通过铁改性来定制含有橄衍生生物炭的环氧复合材料的磁性和电性
Erik Piatti1, Daniele Torsello1,2, Gaia Gavello1
1Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy.
Nanomaterials (Basel, Switzerland)
|August 26, 2023
概括
来自橄废物的铁定制生物炭增强了用于微波屏蔽的环氧复合材料. 更高的填充度显著提高电导率和磁性,创造先进的屏蔽材料.
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:
- 导电性碳和磁性颗粒是微波屏蔽聚合物复合材料的关键.
- 生物炭是一种来自热解的富含碳的材料,提供了一个可持续的填充选项.
- 用磁性元素定制生物炭可以提高复合材料的性能.
研究的目的:
- 开发和特征铁定制生物炭从橄修剪废物.
- 为了研究用这种生物炭填充的环氧复合材料的电磁性质.
- 评估这些复合材料在微波辐射屏蔽方面的潜力.
主要方法:
- 橄修剪的热解以生产生物炭.
- 生物炭的铁制造. 生物炭的铁制造.
- 用10%和40%生物炭填充剂制备的环氧复合材料.
- 电导率 (直流和交流) 的测量.
- 磁性属性的表征 (hysteresis). 磁性属性的表征 (hysteresis). 磁性属性的表征 (hysteresis). 磁性属性的表征 (hysteresis). 磁性属性的表征.
- 复杂的导电性测量.
主要成果:
- 最高的直流电导率达到了59mS/m,其中40%的重量为铁制生物炭.
- 观察到,在填充剂加载量为10%的重量时,导电率显著下降至60μS/m.
- 用铁量身定制的生物炭复合材料表现出铁磁性行为,随着填料度的增加而增加.
- 复杂的电容性 (ε') 和交流导电性 (σ) 都在生物炭含量较高时得到改善.
结论:
- 铁量身定制的生物炭是一种有效的填充剂,可以增强环氧复合材料的微波屏蔽性能.
- 填充剂度对于实现高电导率和磁响应至关重要.
- 这种方法为先进的功能聚合物复合材料提供了一条可持续的途径.
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