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首页> 外文期刊>Journal of Applied Polymer Science >Polyether-maleimide-based crosslinked self- healing polyurethane with Diels-Alder bonds
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Polyether-maleimide-based crosslinked self- healing polyurethane with Diels-Alder bonds

机译：具有Diels-Alder键的基于聚醚-马来酰亚胺的交联自修复聚氨酯

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摘要

The Diels-Alder (DA) reaction is particularly desirable for the preparation of heat-stimuli self-healing polymeric materials because of its thermal reversibility, high yield, and minimal side reactions. Some attempts were conducted to synthesize polyether-maleimide-based crosslinked self-healing polyurethane with DA bonds (C-PEMIPU-DA) through the reactions of the prepolymer (polymeric MDI/PBA-1000) functionalized by furfuryl amine and polyether-maleimide without benzene in this study. The structures of intermediates and C-PEMIPU-DA were first confirmed by H-1-NMR, Fourier transform infrared spectroscopy, and differential scanning calorimetry. Next, the thermal reversibility and the self-healing performance of C-PEMIPU-DA were studied by H-1-NMR, polarizing optical microscopy, tensile testing, and a sol-gel process. The results show that C-PEMIPU-DA exhibited interesting properties of thermal reversibility and self-healing. The polymers could be applied to self-healing materials or recyclable materials in the fields of the repair of composite structures and aging parts because of their thermosetting properties at room temperature and thermoplasticity at higher temperatures. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41944.
机译：Diels-Alder（DA）反应因其热可逆性，高收率和最小的副反应而特别希望用于制备热刺激的自修复聚合物材料。进行了一些尝试，以通过糠胺和不含苯的聚醚-马来酰亚胺官能化的预聚物（聚合MDI / PBA-1000）的反应，合成具有DA键的聚醚-马来酰亚胺基交联自愈聚氨酯（C-PEMIPU-DA）。在这个研究中。中间体和C-PEMIPU-DA的结构首先通过H-1-NMR，傅立叶变换红外光谱和差示扫描量热法确定。接下来，通过H-1-NMR，偏振光学显微镜，拉伸试验和溶胶-凝胶法研究了C-PEMIPU-DA的热可逆性和自修复性能。结果表明，C-PEMIPU-DA表现出令人感兴趣的热可逆性和自愈特性。该聚合物由于其在室温下的热固性和在较高温度下的热塑性，因此可以用于复合结构和老化零件修复领域的自修复材料或可回收材料。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41944。

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