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首页> 外文期刊>Journal of Reinforced Plastics and Composites >Mechanical properties of CNT-Bisphenol E cyanate ester-based CFRP nanocomposite developed through VARTM process
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Mechanical properties of CNT-Bisphenol E cyanate ester-based CFRP nanocomposite developed through VARTM process

机译：通过VARTM工艺开发的CNT-双酚E氰酸酯基CFRP纳米复合材料的机械性能

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摘要

This paper reports on the effect of multiwall carbon nanotubes (CNTs) without and with chemical functionalization on the mechanical properties of Bisphenol E cyanate ester resin (BECy) based carbon fibre reinforced plastic (CFRP) laminated composites. BECy with its low viscosity, low moisture uptake and superior mechanical properties is selected for its application in CFRP laminates through the cost-effective Vacuum Assisted Resin Transfer Moulding (VARTM) process. However, unlike CNT-epoxy-CFRP composites, processing and performance issues such as dispersion of CNTs, chemical bonding with resin, functionalization effects, effects on mechanical properties, etc. for BECy-CNT-CFRP composite system are not well reported. The objective of this study is to improve the mechanical properties of BECy resin with small additions of CNTs and functionalized CNTs in CFRP laminates. CNTs and fCNTs are infused into BECy using ultrasonication and standard mixing methods. Improvements in Young's modulus and strength in tension, compression, shear, flexure and interlaminar shear strength are analysed. It is observed that addition of 0.5wt% CNTs effected for maximum mechanical properties of the resin and 1wt% CNTs for the mechanical properties of CNT-CFRP nanocomposite. Further, improvements obtained with fCNTs are marginal. Dispersion behaviour and effect of CNTs/fCNTs in load transfer corroborated with SEM pictures are presented. The enhanced mechanical properties realized in VARTM processing of BECy-CFRP laminate indicate clear advantage of CNT based modification of the process.
机译：本文报道了没有和有化学功能化的多壁碳纳米管（CNTs）对双酚E氰酸酯树脂（BECy）基碳纤维增强塑料（CFRP）层压复合材料的力学性能的影响。通过经济高效的真空辅助树脂传递模塑（VARTM）工艺，BECy具有低粘度，低吸湿性和优异的机械性能，被选为其在CFRP层压板中的应用。但是，与CNT-环氧-CFRP复合材料不同，对于BECy-CNT-CFRP复合材料系统，其加工和性能问题（如CNT的分散，与树脂的化学键合，功能化效应，对机械性能的影响等）尚未得到充分报道。这项研究的目的是通过在CFRP层压板中少量添加CNT和功能化CNT来改善BECy树脂的机械性能。使用超声和标准混合方法将CNT和fCNT注入BECy。分析了杨氏模量和在拉伸，压缩，剪切，挠曲和层间剪切强度方面的强度的提高。观察到添加0.5wt％的CNT实现了树脂的最大机械性能，并且添加了1wt％的CNT实现了CNT-CFRP纳米复合材料的机械性能。此外，用fCNT获得的改进是微不足道的。给出了碳纳米管/碳纳米管在负载转移中的分散行为和影响，并用SEM照片证实了这一点。在BECy-CFRP层压板的VARTM处理中实现的增强的机械性能表明了基于CNT的工艺改进的明显优势。

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