Metal organic frameworks modification of carbon fiber composite interface
Metal organic frameworks modification of carbon fiber composite interface
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DOI：
10.1016/j.compositesb.2021.109197
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发表时间：
2021-11
影响因子：
13.1
通讯作者：
S. Ayyagari;M. Al-Haik;Yixin Ren;A. Abbott;E. Trigg;B. Zheng;H. Koerner
中科院分区：
文献类型：
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作者：
S. Ayyagari;M. Al-Haik;Yixin Ren;A. Abbott;E. Trigg;B. Zheng;H. Koerner
碳纤维增强聚合物复合材料（CFRPs）由于界面性能不足而容易发生分层。通过化学处理或在界面处使用更硬的纳米材料，进行了几种补救措施来增强纤维/基体界面。然而，其中一些治疗方法本质上是破坏性的，而另一些则是不可扩展的。这项研究证实了一种开发混合增强材料的新方法，该复合增强材料包括碳纤维和金属有机框架（MOFs）。mof的生长具有可扩展性，对纤维无破坏性，并且易于定制以控制界面上mof的多孔形态。此外，该研究还证明了利用mof作为催化剂在碳纤维上生长碳纳米管（CNTs）的可行性。通过显微镜、拉曼分析、广角x射线散射（WAXS）和傅里叶变换红外光谱（FTIR）对mof的微观结构进行了研究。采用热重分析（TGA）探讨了mof对纤维热稳定性的影响，采用接触角分析探讨了不同表面改性对纤维亲水性的影响。通过拉伸、动态力学分析（DMA）和剪切搭接等力学表征，研究了MOFs对复合材料结构性能的影响。在界面上放置mof可以提高复合材料的强度，将阻尼参数提高500%，将复合材料的玻璃化转变温度提高20°C，并将剪切搭接强度降低40%。
Carbon fiber reinforced polymeric composites (CFRPs) are prone to delamination due to insufficient interfacial properties. Several remedies were carried out to enhance the fiber/matrix interfaces via chemical treatments or utilizing stiffer nanomaterials at the interface. However, some of these treatments are destructive in nature and others are non-scalable. This investigation corroborates a novel methodology for developing hybrid reinforcements that comprise carbon fibers and metal organic frameworks (MOFs). The growth of MOFs is scalable, non-destructive to the fibers, and easily tailorable to control the porous morphologies of the MOFs at the interface. Furthermore, the study demonstrates the feasibility of utilizing the MOFs as a catalyst to grow carbon nanotubes (CNTs) on the carbon fibers. The microstructure of the MOFs was examined via microscopy, Raman analysis, wide-angle X-Ray scattering (WAXS), and Fourier-transform infrared spectroscopy (FTIR). The effects of the MOFs on the fiber thermal stability was probed using thermogravimetric analysis (TGA), while contact angle analysis was employed to probe the effect of the different surface modifications on the fibers hydrophilicity. Several mechanical characterizations including tensile, dynamic mechanical analysis (DMA) and shear lap joint were carried out to discern the effects of the MOFs on the composite structural performance. Several improvements emanated from the MOFs placement on the interface including improving the strength, enhancing the damping parameter by 500%, increasing the glass transition temperature of the composite by 20 °C and alleviating the shear lap joint strength by 40%.