MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin, China.
Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecualr Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
ACS Appl Mater Interfaces. 2017 Feb 15;9(6):5590-5599. doi: 10.1021/acsami.6b15098. Epub 2017 Feb 1.
The nanoporous metal-organic frameworks (MOFs) "armor" is in situ intergrown onto the surfaces of carbon fibers (CFs) by nitric acid oxidization to supply nucleation sites and serves as a novel interfacial linker between the fiber and polymer matrix and a smart cushion to release interior and exterior applied forces. Simultaneous enhancements of the interfacial and interlaminar shear strength as well as the tensile strength of CFs were achieved. With the aid of an ultrasonic "cleaning" process, the optimized surface energy and tensile strength of CFs with a MOF "armor" are 83.79 mN m and 5.09 GPa, for an increase of 102% and 11.6%, respectively. Our work finds that the template-induced nucleation of 3D MOF onto 1D fibers is a general and promising approach toward advanced composite materials for diverse applications to meet scientific and technical demands.
纳米多孔金属-有机骨架（MOF）“装甲”通过硝酸氧化原位生长在碳纤维（CF）表面上，提供成核点，并作为纤维和聚合物基体之间的新型界面连接体以及智能缓冲层，以释放内部和外部施加的力。同时提高了 CF 的界面剪切强度、层间剪切强度和拉伸强度。借助超声“清洗”工艺，具有 MOF“装甲”的 CF 的优化表面能和拉伸强度分别为 83.79 mN m 和 5.09 GPa，分别提高了 102%和 11.6%。我们的工作发现，3D MOF 在 1D 纤维上的模板诱导成核是一种通用且有前途的方法，可用于制造用于各种应用的先进复合材料，以满足科学和技术需求。
