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相关概念视频

Polymer Classification: Architecture01:14

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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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相关实验视频

Updated: Jun 9, 2025

Cutting Procedures, Tensile Testing, and Ageing of Flexible Unidirectional Composite Laminates
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多层结构性聚乳酸织物用于阻燃性,耐久性和电磁干扰屏蔽.

Cen Chu1, Yifei Gao1, Xiangyu Ma1

  • 1Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei 230009, China.

International journal of biological macromolecules
|October 29, 2024
PubMed
概括

这项研究开发了耐用,多功能的聚乳酸 (PLA) 织物,具有增强的阻燃性和电磁干扰 (EMI) 屏蔽,使用生物基材料和MXene. 经过处理的织物为可持续应用提供了出色的安全性和性能.

关键词:
电磁干扰屏蔽 电磁干扰屏蔽阻燃剂是一种阻燃剂.聚乳酸面料织物 聚乳酸面料

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相关实验视频

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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
  • 纳米技术纳米技术

背景情况:

  • 可持续发展需要具有增强安全特征的材料,例如阻燃性和电磁干扰 (EMI) 屏蔽.
  • 聚乳酸 (PLA) 织物提供了可生物降解的基础,但需要功能化,用于先进的应用.
  • 整合生物基阻燃剂和导电纳米材料为多功能织品提供了一个有希望的方法.

研究的目的:

  • 开发具有提高阻燃性和电磁干扰 (EMI) 屏蔽的多功能聚乳酸 (PLA) 织物.
  • 研究生物基阻燃剂和MXene导电层在PLA织物上的共价集成.
  • 为了评估改性PLA织物的耐用性和疏水性质.

主要方法:

  • 使用植物酸 (PA) 和聚乙胺 (PEI) 作为生物基阻燃剂,与3-glycidyl oxy propyl trimethoxsilane (GPTMS) 交联.
  • 包含一个导电性MXene层,与阻燃剂和PLA织物共聚结合.
  • 应用聚甲基 (PDMS) 进行疏水处理,并对阻燃性,EMI屏蔽和耐久性进行严格的测试.

主要成果:

  • PA-PEI-MXene-60 PLA 织物表现出异常的阻燃性,具有 35.6% 的高限制氧指数 (LOI) 和高峰热释放率 (pHRR) 和总热释放率 (THR) 的显著降低.
  • 实现了54dB的优异电磁干扰 (EMI) 屏蔽效率.
  • 经过处理的织物表现出优异的疏水性 (水接触角度为148.8°),并且在经过多次曲和磨损测试后保持了高的EMI屏蔽效率,表明了优异的耐用性.

结论:

  • 开发的多功能PLA织物为安全,可持续和耐用的材料提供了有前途的解决方案,具有联合阻燃和EMI屏蔽性能.
  • 协同结合策略确保了集成阻燃剂和MXene层的稳定性和有效性.
  • 这项研究对提高高性能织品的应用要求作出了重大贡献.