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用石墨烯基复合物作为催化剂嵌入的核心Al@CL-20复合材料的制备和反应
Zhiyuan Feng1, Minghui Yu1, Ruixuan Xu1
1National Key Laboratory of Solid Rocket Propulsion, Northwestern Polytechnical University, Xi'an 710072, China.
在 (Al) 上涂上微尺度氧化剂可以改善其在固体推进剂中的燃烧. 这项研究使用石墨烯氧化物-碳水化合物复合物增强了Al@CL-20复合物,显著提高了反应热量和燃烧效率.
科学领域:
- 材料科学 材料科学 材料科学
- 燃烧化学 燃烧化学是什么
- 纳米技术 纳米技术
背景情况:
- (Al) 的不完全燃烧是固体推进剂配方中的一个关键挑战.
- 微尺度氧化剂涂层是提高Al燃烧效率的有希望的策略.
研究的目的:
- 准备和研究Al@CL-20复合物与多多巴胺接口层.
- 评估石墨烯氧化物 (GO) 和石墨烯基碳水化合物复合物 (GO-CHZ-M) 对复合材料性能和燃烧性能的影响.
主要方法:
- 合成Al@CL-20复合物与多多巴胺中间层.
- 在复合材料中加入GO和GO-CHZ-M (M=Co2+,Ni2+).
- 对结构,反应热量,热分解和燃烧性能进行全面分析.
主要成果:
- 与机械混合物相比,Al@CL-20复合材料表现出更高的反应热量 (6482 J g-1).
- 添加GO-CHZ-Co使反应热量增加到6729 Jg-1,并将激活能量降低了54.8%.
- 点火延迟时间从5.1ms减少到4.2ms,燃烧产品颗粒大小 (D50) 减少,表明改善了Al燃烧效率.
结论:
- 聚多巴胺接口层有效地改善了Al@CL-20复合材料的燃烧.
- 基于石墨烯的碳水化合物复合物,特别是GO-CHZ-Co,协同增强反应热量和燃烧效率.
- 开发的复合材料为改善固体推进剂性能提供了可行的解决方案.
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