以预氧化纤维不织布经不同热处理后,采用液态含浸法浸酚醛树脂后经热压成型,制成炭/炭复合材料前驱体,随之将这些前驱体经230 ℃稳定化,600 ℃及1 000 ℃炭化处理.讨论了不同纤维不织布的结构变异,以及各种炭/炭复合材料其微细结构及物性之变化.在物性分析方面,主要是以挠曲强度的测试为骨架,并以扫瞄式电子显微镜(SEM)观察破断表面,探讨各种复合材料经不同温度处理后之破坏行为,研究结果显示,以预氧化纤维及经600 ℃处理后之纤维所制复合材料经三个不同温度(230 ℃,600 ℃,1 000 ℃)处理后,其破坏行为均呈现剧烈的脆性破坏,且具有平滑之破断表面;而以经1 000 ℃处理后之纤维所制复合材料经600 ℃及1 000 ℃炭化后则呈现拟塑性破坏模式,并伴随显著的纤维拖出现象.
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