【作者】 吴琪琳； 吴敏； 潘鼎；

【Author】 WU Qi-lin~(1,2) WU Min~3 PAN Ning~2 PAN Ding~1 (1.State Key Lab.for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 200051,China; 2.Department of Textile and Clothing,University of California at Davis,CA 95616,USA; 3.Network Center,Donghua University,Shanghai 200051,China)

【机构】 东华大学纤维材料改性国家重点实验室； 东华大学网管中心；

【摘要】 运用两参数 Weibull 分布模型分析了不同氧化和碳化牵伸条件下粘胶基碳纤堆的拉伸强度分布,测定了不同条件下强度,并利用自编的计算机程序对所得数据进行分析,计算获得了 Weibull 平均强度（σ）,Weibull 形状参数（m）和尺度参数（σ₀）．同时,模拟了粘胶基碳纤维的断裂存活概率密度函数．结果发现氧化和碳化牵伸都对强度、模量和 Weibull 分布参数等有显著影响．讨论了产生这些影响的可能原因．更多还原

【Abstract】 We applied a two-parameter Weibull distribution model to analyze the tensile strength distributions of rayon-based carbon fibers(RCF)manufactured under various carbonizing stretch ratios.Based on the experimental strength data and using a self programmed computer algorithm,the Weibull average strength(σ)and Weibull shape parameter(m)were then calculated.In addition, the probability density functions of the RCF strength were simulated successfully.Carbonizing stretch ratios are found to significantly influence the tensile strengths of the resulting RCF,the Young’s modulus and the Weibull distribution parameters as well.The trend and possible explanations for such influence are also discussed.更多还原