作　　者： (刘超）; (汪泽幸）; (李洪登）; (彭新元）; (李文辉）;

机构地区： 湖南工程学院纺织服装学院,湘潭411104

出　　处： 《湖南工程学院学报（自然科学版）》 2017年第3期61-66,共6页

摘　　要： 为进一步研究聚酰亚胺纤维的力学性能,以轶纶~短纤维为研究对象,对其拉伸性能及细度指标进行了实验测试,并对各指标的分布进行了统计学分析.试验结果表明,纤维的拉伸性能及细度指标均呈现偏态分布特征,纤维的强力与伸长率均可用三参数Weibull分布来描述,而纤维的线密度与细度均可用三参数Log-logistic分布来描述.同时发现,纤维的强力与伸长率之间存在弱相关性(R^2=0.49).可靠性分析表明,在同等累计分布概率(0.5)下,强力和伸长率的理论计算值高于算数均值,而纤维线密度和直径的计算值低于算数均值. To further study on the physics behavior of Polyimide （PI） fiber, the experiment on tensile be- havior and fineness of Yilun staple fiber are conducted in this study, and the performance indexes are ana- lyzed statistically. The results show that the tensile performance and fineness are characterized by skew distribution. The probability distribution of tensile strength and elongation can be described by three pa- rameters Weibull distribution. Meanwhile, probability distribution of the linear density and diameter can be expressed by three parameters Log-logistic distribution. Meanwhile, it can be found that the relationship between tensile strength and elongation is not significant. On the condition that the cumulative distribution probability is 0.5, the theoretical values of strength and elongation are greater than arithmetic mean, and less than arithmetic mean for linear density and diameter.

关 键 词： 聚酰亚胺 短纤维 强力 伸长率 线密度 纤维直径 偏态分布