Besides, it can be found that tp of CNT/EVA25 is always higher than that of CNT/EVA10. It was reported that, after CNTs were oxidation-treated, the strong CNT–polymer interaction delayed the mobility of CNTs [16]. Similarly, the stronger interaction existing in CNT/EVA25 limits the motion of CNTs and the conductive network formation. Additionally, the higher viscosity of EVA 25 also delays the formation of conducting CNT paths. Therefore, these factors give rise to a higher tp in CNT/EVA25.