Compatibility of Glycidyl Azide Polymer with Hydroxyl Terminated  Polybutadiene and Plasticizers

Manu, S. K.; Varghese, Thomas; Mathew, Suresh; Ninan, K. N.

doi:10.2514/1.38145

Cited by 20 publications

(17 citation statements)

References 5 publications

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“…This is because it has a high positive heat of formation (+957 kJ kg −1 ), low detonation tendency and low glass transition temperature ( T g = −45 °C) . In addition, GAP has positive effects on the specific impulse and burning rate of solid composite propellants through the exothermic CN 3 group scission reaction . However, it has been recognized that GAP‐based propellants have certain drawbacks associated with them, such as poor machinability, low solid loading and inferior mechanical properties in energetic formulations owing to the highly polarity of azido groups and poor flexibility of the backbone.…”

Section: Introductionmentioning

confidence: 99%

Structure and mechanical properties of fluorine-containing glycidyl azide polymer-based energetic binders

Xu¹,

Ge²,

Lu³

et al. 2017

Polym. Int.

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A novel energetic polymer, fluorine‐containing glycidyl azide polymer (FGAP), was developed via an initial cationic copolymerization of epichlorohydrin and 1,1,1‐trifluoro‐2,3‐epoxypropane, followed by azidation. The structure of FGAP was confirmed using Fourier transform infrared, 1H NMR and 13C NMR spectroscopies. The molecular weight and the thermal behavior of FGAP were characterized using gel permeation chromatography, differential scanning calorimetry and thermogravimetric analysis. FGAP had a molecular weight of 2845 g mol−1, and the glass transition temperature and decomposition temperature were found to be −47.8 and 253 °C, respectively. FGAP‐based polyurethane networks were further prepared using triphenylmethane‐4,4,4‐triisocyanate as the crosslinking agent. In comparison with GAP, FGAP‐based polyurethane networks exhibited better mechanical behaviors (a tensile strength of 1.5 MPa and an elongation at break of 81.6%). The results demonstrated that FGAP might be a promising polymeric binder for future propellant formulations. © 2017 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Structure and mechanical properties of fluorine-containing glycidyl azide polymer-based energetic binders

Xu¹,

Ge²,

Lu³

et al. 2017

Polym. Int.

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“…Glycidyl azide polymer (GAP) is an azide energetic material. It is a wellrecognized energetic polymer suitable for energetic materials, such as propellants and composite explosives, because of its high energy, higher density, higher nitrogen content and lower mechanical sensitivity [17][18][19][20][21][22][23][24]. Moreover, the terminal hydroxyl group of GAP can also be easily modified through various reactions [23,24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectroscopic characterization, thermal stability and compatibility properties of energetic PVB-g-GAP copolymers

et al. 2015

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A series of new energetic polymers of poly(vinyl benzal acetal)-g-polyglycidylazides (PVB-g-GAPs) were prepared by the cross-linking reactions between poly(vinyl benzal acetal) (PVB) and four different molecular weight polyglycidylazides (GAPs), and their structures were characterized by ATR-FTIR, UV-Vis, 1 H NMR and 13 C NMR. The glass-transition temperatures of PVB-g-GAPs were evaluated by DSC method and the thermal stabilities of PVB-g-GAPs were tested by DTA and TGA methods. The results indicated that all PVB-g-GAPs exhibited good resistance to thermal decomposition up to 200°C and the thermal stability order of the four PVB-g-GAPs were PVB-g-2 # GAP (246°C) > PVB-g-3 # GAP (244°C) > PVB-g-4 # GAP (236°C) > PVBg-1 # GAP (231°C). The glass transition temperatures of PVBg-GAPs from DSC method suggested that the synthesized copolymers were thermoplastic elastomer. Moreover, the compatibilities of PVB-g-4 # GAP with the energetic components of TNT-based melt explosives (HMX, RDX, TNT and TATB) were studied by using the non-isothermal DSC method. The results indicated that PVB-g-4 # GAP exhibited good compatibility with TNT, TATB and HMX, and could be safely used in melt cast explosives.

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“…New energetic polymers such as glycidyl azide polymer (GAP), polyglycidyl nitrate (PGN), polynitromethyloxetane (PLN) and 3,3-bis(azydomethyl)oxetane (BAMO) have become one of the promising materials that could satisfy these requirements [3,4]. Among them, glycidyl azide polymer (GAP) is one of the most thoroughly studied energetic binder which its synthesis, performance, and applications have been reported in detail by several researchers [5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Poly(glycidyl nitrate-block-caprolactone-block-glycidyl nitrate) (PGN-PCL-PGN) Tri-Block Copolymer as a Novel Energetic Binder

Abrishami

Zohari

Zeynali

2017

Prop., Explos., Pyrotech.

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An energetic binder was synthesized through ring opening copolymerization of glycidyl nitrate (GLYN) with polycaprolactone (PCL) as a macroinitiator to form tri‐block copolymer PGN‐PCL‐PGN. Effect of monomer concentration, catalyst, reaction time and solvent was investigated in polymerization. Resulting tri‐block copolymer was characterized by Fourier transform infrared spectroscopy (FT‐IR), nuclear magnetic resonance spectroscopy (NMR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The DSC result shows that glass transition temperature of tri‐block copolymer (Tg=−56.2 °C) is lower than PGN (Tg=−35 °C). In optimal condition, the Mw of this polymer was obtained 2900 g/mol.

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Compatibility of Glycidyl Azide Polymer with Hydroxyl Terminated Polybutadiene and Plasticizers

Cited by 20 publications

References 5 publications

Structure and mechanical properties of fluorine-containing glycidyl azide polymer-based energetic binders

Structure and mechanical properties of fluorine-containing glycidyl azide polymer-based energetic binders

Synthesis, spectroscopic characterization, thermal stability and compatibility properties of energetic PVB-g-GAP copolymers

Synthesis and Characterization of Poly(glycidyl nitrate-block-caprolactone-block-glycidyl nitrate) (PGN-PCL-PGN) Tri-Block Copolymer as a Novel Energetic Binder

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