Thermal decomposition kinetics of GAP ETPE/RDX-based solid propellant

“…Glycidyl azide polymer based energetic thermoplastic elastomer (GAP‐ETPE) has a segmented structure which consists of hard segments formed by a diisocyanate with a chain extender and soft segments formed by long polymeric chains of the glycidyl azide polymer glycol. Since GAP‐ETPE was synthesized with GAP and isophorone diisocyanate, researchers have done considerable work on polymer glycol, the isocyanate and the chain extender to modify the GAP‐ETPE. Recently, it has been used as a kind of binder in composite solid propellant and gun propellants as a result of the easy processing and environmental characteristics .…”

Section: Introductionmentioning

confidence: 99%

“…Since GAP‐ETPE was synthesized with GAP and isophorone diisocyanate, researchers have done considerable work on polymer glycol, the isocyanate and the chain extender to modify the GAP‐ETPE. Recently, it has been used as a kind of binder in composite solid propellant and gun propellants as a result of the easy processing and environmental characteristics . In ETPE, the hard segments provide mechanical strength, while the soft segments provide flexibility and energy.…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrocellulose (NC) on morphology, rheological and mechanical properties of glycidyl azide polymer based energetic thermoplastic elastomer/NC blends

et al. 2017

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As a new kind of propellant binder, energetic thermoplastic elastomer (ETPE) can improve propellant recyclability and environmentally friendly disposal. The rheological behavior of the ETPE binder can be beneficial to identify suitable and safe conditions for processing ETPE propellants. In this paper, ETPE/nitrocellulose (NC) blends with different mass ratios of NC to ETPE were prepared by the physical mixing method. The heat of explosion and the morphological, thermal, mechanical and rheological properties of the resulting blends were studied systematically. It was found that the heat of explosion of ETPE/NC blends increased with increasing NC content. SEM images showed that the NC domains in the blends changed from tiny pieces to fibers with increasing NC mass ratio, which indicates phase separation in the blends. The tensile mechanical properties of the blends had a peak value when the NC content was 10 wt%, and then increased with the increasing addition of NC. The thermal behavior made clear that the ETPE and NC were partially miscible. Rheological studies on dynamic strain sweep and frequency sweep demonstrated that the content of NC in the blends had a monotonic effect on their rheological properties at 130 ∘ C. Rheological studies also showed that the rheology of the blends is dependent on temperature. The Cole − Cole and Han plots confirmed phase separation in the blends.

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“…High-energy-density materials (HEDCs) can greatly increase the energy, decrease hazard and vulnerability, and improve service life and reliability of the propellant and explosive, so it is widely utilized in weapon and equipment by many countries in the world [1][2][3][4][5][6]. Nitrogen-rich compounds have been extensively studied as one of the most promising HEDCs owing to its higher performances of high energy density, low sensitivity, and environmental acceptability [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Thermal behavior and safety of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate

Xiao¹,

Zhao²,

Luo³

et al. 2015

J Therm Anal Calorim

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The thermal decomposition behaviors of dihydroxylammonium 5,5 0 -bistetrazole-1,1 0 -diolate (TKX-50) were studied by using a C-500 type Calvet microcalorimeter at five heating rates. The kinetic and thermodynamic parameters of the first decomposition reaction were obtained. The specific heat capacity of TKX-50 was determined with a Micro-DSCIII calorimeter, and the specific heat capacity equation and the molar specific heat capacity at 298.15 K were also obtained. The self-accelerating decomposition temperature and the critical temperature of thermal explosion are 466.17 and 475.36 K, respectively. The adiabatic time-to-explosion is calculated to be a certain value between 112.65 and 113.93 s.

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Thermal decomposition kinetics of GAP ETPE/RDX-based solid propellant

Cited by 28 publications

References 30 publications

Facile preparation of 1,3,5,7-tetranitro-1,3,5,7-tetrazocane/glycidylazide polymer energetic nanocomposites with enhanced thermolysis activity and low impact sensitivity

Facile preparation of 1,3,5,7-tetranitro-1,3,5,7-tetrazocane/glycidylazide polymer energetic nanocomposites with enhanced thermolysis activity and low impact sensitivity

Effect of nitrocellulose (NC) on morphology, rheological and mechanical properties of glycidyl azide polymer based energetic thermoplastic elastomer/NC blends

Thermal behavior and safety of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate

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