ZrB_2颗粒改性碳/酚醛复合材料烧蚀隔热性能研究

Ablation Performance and Insulation Property of Carbon/Pheonlic Composites with ZrB_2 Particles

采用浆料浸渗法将ZrB2颗粒引入碳/酚醛复合材料,利用氧-乙炔烧蚀试验测试不同ZrB2含量的碳/酚醛复合材料的烧蚀及隔热性能。实验表明,碳/酚醛树脂基复合材料的线烧蚀率随ZrB2含量的增加而减小,在9%时达到最小值0.0052 mm/s。若继续增加ZrB2的含量,其线烧蚀率反而增加。ZrB2含量为9%时,碳/酚醛树脂基复合材料的隔热性能最优。将ZrB2引入碳/酚醛树脂基复合材料可以改善其烧蚀隔热性能,为碳/酚醛树脂基复合材料的结构及材料组分优化设计提供了重要参考。

ZrB2 particles were introduced into the carbon/phenolic composites by immersion,and the ablative performance and thermal insulation property of carbon/phenolic composites with different ZrB2 particle percents were acquired by oxygen-acetylene ablation experiments.The results indicate that the linear ablation rate of carbon/phenolic composite with ZrB2 decreases with the increase of ZrB2 content,and it reaches a minimum value of 0.0052 mm/s at 9% of ZrB2 content.By contrast,the linear ablation rate creeps slightly when the percent of ZrB2 content maintains increase.In addition,the carbon/phenolic composite insulation performance is the optimal at 9% of ZrB2 content.Introducing ZrB2 into the carbon/phenolic composites could improve the ablation performance and the insulation property.It may provide an advanced method for optimizing design of carbon/phenolic composite materials and structures.