西北工程技术学报2024，Vol.23Issue(3)：214-218,5.
3D打印调控聚合物晶型制备高压电性能聚合物薄膜
3D Printing Modulated Polymer Crystal to Prepare Polymer Films with High Piezoelectric Properties
摘要
Abstract
Poly(vinylidene fluoride)(PVDF)-based polymer film materials are widely utilized in wearable sensing devices due to their exceptional mechanical flexibility and ease of processing.To address the issue of the low piezoelectric performance of PVDF-based polymers,we developed a technique for modulating their molecular composition and structural aggregation state.We prepared and modulated the composition and structure of poly(vinylidene fluoride)-trifluoroethylene(P(VDF-TrFE))molecular chains through hydrodynamic reduction and 3D printing,aiming to increase the content of its β-phase and achieve the all-trans arrangement of its internal C-F bonds.The crystalline structure and piezoelectric properties of P(VDF-TrFE)were compared before and after modification,revealing the mechanism behind the enhancement of its piezoelectric properties.The results demonstrate that,in comparison to the original poly(vinylidene fluoride)-chlorotrifluoroethylene(P(VDF-CTFE))and the flow-cast P(VDF-TrFE),the β-phase content of the P(VDF-TrFE)film prepared by hydrogenation reduction and 3D printing reached 21%,with the piezoelectric coefficient increasing from 6 pC/N to 25 pC/N.The resulting P(VDF-TrFE)film exhibits excellent mechanical properties,presenting a promising avenue for advancing integrated materials for sensor-driven applications.关键词
聚偏氟乙烯/3D打印/化学合成/压电性能Key words
poly(vinylidene fluoride)/3D printing/chemical synthesis/piezoelectric properties引用本文复制引用
吴文涛,马亚欣,郑莹莹,马香,王健..3D打印调控聚合物晶型制备高压电性能聚合物薄膜[J].西北工程技术学报,2024,23(3):214-218,5.基金项目
宁夏重点研发计划项目(引才专项)(2023BSB03035) （引才专项）
宁夏自然科学基金项目(2023AAC03104) （2023AAC03104）
