超分支的氧化-共振适应网络用于可回收的超低电解电性环氧体
Xiaoyan Qiu1, Zhangqin Yang1, Bo Zhou1
1National Key Laboratory of Advanced Polymer Materials, Polymer Research Institute, Sichuan University, Chengdu, 610065, China.
Angewandte Chemie (International ed. in English)
|October 18, 2025
概括
我们开发了可回收的环氧印刷电路板 (PCB),使用了新的树突动态交叉连接器. 这些材料实现了高频电子产品的超低介电损耗,同时实现了闭环循环回收,大大减少了电子废物和生态毒性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续电子产品 可持续的电子产品
背景情况:
- 环氧热对于高频电子 (5G/6G) 来说至关重要,但由于不能回收利用,会产生电子废物.
- 现有的可回收的共价适应性网络 (CAN) 在千兆赫兹 (GHz) 频率下遭受高介电损失.
- 在电子材料的可回收性和介电性能之间存在一个权衡.
研究的目的:
- 开发可回收的环氧基印刷电路板 (PCB),用于高频应用,具有超低介电损耗.
- 设计新型可调节型树突型动态交叉连接器,以精确控制材料特性.
- 为了协调电子材料中循环性和高频性能的相互矛盾的需求.
主要方法:
- 合成可调节生成的树突动态交叉连接剂,通过O-化瓦尼林衍生的阿尔多克西姆与甲酸盐.
- 制造的分级分支环氧CANs具有控制的纳米形态,自由体积和固体限制.
- 研究了开发的PCB的介电性质,机械强度,阻燃性和可回收性.
主要成果:
- 在10 GHz实现了创纪录的低介电常数 (2.02) 和损耗 (0.005).
- 证明了71.53%的X波段阻抗匹配和高抗拉强度 (256 MPa) 的改进.
- 在80°C的闭环回收后,获得了V-0阻燃性和98.9%的生态毒性降低.
结论:
- 精密的树突聚合和拓控制使可回收的PCB具有特殊的高频介电性能.
- 开发的材料为下一代电子产品提供了可持续的解决方案,解决了电子废物和性能要求.
- 这种方法成功地协调了循环性和GHz频段性能之间的固有权衡.
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