酸/烟/Fe3O4复合相变材料具有较低的导热率和磁加速加热性能,用于可穿戴热疗法
Giang Tien Nguyen1, Van Khanh Thi Nguyen1, Thanh Sang Nguyen1
1Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education (HCMUTE) 1 Vo Van Ngan, Thu Duc Ho Chi Minh City 700000 Vietnam ntgiang@hcmute.edu.vn.
Nanoscale advances
|April 11, 2025
概括
新的磁性复合相变材料 (MCPCMs) 结合了烟 (FS) 和酸 (SA) 与氧化铁纳米粒子 (NP). 这些MCPCM提供快速的磁加热和低的导热率,用于有效的热疗法应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 生物医学工程 生物医学工程
背景情况:
- 开发先进的相变材料 (PCM) 对于高效的热疗法至关重要.
- 基于化二氧化 (FS) 的复合材料因其热性能而受到探索.
- 在低热导率 (TC) 的同时实现快速加热速度是一个关键的挑战.
研究的目的:
- 创建新的磁性复合物相变材料 (MCPCMs),使用烟 (FS),酸 (SA) 和Fe3O4纳米粒子 (NP).
- 研究这些MCPCM的热物理特性,磁加热性能和热稳定性.
- 评估这些MCPCM在实践热疗法应用中的潜力.
主要方法:
- 合成的MCPCM具有不同比例的FS (20-30%) 和Fe3O4NP (0-10%) 使用酸 (SA) 作为基础 (70%).
- 热导率,相位过渡温度,能量存储能力和磁性属性被描述.
- 在交替磁场下的加热速度与传统烤箱加热进行了比较.
- 在500个循环中评估了热稳定性和循环耐用性.
主要成果:
- MCPCM表现出适合的外热温度 (~51°C) 和高能储能能力 (~132 Jg-1),结晶率高于93%.
- 结合FS和Fe3O4NP,与纯SA相比,TC降低了31.8-45.4%.
- MCPCM表现出超偏磁性,使其能够有效地进行磁热转换.
- MCPCM7显示磁性加热速度比烤箱加热快7.5-13.0倍,并作为热35分钟保持治疗温度 (42-52°C).
- 证实了高热稳定性和卓越的循环耐用性 (500个循环).
结论:
- 开发的MCPCM有效地平衡了快速磁加热与低热导率.
- 这些材料由于其可调节的特性和性能,显示了先进热疗法的巨大潜力.
- 这项研究强调了基于FS的磁性PCM对实际生物医学加热应用的前景.
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