基于的新型稳定形状的相变材料,具有磁性提升的充电效率和双功能热疗能力
Nguyen Bui Tam Nhu1, Ho Phuong1, Nguyen Ngoc Que Anh1
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.
ACS omega
|September 15, 2025
概括
使用1-octadecanol,烟和Fe3O4纳米粒子的新型形状稳定相变材料 (SSPCMs) 提供了增强的热性能. 这些磁性响应的SSPCM显示出对高效的热疗法应用的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 热力工程是热力工程中的一个.
背景情况:
- 换相材料 (PCM) 对于热能储存至关重要.
- 传统的PCM经常遭受低导热率和泄漏问题.
- 磁纳米粒子为增强热管理提供了潜力.
研究的目的:
- 开发新型形状稳定相变材料 (SSPCMs),其中包括1-octadecanol (OD),烟 (F-SiO2) 和Fe3O4纳米粒子.
- 研究合成的SSPCM的导热性,储热能力和磁性.
- 评估这些SSPCM在热疗应用中的潜力.
主要方法:
- 合成具有不同OD (50-80%) 和Fe3O4 (5.0-12.5%) 含量的OD/F-SiO2/Fe3O4 SSPCMs.
- 关于SSPCM的孔隙性,导热性 (TC),储热能力和热循环耐久性的表征.
- 在交替磁场下评估磁热转换和热治疗性能.
主要成果:
- F-SiO2有效稳定高达70%的OD,防止液体泄漏.
- 70% OD/F-SiO2/Fe3O4 SSPCM 显示出高储热能力 (147.6 J/g) 和在 500 个循环中优异的耐用性.
- SSPCM显示了降低的导热率 (0.156-0.193 W/(m·K)) 和通过磁热效应增强的充电.
- 在交替磁场下,在360秒内从~34°C到76°C的快速加热.
- 一个热证明了双功能热疗法 (50-55°C30分钟,40-50°C16分钟).
结论:
- 开发的OD/F-SiO2/Fe3O4 SSPCM具有较低的导热率和磁性增强的充电效率.
- 这些SSPCM表现出卓越的热稳定性,热储能和磁性响应.
- 由于其双功能加热能力,SSPCM显示出实际热疗应用的巨大潜力.
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