Structure and mechanical properties of fluorine‐containing glycidyl azide polymer‐based energetic binders. Issue 9 (24th May 2017)

• Record Type: Journal Article
• Authors: Xu, Minghui; Ge, Zhongxue; Lu, Xianming; Mo, Hongchang; Ji, Yueping; Hu, Huaiming
• Is Part Of: Polymer international. Volume 66:Issue 9(2017:Sep.)
• Page Start: 1318
• Page End: 1323
• Publication Date: 2017-05-24
• Subjects: fluorine‐containing GAP -- cationic copolymerization -- thermal behavior -- mechanical properties; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1002/pi.5394
• Languages: English
• ISSNs: 0959-8103

Abstract

Abstract: 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, 1 H NMR and 13 C 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 Abstract : A novel energetic binder, fluorine‐containing glycidyl azide polymer, was synthesized through the copolymerization of epichlorohydrin and 1, 1, 1‐trifluoro‐2, 3‐expoxypropane, followed by azidation.