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首页> 外文会议>Curtin University Technology, Science and Engineering International Conference >Effect of Diluent on the Rheological and Mechanical Properties of Epoxy-Carbon Nanotubes Composite
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Effect of Diluent on the Rheological and Mechanical Properties of Epoxy-Carbon Nanotubes Composite

机译：稀释剂对环氧 - 碳纳米管复合材料流变和力学性能的影响

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The incorporation of carbon nanotubes (CNTs) with polymer material has been the focus of research for many years, due to relatively simple processing procedure and high potential application. However, it is found to be difficult to get very good CNT dispersion, due to the viscosity built-up during the CNTs dispersions. This project investigated the effect of viscosity of the polymer resin through rheological and mechanical characterization. The key ingredient applied for the modification of the epoxy-CNTs viscosity properties is the ethanol diluent. The effect of ethanol diluent on epoxy-CNTs composites was studied through addition of 5% and 10% weight ratio of ethanol to the epoxy-CNTs suspension with increasing CNTs content up to 0.5% weight proportion. The produced specimens were studied and compared with non-diluent specimens through viscometer, optical microscope and tensile strength testing. The addition of ethanol was found to reduce the viscosity of epoxy-CNTs composite through shear-thinning behaviour, in which results due to a high shear rate condition and was found to be beneficial in reducing the CNTs agglomerations and clusters formation within the composite structure. Moreover, improvement in tensile strength of epoxy-CNTs suspension with diluent was observed over non-diluent epoxy-CNTs specimens. The highest gain in tensile strength among the epoxy-CNTs sample was the one containing 0.5% CNTs and 5% ethanol weight ratio, the highest CNTs content tested in this experiment. The experimental results proved that ethanol diluent is beneficial to epoxy-CNTs composites in reducing agglomeration, improving flow-ability and tensile strength.
机译：碳纳米管（CNT）与聚合物材料的掺入一直是研究的焦点多年，由于相对简单的处理过程和高的潜在的应用。然而，它被发现是很难获得很好的CNT分散，由于在碳纳米管分散建成的粘度。该项目研究通过流变学和机械性质的聚合物树脂的粘度的效果。适用于上述环氧碳纳米管粘度性能的改性的关键成分是乙醇稀释剂。上环氧基的CNT复合材料的乙醇稀释剂的作用是通过加入5％乙醇和10％重量比的环氧碳纳米管悬浮液随碳纳米管含量高达0.5％重量比的影响。研究了制备试样，并通过粘度计，光学显微镜和抗拉强度试验非稀释剂试样进行比较。加入乙醇，发现通过剪切稀化行为，以降低环氧碳纳米管复合材料的粘度，其中结果由于高剪切速率条件和被认为是在减少的复合结构中的碳纳米管聚集体和簇形成是有益的。此外，观察到在非稀释剂环氧碳纳米管标本改善环氧碳纳米管悬浮液的抗张强度与稀释剂。在环氧基的CNT样品中抗张强度最高增益是含有0.5％的CNT和5％乙醇重量比，在该实验中测试的最高含量的CNT的一个。实验结果证明，乙醇稀释剂是在降低结块，提高流动能力和拉伸强度，以环氧CNTs复合有益的。

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