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相关概念视频

Cellulose and Pectic Polysaccharides01:15

Cellulose and Pectic Polysaccharides

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 Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth.  Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
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Method Development for Contactless Resonant Cavity Dielectric Spectroscopic Studies of Cellulosic Paper
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高耐久性纤维素基复合纸,具有优异的电磁干扰屏蔽.

Xingyu Chen1,2, Fuhao Dong2, Sasa Wang3

  • 1Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.

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概括

这项研究开发了一种耐用的碳纳米管/纤维素/热塑性聚氨复合纸,用于电磁干扰 (EMI) 屏蔽. 该材料具有出色的耐磨性,并在各种耐用性测试后保持高屏蔽效率.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 聚合物科学 聚合物科学

背景情况:

  • 有效的电磁干扰 (EMI) 屏蔽对于现代电子产品至关重要,但机械耐用性仍然是灵活和便携式设备的重大挑战.
  • 热塑性聚氨 (TPU) 具有出色的耐磨性和灵活性,使其成为耐用屏蔽材料的有希望的基础.

研究的目的:

  • 使用碳纳米管 (CNTs),纤维素和TPU的复合物开发一种机械坚固和高效的EMI屏蔽材料.
  • 在各种应力条件下调查开发的复合材料的结构完整性,导电性和屏蔽性能.

主要方法:

  • 使用涂层方法制造了碳纳米管/纤维素/热塑性聚氨 (CNT/纸/TPU) 的三层复合纸.
  • 组件的集成是通过CNTs,纤维素和TPU之间的强键实现的.
  • 材料属性包括厚度,导电性,EMI屏蔽效率和耐用性 (水,溶剂,曲,摩擦) 进行了评估.

主要成果:

  • CNT/纸张/TPU复合材料的厚度为0.54毫米,导电率为1040S/m.
  • 实现了69.0dB的特殊的EMI屏蔽效率.
  • 该复合材料表现出了对水,溶剂,曲和摩擦的优异耐用性,保持了其屏蔽性能和机械完整性.

结论:

  • 开发的CNT/纸张/TPU复合材料提供了一个简单的策略,用于创建持久的EMI屏蔽材料.
  • 其强大的机械性能,耐疲劳性和持续的屏蔽性能提高了电子设备的寿命和可靠性.
  • 这种材料为EMI屏蔽提供了可行的解决方案,用于诸如便携式硬件和柔性电子产品等苛刻的应用.