Solventless Extruded Double-Base (Edb) Propellant Charges—a Review of the Properties, Technology, and Applications

Fleming, J.; Rousseau, C. W.; Zebregs, M.; Driel, C.A. van

doi:10.1615/intjenergeticmaterialschemprop.v21.i3.20

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Two methods can be used to improve the mechanical properties of EMDB propellants. First, the use of NG can be substituted with other nitrate esters such as diethyleneglycol dinitrate (DEGDN), triethylenglycol dinitrate (TEGDN), trimethylolethane trinitrate (TMETN), Butyl Nitroxyethyl Nitramine (Bu-NENA) [ 4 , 6 , 7 ]. Indeed, some nitrate esters with lower sensitivity can plasticize NC better than NG.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method of Improving the Mechanical Properties of Propellant Using Energetic Thermoplastic Elastomers with Bonding Groups

Sun,

Liu,

Wang

et al. 2024

Polymers

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The relatively poor mechanical properties of extruded modified double base (EMDB) propellants limit their range of applications. To overcome these drawbacks, a novel method was proposed to introduce glycidyl azide polymer-based energetic thermoplastic elastomers (GAP-ETPE) with bonding groups into the propellant adhesive. The influence of the molecular structure of three kinds of elastomers on the mechanical properties of the resultant propellant was analyzed. It was found that the mechanical properties of the propellant with 3% CBA-ETPE (a type of GAP-ETPE that features chain extensions using N-(2-Cyanoethyl) diethanolamine and 1,4-butanediol) were improved at both 50 °C and −40 °C compared to a control propellant without GAP-ETPE. The elongation and impact strength of the propellant at −40 °C were 7.49% and 6.58 MPa, respectively, while the impact strength and maximum tensile strength of the propellant at 50 °C reached 21.1 MPa and 1.19 MPa, respectively. In addition, all three types of GAP-ETPE improved the safety of EMDB propellants. The friction sensitivity of the propellant with 3% CBA-ETPE was found to be 0%, and its characteristic drop height H50 was found to be 39.0 cm; 126% higher than the traditional EMDB propellant. These results provide guidance for studies aiming to optimize the performance of EMDB propellants.

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Section: Introductionmentioning

confidence: 99%