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用Weibull方法评价化学介质对PBO纤维统计强度的影响

, PP. 16-20

Keywords: PBO,纤维,Weibull,统计强度

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Abstract:

以Weibull统计模型和最弱连接理论为基础,研究了经6种化学介质处理的5cm长PBO单纤维的统计强度及强度分布,并与未经处理的PBO纤维比较。用SEM对纤维表面进行了观察,分析了其强度变化的原因。结果表明,酸性介质对PBO纤维强度及强度分散性影响较大,且盐酸和硫酸对纤维的破坏有不同的机理。

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