电子科技大学 材料与能源学院，四川 成都 610000
胡潇然，蒋龙太，姚鉴文，等 . 聚偏氟乙烯压电粉体改性方法及其在柔性可穿戴传感器件领域的应用［J］. 中国粉体技术，2026，32（1）：1-10.
HU Xiaoran， JIANG Longtai， YAO Jianwen， et al. Modification methods of polyvinylidene fluoride-based piezoelectric powder and its application in flexible wearable sensor devices［J］. China Powder Science and Technology，2026，32（1）：1−10.
DOI：10.13732/j.issn.1008-5548.2026.01.002
收稿日期：2024-12-23，修回日期：2025-12-15，上线日期：2025-12-25。
基金项目：国家重点研发计划课题，编号：2021YFB2401902；四川省自然科学基金项目，编号：2024NSFSC0252。
第一作者：胡潇然（1989—），男，副研究员，博士，硕士生导师，获青山湖材料基因工程青年科学家奖、小米青年学者，研究方向为智能传感技术。E-mail：Huxiaoran@uestc. edu. cn。
摘要：【目的】为了使聚偏氟乙烯（polyvinylidene fluoride，PVDF）更好地应用于可穿戴电子领域，分析提高 PVDF粉体压电系数 d33的方法，以推动改性 PVDF 粉体在可穿戴传感中的应用。【研究现状】综述利用化学共聚和物理共混手段对PVDF进行改性的方法，在化学共聚方面，主要通过偏氟乙烯与三氟乙烯、六氟丙烯等单体进行共聚，利用空间位阻诱导偶极取向提高PVDF粉体压电系数d33；在物理共混方面，主要通过向PVDF基体中引入钛酸钡、锆钛酸铅、氧化锌等具有高压电系数d33的纳米颗粒或陶瓷粉体提高PVDF粉体压电系数d33；此外，通过3D打印、静电纺丝、高压极化等工艺也可进一步提高PVDF粉体压电系数d33；探讨基于改性PVDF粉体制备的柔性可穿戴传感器件的应用领域。【结论与展望】提出通过化学共聚、物理共混及先进加工工艺的协同优化，可有效提升PVDF粉体的压电系数d33并实现功能集成，为开发高性能 PVDF基柔性传感器奠定了材料基础；认为通过 PVDF粉体压电系数d33的提高，具有高压电性的 PVDF基多模态柔性可穿戴传感器在运动监测、健康管理等方面具有巨大的潜力。
关键词：聚偏氟乙烯；柔性可穿戴传感器；掺杂改性；复合材料；压电系数d33
Significance This review summarizes methods for enhancing the piezoelectric coefficient d33 of polyvinylidene fluoride (PVDF) powder through strategies such as chemical copolymerization and physical blending, and discusses the application fields of flexible wearable sensor devices fabricated from the modified powder.
Progress PVDF with piezoelectric properties enables the mutual conversion of mechanical and electrical signals. Its unique structural flexibility allows it to conform to the dynamic curvature of human skin, enabling the detection of physiological signals and demonstrating great potential in wearable electronics. However, its relatively low piezoelectric coefficient d33 results in low sensitivity and signal-to-noise ratio in wearable devices. Therefore, researchers have focused on improving the d33 of PVDF powder by introducing specific monomers via chemical copolymerization or incorporating piezoelectric ceramics and nanofillers via physical blending. Furthermore, the introduction of functional fillers not only improves the piezoelectric performance of PVDF but also endows the composites with enhanced flexibility, antibacterial properties, and electromagnetic shielding capability.
Conclusions and Prospects Currently, the piezoelectric coefficient d33 of PVDF powder is primarily improved through chemical copolymerization and physical blending. In chemical copolymerization, vinylidene fluoride is mainly copolymerized with monomers such as trifluoroethylene and hexafluoropropylene, where steric hindrance is utilized to promote dipole orientation, thereby increasing d33. In physical blending, nanoparticles or ceramic powders with high d33, such as BaTiO3, PZT, and ZnO, are introduced into the PVDF matrix to enhance the d33 of PVDF powder. Additionally, processes such as 3D printing, electrospinning, and high-voltage poling can further improve the d33 of PVDF powder. With the increase in d33, PVDF-based multimodal flexible wearable sensors exhibit considerable potential in motion monitoring, health management, and related fields.
Keywords：polyvinylidene fluoride; flexible wearable sensor; doping modification; composites; piezoelectric coefficient d33
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