Improving the Mechanical Properties of Glycidyl Azide Polymeric Matrix Used in Composite Solid Rocket Propellant by Adding Advanced Cross‐Linker

Abstract

Glycidyl azide polymer (GAP) based binders have poor mechanical characteristics in comparison with hydroxyl terminated polybutadiene (HTPB) binders. In this study, advanced cross-linker was used to improve the mechanical properties of GAP binder. GAP was prepared and characterized in comparison with HTPB prepolymer. Density, characteristics groups, nitrogen content, humidity, viscosity, and milligram equivalent of (OH) per binders were determined. A cross-linker consists of trimethylol propane (TMP) and curing catalyst, dibutyltin dilaurate (DBTDL), was used as an additive to GAP polymeric matrix to enhance its functionality. Polymeric matrices based on GAP and HTPB were prepared with different curing ratio (NCO/OH) ranging from 0.7 to 1.5. Different weight percentages of cross-linker * Dr. A. Elbeih

Burning rate measurement of composite propellant using acoustic wave emission in comparison with other techniques

“…The acoustic wave emission strand burner for formulation based on GAP [23] demonstrates high burning rate and high sensitivity to pressure by comparing with formulation based on HTPB. This could be investigated to the fact that GAPis more powerful energetic binder in comparison to HTPB [28][29][30] . This also ascertain the validity of acoustic wave emission technique for different composite formulations with several operating parameters and wide range of applications [22] .…”

Studies on PBFMO-b-PNMMO alternative block thermoplastic elastomers as potential binders for solid propellants

“…strength and breaking elongation. 25,26 An overlay of the stress-strain curves of PBFMO-b-PNMMO-and PNMMObased thermoplastic elastomers is shown in Fig. 5.…”

Synthesis of Polyetheramine Based Bonding Agents and Their Effect on Mechanical Properties of an AP/CL‐20/GAP Formulation

“…Glycidyl azide polymer (GAP) composite solid propellants plasticized by nitrate esters are classical polyurethane composite materials with a highly energetic azide group (C‐N 3 group) [5–9]. To enhance the energy properties, nitramine explosives with higher energy, such as hexanitrohexaazaisowurtzitane (CL‐20), are introduced into GAP propellants [10–12].…”