CHINESE JOURNAL OF ENERGETIC MATERIALS
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GAP基自修复粘结剂的制备及性能
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南京理工大学 化工学院

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国防科技项目基金 0106069国防科技项目基金(0106069)


Preparation and Performance of Self-healing Binder Based on GAP
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School of Chemistry Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

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    摘要:

    为了延长粘结剂的储存寿命,采用一步法将具有可自修复性能的双硫官能团引入叠氮粘结剂中,首次合成了具有自修复性能的聚叠氮缩水甘油醚(GAP)基自修复粘结剂。通过傅里叶红外光谱(FTIR)、X射线衍射(XRD)和光学显微镜对其结构和表面形貌进行表征,在此基础上,通过自修复前后拉伸强度的变化,考察了不同自修复温度和不同自修复时间下的自修复效率。结果显示:合成的GAP基自修复粘结剂具有聚氨酯结构,60 ℃下24 h后表面裂纹基本愈合完全。提高自修复温度和延长自修复时间,均有助于提高体系的自修复效率。同时随着交联剂质量分数的增加,自修复效率先提高后降低,其中交联剂质量分数为8%的配方,自修复效率可达98.2%,相对于自修复效率为61.7%的对比样,表明双硫官能团的引入能够提高体系的自修复效率。

    Abstract:

    To prolong the storage life of binder, the poly(glycidyl azide) ether(GAP)-based binders with self-healing performance were firstly synthesized by introducing disulfide functional group into an azide binder through an one-step method. Fourier transform infrared spectroscopy(FTIR), X-ray diffractometry(XRD) and optical microscopy were used to characterize its structure and surface topography characterization. On this basis, the self-healing efficiency under different self-healing temperature and different self-healing time was examined through the change of tensile strength before and after self-healing. Results show that the synthesized GAP-based self-healing binder has a polyurethane structure, the surface cracks of self-healing binder are completely healed after 24 h at 60 ℃. Increasing the temperature and prolonging the self-healing time are helpful to improve the self-healing efficiency. At the same time, the self-healing efficiency is firstly improved and then decreased with increasing mass fraction of the cross-linking agent, in which, the self-healing efficiency for the formula with a cross-linker mass fraction of 8% can reach 98%. Compared with control sample with the self-healing efficiency as 61.7%, which proves that the introduction of disulfide functional groups can improve the self-healing efficiency of the system.

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引用本文

菅晓霞,宋育芳,赵盟辉,等. GAP基自修复粘结剂的制备及性能[J].含能材料, 2019, 27(2):131-136. DOI:10.11943/CJEM2018169.
JIAN Xiao-xia, SONG Yu-fang, ZHAO Meng-hui, et al. Preparation and Performance of Self-healing Binder Based on GAP[J]. Chinese Journal of Energetic Materials, 2019, 27(2):131-136. DOI:10.11943/CJEM2018169.

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历史
  • 收稿日期: 2018-06-26
  • 最后修改日期: 2018-11-30
  • 录用日期: 2018-09-07
  • 在线发布日期: 2018-10-31
  • 出版日期: 2019-02-25