| 引用本文: | 陈思安,李海玉,迟蓬涛,等.耐1200 ℃陶瓷瓦重复使用性能.[J].国防科技大学学报,2021,43(4):69-75.[点击复制] |
| CHEN Sian,LI Haiyu,CHI Pengtao,et al.High-temperature reusability of ceramics tile resistant to 1200 ℃[J].Journal of National University of Defense Technology,2021,43(4):69-75[点击复制] |
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| 耐1200 ℃陶瓷瓦重复使用性能 |
| 陈思安1,李海玉1,迟蓬涛2,高扬2,李俊宁3,解维华4 |
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(1. 国防科技大学 空天科学学院, 湖南 长沙 410073;2. 中国运载火箭技术研究院 空间物理重点实验室, 北京 100076;3. 航天材料与工艺研究所 先进功能复合材料技术重点实验室, 北京 100076;4. 哈尔滨工业大学 航天学院, 黑龙江 哈尔滨 150006)
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| 摘要: |
| 针对目前比较成熟的耐1 200 ℃陶瓷瓦开展了1 200 ℃多次重复热处理,研究了陶瓷瓦的结构和性能演变行为和重复使用性能。结果表明:1 200 ℃热处理20次后,耐1 200 ℃陶瓷瓦表现出良好的宏观热稳定性；重复热处理过程中,纤维间烧结,黏接熔融和石英纤维析晶及晶粒长大,使纤维直径发生变化,出现缩颈,进而导致了Z向收缩,收缩率达14%,从而使得压缩强度略有增大,隔热性能降低；经过1 260 ℃、11次单面辐射加热后,Z向收缩率为5.58%,隔热效果降低了7.59%,但隔热材料能够在6次重复加热后保持材料隔热性能不降低。 |
| 关键词: 陶瓷瓦 隔热材料 重复使用 力学性能 隔热性能 |
| DOI：10.11887/j.cn.202104009 |
| 投稿日期：2019-12-11 |
| 基金项目:国家重点基础研究发展计划资助项目(2015CB655200)；特种环境复合材料技术国防科技重点实验室基金资助项目(JCKYS2020603C016) |
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| High-temperature reusability of ceramics tile resistant to 1200 ℃ |
| CHEN Sian1, LI Haiyu1, CHI Pengtao2, GAO Yang2, LI Junning3, XIE Weihua4 |
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(1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2. Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing 100076, China;3. National Key Laboratory of Science and Technology on Advanced Functional Composites Technology, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China;4. School of Astronautics, Harbin Institute of Technology, Harbin 150006, China)
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| Abstract: |
| The structure and performance evolution of 1 200 ℃ ceramic tile repeated at 1 200 ℃ were studied. Results show that after heat treatment at 1 200 ℃ for 20 times, the ceramic tile with 1 200 ℃ exhibits good macroscopic thermal stability. During the repeated heat treatment, sintering occurs between the fibers, and the bonds are melted. Quartz fiber crystallization and grain growth result in fiber diameter changes, such as neckdown, and 14% shrinkage rate of Z direction, which in turn makes the compressive strength slightly increase, and the thermal insulation performance decrease. After 1 260 ℃ and 11 times of single-sided radiant heating, the Z-direction shrinkage rate was 5.58%, and the thermal insulation effect is reduced by 7.59%. However, the thermal insulation material can maintain the thermal insulation performance of the material after 6 repeated heating. |
| Keywords: ceramics tile insulation materials reuse mechanical properties thermal insulation performance |
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