主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (3): 383-386.

• • 上一篇    下一篇

石墨烯包覆铝粉的制备、表征及燃烧性能研究

丁小勇，方依彤，邹杨君，朱小丹   

  1. (四川轻化工大学 化学与环境工程学院，四川 自贡 643000)
  • 出版日期:2023-03-15 发布日期:2023-03-15
  • 作者简介:丁小勇（1988— ），男，四川轻化工大学讲师，博士，主要从事金属类活性材料燃烧性能方面的研究，四川省自贡市自流井区汇兴路519号，643000。
  • 基金资助:
    四川省自然科学基金项目青年科学基金项目(2022NSFC1263)；化学合成与污染控制四川省重点实验室项目(CSPC202011)；四川轻化工大学2022 年大学生创新创业训练计划项目（cx2022050）

Preparation, characterization and combustion properties of graphite-coated aluminum powder

Ding Xiaoyong, Fang Yitong, Zou Yangjun, Zhu Xiaodan   

  1. (School of Chemistry and Environment Engineering, Sichuan University of Science and Engineering, Sichuan Zigong 643000, China)
  • Online:2023-03-15 Published:2023-03-15

摘要： 为了考察石墨烯包覆对微米铝粉燃烧性能的影响规律，利用氧化还原法制备少层还原石墨烯，并采用原位还原法制备石墨烯复合铝粉，用XRD、SEM、XPS、氧弹量热法等手段分析石墨烯对铝粉的包覆效果，比较了铝粉和复合铝粉的燃烧效率。结果表明：5 nm石墨烯包覆层的铝粉较纯铝粉表现出更优异的燃烧性能，质量燃烧热为24 532 J/g，燃烧效率达到80.32%，远超纯铝粉的63.31%。基于对复合铝粉燃烧产物的表征结果，对石墨烯影响铝粉燃烧性能的机理作出了合理推测，认为石墨烯的导热性和较大的比表面积加速了铝粒子的热量传导，提升了活性铝粒子的反应参与度。

关键词: 铝粉, 石墨烯, 燃烧性能, 燃烧效率

Abstract: Abstract: In order to investigate the effect of graphene coating on the combustion performance of micro-aluminum powder, a few layers of reduced graphene were prepared by oxidation-reduction method, and graphene composite aluminum powder was prepared by in-situ reduction method. The coating effect of graphene on aluminum powder was analyzed by XRD, SEM, XPS and oxygen bomb calorimetry. The combustion efficiency of aluminum powder and composite aluminum powder was compared. The results show that the combustion performance of aluminum powder coated with 5 nm graphene is better than that of pure aluminum powder. The mass heat of combustion is 24 532 J/g, and the combustion efficiency is 80.32%, which is much higher than that of pure aluminum powder (63.31%). Based on the characterization of the combustion products of composite aluminum powder, the mechanism of graphene effect on the combustion properties of aluminum powder is reasonably inferred. It is considered that the thermal conductivity and large specific surface area of graphene accelerate the heat conduction of aluminum particles and enhance the reaction participation of active aluminum particles.

Key words: Key words: aluminum, graphene, combustion performance, combustion efficiency