Comparison with Experiment, Model, and Simulation for Thermal Conductive Mechanism of Polymer Composites without Particle Network,Macromolecular Chemistry and Physics

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Comparison with Experiment, Model, and Simulation for Thermal Conductive Mechanism of Polymer Composites without Particle Network
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2021-08-18 , DOI: 10.1002/macp.202100200
Yancong Feng ₁ , Xin Chen ₁ , Yongrui Li ₁ , Yao Wang ₁ , Hao Li ₁ , Guofu Zhou ₂

Affiliation

Construction of particle network is the most effective strategy for polymer composites with high thermal conductivity. However, the disadvantages of this strategy, such as high particle concentration, complex preparation process, weak mechanical properties or thermodynamic instability, still limit the application. The heat transfer mechanism of polymer composites without particle network remains unclear. In this work, for exploring the heat transfer path of polymer composites without particle network, polymer composites are designed with spherical SiO₂ particles grafted by 3D crosslinked organosilicone matrix, to minimize influence of interfacial thermal resistance and crystallization. Combining experiment, theoretical models and coarse-grained molecular dynamics simulations, it is concluded that the heat fluxes concentrate on the matrix among the particles.

中文翻译：

无粒子网络聚合物复合材料导热机理的实验、模型和模拟比较

构建粒子网络是高导热聚合物复合材料最有效的策略。然而，该策略存在颗粒浓度高、制备工艺复杂、机械性能弱或热力学不稳定等缺点，仍限制了其应用。没有颗粒网络的聚合物复合材料的传热机制尚不清楚。在这项工作中，为了探索没有颗粒网络的聚合物复合材料的传热路径，聚合物复合材料设计了球形 SiO ₂颗粒由 3D 交联有机硅基质接枝，以尽量减少界面热阻和结晶的影响。结合实验、理论模型和粗粒分子动力学模拟，得出热通量集中在颗粒之间的基体上的结论。

更新日期：2021-10-07

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