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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Preparation of Thermally Conductive Polymer Composites with Good Electromagnetic Interference Shielding Efficiency Based on Natural Wood-Derived Carbon Scaffolds
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Preparation of Thermally Conductive Polymer Composites with Good Electromagnetic Interference Shielding Efficiency Based on Natural Wood-Derived Carbon Scaffolds

机译：基于天然木材衍生碳支架的电磁干扰屏蔽效率良好的热导电聚合物复合材料的制备

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摘要

In the modern electronic industry, multifunctional polymer composites associated with heat removal and electromagnetic shielding are highly needed. This work reports a method to fabricate epoxy composites with high electromagnetic interference shielding effectiveness (EMI SE) and thermal conductivity (TC) using natural wood as a starting material via backfilling epoxy into wood-derived carbon scaffolds. The results showed that after carbonization at 1200 degrees C, the carbon scaffolds could be well-maintained, which could serve as thermally and electrically conductive pathways in the composites. The resultant composites at the carbon loading of 7.0 vol % possessed a high TC of 0.58 W/(m.K), an electrical conductivity of about 12.5 S/m, and an average EMI SE of 27.8 dB over the X-band at the thickness of only 2 mm. Our work proposed a promising strategy to use cost-effective and green materials to fabricate multifunctional polymer composites.
机译：在现代电子工业中，非常需要与热除去和电磁屏蔽相关的多功能聚合物复合材料。 该工作报告了使用天然木材作为起始材料通过将环氧树脂回填到木材衍生的碳支架的原料中制造具有高电磁干扰屏蔽效果（EMI SE）和导热率（TC）的环氧树脂复合材料的方法。 结果表明，在1200摄氏度下碳化后，可以保持良好维持碳支架，其可以用作复合材料中的热和导电途径。 碳载荷的所得复合材料7.0体积％具有0.58W /（MK）的高Tc，电导率约为12.5 s / m，并且在厚度的X波段上的平均EMI SE为27.8dB 只有2毫米。 我们的工作提出了一种希望使用具有成本效益和绿色材料来制造多功能聚合物复合材料的有希望的策略。

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