College of Transportation, Shandong University of Science and Technology, Qingdao 266590, China.
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
Molecules. 2023 Apr 28;28(9):3797. doi: 10.3390/molecules28093797.
Boron nitride nanosheet (BNNS) and graphene oxide (GO) as a single filler can effectively improve the thermal conductivity of the composites, and the synergistic mechanism of BNNS and GO was investigated in this paper. In this study, BNNS was first surface-functionalized and the multi-sized (50 nm, 200 nm, 500 nm) modified BNNS (A-BN) were attached to GO through non-covalent bonding interactions to form a cross-linked structure. Then, A-BN and GO were used as thermal fillers and support material adsorption eutectic phase change materials (PCMs) to prepare composite phase change material (CPCM). Characterization results show that small-size A-BN was more likely to form dense thermal networks with good compatibility and interface connectivity between PCMs, A-BN, and GO, ensuring that PCMs can be stored in the network without leaking. When the size of the BNNS was greater than 200 nm, the advantage of thermal conductivity obtained by A-BN was no longer obvious, and the phase change behavior of CPCM was inhibited. In general, the prepared CPCM has the ideal thermal response and thermal stability, which is very suitable for energy storage and thermal management applications.
氮化硼纳米片（BNNS）和氧化石墨烯（GO）作为单一填料可以有效地提高复合材料的导热系数，本文研究了 BNNS 和 GO 的协同机制。在本研究中，首先对 BNNS 进行表面功能化，通过非共价键相互作用将多尺寸（50nm、200nm、500nm）改性 BNNS（A-BN）附着到 GO 上，形成交联结构。然后，将 A-BN 和 GO 用作热填料和支撑材料吸附共晶相变材料（PCM），以制备复合相变材料（CPCM）。表征结果表明，小尺寸 A-BN 更有可能与 PCM、A-BN 和 GO 之间形成具有良好相容性和界面连接性的致密热网络，确保 PCM 可以储存在网络中而不会泄漏。当 BNNS 的尺寸大于 200nm 时，A-BN 获得的导热优势不再明显，并且抑制了 CPCM 的相变行为。总体而言，所制备的 CPCM 具有理想的热响应和热稳定性，非常适合能量存储和热管理应用。
