Li Jing, Liu Jialiang, Liu Jinshui, Lai Jinfeng, Chen Yuxun, Li Wenjun
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China.
SCUT-Zhuhai Institute of Modern Industrial Innovation, Zhuhai 519175, China.
Nanomaterials (Basel). 2021 Dec 14;11(12):3392. doi: 10.3390/nano11123392.
Emerging as a light, flexible and highly thermally conductive material, graphene-based membranes have attracted extensive attention in thermal management field. However, the preparation of high-quality graphene-based membranes usually involves complex processes and thermal annealing at ultra-high temperature, which limits their large-scale application in thermal management field. In our study, reduced graphene oxide-Ni-hydroxypropyl methyl cellulose (RGO-Ni-HPMC) composite membrane was prepared from catalytic pyrolysis of hydroxypropyl methyl cellulose (HPMC) with Ni nanoparticles to generate multilayer graphene and form phonon transport channels between adjacent graphene layers. Further, our study shows that the RGO-Ni-HPMC composite membrane has a good heat dissipation effect at the hot spots at high temperature. The average temperature of hot spots is reduced by 11.5 °C. It is expected to solve the heat dissipation problem of high-power electronic equipment.
作为一种轻质、柔性且具有高导热性的材料，基于石墨烯的薄膜在热管理领域引起了广泛关注。然而，高质量基于石墨烯的薄膜的制备通常涉及复杂的工艺和超高温热退火，这限制了它们在热管理领域的大规模应用。在我们的研究中，通过用镍纳米颗粒催化羟丙基甲基纤维素（HPMC）热解制备了还原氧化石墨烯-镍-羟丙基甲基纤维素（RGO-Ni-HPMC）复合膜，以生成多层石墨烯并在相邻石墨烯层之间形成声子传输通道。此外，我们的研究表明，RGO-Ni-HPMC复合膜在高温热点处具有良好的散热效果。热点的平均温度降低了11.5°C。有望解决高功率电子设备的散热问题。
