Survey of New Energetic and Eco-friendly Materials
During our search for a powerful energetic plasticizers, we found that two novel tetra azido ester plasticizers, namely, tetra azido malonate and tetra azido glutarate, produced very impressive performance (PEP-2013). These energetic plasticizers are stable up to 200 °C and release heat of 1752.8 and 1774.3 J/g, respectively.
Rational design, synthesis and evaluation of new azido-ester
Finally, the compatibility and efficiency of these two new azido-ester plasticizers on the rheological and thermal properties of glycidyl azide polymer (GAP) were investigated using rheometry and DSC analyses, and compared with some common energetic plasticizers.
Rational design, synthesis and evaluation of new azido-ester
In this study, we used this method to consider the important criteria for a chemical structure as an energetic plasticizer for an energetic azido binder. The number of new azido-ester structures were initially designed, and their physicochemical and energetic properties were determined via theoretical calculation by molecular dynamics
Application of Azido Esters as Energetic Plasticizers
Narges Zohari, Fatemeh Abrishami and Nasser Sheibani, A novel simple correlation for predicting glass transition temperature of energetic azido-ester plasticizers through molecular structures, Journal of Thermal Analysis and Calorimetry, 127, 3, (2243), (2017).
Comparison of the structural and physical properties
Plasticizers are a class of materials which are added to increase not only the plasticity but also the process-ability, flexibility and durability of the propellants. Azido nitrate ester plasticizers with both –N 3 and –ONO 2 groups in the molecule have attracted great attentions. In this work, an azido nitrate ester compound (2-azidoethyl
- What is azido plasticizer?
- Azido plasticizer, a type of energetic plasticizer, possesses excellent thermal stability and low glass transition temperature. However, the incorporation of a single azido group can lead to issues such as decreased oxygen balance and reduced density. In recent years, novel azido plasticizers containing various energetic groups have been developed.
- Which reagent is used to introduce azido groups in energetic plasticizers?
- For azido groups, the introduction of azido groups in energetic plasticizers is to use -N 3 in nucleophilic reagent NaN 3 to replace halogen (-X) , trifluoromethane sulfonate (-OTf) , nitrate ester (-ONO 2) and other leaving groups.
- What is a high nitrogen content azido plasticizer?
- Two new high nitrogen content azido plasticizers were synthesized from readily available commercial reagents. Both azido esters exhibit good thermal stability with decomposition temperature of 233.50 °C and 232.60 °C and heat release of 1613.91 J/g and 2313.46 J/g for 1 and 2, respectively.
- What is azidation modification of energetic compounds?
- Azidation modification of energetic compounds allows for the preparation of a series of azido energetic plasticizers with different functional groups, such as azido nitro, azido esters, and azidonitramines [, , ]. Representative energetic plasticizers with various functional groups are depicted in Fig. 1.
- Can nitramine be used in azido plasticizers?
- In recent years, novel azido plasticizers containing various energetic groups have been developed. Among these, the introduction of a nitramine group into the azido plasticizer has shown significant improvements in oxygen balance, density, and sensitivity compatibility.
- Are azidonitramine plasticizers a promising research direction?
- This makes azidonitramine plasticizers a promising research direction in the development of energetic plasticizers. Despite the existence of approximately twenty different types of azidonitramine plasticizers over the past few decades, a comprehensive review of these compounds is lacking in the literature.
