CHINESE JOURNAL OF ENERGETIC MATERIALS
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端环氧基聚缩水甘油醚硝酸酯的合成及固化
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(黎明化工研究设计院有限责任公司, 河南 洛阳 471000)

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王伟(1967-),女,教授级高工,主要从事有机及高分子合成研究。e-mail: wangw1557@126.com

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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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    摘要:

    针对聚缩水甘油醚硝酸酯 (PGN) 与异氰酸酯固化反应易受环境水分影响、固化稳定性较差等问题, 合成了端环氧基聚缩水甘油醚硝酸酯 (e-PGN)。采用红外 (IR)、核磁 (NMR) 和凝胶渗透色谱 (GPC) 进行了结构表征。测试了改性前后聚合物的主要物化性能。e-PGN的玻璃化转变温度、粘度、密度、热分解温度等主要物性与PGN的主要物性相近。研究了e-PGN与几种环氧固化剂[咪唑 (IMD)、邻苯二甲酸酐 (PA)、N-乙基乙二胺 (NEED)、异佛尔酮二胺 (IPDA) 等]的固化反应。结果表明, e-PGN可与IMD、PA、NEED、IPDA等在60 ℃/70 ℃下反应固化, 其中以PA为固化剂时, 固化物力学性能最好, 拉伸强度为0.912 MPa, 断裂伸长率为354%;室温贮存8个月的固化试样其力学性能基本不变。

    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. DOI:10.11943/j. issn.1006-9941.2017.01.008.
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. DOI:10.11943/j. issn.1006-9941.2017.01.008.

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历史
  • 收稿日期: 2016-04-27
  • 最后修改日期: 2016-08-24
  • 录用日期: 2016-08-09
  • 在线发布日期: 2017-01-19
  • 出版日期: 2017-01-20