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具有显著的介电常数的内在弹性体,通过Relaxor铁电聚合物的弹性
Tianhua Xu1,2, Linping Wang1, Liang Gao1
1CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|June 5, 2024
概括
研究人员开发了一种具有双重介电常数的新型放松铁电弹性体,用于先进的可穿戴电子产品. 这种内在弹性体避免了填充器问题,为传感器和执行器提供了更好的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 高介电常量弹性体对于可穿戴电子产品,储能和传感应用至关重要.
- 目前在聚合物弹性体中使用填充剂的方法导致了高介电损失和不良机械性能等问题.
- 开发具有增强介电性质的内在弹性体对于下一代设备至关重要.
研究的目的:
- 通过轻微交联来研究放松性铁电聚合物的弹性化,以创建内在的高介电常量弹性体.
- 为了克服与常规介电弹性体中的填充物结合相关的局限性.
- 为了实现增强的介电性质,而不会损害机械完整性或引入显著的介电损失.
主要方法:
- 合成放松型铁电弹性体,通过将聚乙烯化物-三乙烯-化) 与长,软链的交叉连接器进行交叉连接.
- 描述产生的弹性体的介电性质,机械行为和热/化学稳定性.
- 在机械应变下评估铁电性能.
主要成果:
- 合成的放松铁电弹性体表现出一种介电常数,是原始聚合物的两倍.
- 新的弹性体在介电性能方面超过了以前报告的所有内在弹性体.
- 该材料在广泛的温度范围内表现出稳定的高压电常数,强大的机械耐疲劳性,以及出色的化学和热稳定性.
- 铁路电力即使在高达80%的压力下也保持稳定.
结论:
- 放松性铁电聚合物的轻微交联为创建具有显著增强介电常数的内在弹性体提供了有效的策略.
- 这种方法绕过了填充剂添加的缺点,为先进的可穿戴电子产品提供了一个有希望的途径.
- 开发的弹性体具有在软机器人,生物传感器和灵活电子设备中的应用潜力.
相关概念视频
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01:18Capacitor With A Dielectric
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01:31Dielectric Polarization in a Capacitor
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