摘要
为了提高酚醛树脂基复合材料的烧蚀隔热性能,本研究采用陕西太航高残碳热固性硼酚醛树脂(THC)系列为基体,芳碳混编布为增强相,通过添加不同比例的锆系功能性填料(陶瓷化助剂)以制备可陶瓷化酚醛树脂基复合材料.通过对改性树脂进行热失重、残碳率、导热系数和线烧蚀率的性能测试分析并辅以扫描电子显微镜(SEM)表征.研究结果表明,加入填料,在500℃以下对材料的残碳率影响不大,500℃以上能显著提高复合材料的烧蚀隔热性能,且随着填料占比的增加,影响越明显.由于填料添加量>9%后会存在溶解困难,因此适用于工业生产制造的优选添加量为7%.
To improve ablation and heat-insulating properties of phenolic based composites, this study used a series of ceramizable phenolic resins based composites with high char yield (THC) from Shaanxi Taihang, and aromatic carbon mixed fabric as the reinforcing phase to prepare a ceramizable phenolic resin based composite, by adding different proportion of zirconium functional filler (ceraming aid). The performance analysis of the modified resin by thermal weight loss, residual carbon ratio, thermal conductivity, line ablation rate and scanning electron microscope (SEM). The results showed that the addition of filler had little effect on the residual carbon ratio of the material below 500 ℃. While the ablation performance and heat-insulating properties of the material could be significantly improved above 500 ℃, and the effect turned more evident with the increase of the proportion of filler. In consideration of processability, the resin with 7% content of the modifier was preferred, as the poor solubility of the resins with more than 9% filler.
作者
谢永旺
李峥
夏雨
郝春功
郝自清
XIE Yongwang;LI Zheng;XIA Yu;HAO Chungong;HAO Ziqing(Aerospace Research Institute of Materials & Processing Technology,Beijing 100074)
出处
《首都师范大学学报（自然科学版）》
2019年第5期52-56,共5页
Journal of Capital Normal University：Natural Science Edition
关键词
酚醛树脂
可陶瓷化
烧蚀
隔热
芳碳混编布
复合材料
phenolic resin
ceramization
ablation
heat-insulating
aromatic carbon mixed fabric
composite
