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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Oxidation and ablation behaviors of carbon fiber/phenolic resin composites modified with borosilicate glass and polycarbosilane interface
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Oxidation and ablation behaviors of carbon fiber/phenolic resin composites modified with borosilicate glass and polycarbosilane interface

机译：用硼硅酸盐玻璃和聚氨基硅烷界面改性碳纤维/酚醛树脂复合材料的氧化和消融行为

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摘要

In this work, modified carbon fiber-reinforced phenolic resin composites (CPR) were prepared. To improve the high temperature performance of CPR, borosilicate glass with different concentrations was incorporated and polycarbosilane (PCS) was added as an interface layer. The oxidation and ablation behaviors of the modified CPR composites were studied. It was found that the borosilicate glass filler changed the oxidation mechanism of composites at temperatures higher than 1000 degrees C, and caused the volatilization of borosilicate glass in addition to the oxidation of carbon. The strength of composites after oxidation was significantly improved via this modification. The thermal conductivities of composites decreased with the increase in content of fillers, leading to low back temperature during the ablation process and high heat-shielding performance. The ablation properties were improved via the formation of SiC with high melting point. The above results indicate that these modified composites are promising materials for application in thermal protection systems. (C) 2020 Elsevier B.V. All rights reserved.
机译：在这项工作中，制备改性碳纤维增强酚醛树脂复合材料（CPR）。为了改善CPR的高温性能，掺入具有不同浓度的硼硅酸盐玻璃，并加入聚碳硅烷（PC）作为界面层。研究了修饰的CPR复合材料的氧化和消融行为。发现硼硅酸盐玻璃填料在高于1000℃的温度下改变复合材料的氧化机理，并且除了碳的氧化之外，硼硅酸盐玻璃挥发。通过该修饰显着改善了氧化后复合材料的强度。复合材料的热导体随着填料含量的增加而降低，导致在消融过程中的低温温度和高蓄热性能。通过具有高熔点的SiC的形成改善了消融性质。上述结果表明，这些改进的复合材料是在热保护系统中应用的有希望的材料。 （c）2020 Elsevier B.v.保留所有权利。

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