Abstract

A composite based on ultra-high-molecular-weight polyethylene (UHMWPE) added with 1 wt % of multiwalled carbon nanotubes (MWCNTs) with a high permittivity (ε = 4.5) and a low dielectric loss (tanδ = 10^–2) in the frequency range from 100 Hz to 100 MHz has been synthesized, and its main mechanical characteristics have been studied. The material has a low (22 MPa) breaking strength, a high (700%) tensile elongation, and an abrasion resistance higher than that of pure UHMWPE by 37%. It is shown using the X-ray diffraction and differential scanning calorimetry data that the changes in the mechanical properties of the composite are related to the changes in the polymer matrix structure under the action of the high-intensity ultrasonic radiation used for embedding MWCNTs into the polymer.

中文翻译：

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碳纳米管修饰的高介电常数超高分子量聚乙烯基复合材料的电学和力学性能

摘要

一种基于超高分子量聚乙烯（UHMWPE）的复合材料，在其中添加了1 wt％的高介电常数（ε= 4.5）和低介电损耗（tanδ= 10 ^–2）的多壁碳纳米管（MWCNT ）。合成了100 Hz至100 MHz的频率范围，并研究了其主要机械特性。该材料的断裂强度低（22 MPa），拉伸伸长率高（700％），耐磨性比纯UHMWPE高37％。使用X射线衍射和差示扫描量热法数据表明，在用于将MWCNT嵌入到碳纳米管中的高强度超声辐射的作用下，复合材料的机械性能变化与聚合物基质结构的变化有关。聚合物。