With the expanding application of capacitors, thermal resistant dielectric materials are in high demand due to the increasing harsh environments where the capacitors are needed and the heat generated by the capacitors. Herein, we present polyarylene ether nitrile and titanium dioxide hybrids which can be used as thermal resistant dielectrics for these capacitors. Phthalonitrile modified titanium dioxide (TiO²-CN) and phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) are firstly prepared. After being cast into TiO²-CN/PEN nanocomposite films, these composites self-crosslink upon heating at 320 °C for 4 h, forming the polyarylene ether nitrile and titanium dioxide hybrids (TiO²-PEN). Improved dielectric constants which are stable from room temperature to 200 °C of these hybrids are observed, indicating the potential application of the hybrids as thermal resistant dielectrics.

随着电容器的广泛应用，由于需要电容器的恶劣环境和电容器产生的热量不断增加，因此对耐热介电材料的需求很高。本文中，我们介绍了可用作这些电容器的耐热电介质的聚亚芳基醚腈和二氧化钛杂化物。首先制备了邻苯二甲腈改性的二氧化钛（TiO ² -CN）和邻苯二甲腈封端的聚亚芳基醚腈（PEN-Ph）。将这些复合材料浇铸成TiO ² -CN / PEN纳米复合薄膜后，在320°C加热4 h后自交联，形成聚亚芳基醚腈和二氧化钛杂化物（TiO ²-钢笔）。观察到这些杂化材料在室温至200°C稳定的介电常数得到了改善，表明杂化材料作为耐热电介质的潜在应用。