EFFECT OF AMOUNT OF GRAFTED CNT ON CARBON FIBER ON INTERFACIAL SHEAR STRENGTH BETWEEN CARBON FIBER AND POLYAMIDE RESIN BY MICRODROPLET TEST
EFFECT OF AMOUNT OF GRAFTED CNT ON CARBON FIBER ON INTERFACIAL SHEAR STRENGTH BETWEEN CARBON FIBER AND POLYAMIDE RESIN BY MICRODROPLET TEST
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DOI：
10.2495/hpsm200061
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发表时间：
2020-11
期刊：
影响因子：
5
通讯作者：
Kazuto Tanaka;Toshiki Takenaka;T. Katayama;Y. Morita;Kimitaka Watanabe;M. Kawaguchi
中科院分区：
文献类型：
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作者：
Kazuto Tanaka;Toshiki Takenaka;T. Katayama;Y. Morita;Kimitaka Watanabe;M. Kawaguchi
碳纤维增强热塑性塑料（CFRTP）预计将更多地用于汽车行业，因为它们可以通过改善发动机/混合动力汽车的燃料消耗来减少二氧化碳排放，并延长电动汽车的行驶里程。对于纤维增强复合材料，控制纤维/基体界面剪切强度（IFSS）是非常重要的。最近，碳纳米管（CNT）由于其出色的机械、电和热性能而被应用于CFRP作为增强材料-特别是已经开发了用于将CNT接枝在碳纤维表面上的技术，并且CNT接枝的碳纤维显示出比碳纤维更高的纤维/基体IFSS。为了优化纤维/基体IFSS，必须澄清碳纤维上接枝的CNT的量对纤维/基体IFSS的影响。在这项研究中，纤维/基体IFSS之间的聚酰胺6（PA 6）和CNT接枝碳纤维与不同量的接枝CNT，这是使用Ni电镀技术制备的澄清通过微滴测试。在30 s和60 s的镀镍时间条件下，纤维/基体的IFSS低于镀镍时间为5 s的条件，这是由于碳纳米管的聚集导致树脂没有插入纤维/基体界面，这与碳纤维的表面粗糙度有关。在镀镍时间为5 s的条件下，获得了最佳的纤维/基体IFSS。
Carbon Fiber Reinforced Thermoplastics (CFRTP) are expected to be used more in the automobile industry because they could reduce carbon dioxide emissions by improving fuel consumption for engine/hybrid vehicles and extend the driving mileage for electric vehicles. For fiber reinforced composite materials, it is important to control the fiber/matrix interfacial shear strength (IFSS). Recently, carbon nanotubes (CNT) are being applied to CFRP as a reinforcement material because of their outstanding mechanical, electric and thermal properties – especially as a technique for grafting CNTs on the surface of carbon fibers has been developed and CNT grafted carbon fibers show higher fiber/matrix IFSS than carbon fibers. To optimize the fiber/matrix IFSS, the effect of the amount of grafted CNT on carbon fiber on the fiber/matrix IFSS has to be clarified. In this study, the fiber/matrix IFSSs between Polyamide 6 (PA6) and CNT grafted carbon fiber with different amounts of grafted CNT which were prepared using the Ni plating technique were clarified by a microdroplet test. Under the conditions of the Ni plating time of 30 s and 60 s, the fiber/matrix IFSS was lower than the conditions of the Ni plating time of 5 s because the resin was not inserted into the fiber/matrix interface due to the aggregation of CNTs, which was related to surface roughness of carbon fiber. Under the conditions of the Ni plating time of 5 s, the best fiber/matrix IFSS was obtained.