优化溶剂双极矩使PVDF能够提高压电性能
Tianliang Wang1, Yinglin Wang1, Fan Dang1
1School of Aerospace Science and Technology, Xidian University, Xi'an 710126, People's Republic of China.
Nanotechnology
|November 2, 2023
概括
使用连续真空技术优化溶剂极性可增强聚乙烯化物 (PVDF) 的压电性能. 这种方法可以改善PVDF.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术纳米技术
背景情况:
- 全转变形状 (β相) 对于聚乙烯化物 (PVDF) 压电非常重要.
- 制造高性能的PVDF压电传感器是具有挑战性的,因为难以诱导全转换形态.
研究的目的:
- 开发一种有效和经济高效的方法来增强PVDF的压电特性.
- 研究溶剂极性调节对PVDFβ相形成和压电性能的影响.
主要方法:
- 使用连续真空技术来调整二元溶剂混合物 (乙和DMF) 的极性.
- 研究了溶剂的二极子瞬间与PVDFβ相二极子之间的相互作用.
- 使用富里埃变换红外光谱学和压电常数测试来表征PVDF膜.
主要成果:
- 在 4:6的乙:DMF比率下,实现了具有高压电性 (d33 ≈ -44.8 pC N-1) 和强烈的自我极化的纯PVDF薄膜.
- 由此产生的A4D6装置表现出高灵敏度 (S1 = 0.182 V/N 超过0.5 N30 N) 和驱动能力 (0.49 mW m−2).
- 该设备在作为压力传感器的电气测试中表现出卓越的可靠性.
结论:
- 通过连续真空技术优化溶剂极性是增强PVDF压电功能的有效策略.
- 这种方法为生产高性能压电传感器件提供了成本高效的途径.
- 这些发现为开发先进的压电聚合物应用提供了宝贵的见解.
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