添加ETBN增韧剂和Af-MWCNTs增强c -环氧复合材料的拉伸、弯曲和ILSS性能

Yenni Appa Rao, K. Ramji, P. Rao
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引用次数: 0

摘要

本研究的目的是开发一种具有拉伸、弯曲和层间剪切强度(ILSS)等独特特性组合的混合复合材料。对于水下、航空航天、国防和汽车应用中使用的部件来说,这是目前的需求,因为部件要承受各种加载条件,包括拉伸、弯曲和剪切。采用环氧端丁二烯丙烯腈(ETBN)液体橡胶和氨基功能化多壁碳纳米管(Af-MWCNTs)改性碳纤维增强环氧(c -环氧)复合材料。加入ETBN后,材料的拉伸性能、弯曲性能和ILSS性能分别提高38%、46%和80%。添加0.5wt%的Af-MWCNTs可使材料的拉伸强度和弯曲强度分别提高59%和61%。相比之下,在1.0 wt时,ILSS的最大改善为120%。%的Af-MWCNTs。c -环氧- etbn - af - mwcnts的独特组合导致纤维基体界面形成锯齿状表面,从而提高了能量吸收。讨论了性能改善的增韧机理,并通过有限元分析对结果进行了验证。
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Enhancement of tensile, flexural and ILSS properties of C-epoxy composites with the addition of ETBN toughener and Af-MWCNTs
The objective of this research is to develop a hybrid composite with a unique combination of features such as tensile, flexural and Interlaminar shear strength (ILSS) properties. It is a present need for components used in underwater, aerospace, defence and automotive applications, as parts are subjected to a variety of loading conditions, including tensile, bending and shearing. Carbon fibre reinforced epoxy (C-epoxy) composite is modified by adding epoxy terminated butadiene acrylonitrile (ETBN) liquid rubber and amino-functionalized multi-walled carbon nanotubes (Af-MWCNTs). With the addition of ETBN, the tensile, flexural and ILSS properties were improved by 38%, 46% and 80%, respectively. The addition of 0.5wt% of Af-MWCNTs improved the tensile and flexural strengths by a maximum of 59% and 61%, respectively. In contrast, the maximum improvement in ILSS of 120% was obtained at 1.0 wt.% of Af-MWCNTs. The unique combination of C-epoxy-ETBN-Af-MWCNTs led to the formation of the serrated surface at the fibre matrix interface, which caused improved energy absorption. The toughening mechanisms which are responsible for the improvement in properties are discussed and the results are validated through finite element analysis (FEA).
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来源期刊
CiteScore
6.00
自引率
1.70%
发文量
24
期刊介绍: Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems is a peer-reviewed scientific journal published since 2004 by SAGE Publications on behalf of the Institution of Mechanical Engineers. The journal focuses on research in the field of nanoengineering, nanoscience and nanotechnology and aims to publish high quality academic papers in this field. In addition, the journal is indexed in several reputable academic databases and abstracting services, including Scopus, Compendex, and CSA's Advanced Polymers Abstracts, Composites Industry Abstracts, and Earthquake Engineering Abstracts.
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