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首页> 外文期刊>Polymer Composites >Rapid Evaluation of Thermal Aging of a Carbon Fiber Laminated Epoxy Composite
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Rapid Evaluation of Thermal Aging of a Carbon Fiber Laminated Epoxy Composite

机译：碳纤维层压环氧树脂复合材料热老化的快速评估

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This study concentrated on the thermal aging mechanism and lifetime of a carbon fiber laminated epoxy composite. Samples of the laminated composite and the neat resin (as a contrast) were exposed in air circulating ovens set at 90, 120, and 150°C for various periods of time up to 13 days. The flexural properties combining with FTIR, weight loss, DSC, SEM, and surface morphology analyses were performed on the unaged and aged samples. The flexural strength of the composite deteriorated by a factor of 3 as a result of weight loss, microcrack formation, and chain scissions. The two-way ANOVA results indicated that the aging time had significant effect on the flexural strength of the composite and the aging temperature had no significant effect on it. Two statistical models were established to predict the residual flexural strength and lifetime of this composite.
机译：这项研究集中于碳纤维层压环氧复合材料的热老化机理和寿命。将层压复合材料和纯树脂的样品（作为对比）在设定为90、120和150°C的空气循环烘箱中暴露长达13天的不同时间。在未老化和老化的样品上进行了结合FTIR，重量损失，DSC，SEM和表面形态分析的弯曲性能。由于重量减少，微裂纹形成和链断裂，复合材料的弯曲强度降低了3倍。双向方差分析结果表明，时效时间对复合材料的弯曲强度有显着影响，时效温度对复合材料的抗弯强度没有显着影响。建立了两个统计模型来预测这种复合材料的残余抗弯强度和寿命。

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