Dispersion characteristics and mechanical properties of epoxy nanocomposites reinforced with carboxymethyl cellulose functionalized nanodiamond, carbon nanotube, and graphene
Dispersion characteristics and mechanical properties of epoxy nanocomposites reinforced with carboxymethyl cellulose functionalized nanodiamond, carbon nanotube, and graphene
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羧甲基纤维素功能化纳米金刚石、碳纳米管及石墨烯增强环氧树脂纳米复合材料的分散特性与力学性能
DOI：
10.1002/pc.27785
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发表时间：
2023-09
影响因子：
5.2
通讯作者：
Dawei Zhang;Ying Huang;Wenjie Xia;Luyang Xu;Xingyu Wang
中科院分区：
文献类型：
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作者：
Dawei Zhang;Ying Huang;Wenjie Xia;Luyang Xu;Xingyu Wang
碳基纳米颗粒被广泛认为是纳米复合材料中有前途的纳米填料，以追求先进的性能。到目前为止，一直缺乏系统的研究纳米填料的结构变化和它们对分散特性的影响，以及由此产生的纳米复合材料的机械性能。在这项研究中，纳米金刚石（ND），碳纳米管（CNT）和石墨烯（GNP）分别被选为代表性的零维，一维和二维纳米填料。一种新的功能化技术，利用羧甲基纤维素（CMC）分散纳米填料。各种表征技术和实验结果表明，CMC功能化是有效的，在减少团聚和改善所有三种纳米填料的分布均匀性。在三种纳米填料中，零维ND在环氧树脂纳米复合材料中表现出最均匀的分散质量。ND增强环氧树脂纳米复合材料的耐磨性最强，而CNT增强环氧树脂纳米复合材料的拉伸性能最好。球形结构的纳米金刚石具有较好的分散特性。圆柱形碳纳米管和平面石墨烯倾向于团聚。纳米金刚石增强纳米复合材料具有较好的耐磨性。碳纳米管增强纳米复合材料具有较好的拉伸性能。羧甲基纤维素官能化对所有三种纳米填料都有效。
Carbon‐based nanoparticles are widely regarded as promising nanofillers in nanocomposites to pursue advanced properties. To date, there has been a lack of systematic investigation into the structural variations of nanofillers and their influences on dispersion characteristics, as well as the resulting mechanical properties of nanocomposites. In this study, nanodiamond (ND), carbon nanotube (CNT), and graphene (GNP) were selected as the representative zero‐, one‐, and two‐dimensional nanofillers, respectively. A novel functionalization technique utilizing carboxymethyl cellulose (CMC) was employed to disperse nanofillers. The various characterization techniques and experimental results revealed that CMC functionalization was effective in reducing the agglomeration and improving the distribution uniformity of all three nanofillers. Among the three nanofillers, zero‐dimensional ND exhibited the most homogeneous dispersion quality in epoxy nanocomposites. The strongest abrasion resistance was found in ND‐reinforced epoxy nanocomposites, while CNT‐reinforced epoxy nanocomposites exhibited the best tensile properties. Nanodiamond with a spherical structure had better dispersion characteristics. Cylindrical carbon nanotube and planar graphene tended to agglomerate. Nanodiamond reinforced nanocomposites had better abrasion resistance. Carbon nanotube reinforced nanocomposites had better tensile properties. Carboxymethyl cellulose functionalization was valid for all three nanofillers.