【作者】 程德威； 王惠龄； 董志刚；

【Author】 Cheng Dewei Wang Huling Dong Zhigang(Teaching & Research Section of Refrigeration and Cryogenic Engineering, Huazhong Uni. of Sci.& Tech. , Wuhan 430074)

【机构】 华中理工大学制冷及低温工程教研室；

【摘要】 红外探测微型杜瓦是一种能满足红外光敏元件在低温及真空环境下有效工作的重要装置。杜瓦的绝热性能直接关系到红外探测元件的工作温度和工作时间,这也是杜瓦性能的主要考核指标。这种微型杜瓦的制造材料是添加了一层铝箔的环氧玻璃钢。实验测定了这种环氧玻璃钢材料的导热系数,以及实验研究了铝箔添加层的厚度与所处位置对导热系数的影响。更多还原

【Abstract】 Mini-Dewar of IR detector provides cryogenic and vacuum environment for IR photoelement. The insulation performance of the Dewar is very important to working temperature and time of IR detector element, and this is the main examination index. The mini-Dewar is made of epoxy glass fiber reinforced plastic added in Al film. The thermal conductivity of this material was determined experimentally, and the effects of the location and thickness of Al film on the thermal conductivity were also discussed.更多还原