The rapid evolution of modern technology for the sustainable development of human beings demands eco-friendly, flexible, cost-effective, and lightweight smart materials. Ceramics-polymer composites are those novel materials with improved features, which fulfill the prerequisite conditions for application in flexible devices. Pristine PVDF is one of such electroactive flexible polymers which exhibits good dielectric, ferroelectric and piezoelectric properties. But, its functional properties in the perspective of device application still need improvement and this can be achieved by adding filler to the pure PVDF. In this communication, we have reported the influence of Hafnia-Zirconia (HZ) ceramics (0.19HfO₂-0.81ZrO₂) filler on structural, microstructural, dielectric, and electrical properties of pure PVDF matrix. The polymer-ceramics flexible composites are synthesized by an eco-friendly and cost-effective method i.e., solution casting method. The phase formation of flexible composites is confirmed from the room temperature XRD spectra. The degree of crystallinity increases with an increase in filler content. The degree of β-phase crystallinity is found to be maximum for 5 wt% of the ceramics filler. An enhanced dielectric constant of ~53 and 20 was observed (as expected) for 5 and 10 wt% of HZ ceramics filler respectively at 100 Hz due to the enrichment of polar β-phase for these two ceramics-polymer composites. The influence of filler content on the dielectric properties was explained based on the percolation model. Relaxation and conduction mechanisms of flexible composites are analyzed from the impedance spectroscopy and ac conductivity study, respectively.

为了人类的可持续发展，现代技术的快速发展需要环保、灵活、具有成本效益和轻量化的智能材料。陶瓷-聚合物复合材料是具有改进特性的新型材料，它满足了应用于柔性器件的先决条件。原始 PVDF 是一种具有良好介电、铁电和压电性能的电活性柔性聚合物。但是，其在器件应用方面的功能特性仍需改进，这可以通过在纯 PVDF 中添加填料来实现。在本次交流中，我们报道了 Hafnia-Zirconia (HZ) 陶瓷 (0.19HfO ₂ -0.81ZrO ₂) 填充物对纯 PVDF 基体的结构、微观结构、介电和电性能的影响。聚合物-陶瓷柔性复合材料是通过一种环保且具有成本效益的方法即溶液浇铸法合成的。从室温 XRD 光谱证实了柔性复合材料的相形成。结晶度随着填料含量的增加而增加。发现 5 wt% 的陶瓷填料的 β 相结晶度最大。由于这两种陶瓷-聚合物复合材料中极性 β 相的富集，在 100 Hz 时，分别观察到 5 和 10 wt% 的 HZ 陶瓷填料的介电常数提高了约 53 和 20（如预期的那样）。基于渗透模型解释了填料含量对介电性能的影响。