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5 cm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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