Preparation and characterization of RDX based composite energetic materials with a cellulose matrix
Cyclotrimethylenetrinitramine (RDX)‐based high‐energy explosives are widely used in weapon warheads, propellants, and ammunition. Many studies have explored different supporting structures for RDX; however, the use of natural materials have rarely has been reported. Natural cellulose is widely known...
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Veröffentlicht in: | Journal of applied polymer science 2021-05, Vol.138 (18), p.n/a |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Cyclotrimethylenetrinitramine (RDX)‐based high‐energy explosives are widely used in weapon warheads, propellants, and ammunition. Many studies have explored different supporting structures for RDX; however, the use of natural materials have rarely has been reported. Natural cellulose is widely known for its excellent compatibility and loading capacity. In this study, cellulose was used as a supporting structure and insensitive material for RDX composites. Cellulose/RDX composite aerogels (RCAs) were prepared using 1‐allyl‐3‐methyl imidazole (AMIMCl) as the solvent, and their properties were characterized. The results show that the content of nitrogen in cellulose/RCAs was 34.5%, and the content of RDX was as high as 94.3%. Moreover, RDX particles were attached to the fibers inside the cellulose aerogels (CAs), forming a homogeneous protective layer on the surface of the cellulose matrix. Compared with the raw RDX material, the thermal stability of the cellulose/RDX energetic aerogels was greatly increased. The porosity of the CAs was reduced due to RDX particles growing inside the CAs. The impact sensitivity increased from 35 to 78 cm.
RDX is one of the most widely used high‐energy explosives. However, RDX cannot be used alone because of the high impact and friction sensitivity. The cellulose aerogels with excellent properties provide a basis for improving RDX performance. The stable 3D network structure and protective layer structure of cellulose aerogels can reduce the impact and friction sensitivity of RDX more obviously. What is more noteworthy is that cellulose as a natural polymer additive, which provides a basis for the research of environmentally‐friendly composite energetic materials. |
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ISSN: | 0021-8995 1097-4628 |
DOI: | 10.1002/app.50329 |