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相关概念视频

Plasticizers01:31

Plasticizers

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Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
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Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding
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可塑性导电塑料具有优化的机械性能.

Arfat Anis1, Abdullah Alhamidi1, Zahir Bashir2

  • 1SABIC Polymer Research Center (SPRC), Chemical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia.

Polymers
|February 10, 2024
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概括

这项研究开发了一种使用碳纤维在PBT/rPET混合物中的导电塑料,实现电磁干扰屏蔽和改进机械性能. 该配方为高性能导电材料提供了可行的解决方案.

关键词:
碳纤维是一种碳纤维.导电性塑料塑料的导电性塑料机械性能 机械性能 机械性能聚合物混合物 聚合物混合物回收PET的回收使用.增强聚合物复合材料的复合材料.

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科学领域:

  • 材料科学与工程 材料科学与工程
  • 聚合物科学 聚合物科学
  • 纳米技术 纳米技术

背景情况:

  • 在塑料中实现电导性,用于诸如静电电荷消散和电磁干扰 (EMI) 屏蔽等应用,往往会损害机械性能.
  • 传统的导电填充剂,如碳黑和CNT,可以降低拉伸强度,延伸和抗冲击性.
  • 需要导电性塑料配方,在电性能方面保持或增强机械完整性.

研究的目的:

  • 开发一种注射可塑导电塑料配方,具有EMI屏蔽能力.
  • 在导电塑料中实现良好的机械性能,包括刚性,强度和抗冲击性.
  • 调查使用短碳纤维作为PBT/rPET矩阵中的导电填充物,并使用SEBS增强.

主要方法:

  • 使用50/50的PBT和回收PET (rPET) 混合物制造塑料基质.
  • 加入短碳纤维 (CF) 作为导电填充物.
  • 添加了 styrene-ethylene-butadiene-styrene (SEBS) 作为强化剂,以增强抗冲击能力.
  • 评估机械性能 (模块,强度,抗冲击性) 和导电性.
  • 显微镜分析 (扫描电子显微镜) 来评估填充剂-矩阵结合.

主要成果:

  • PBT/rPET混合物最初具有较低的抗冲击能力,SEBS改进了这种性能,尽管模量和强度有所降低.
  • 短碳纤维成功恢复并超过PBT/rPET矩阵的原始模量和强度,同时赋予导电性.
  • 该配方实现了EMI屏蔽范围内的导电性,碳纤维与PBT/rPET矩阵之间具有良好的结合.
  • 与基础PBT/rPET相比,最终材料显示了增强的模量,强度和抗冲击性.

结论:

  • 成功开发了一种可注塑导电塑料配方,具有高导电性和改进的机械性能 (模块,强度,抗冲击性).
  • 短碳纤维是PBT/rPET混合物的有效导电填充物,提供性能和成本效益的平衡.
  • 开发的材料为需要电导性和强大的机械性能的应用提供了可行的解决方案.