CNT 接枝对超高分子量聚乙烯纤维/高密度聚乙烯复合材料机械性能的影响

IF 1.6 4区化学 Q4 CHEMISTRY, PHYSICAL

Surface and Interface Analysis Pub Date : 2024-06-22 DOI:10.1002/sia.7339

Li Jian, Xu Gaofeng

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引用次数: 0

摘要

为了改善超高分子量聚乙烯（UHMWPE）纤维增强高密度聚乙烯（HDPE）复合材料的力学性能，在超高分子量聚乙烯纤维上接枝了碳纳米管（CNT）。通过注塑工艺制备了超高分子量聚乙烯纤维/高密度聚乙烯复合材料，并研究了碳纳米管含量对复合材料力学性能的影响。结果表明，CNT 的质量分数会显著影响复合材料的力学性能。当 CNT 含量为 4 wt% 时，与 UHMWPE 纤维/CNT/HDPE 复合材料和 UHMWPE 纤维/HDPE 复合材料相比，UHMWPE 纤维/处理过的 CNT/HDPE 复合材料的拉伸强度、拉伸模量、弯曲强度、弯曲模量和冲击强度都有所提高。当 CNT 含量为 4 wt% 时，上述性能最佳。超高分子量聚乙烯纤维/高密度聚乙烯复合材料中 CNT 的主要作用机理是拉拔断裂、架桥效应和裂纹挠曲效应。本研究为超高分子量聚乙烯纤维/高密度聚乙烯复合材料的界面设计提供了新的见解，为其进一步发展铺平了道路。

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The effect of CNT grafting on the mechanical properties of the UHMWPE fiber/HDPE composite

In order to improve the mechanical properties of the ultra‐high molecular weight polyethylene (UHMWPE) fiber‐reinforced high‐density polyethylene (HDPE) composite, carbon nanotube (CNT) was grafted on the UHMWPE fiber. The UHMWPE fiber/HDPE composite was prepared by injection molding process, and the effects of CNT contents on the mechanical properties of composite materials were studied. The results show that the mass fraction of CNT will significantly affect the mechanical properties of the composite. When the CNT content is 4 wt%, the tensile strength, tensile modulus, flexural strength, flexural modulus, and impact strength of the UHMWPE fiber/treated CNT/HDPE composite increased compared to the UHMWPE fiber/CNT/HDPE composite and UHMWPE fiber/HDPE composite. When the CNT content is 4 wt%, the above‐mentioned performance is the best. Pull‐out and fracture, bridging effect, and crack deflection effect are the main mechanisms of CNTs in UHMWPE fiber/HDPE composites. This study provides new insights into the interface design of UHMWPE fiber/HDPE composites and paves the way for their further development.

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来源期刊

Surface and Interface Analysis 化学-物理化学

CiteScore

3.30

自引率

5.90%

发文量

130

审稿时长

4.4 months

期刊介绍： Surface and Interface Analysis is devoted to the publication of papers dealing with the development and application of techniques for the characterization of surfaces, interfaces and thin films. Papers dealing with standardization and quantification are particularly welcome, and also those which deal with the application of these techniques to industrial problems. Papers dealing with the purely theoretical aspects of the technique will also be considered. Review articles will be published; prior consultation with one of the Editors is advised in these cases. Papers must clearly be of scientific value in the field and will be submitted to two independent referees. Contributions must be in English and must not have been published elsewhere, and authors must agree not to communicate the same material for publication to any other journal. Authors are invited to submit their papers for publication to John Watts (UK only), Jose Sanz (Rest of Europe), John T. Grant (all non-European countries, except Japan) or R. Shimizu (Japan only).