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Promising commercial reinforcement to the nanodiamond/epoxy composite by grafting ammonium ions

Promising commercial reinforcement to the nanodiamond/epoxy composite by grafting ammonium ions
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摘要 A simple, economic, efficient and eco-friendly nanodiamond (ND) modifying method to reinforce the ND]epoxy composite for the industrialization of the high-performance ND/epoxy composite is always desired. In the present work, the ND was successfully modified only using aqueous ammonia through an easy-to-operate method by replacing the hydrogen atoms in the carboxyl group with ammonium ions. Ammonia, which is the only pollutant in the process, could be recycled. The modified ND/epoxy composite showed an overwhelming advantage over the neat epoxy or the ND/epoxy composite in storage modulus in their glassy state without any degradation of tensile strength, hardness and fracture toughness. A simple, economic, efficient and eco-friendly nanodiamond (ND) modifying method to reinforce the ND]epoxy composite for the industrialization of the high-performance ND/epoxy composite is always desired. In the present work, the ND was successfully modified only using aqueous ammonia through an easy-to-operate method by replacing the hydrogen atoms in the carboxyl group with ammonium ions. Ammonia, which is the only pollutant in the process, could be recycled. The modified ND/epoxy composite showed an overwhelming advantage over the neat epoxy or the ND/epoxy composite in storage modulus in their glassy state without any degradation of tensile strength, hardness and fracture toughness.
出处 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2018年第6期990-994,共5页 材料科学技术(英文版)
基金 supported by the National Natural Science Foundation of China(Nos.21503241,21473223,51221264,21261160487,91545119 and 91545110) the CAS/SAFEA International Partnership Program for Creative Research Teams
关键词 Polymer-matrix composites Interface Mechanical properties Dynamic mechanical thermal analysis Nanodiamond/epoxy Polymer-matrix composites Interface Mechanical properties Dynamic mechanical thermal analysis Nanodiamond/epoxy
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