A comparative study of the fuzz produced by friction and tension in China T800 and Toray T800H carbon fiber tows
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摘要: 采用海绵摩擦方法研究了东丽T800H和国产T800级炭纤维毛丝，结果表明国产炭纤维毛丝量明显高于东丽炭纤维，随海绵压力、纤维张力增加，两种炭纤维毛丝量变化规律差异显著。扫描电镜照片统计结果显示国产炭纤维的断头率明显多于东丽炭纤维；炭纤维表面微摩擦力表征结果表明国产T800级炭纤维表面局部上浆不均匀造成的上浆剂堆积显著增大了纤维摩擦力；炭纤维丝束中单丝之间绞络程度也是影响毛丝量的重要因素。炭纤维毛丝典型断口形貌对比分析证实，纤维单丝受到径向分力导致其弯折断裂是毛丝的主要生成机制，断头率、摩擦力和单丝绞络程度三因素耦合是引起国产炭纤维毛丝量高于东丽炭纤维的主要原因。Abstract: The fuzzes weights in Toray T800H and China T800 carbon fiber tows were investigated under friction by rubbing the fiber tows between a pair of sponges and tension along the fiber tows by stretching. Results show that the fuzzes weights of China T800 are much higher than in Toray T800H. The effect of a compressive load on the sponges and a tensile force on the fiber tows on the fuzzes weights is noticeably different for the two tows. SEM images show that the fuzzes weights of China T800 are more than that in Toray T800H. AFM indicates that the sizing of China T800 is less uniform than that of Toray T800H. Moreover, interweaving of the filaments in China T800 is more apparent than in Toray T800H. These three factors contribute jointly to the larger fuzzes weights and its more obvious increase under both friction and tension for the China T800 than the Toray T800H tows.
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Key words:
- Carbon fiber /
- Fuzz /
- Evaluation /
- Formation mechanism
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