Direct electrical cure of carbon fiber composites
Direct electrical cure of carbon fiber composites
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DOI：
10.1179/2055035915y.0000000001
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发表时间：
2015-01-01
影响因子：
--
通讯作者：
Duchene, P.
中科院分区：
文献类型：
--
作者：
Hayes, Simon A.;Lafferty, Austin D.;Duchene, P.
本文介绍了通过直接施加电流来固化碳纤维复合材料的研究。碳纤维的导电性使单个纤维能够充当加热元件。结果是在整个复合结构中有大量的加热元件。这些加热元件局部加热它们周围的树脂，导致树脂固化。该研究表明，在高达60 X 25 cm的样品中实现了复合材料的固化。首先，评估获得均匀加热的面板所需的接触布置，并实现最佳布置。然后，测量随着样品厚度和样品长度的变化所需能量的变化。使用差示扫描量热法（DSC）将固化程度与常规固化的复合材料进行比较。三点弯曲测试用于确定复合材料样品的弯曲强度和模量。结果表明，使用直接施加电流可以获得与使用高压釜固化和烘箱固化工艺获得的固化水平相当的固化水平。
This paper presents a study of the cure of carbon fiber composites by the direct application of an electric current. The conductivity of carbon fiber enables the individual fibers to act as heating elements. The result is a large number of heating elements throughout the composite structure. These heating elements locally heat the resin surrounding them, resulting in the resin curing. This study shows that cure of composites is achieved in samples up to 60 X 25 cm. Initially, the required contact arrangement to obtain a uniformly heated panel is assessed and an optimum arrangement achieved. Following this, the change in required energy as the sample thickness and sample length are changed is measured. The degree of cure is compared to conventionally cured composites using differential scanning calorimetry (DSC). Three-point bend testing is used to determine the flexural strength and modulus of the composite samples. The results show that a comparable level of cure can be obtained using direct application of an electrical current as that obtained using autoclave cure and oven cure processes.