用于纸基电子和热管理的石墨烯/碳纳米纤维混合蜡乳液
Hybrid Graphene/Carbon Nanofiber Wax Emulsion for Paper-based Electronics and Thermal Management
摘要：
用作电导体和/或热导体的电子器件材料通常是刚性的、昂贵的、难以获得并且有时是有毒的。一种重量轻、灵活且环保的导电导热纳米复合材料可以改善电子行业的环境友好性，并实现新的应用。考虑到这一点，我们已经制造了导电和导热的柔性材料，功能化纸与纳米碳导电油墨。巴西棕榈蜡在异丙醇中乳化并与石墨烯纳米片（GNP）或GNP和碳纳米纤维（CNF）的混合物混合。与纯GNP复合材料相比，混合样品的逾渗阈值降低，这是由于其增加的填料纵横比。混合样品还表现出优异的弯曲和折叠稳定性。涂层的致密化以降低它们的薄层电阻，使得它们能够实现低至约50 Ω sq-1的GNP基纸。致密化过程提高了纸基导体的弯曲稳定性、耐磨性和电磁干扰屏蔽性。最后，压缩样品显示出令人印象深刻的增强其热扩散率。柔性和多功能的纳米碳涂层纸是一种有前途的电子导体和散热材料，同时可以提高电子行业的环境可持续性。
英文摘要：
Materials for electronics that function as electrical and/or thermal conductors are often rigid, expensive, difficult to be sourced and sometimes toxic. An electrically and thermally conductive nanocomposite that is lightweight, flexible and eco-friendly could improve the environmental friendliness of the electronics sector and enable new applications. Considering this, we have fabricated electrically and thermally conductive flexible materials by functionalizing paper with nanocarbon conductive inks. Carnauba wax is emulsified in isopropyl alcohol and mixed with graphene nanoplatelets (GNPs) or with hybrids of GNPs and carbon nanofibers (CNFs). The percolation threshold of the hybrid samples is lowered compared with the pure GNPs composites, due to their increased filler aspect ratio. The hybrid samples also exhibit superior bending and folding stability. Densification of the coating to decrease their sheet resistance enables them to achieve as low as ~ 50 Ω sq-1 for the GNP-based paper. The densification procedure improves the bending stability, the abrasion resistance, and the electromagnetic interference shielding of the paper-based conductors. Finally, the compressed samples show an impressive enhancement of their thermal diffusivity. The flexible and multifunctional nanocarbon coated paper is a promising electronic conductor and thermally dissipative material and, at the same time, can increase the environmental sustainability of the electronics sector.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
