通过可扩展和持久的ZnO涂层大大提高了聚乙烯胺的表面闪电压:来自现场生长的礼物
Jiakai Zeng1, Liuqing Yang1, Wenfeng Liu1
1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, Shaanxi People's Republic of China.
ACS applied materials & interfaces
|August 29, 2023
概括
一种新的聚乙胺/氧化涂层有效地分散了表面电荷,并减少了排气. 这种耐用涂层显著提高了太空太阳能电池阵列的闪电电压.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 太空技术 太空技术
背景情况:
- 高表面电绝缘强度对于高功率太空太阳能电池阵列 (SSCA) 是至关重要的.
- 适度导电的表面防止电荷积累和电场扭曲,改善闪电电压.
- 为介电材料开发简单,高效,可扩展和环保的修改策略仍然具有挑战性.
研究的目的:
- 开发一种具有增强电荷衰变特性的耐用聚乙胺/氧化 (PEI/ZnO) 涂层.
- 调查现场制造的氧化 (ZnO) 在改善表面绝缘中的作用.
- 评估PEI/ZnO涂层对表面电荷积累和闪电电压的影响.
主要方法:
- 使用简单和经济的热水战略制造PEI/ZnO涂层.
- 涂层形态的特征,电荷衰变速率和表面特性.
- 分析ZnO对电荷消散,光子屏蔽和闪光时的排气的影响.
主要成果:
- 在现场制造的,类似花的ZnO显著提高了PEI表面的侧向电荷散射.
- ZnO对高能光子表现出屏蔽作用,对PEI分子链产生催化作用,影响出气.
- 加快电荷消散和抑制排气的协同效应使PEI的闪电电压提高了36.7%.
结论:
- 拟议的热水战略为制造耐用PEI/ZnO涂层提供了一种高效,可扩展和简单的方法.
- 由于PEI/ZnO涂层具有更好的表面绝缘性能,因此在SSCA中具有重要的商业应用潜力.
- 这种方法有效地解决了基于太空的介电材料中电荷积累和闪过的挑战.
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