The work presents the results of research on composite materials made of silicon-containing polymer-derived ceramic matrix composites (PDC-Cs) and nanocomposites (PDC-NCs). Carbon micro and nanofibers (CFs and CNFs) were used as reinforcements. The interactions between carbon micro and nanofibers and polysiloxane matrix, as well as interphase evolution mechanism in composite samples during their heating to 1000 °C were studied. CF/resin and CNF/resin composites were prepared via liquid precursor infiltration process of unidirectionally aligned fibers. After heating to 700 °C–800 °C, decomposition of the resin in the presence of CNFs led to the formation of fiber/organic-inorganic composites with pseudo-plastic properties and improved oxidation resistance compared to as-prepared fiber/resin composites. The most favourable mechanical properties and oxidation resistance were obtained for composites and nanocomposites containing the maximum amount of carbon nanoparticles precipitated in the SiOC matrix during the heat treatment at 800 °C. The precipitated carbon phase improves fiber/matrix adhesion of composites.

这项工作介绍了由含硅聚合物衍生的陶瓷基复合材料（PDC-Cs）和纳米复合材料（PDC-NCs）制成的复合材料的研究结果。碳微纤维和纳米纤维（CF和CNF）用作增强材料。研究了碳微纤维和纳米纤维与聚硅氧烷基质之间的相互作用，以及复合材料样品在加热至1000°C时的相演化机理。CF /树脂和CNF /树脂复合材料是通过单向排列纤维的液体前体渗透过程制备的。加热到700°C–800°C后，在存在CNF的情况下树脂分解导致形成的纤维/有机-无机复合材料具有拟塑性特性，并且与制备的纤维/树脂复合材料相比，具有更高的抗氧化性。对于在800°C的热处理过程中，SiOC基质中析出的碳纳米颗粒数量最多的复合材料和纳米复合材料，其机械性能和抗氧化性能最理想。沉淀的碳相改善了复合材料的纤维/基体粘合力。