Poly(vinylidene fluoride) (PVDF)-based composites attract tremendous attention as dielectric materials. However, their development has been limited due to the raised problem in the in-homogeneous polymer composites. In this work, a novel PVDF-based film incorporated with polyamide-1, containing the highest density of dipole among all polyamides, was prepared to improve the crystallization behaviors and dielectric properties. The results showed that the optimal concentration of polyamide-1 in PVDF was 6 wt.%. The crystallization rate of PVDF was improved in the presence of polyamide-1. Interestingly, the polyamide-1 was conductive to the formation of β form crystal of PVDF, which exhibited great electric performance. The dielectric constant of PVDF increased sharply and loss tangent still kept at a low level of [email protected] Hz when the concentration of polyamide-1 was 6 wt.%. This work may provide a new direction to design dielectric materials for PVDF blends.

聚偏二氟乙烯（PVDF）基复合材料作为介电材料引起了极大的关注。然而，由于非均质聚合物复合材料中存在的问题，它们的发展受到了限制。在这项工作中，制备了一种掺有聚酰胺 1 的新型 PVDF 基薄膜，该薄膜在所有聚酰胺中偶极子密度最高，以改善结晶行为和介电性能。结果表明，聚酰胺-1 在 PVDF 中的最佳浓度为 6 wt.%。在聚酰胺-1 存在下，PVDF 的结晶速率得到提高。有趣的是，聚酰胺-1 有利于 PVDF β 晶的形成，表现出良好的电学性能。当聚酰胺-1 的浓度为 6 wt.% 时，PVDF 的介电常数急剧增加，损耗角正切仍保持在 [email protected] Hz 的低水平。这项工作可能为设计用于 PVDF 共混物的介电材料提供新的方向。