从废物到增值产品:从废弃车辆 (ELV) 制造高电磁干扰屏蔽复合材料
Roxana Moaref1, Shaghayegh Shajari1,2, Uttandaraman Sundararaj1
1Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2L1Y6, Canada.
Polymers
|January 11, 2024
概括
来自退役车辆 (ELV) 的回收塑料保险被转化为导电纳米复合材料. 这种材料为汽车电子产品提供有效的电磁干扰 (EMI) 屏蔽,证明了可持续的废物致富方法.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物工程 聚合物工程
- 可持续制造 可持续制造 可持续制造
背景情况:
- 越来越多的汽车塑料使用需要可持续的废物管理解决方案.
- 退役汽车 (ELV) 塑料废弃物对回收提出了重大挑战.
- 有效的电磁干扰 (EMI) 屏蔽对于汽车电子系统至关重要.
研究的目的:
- 开发一种新的EMI屏蔽材料,使用来自ELV的回收乙烯二烯单体 (EPDM) 废料.
- 研究开发的纳米复合材料的电导率和机械性能.
- 评估将ELV塑料废弃物转化为高价值屏蔽部件的可行性.
主要方法:
- 回收的EPDM废料被纳入了聚烯/碳酸 (PP/CaCO3) 主批.
- 碳纳米管 (CNTs) 通过内部融混合工艺作为导电纳米填充剂添加.
- 电导率,EMI屏蔽效率,以及机械性质的特征.
主要成果:
- 一种含有30重%EPDM和5体积%CNT的纳米复合材料实现了高电导率 (5.2×10−1 S·cm−1) 和EMI屏蔽效率 (30.4dB).
- 观察到的超低透值为0.25体积%的CNT.
- 与非废弃物复合材料相比,纳入ELV废料提高了46%的产量应变和54%的断裂应变.
结论:
- 一种具有良好的EMI屏蔽性能,具有成本效益的轻质纳米复合材料从ELV塑料废料中成功制造出来.
- 开发的材料提供了一种可持续的解决方案,用于管理汽车塑料废物,同时保护敏感的电子元件.
- 这项研究为汽车行业的废物利用开辟了新的途径.
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