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首页> 外文期刊>Journal of Applied Polymer Science >Self-healing semi-IPN materials from epoxy resin by solvent-free furan-maleimide Diels-Alder polymerization
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Self-healing semi-IPN materials from epoxy resin by solvent-free furan-maleimide Diels-Alder polymerization

机译：通过溶剂无溶剂呋喃 - 马来酰亚胺Diels-桤木聚合从环氧树脂自愈的半IPN材料

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摘要

Novel self-healing Diels-Alder (DA) polymer and the corresponding semi-interpenetrated polymer networks (semi-IPNs) were synthesized and characterized. Initially, a furan-functionalized resin (FFR) was synthesized through the ring-opening reaction of a conventional epoxy resin [diglycidyl ether bisphenol A (DGEBA)] with furfuryl alcohol as a bio-based compound. Subsequently, semi-IPNs with different compositions were obtained through the blending of DGEBA, FFR, 4,4 '-diaminodiphenylmethane, and 1,1 '-(methylenedi-1,4-phenylene) bismaleimide in the molten state by following a predetermined time-temperature program. Fourier transform infrared and nuclear magnetic resonance analyses confirmed the successful synthesis of the materials. Thermoreversibility via retro-DA (rDA) reaction was evidenced by differential scanning calorimetry (DSC) and sol-gel transition tests. Repeated DSC cycle was successfully performed thrice on the DA polyadduct which corroborated repeatability of the DA/rDA association/dissociation. Self-healing and mechanical properties were preliminarily evaluated by scanning electronic microscopy and flexural testing analyses, respectively. The self-healing efficiencies were around 80 and 95% for semi-IPN and DA polyadduct, respectively, based on flexural strength. (c) 2019 Wiley Periodicals, Inc.
机译：合成和表征新型自我愈合Diels-Alder（DA）聚合物和相应的半渗透性聚合物网络（半IPNS）。最初，通过常规环氧树脂[二缩水甘油醚双酚A（DGEBA）]用糠醇作为生物基化合物来合成呋喃官能化树脂（FFR）。随后，通过在预定时间内通过将DGEBA，FFR，4,4'-二胺二烷基甲烷和1,1' - （甲基二-1,4-亚苯基）二铋和1,1' - （甲基二-1,4-亚苯基）二铋获得的半IMN - 期限。傅里叶变换红外和核磁共振分析证实了材料的成功合成。通过差示扫描量热法（DSC）和溶胶 - 凝胶过渡试验证明了通过Ricro-Da（RDA）反应的热反应。在DA Polyaddincuct上成功地进行了重复的DSC循环，该达米达到DA PolyAddycuct在DA / RDA关联/解离的可重复性上进行。通过扫描电子显微镜和弯曲测试分析，预先评估自我愈合和机械性能。基于弯曲强度，分别为半IPN和DA Polyadduct的自我愈合效率约为80％和95％。 （c）2019 Wiley期刊，Inc。

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