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首页> 外文期刊>Journal of Applied Polymer Science >Polyurethane acrylate/epoxy-amine acrylate hybrid polymer networks
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Polyurethane acrylate/epoxy-amine acrylate hybrid polymer networks

机译：聚氨酯丙烯酸酯/环氧胺丙烯酸酯杂化聚合物网络

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摘要

New classes of hybrid polymer networks (HPNs), having variable polyurethane acrylate (PUA) and epoxy-amine acrylate (EAA) compositions, were prepared using initially miscible systems in methyl methacrylate (MMA). The initial systems were based on PUA prepolymer and EAA monomer solutions in MMA. HPNs were a result of epoxy-amine and radical polymerization competition. Phase separation occurred during the course of HPN formation. Mechanical dynamic analysis of the prepared HPNs showed good affinity between the PUA and PMMA phases and lower affinity between the EAA and PMMA phases. Mechanical property evolution and transmission electronic microscopy showed that, for all the composition ranges used in this study (PUA/EAA/PMMA 15/45/40-45/15/40 wt %), the PUA-rich phase was the continuous phase. EAA-rich phases, 20-50 nm, in the PUA-rich matrix were obtained for HPNs containing up to 30 wt % EAA. For higher EAA concentration (45 wt %), 2 mu m EAA-rich phases were obtained in the PUA-rich matrix. A substructure was also observed in each phase. PUA/EAA copolymers were prepared and used successfully for the compatibilization of the different phases of the HPNs. (C) 2000 John Wiley & Sons, Inc. [References: 12]
机译：使用最初在甲基丙烯酸甲酯（MMA）中可混溶的体系，制备了具有可变聚氨酯丙烯酸酯（PUA）和环氧胺丙烯酸酯（EAA）组成的新型混合聚合物网络（HPN）。最初的系统基于MMA中的PUA预聚物和EAA单体溶液。 HPN是环氧胺和自由基聚合竞争的结果。在HPN形成过程中发生相分离。制备的HPN的机械动力学分析表明，PUA和PMMA相之间具有良好的亲和力，而EAA和PMMA相之间具有较低的亲和力。力学性能演变和透射电子显微镜显示，对于本研究中使用的所有组成范围（PUA / EAA / PMMA 15/45 / 40-45 / 15/40 wt％），富含PUA的相均为连续相。对于含有最多30 wt％EAA的HPN，在富含PUA的基质中获得了20-50 nm的富含EAA的相。对于更高的EAA浓度（45 wt％），在富含PUA的基质中获得了2μm的富含EAA的相。在每个阶段还观察到一个子结构。制备了PUA / EAA共聚物，并将其成功用于HPNs不同相的增容。 （C）2000 John Wiley＆Sons，Inc. [参考：12]

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