用平衡分子动力学模拟来燃烧涂层纤维素/乙醇/乙太分子的纳米粒子
Yue Chu1, Lei Wang1, Pingan Liu1,2
1Harbin Engineering University, Harbin 150001, China.
ACS omega
|September 18, 2023
概括
用纤维素 (NC) 涂覆纳米粒子 (ANPs) 提高了它们的稳定性和燃烧性. 这种NC涂层通过优化储存和燃烧性能来提高ANP在高能耗材料中的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 能量材料 能量材料
背景情况:
- 纳米颗粒 (ANP) 具有很高的反应性,但容易被氧化剂去活化.
- 提高ANP的表面性能对于它们在能量材料中的应用至关重要.
研究的目的:
- 为了提高纳米颗粒 (ANPs) 的表面性能和燃烧性能.
- 为了研究酸纤维素 (NC) /乙醇/以太涂层对ANP的被动化效应.
主要方法:
- 用酸纤维素 (NC) /乙醇/乙太溶液涂覆经过化的ANP.
- 在点火和燃烧过程中对涂层和未涂层ANP进行比较分析.
- 燃烧过程中表面被动化和原子行为的表征.
主要成果:
- 该NC/乙醇/乙太涂层形成了一个密集的层,通过物理和化学吸附使ANP无源化.
- 该涂层通过增加局部O2密度和表面温度来增强ANP点火,从而导致更短的点火延迟和更低的点火温度.
- NC分子的分解提高了燃烧速度,持续时间和效率,改善了ANP的整体性能.
结论:
- NC涂层有效地使ANP无活化,改善其储存稳定性和燃烧特性.
- 增强的ANP在能量材料应用中表现出卓越的性能.
- 这种被动化策略为开发先进的能量材料提供了一个有前途的途径.
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