| 唐波.化学通报,2022,85(12):1483-1487. |
| 石墨烯修饰的复合热界面材料的热性能研究 |
| Thermal performances of graphene modified composite thermal interface materials |
| 投稿时间：2022-03-18 修订日期：2022-06-21 |
| DOI： |
| 中文关键词: 石墨烯，热界面材料，表面官能团，导热系数 |
| 英文关键词:graphene, thermal interface materials, surface functional groups, thermal conductivity |
| 基金项目:国家自然科学基金项目(51506012)和江苏省青蓝工程项目(SCZ1908200013)资助 |
|
| 摘要点击次数: 536 |
| 全文下载次数: 0 |
| 中文摘要: |
| 采用还原氧化石墨烯(RGO)和三维网状石墨烯(3DGN)修饰环氧树脂,制备高性能的复合热界面材料(TIM)。其中,3DGN为声子提供了快速输运网络,而RGO则显著增强石墨烯导热填料与环氧树脂基材界面处声子的传输能力。RGO表面官能团的类型对样品的热性能有显著影响,羧基是促进界面区域声子传输的最佳选择。优化RGO(20 wt%)和3DGN(10 wt%)的质量分数后,样品的导热系数达到6.5Wm-1K-1，是本征环氧树脂的32倍。此外,复合TIM的拉伸极限也达到280%。 |
| 英文摘要: |
| Reduced graphene oxide (RGO) and three-dimensional graphene network (3DGN) were adopted to co-modify thermal interface materials (TIM). In the resulting TIM, the 3DGN provides the fast transport channel to phonons, while the RGO plays as a bridge to enhance the phonon transport ability on the interface between the graphene fill and epoxy resin matrix. The type of surface functional group of the RGO was found the determinant to the resulting thermal performance, and the carboxyl group was the best choice to improve the interface contact level and promote the phonon transport. After optimizing the mass fraction of the RGO (20 wt%) and 3DGN (10 wt%), the obtained thermal conductivity of the as-prepared TIM reaches 6.5 Wm-1K-1, which is 32 times higher than that of the pristine epoxy resin. Moreover, the mechanical performance of the as-prepared TIMs were tested, the stretching limits reached 280%. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|