针对高性能碳纤维展纱过程中在线宽展线性化控制不便、齿形辊展宽参数影响分析不足等问题,以齿形辊为探究对象,系统探讨了张力、包角与齿形辊线速度三项关键工艺参数对TZ800S纤维展宽特性的影响。通过正交试验与最小二乘法线性拟合对比分析,揭示了齿形辊线速度在展宽机理中的主导作用,明确了在本试验条件下,最优展宽参数组合为张力17N、包角120°、齿形辊反向线速度0.6m/min。结果表明:齿形辊线速度较纤维线速度略低时,线性化模型的拟合值与实测展宽度高度吻合,决定系数(R2)达0.98,可用于齿形辊展宽的动态实时线性化控制。进一步结合超景深显微观测结果,纤维展宽后平直度良好,表明该齿形辊展宽系统在实现高精度、低损伤在线展宽控制方面具有显著的工程应用潜力。
To address the challenges associated with the inconvenient online linearization control of high-performance carbon fiber stretching,as well as the insufficient analysis of the influence of toothed roller stretching parameters,this study focused on the toothed roller as the primary research subject.A systematic investigation was conducted to evaluate the effects of three key process parameters—tension,wrap angle,and linear speed of the toothed roller—on the stretching behavior of TZ800S carbon fibers.Through orthogonal experimental design and least squares-based linear regression analysis,the dominant role of the toothed roller's linear speed in the fiber spreading mechanism was identified.The optimal parameter combination for maximum spreading width under the experimental conditions was determined to be a tension of 17N,a wrap angle of 120°,and a reverse linear speed of the toothed roller of 0.6m/min.The results showed that when the linear speed of the toothed roller was slightly lower than that of the fiber,the fitted value of the linearized model was highly consistent with the measured spread width,and the coefficient of determination R2 was 0.98,making it suitable for dynamic real-time control of spreading width in practical applications.Further analysis with ultra-depth-of-field microscopic observations confirmed improved fiber straightness after spreading,demonstrating the significant engineering potential of this toothed roller system for achieving high-precision,low-damage online linearization control.
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