塑封器件除湿方案设计与验证  

Design and Verification of Dehumidification Scheme for Plastic Packaging Devices

作　　者：吴立强[1] 王宇[1] 李泱 支钰崧 胡涵 WU Liqiang;WANG Yu;LI Yang;ZHI Yusong;HU Han(Material Center of China Academy of Launch Vehicle Technology,Beijing,100076)

机构地区：[1]中国运载火箭技术研究院物资中心,北京100076

出　　处：《导弹与航天运载技术（中英文）》2023年第2期114-117,共4页Missiles and Space Vehicles

摘　　要：声学扫描试验能够有效剔除塑封器件的分层、裂纹、空洞等内部缺陷,提高型号应用的可靠性。声学扫描试验过程中需要使用水作为超声波传播介质,被试塑封器件需要完全浸入到水中,由于塑封器件封装体是非密封的和易吸湿的,所以无法避免湿气的浸入。目前,中国塑封器件声学扫描试验后的除湿方法缺少指导性的技术规范。为研究高温除湿方法并制定规范,通过称重方式研究塑封器件的吸湿特点,并验证在不同高温下除湿的有效性,在大量的试验验证和分析基础上,制定出型号塑封器件可行的除湿技术规范。The acoustic scanning test can effectively weed out the internal defects such as delamination,crack,cavity,etc.of the plastic packaging devices,and improve the reliability of the model application.During the acoustic scanning test,water is required to be used as the ultrasonic transmission medium,and the plastic packaging devices under test needs to be completely immersed in water,because of the package of the plastic packaging devices is unsealed and easy to absorb moisture,the immersion of moisture cannot be avoided,At present,there is no instructive technical specification for the dehumidification method of domestic plastic packaging devices after the acoustic scanning test.To study the high temperature dehumidification method and formulate specification,the moisture absorption characteristics of plastic packaging devices through weighing are creatively studied,and the effectiveness of dehumidification under different high temperatures is verified.Based on a large number of experimental verification and analysis,a feasible dehumidification technical specification for model plastic packaging devices is formulated.

关 键 词：声学扫描 塑封器件 除湿 称重 

分 类 号：V416[航空宇航科学与技术—航空宇航推进理论与工程]