to 30.The MWNT/cellulose papers exhibited excellent electric heating performance, represented by temperature responsiveness, steady-state maximum temperature, and electrical energy efficiency. In addition, the composite paper with electrical conductivity of 1.11 S/cm showed high EMI shielding effectiveness of 20.3 dB at 1 GHz.