Preparation of Energetic Thermoplastic Elastomers and their Incorporation into Greener Insensitive Melt Cast Explosives


  1. Ampleman, G.
  2. Marois, A.
  3. Brousseau, P.
  4. Thiboutot, S.
  5. Trudel, S.
  6. Béland, P.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN)
For years, DRDC Valcartier has been developing energetic thermoplastic elastomers (ETPEs) based on linear Glycidyl Azide Polymers (GAPs). The latest ETPEs developed at DRDC Valcartier are copolyurethane thermoplastic elastomers. These copolymers were solubilised in melted trinitrotoluene (TNT) and incorporated into explosive formulations to get insensitive melt cast explosives. The damping effect from the polymeric ETPEs gave the insensitive character and as a result, an insensitive explosive formulation named XRT for eXperimental Rubbery TNT was developed and later led directly to the development of the new insensitive recyclable green explosive (GIM). Work was conducted on GIM explosives to test their performance and sensitivity, their fate and behaviour into the environment, their recycling and their value as ingredients to produce a green weapon based on these concepts. Since ETPEs are recyclable, the recycling and reuse of the new formulations at the end of their life cycle was studied. During the testing of the GIM explosives, ageing tests revealed that exudation of the commercially produced ETPE occurred over a long period of time, jeopardizing the use of these ETPEs in these explosive formulations. Intense work was conducted on this commercial polymer to understand the issues and solutions were found. This paper will describe the syntheses of the new ETPEs and the solutions proposed to solve the exudation issue. Furthermore, the preparations of the GIM explosives and
Report Number
DRDC-VALCARTIER-SL-2012-115 — Scientific Literature
Date of publication
01 Jun 2012
Number of Pages
Electronic Document(PDF)

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