| 摘要: |
| 多层隔热组件在真空环境下的理论当量热导率可低至10-5 W/(m?K)，广泛应用于航天器温度控制，在航天器低温燃料蒸发量控制和高超音速飞行器舱内隔热方面都具有普遍应用。近年来，随着材料学的发展，学者们不断推动多层隔热组件应用领域的进一步发展。本文梳理了近20年的多层隔热技术发展状况，对不同种类和结构的多层隔热组件的研究进展进行了综述，包括气凝胶、聚合物垫片等作为间隔材料的设计方案，结合当前技术发展需求，提出了未来多层隔热组件的研究方向和建议。 |
| 关键词: 多层隔热组件 当量热导率 聚合物垫片 间隔材料 |
| 基金项目:国家自然科学基金联合基金项目（U20B2008）；中央高校基本科研业务费专项基金（lzujbky-2023-stlt01）。 |
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| Overview and Research Progress of the Multi-layer Insulation |
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Shao Rongyu1,2, Zhu Dingjun1,2, Wang Xu3, Yang Yushu3, Su Sheng4
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1. College of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000;2. Frontier Science Center for Rare Isotopes, Ministry of Education, Lanzhou 730000;3. Nuclear Power Institute of China, Chengdu 610000;4. Beijing Institute of Spacecraft System Engineering, Beijing 100094
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| Abstract: |
| The theoretical equivalent thermal conductivity of multi-layer thermal insulation material in vacuum environment can be as low as 10-5 W/(m?K), which is widely used in spacecraft temperature control, in spacecraft liquid hydrogen fuel storage tank to prevent fuel evaporation and in hypersonic aircraft heat insulation. In recent years, with the development of materials science, scholars continue to promote the further development of multi-layer insulation materials. In this paper, the development status of multi-layer insulation technology in the past two decades is reviewed, and the research progress of multi-layer insulation materials of different types and structures is reviewed, including the design scheme of aerogel and polymer gasket as spacer materials. Combined with the current technological development needs, the future research direction of high temperature multi-layer insulation materials is proposed. |
| Key words: multi-layer insulation equivalent thermal conductivity polymer gasket spacer material |
