一种用于提高环氧复合材料韧性和热性能的碳纳米球纳米流体。

A carbon nanosphere nanofluid for improving the toughness and thermal properties of epoxy composites.

作者信息

Li Peipei, Qu Danyao, Zhang Lu, Su Chen, Ma Jie, Wang Qi, Liu Chao, Wang Yongkun, Feng Huanran, Li Cong, Wu Weiwei

机构信息

School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Shaanxi, 710071, People's Republic of China.

Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, People's Republic of China.

出版信息

Nanotechnology. 2022 Jun 24;33(37). doi: 10.1088/1361-6528/ac764f.

DOI:10.1088/1361-6528/ac764f

PMID:35671676

Abstract

A carbon nanosphere nanofluid (CNS-nanofluid) was successfully prepared through the non-covalent modification of carbon nanosphere (CNS) with the specific ionic liquid (i.e. [M2070][VBS]) at first. The resulting CNS-nanofluid is a homogeneous and stable fluid with liquid-like behaviour at room temperature, and which shows better dispersion stability in its good solvents and improved processability than the pristine CNS. Subsequently, this CNS-nanofluid was used as a kind of novel functional filler and incorporated into epoxy matrix to prepare the CNS-nanofluid filled epoxy composites (CNS-nanofluid/EP composites). The toughness and thermal properties of those CNS-nanofluid/EP composites were carefully characterized and analysed. And it was found that this CNS-nanofluid could respectively improve the impact toughness and glass transition temperature of the CNS-nanofluid/EP composites to 19.8 kJ mand 122.5 °C at the optimum amount, demonstrating that this CNS-nanofluid is a kind of promising functional filler to achieve robust epoxy composites, and thus opening up new possibilities with great significance for epoxy composites in high-performance applications.

摘要

首先，通过特定离子液体（即[M2070][VBS]）对碳纳米球（CNS）进行非共价修饰，成功制备了碳纳米球纳米流体（CNS-纳米流体）。所得的CNS-纳米流体是一种均匀稳定的流体，在室温下具有类似液体的行为，并且与原始CNS相比，在其良溶剂中表现出更好的分散稳定性和更高的可加工性。随后，将这种CNS-纳米流体用作一种新型功能填料，并将其掺入环氧基质中，以制备CNS-纳米流体填充的环氧复合材料（CNS-纳米流体/EP复合材料）。对这些CNS-纳米流体/EP复合材料的韧性和热性能进行了仔细的表征和分析。结果发现，在最佳用量下，这种CNS-纳米流体可以分别将CNS-纳米流体/EP复合材料的冲击韧性和玻璃化转变温度提高到19.8 kJ/m²和122.5℃，这表明这种CNS-纳米流体是一种有前途的功能填料，可用于制备坚固的环氧复合材料，从而为高性能应用中的环氧复合材料开辟了具有重要意义的新可能性。