Tuning the micro‐structure, laser ignition, and isovolumetric burning performance of nitrocellulose propellant via incorporation of graphene oxide

Shi, Xiaohong; Luo, Chuan; Liu, Tian; Zeng, Ke; Yang, Liu; Pei, Chonghua

doi:10.1002/pc.27315

Cited by 3 publications

References 50 publications

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Constructing independent CNTs conductive network to boost combustion performance of metastable intermixed composites

Yang,

Liu,

Meng

et al. 2024

Polymer Composites

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Novel metastable intermixed composites (MICs) constructed by carbon nanomaterials are expected to achieve high energy content and high combustion efficiency, but traditional preparation technologies always bring barely improvement in performance. Herein, novel PVDF/CuO/Al@CNTs MICs with independent continuous carbon nanotubes (CNTs) conductive networks were prepared by thoroughly utilizing the conductivity and photothermal properties of CNTs. A conductive network can be constructed at the interface of each encapsulated PVDF/CuO/Al particle with the addition of >0.5 wt% CNTs. The great increase in electrical and thermal conductivity of PVDF/CuO/Al@CNTs MICs indicates excellent energy transfer efficiency across the sample. Significant enhancement of the combustion reaction has been achieved, with the minimum ignition energy and ignition delay time of PVDF/CuO/Al@CNTs3 reduced by ~31% and ~50%, respectively. This indicates that the CNTs with unique photothermal properties can be utilized as an effective igniter. Moreover, the optimal PVDF/CuO/Al@CNTs1 MICs enhanced the pressurization rate (~300%), energy output (~55%), and combustion velocity (~200%). The mechanism of the fast combustion reaction can also be discussed by the weak interface interaction and the energy conductive of the CNTs network throughout the sample. This work provides a modern strategy for strong combustion MICs that can be generalized and applied in the field of energetic materials.Highlights An independent continuous CNTs conductive network was prepared with a small amount of CNTs. The electrical and heat conversion efficiency is greatly improved. CNTs with unique photothermal properties can be utilized as an effective igniter. The laser sensitivity is improved, and the reaction energy, pressure, and pressure rates are significantly increased. The combustion performance was significantly improved, and more intense, and the combustion speed was significantly increased.

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Constructing independent CNTs conductive network to boost combustion performance of metastable intermixed composites

Yang,

Liu,

Meng

et al. 2024

Polymer Composites

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Facile incorporation of optical sensitizers into nitrocellulose aerogels for improved laser ignition and combustion

Yan,

Zhang,

et al. 2024

Adv Compos Hybrid Mater

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Facile Incorporation of Optical Sensitizers into Nitrocellulose Aerogels for Improved Laser Ignition and Combustion

Yan

Zhang

Baghi

et al. 2023

Preprint

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We demonstrate a straightforward and effective method to achieve uniform infiltration of optical sensitizers into nitrocellulose aerogels using a sol-gel method followed by supercritical carbon dioxide drying. The optical sensitizers employed in this study include gold nanoparticles (AuNPs) capped with self-assembled monolayers of hydroxyl and/or carboxylic functional groups (i.e., OH-AuNPs and COOH-AuNPs) as well as carboxylated multi-walled carbon nanotubes (c-MWCNTs). The resulting robust, monolithic aerogels were characterized in detail by using scanning electron microscopy (SEM), specific surface area measurements, differential scanning colorimetry (DSC), and laser initiation and combustion. Although the composite aerogels exhibited similar surface areas, morphologies, and microstructures as pure nitrocellulose aerogels, they exhibited increased sensitivity to laser stimuli and demonstrated improved combustion properties compared to pure nitrocellulose aerogels. We attribute these enhanced performances to the possible increase in photothermal conversion and thermal conductivity facilitated by the incorporation of optical sensitizers within the aerogels. This study offers valuable insights into the design and development of advanced nitrocellulose-based energetic materials, potentially leading to advancements in laser initiation and combustion technologies.

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Tuning the micro‐structure, laser ignition, and isovolumetric burning performance of nitrocellulose propellant via incorporation of graphene oxide

Cited by 3 publications

References 50 publications

Constructing independent CNTs conductive network to boost combustion performance of metastable intermixed composites

Constructing independent CNTs conductive network to boost combustion performance of metastable intermixed composites

Facile incorporation of optical sensitizers into nitrocellulose aerogels for improved laser ignition and combustion

Facile Incorporation of Optical Sensitizers into Nitrocellulose Aerogels for Improved Laser Ignition and Combustion

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