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Rapid electrothermal-triggered flooded thermoset curing for scalable carbon/polymer composite manufacturing
Composites Science and Technology ( IF 9.1 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.compscitech.2020.108409
Baohui Shi , Yuanyuan Shang , Ping Zhang , Shengkai Liu , Shuwei Huang , Baozhong Sun , Bohong Gu , Kun (Kelvin) Fu

Abstract Carbon-based (e.g. carbon fibers or carbon nanotube (CNT)) polymer composite materials, due to the high specific strength, and good chemical stability features, is a promising structural material for energy-efficient applications in aerospace and civil infrastructures. However, the difficulty of viscosity-related infusing and curing of polymer limits composite mechanical performance and manufacturing efficiency. Here we overcome these difficulties and report an electrothermal-triggered flooded thermoset curing to enable rapid and energy-efficient manufacturing of carbon/polymer composite. The underlying concept is based on the two-step localized in-situ infusion and curing in flooded polymer by Joule heating of carbon-based materials to facilitate the flow of polymer into the microstructure in low current, followed by curing of polymer resin in high current. The viscosity adjustment and defoaming process in the infusing process and the curing properties (degree of cure and strength) of the composites were used to prove the effectiveness of this curing strategy in composite fabrication. This electrothermal-triggered curing approach provides a rapid, energy-efficient, scalable, and volumetric composite manufacturing technique.

中文翻译:

用于可扩展碳/聚合物复合材料制造的快速电热触发溢流热固性固化

摘要 碳基(如碳纤维或碳纳米管(CNT))聚合物复合材料由于具有较高的比强度和良好的化学稳定性等特点,是一种很有前景的结构材料,可用于航空航天和民用基础设施的节能应用。然而,与粘度相关的聚合物灌注和固化的困难限制了复合材料的机械性能和制造效率。在这里,我们克服了这些困难,并报告了一种电热触发的充满热固性固化,以实现碳/聚合物复合材料的快速和节能制造。基本概念基于两步局部原位灌注和固化,通过焦耳加热碳基材料,以促进聚合物在低电流下流入微观结构,然后在高电流下固化聚合物树脂。灌注过程中的粘度调整和消泡过程以及复合材料的固化性能(固化程度和强度)被用来证明这种固化策略在复合材料制造中的有效性。这种电热触发固化方法提供了一种快速、节能、可扩展的体积复合材料制造技术。
更新日期:2020-11-01
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