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首页> 外文期刊>Journal of Polymers and the Environment >Effect of Common Chemical Treatments on the Process Kinetics and Mechanical Properties of Flax/Epoxy Composites Manufactured by Resin Infusion
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Effect of Common Chemical Treatments on the Process Kinetics and Mechanical Properties of Flax/Epoxy Composites Manufactured by Resin Infusion

机译：常用化学处理对树脂灌注法制备亚麻/环氧复合材料工艺动力学和力学性能的影响

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摘要

Chemical treatments are widely employed to improve the fiber-matrix adhesion in composites based on eco-friendly fibers such as flax. To better understand the influence of these treatments on processing behavior, this study characterized the surface chemistry and morphology of woven flax fabrics treated by acetone, alkaline, silane and diluted epoxy. Flax/epoxy composites were then manufactured by resin infusion and the flow front and preform thickness evolution was monitored. The alkaline treatment was shown to result in a 50 % increase in equivalent permeability due to an increase in porosity which led to a decrease in flexural properties. The processing results were found to be in good agreement with predictions of a 1-dimensional model. This study suggests that infusion times are not considerably affected by the observed changes in surface energy. However, other implications of the treatments such as an increase in fibrillation can alter the infusion times significantly.
机译：化学处理被广泛用于改善基于亚麻等环保纤维的复合材料中纤维基质的粘合性。为了更好地了解这些处理对加工性能的影响，本研究对用丙酮，碱，硅烷和稀释的环氧处理过的亚麻织物的表面化学和形态进行了表征。然后通过树脂灌注来制造亚麻/环氧树脂复合材料，并监测流动前沿和预成型坯厚度的变化。结果表明，由于孔隙率的增加，碱性处理导致等效渗透率增加了50％，导致挠曲性能下降。发现处理结果与一维模型的预测非常吻合。这项研究表明，所观察到的表面能变化不会显着影响输注时间。但是，治疗的其他影响（例如颤动的增加）会显着改变输注时间。

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