基于聚酰亚胺泡沫的蒸汽管路绝热结构设计与性能验证
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1.海装驻北京地区第一军事代表室,北京 100076;2.航天材料及工艺研究所,北京 100076;3.海军研究院,北京 100161

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TQ328

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Design and Performance Verification of Thermal Insulation Structure of Steam Pipeline Based on Polyimide Foam
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Affiliation:

1.First Military Representative Office in Beijing Area for Naval Equipment Department, Beijing 100076;2.Aerospace Research Institute of Materials & Processing Technology, Beijing 100076;3.Research Institute for Navy, Beijing 100161

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    摘要:

    针对核潜艇动力装置蒸汽管路对新型绝热材料的需求,设计并制造了一种以聚酰亚胺泡沫为主要功能层的用于潜艇蒸汽管路表面的新型绝热结构。参照潜艇二回路管路应用要求,对绝热结构的绝热功能和使用过程中的结构稳定性进行了验证,阐明了绝热机理。结果表明:新型绝热结构经280 ℃、480 h连续加温考核试验和720 h静置试验,该绝热结构件外表面温度控制在45.2~46.5 ℃,整个考核期间结构和尺寸变形量几乎为0且趋于稳定。在蒸汽管路构件表面施工多层聚酰亚胺泡沫作为绝热结构,解决了现有无机岩棉类体系存在的工艺性差、环保性差等问题,该研究可为舰艇新型绝热结构的应用发展提供工程技术参考。

    Abstract:

    In order to meet the requirements of new thermal insulation materials for the steam pipeline of nuclear submarine, a new kind of thermal insulation structure based on polyimide foam was designed and manufactured for the surface of submarine steam pipeline. The thermal insulation performance and structural stability of the thermal insulation structure during use were studied according to the application requirements of submarine steam pipeline. The thermal insulation mechanism was also investigated. The results indicate that the external surface temperature of the insulation structure is 45.2 to 46.5 ℃ during the continuous heating at 280 ℃ for 480 hours. Furthermore, it is also found that the structural and dimensional deformation is almost 0 during the continuous heating test and the subsequent static test for 720 hours. It is noteworthy that the multi-layer polyimide foams applied as insulation structure of steam pipeline can solve the processing and environmental problems related to the inorganic rock cotton system. The data in this paper will provide technical and practical support for the practical application of polyimide foams on steam pipeline surface.

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王在铎,马晶晶,赵一搏,贾地,刘军刚.基于聚酰亚胺泡沫的蒸汽管路绝热结构设计与性能验证[J].宇航材料工艺,2021,51(4):109-115.

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  • 收稿日期:2021-03-29
  • 最后修改日期:2021-07-27
  • 录用日期:2021-07-06
  • 在线发布日期: 2021-08-25
  • 出版日期: 2021-08-30
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