期刊
JOURNAL OF MATERIALS SCIENCE
卷 56, 期 27, 页码 15268-15277出版社
SPRINGER
DOI: 10.1007/s10853-021-06267-5
关键词
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资金
- National Natural Science Foundation of China [11672040]
- State Key Laboratory of Explosion Science and Technology [YB2016-17]
- Beijing Institute of Technology Research Fund Program for Young Scholars
The study developed a novel CA/C/rGO composite material, which achieved stable electrostatic performance and ignition ability through the synergistic effect of carbon framework and graphene, further enhancing the safety and ignition performance of copper azide.
As the most promising primary explosive in micro-initiator, copper azide is eye-catching due to its outstanding detonation power, but it is limited due to its high electrostatic sensitivity and difficulty in terms of molding. In this work, we have developed a novel, green and simple strategy, based on graphene oxide modified copper-containing metal-organic framework materials, using water-soluble polyvinyl alcohol as binder to synthesize spherical copper azide/Carbon/reduced graphene oxide (CA/C/rGO) composite, in which CA nanoparticles are uniformly distributed on the porous carbon framework. Detailed characterization shows that the coordination effect of carbon framework material and graphene makes the obtained spherical CA/C/rGO have remarkable electrostatic stability and ignition ability. The obtained CA/C/rGO material has an electrostatic sensitivity of 2.0 mJ and a flame sensitivity of 45 cm, which greatly enhances its electrostatic safety and maintains good ignition performance. The CA/C/rGO is further assembled in a micro-initiator, which successfully detonates the secondary explosive hexanitrohexaazaisowurtzitane (CL-20). The manufacturing process of CA/C/rGO materials is environmentally friendly, easy to volume-produce, and can be well matched with the charging method of the micro-initiator system.
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