본 연구는 1차원의 Carbon nanotube (CNT)와 2차원의 MXene을 최적의 비율로 배합한 우수한 전기전도성과 발열특성을 가진 저차원 복합소재 기반 면상발열체를 제안한다. CNT와 MXene을 친환경 소재인 Waterborne polyurethane (WPU)과 배합하되, MXene과 CNT의 중량비율을 3:1, 1:1, 1:3, 1:7, 1:14로 다르게 적용하고 WPU는 동일한 비율로 적용하였다. 그 결과, CNT 비율이 높을수록 면저항이 낮아지고 발열온도가 높아지는 것을 확인하였다. MXene과 CNT를 1:7, 1:14로 배합하는 경우 CNT-WPU 면상발열체보다 더 낮은 면저항과 높은 발열온도를 보여주었다. 이는 1차원 CNT와 2차원 MXene의 최적 배합으로 고밀도 네트워크가 형성되어 평평한 표면이 형성되기 때문이다. 위 우수한 전기적 특성을 가진 저차원 복합소재는 플렉서블 소자에 유용하게 활용될 것으로 기대된다.
KSP Keywords
Carbon nano-tube(CNT), waterborne polyurethane
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