摘要
针对航天领域传统硅橡胶粘贴聚酰亚胺薄膜加热器存在的粘贴效率低、粘贴质量一致性差、鼓包失效等问题,拟在目前批产卫星中引入快速粘贴的背胶型加热器用于卫星热控系统。文章提出一种丙烯酸酯基交联体系背胶型聚酰亚胺薄膜加热器,并开展了3种典型工况下的真空热试验,通过阶梯控温方式对比分析背胶型与传统硅橡胶型加热器的失效阈值及热性能。结果表明,背胶型加热器在常温和低温下均表现出更高的失效阈值和更优的界面稳定性,热响应快,温度波动小,能在-80~180℃范围内稳定工作,并在0.9~1 A极限电流下持续运行超过24 h无失效。背胶型聚酰亚胺薄膜加热器具备良好的航天热适应性,可有效替代传统硅橡胶工艺,作为航天热控组件高效生产的优选技术方案。
To address the low bonding efficiency,poor bonding consistency,and blister-related failures of conventional silicone-rubber-bonded polyimide film heaters in spacecraft thermal control,rapidly applicable pressure-sensitive adhesive(PSA)-backed heaters are planned for implementation in current batch-produced satellites.A PSA-backed polyimide film heater based on an acrylic-ester crosslinked system was developed,and vacuum thermal tests under three typical operating conditions were conducted.The failure thresholds and thermal performance of the PSA-backed and conventional silicone-rubber heaters were quantitatively compared using a stepped-temperature heating scheme.The results indicate that the PSA-backed heater exhibits higher failure thresholds and improved interfacial stability at both room and low temperatures,and features faster thermal response and smaller temperature fluctuations.It operates stably from-80℃to 180℃and can sustain continuous operation for over 24 h without failure under limit currents of 0.9-1 A.These findings demonstrate that the PSA-backed polyimide film heater offers strong thermal adaptability for aerospace applications and can effectively replace the traditional silicone-rubber bonding process,providing an efficient technical solution for the production of spacecraft thermal control components.
作者
马罗伟
郎浩杰
赵连征
邱少杰
李俊波
MA Luowei;LANG Haojie;ZHAO Lianzheng;QIU Shaojie;LI Junbo(College of Mechanical Engineering,Donghua University,Shanghai 201620,China;Galaxy Space Technology Co.,Ltd,Nantong 226000,China)
出处
《航天器环境工程》
2025年第6期612-618,共7页
Spacecraft Environment Engineering
基金
上海市自然科学基金项目“基于二维材料的表面精准超滑研究”(编号:24ZR1401200)。
关键词
背胶型聚酰亚胺薄膜加热器
真空热试验
组件热性能
鼓包失效
pressure-sensitive adhesive-backed polyimide film heater
vacuum thermal test
component thermal performance
blister failure
