南京工业大学学报（自然科学版）2024，Vol.46Issue(2)：180-187,8.DOI:10.3969/j.issn.1671-7627.2024.02.007
树脂基防隔热一体化热防护复合材料高温性能演变分析
Analysis of the evolution of high temperature performance of resin-based anti-insulation integrated thermal protection composites
李昊 1宋世聪 2张炫烽 2王国庆 2王程豪 2吴伟旭 2朱小飞 2吴战武2
作者信息
- 1. 海军装备部装备审价中心,北京 100071
- 2. 上海航天化工应用研究所,浙江湖州 313002
- 折叠
摘要
Abstract
The resin-based integrated thermal protection composite(PF/CF-HT01)was prepared using sol-gel atmospheric drying method,with heat-resistant phenolic resin(PF)as the matrix and carbon fiber braid(CF)as the composite material.The thermal stability and high-temperature mechanical properties of the material were studied using thermogravimetric analysis(TG)and an electronic universal testing machine.Ablation resistance of the material was evaluated using an oxyacetylene device,while the microstructure evolution of the material was examined through scanning electron microscopy(SEM)and X-ray diffraction(XRD).The results showed that the initial decomposition temperature of the resin matrix was 387.3 ℃,with a maximum decomposition temperature of 644.7 ℃.The residual carbon rate was 13.8％at 800 ℃.For the composite material,the initial decomposition temperature was 405.3 ℃,and the residual carbon rate reached 42.8％at 800 ℃.The compressive strength of the composite material was 542.6 MPa at room temperature.After in-situ heat treatment at 1 000 ℃ for 30 s and 60 s,the maximum compressive strengths were 166.2 MPa and 149.9 MPa,respectively.The composite material exhibited excellent thermal insulation integration performance,with a line ablation rate of 0.039 mm/s.After a single thermal shock assessment,the back temperature remained below 100 ℃,and even after continued thermal conduction,the maximum back temperature did not exceed 200 ℃.The rapid carbonization of the material under high-temperature conditions,leading to the formation of dense SiO2 and BN porcelain layer,conferred outstanding ablation resistance and scouring resistance.Meanwhile,the underlying layer retained its porous structure,maintaining good thermal insulation properties.关键词
树脂基热防护材料/防隔热一体化/高温热考核/多孔材料/固体火箭发动机/隔热材料/酚醛树脂/碳纤维Key words
resin-based thermal protection materials/thermal insulation integration/high-temperature thermal examinations/porous materials/solid rocket motors/thermal insulation materials/phenolic resin/carbon fiber分类
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李昊,宋世聪,张炫烽,王国庆,王程豪,吴伟旭,朱小飞,吴战武..树脂基防隔热一体化热防护复合材料高温性能演变分析[J].南京工业大学学报（自然科学版）,2024,46(2):180-187,8.
