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Encapsulation of fluororubber/nitrocellulose to improve the ignition and combustion of aluminum particles.

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Title: Encapsulation of fluororubber/nitrocellulose to improve the ignition and combustion of aluminum particles.
Authors: Kong, Hao1 (AUTHOR), Xu, Siyu1,2 (AUTHOR) xusy99@163.com, Yan, Xiaolong1 (AUTHOR), Yun, Yan1,3 (AUTHOR) yanyun@email.sdu.edu.cn, Chen, Fang1,4 (AUTHOR) chenfang@bit.edu.cn, Jiang, Hanyu2 (AUTHOR), Yao, Ergang2 (AUTHOR), Tian, Shudong1 (AUTHOR), Huang, Taizhong1 (AUTHOR) chm_huangtz@ujn.edu.cn
Source: Fuel (0016-2361). Jun2026, Vol. 414, pN.PAG-N.PAG. 1p.
Subjects: Nitrocellulose, Fluoroelastomers, Composite materials, Combustion engineering, Fuel additives, Aluminum powder, Surface coatings
Abstract: The encapsulation of fluoroelastomer/nitrocellulose improves the ignition and combustion of aluminum particles. [Display omitted] • Fluororubber/nitrocellulose (F2603/NC) encapsulated Al is prepared. • Ignition and combustion of Al is improved by the encapsulation of F2603/NC. • Combustion improvement mechanism of F2603/NC encapsulated Al is established. • F2603/NC encapsulated Al can enhance the work performance of energetic materials. Aluminum-based materials, with the theoretical calorific value of 30.5 kJ/g, have become an important additive in fireworks, high energy fuels and weapon fields. However, the application of traditional micron-sized aluminum powder still suffers from the issue of oxide layer, severe agglomeration, low combustion efficiency (< 80 %), etc. In this paper, we report the preparation of aluminum-based composite material that encapsulated by fluororubber (F2603) and nitrocellulose (NC). The encapsulation of F2603/NC prevent the deep oxidation and improve the ignition and combustion of Al powder. Photo morphology, SEM and FTIR tests prove the successful encapsulation. BET test show that the F2603/NC form a mesoporous encapsulation layer on the surface of Al powder and the specific surface area of the composite is as double as that of the pristine Al powder. Lase ignition and combustion tests show that the ignition delay time of the composite shortens to 31 ms, which is only half of that of the pristine Al powder. The calorific value of the F2603/NC encapsulated Al surpassed 28 kJ/g, which is about 10 % higher than that of the pristine Al. Based on the DTA tests with different heating rates, it is calculated that the combustion activation energy is about 124–130 kJ/mol. The Al-F2603/NC composite can be molded into different shape by facile method, which can meet the demand of higher energy density field, such as fireworks, propellants etc. The results of the paper show that the encapsulation of fluororubber/nitrocellulose is an effective way to improve the combustion performances and widen the application fields of Al based materials. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:The encapsulation of fluoroelastomer/nitrocellulose improves the ignition and combustion of aluminum particles. [Display omitted] • Fluororubber/nitrocellulose (F2603/NC) encapsulated Al is prepared. • Ignition and combustion of Al is improved by the encapsulation of F2603/NC. • Combustion improvement mechanism of F2603/NC encapsulated Al is established. • F2603/NC encapsulated Al can enhance the work performance of energetic materials. Aluminum-based materials, with the theoretical calorific value of 30.5 kJ/g, have become an important additive in fireworks, high energy fuels and weapon fields. However, the application of traditional micron-sized aluminum powder still suffers from the issue of oxide layer, severe agglomeration, low combustion efficiency (< 80 %), etc. In this paper, we report the preparation of aluminum-based composite material that encapsulated by fluororubber (F2603) and nitrocellulose (NC). The encapsulation of F2603/NC prevent the deep oxidation and improve the ignition and combustion of Al powder. Photo morphology, SEM and FTIR tests prove the successful encapsulation. BET test show that the F2603/NC form a mesoporous encapsulation layer on the surface of Al powder and the specific surface area of the composite is as double as that of the pristine Al powder. Lase ignition and combustion tests show that the ignition delay time of the composite shortens to 31 ms, which is only half of that of the pristine Al powder. The calorific value of the F2603/NC encapsulated Al surpassed 28 kJ/g, which is about 10 % higher than that of the pristine Al. Based on the DTA tests with different heating rates, it is calculated that the combustion activation energy is about 124–130 kJ/mol. The Al-F2603/NC composite can be molded into different shape by facile method, which can meet the demand of higher energy density field, such as fireworks, propellants etc. The results of the paper show that the encapsulation of fluororubber/nitrocellulose is an effective way to improve the combustion performances and widen the application fields of Al based materials. [ABSTRACT FROM AUTHOR]
ISSN:00162361
DOI:10.1016/j.fuel.2026.138323