与混合热电纳米流体在不同温度下的HLB值相关的属性
Rong-Tsu Wang1, Jung-Chang Wang2
1Department and Graduate Institute of Information Management, Yu Da University of Science and Technology (YDU), Miaoli County 36143, Taiwan.
Polymers
|February 24, 2024
概括
含有TiO2和CuO纳米粒子的混合纳米流体的最佳水性-脂性平衡 (HLB) 值为13. 这个HLB值增强了悬挂稳定性和热电导电性,这对于先进材料应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 物理化学 物理化学
背景情况:
- 混合纳米流体为各种应用提供了增强的性能.
- 控制纳米粒子分散对于纳米流体性能至关重要.
- 水-脂平衡 (HLB) 是乳化剂选择的一个关键参数.
研究的目的:
- 研究HLB值对TiO2和CuO混合纳米流体的热电导电性和悬浮稳定性的影响.
- 为了确定增强纳米流体性能的最佳HLB值.
- 为了评估不同聚合物-乳化剂组合的有效性.
主要方法:
- 使用两步合成方法来制备混合纳米流体.
- 使用了具有不同HLB值 (12-15) 的聚合物乳化剂 (Span/Tween组合).
- 纳米粒子大小,Zeta潜力和热电导率在20°C至50°C的温度下进行测量.
主要成果:
- 13的HLB值产生了最小的粒子大小 (170纳米) 和最高的Zeta电位 (-30mV),表明了卓越的稳定性.
- 峰值热电导率为1.46 W/m·K,在HLB为13.0时实现.
- 最佳的HLB值可能因乳化剂的类型和温度而异.
结论:
- HLB值显著影响混合纳米流体的稳定性和热电特性.
- 13的HLB被确定为测试的TiO2和CuO混合纳米流体系统的最佳值.
- 这些发现为设计用于热管理应用的稳定和高效纳米流体提供了宝贵的见解.
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