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剑麻纤维表面特性及其浸润行为

, PP. 69-74

Keywords: 剑麻,浸润,接触角,表面能,Wilhelmy吊片法

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Abstract:

采用Weibull统计分布方法量化了剑麻纤维的横截面积,并考虑液体在剑麻纤维中空结构中的芯吸质量,发展了基于Wilhelmy吊片法原理测试剑麻纤维与液体动态接触角的表征方法。在此基础上,分析了不同表面处理方法对剑麻纤维微观结构、表面化学组成、表面能及其色散、极性特性的影响规律,并测试了剑麻纤维与E51环氧树脂的浸润性。结果表明:NaOH、阻燃剂处理使剑麻纤维表面极性官能团增加,纤维的表面能极性分量增加显著;硅烷处理增加了剑麻纤维表面的极性基团含量,但使其极性分量减小,表面能略有下降;并且剑麻纤维与E51树脂的浸润性与其极性比匹配特性密切相关。

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