Chaudhry A U, Mabrouk Abdel Nasser, Abdala Ahmed
Chemical Engineering Program, Texas A&M University at Qatar, Doha, Qatar.
Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Doha, Qatar.
Sci Technol Adv Mater. 2020 Nov 2;21(1):737-766. doi: 10.1080/14686996.2020.1820306.
The low thermal conductivity of polymers is a barrier to their use in applications requiring high thermal conductivity such as electronic packaging, heat exchangers, and thermal management devices. Polyolefins represent about 55% of global thermoplastic production, and therefore improving their thermal conductivity is essential for many applications. This review analyzes the advances in enhancing the thermal conductivity of polyolefin composites. First, the mechanisms of thermal transport in polyolefin composites and the key parameters that govern conductive heat transfer through the interface between the matrix and the filler are discussed. Then, the advantage and limitations of the current methods for measuring thermal conductivity are analyzed. Moreover, the progress in predicting the thermal conductivity of polymer composites using modeling and simulation is discussed. Furthermore, polyolefin composites and nanocomposites with different thermally conductive fillers are reviewed and analyzed. Finally, the key challenges and future directions for developing thermally enhanced polyolefin composites are outlined.
聚合物的低导热性阻碍了它们在诸如电子封装、热交换器和热管理设备等需要高导热性的应用中的使用。聚烯烃约占全球热塑性塑料产量的55%，因此提高其导热性对许多应用至关重要。本综述分析了提高聚烯烃复合材料导热性方面的进展。首先，讨论了聚烯烃复合材料中的热传输机制以及控制通过基体与填料之间界面进行传导热传递的关键参数。然后，分析了当前测量导热性方法的优缺点。此外，还讨论了使用建模和模拟预测聚合物复合材料导热性方面的进展。此外，对具有不同导热填料的聚烯烃复合材料和纳米复合材料进行了综述和分析。最后，概述了开发热增强聚烯烃复合材料的关键挑战和未来方向。
