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A gradient anodic oxidation method for treating polyacrylonitrile-based high-modulus carbon fibers

机译:梯度阳极氧化法处理聚丙烯腈基高模量碳纤维

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摘要

We describe a gradient anodic oxidation method. Polyacrylonitrile-based high-modulus carbon fibers were treated by the conventional and gradient anodic oxidation methods. The results show that the carbon fibers treated by the gradient method possessed a more stable tensile strength, larger NaOH uptake, shallower striations, flatter fracture surface of composites, and better interlaminar shear strength compared to those treated by the conventional method. This indicated that the gradient method was more effective in restricting the etching reaction and improving the adhesion between the carbon fibers and matrix, and we give a suggested explanation of the mechanisms.
机译:我们描述了一种梯度阳极氧化方法。聚丙烯腈基高模量碳纤维通过常规和梯度阳极氧化方法进行处理。结果表明,与常规方法相比,梯度法处理的碳纤维具有更稳定的拉伸强度,更大的NaOH吸收量,更浅的条纹,更平坦的断裂表面以及更好的层间剪切强度。这表明梯度法在限制刻蚀反应和改善碳纤维与基体之间的附着力方面更为有效,并给出了机理的建议解释。

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