CHINESE JOURNAL OF ENERGETIC MATERIALS
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Synthesis and Curing of Epoxy-teminated Poly(glycidyl nitrate)
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(Liming Chemical Research and Design Institute Co.,Ltd., Luoyang 471000, China)

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    Abstract:

    The reaction between the end hydroxyl of poly (glycidyl nitrate)(PGN) and isocyanates is easily affected by ambient moisture, and the curing stability is poor. Aiming at these problems, epoxy-terminated poly (glycidyl nitrate) (e-PGN) was synthesized. Its structure was characterized by infrared spectroscopy (IR), nuclear magnetic resonance (NMR) and gel permeation chromotagraph (GPC), and its major physiochemical properties were tested. The main physical properties of e-PGN, such as glass transition temperature, viscosity, density, thermal decomposition temperature, were close to those of PGN. The curing reactions of e-PGN with epoxy curing agents, such as imidazole (IMD), o-phthalic anhydride (PA), n-ethylethylenediamine (NEED) and isophorone diamine (IPDA) were studied. Results show that the curing reaction of e-PGN with IMD, PA, NEED and IPDA at 60 ℃/70 ℃ can be performed. When PA is used as curing agent, the mechanical properties of the cured material outperformed; the tensile strength is 0.912 MPa, and the elongation at break is 354%. In addition, the mechanical properties of the cured samples stored at room temperature for 8 months remained almost unchanged.

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王伟,韩世民,张得亮,等.端环氧基聚缩水甘油醚硝酸酯的合成及固化[J].含能材料,2017,25(1):49-52.
WANG Wei, HAN Shi-min, ZHANG De-liang, et al. Synthesis and Curing of Epoxy-teminated Poly(glycidyl nitrate)[J]. Chinese Journal of Energetic Materials,2017,25(1):49-52.

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History
  • Received:April 27,2016
  • Revised:August 24,2016
  • Adopted:August 09,2016
  • Online: January 19,2017
  • Published: January 20,2017