Increasing the toughness while reducing the viscosity of carbon nano-tube/polyether imide/polyether ether ketone nanocomposites

IF 5.7 3区材料科学 Q2 Materials Science New Carbon Materials Pub Date : 2024-08-01 DOI:10.1016/S1872-5805(22)60643-7

Jiu-peng Song, Yan Zhao, Xue-kuan Li, Shu Xiong, Shuang Li, Kai Wang

引用次数: 0

Abstract

Polyether ether ketone (PEEK) has good mechanical properties. However, its high viscosity when molten limits its use because it is hard to process. PEEK nanocomposites containing both carbon nanotubes (CNTs) and polyether imide (PEI) were prepared by a direct wet powder blending method using a vertical injection molding machine. The addition of an optimum amount of PEI lowered the viscosity of the molten PEEK by approximately 50% while producing an increase in the toughness of the nanocomposites, whose strain to failure increased by 129%, and fracture energy increased by 97%. The uniformly dispersed CNT/PEI powder reduced the processing difficulty of PEEK nanocomposites without affecting the thermal resistance. This improvement of the strength and viscosity of PEEK facilitate its use in the preparation of thermoplastic composites.

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在降低碳纳米管/聚醚酰亚胺/聚醚醚酮纳米复合材料粘度的同时提高其韧性

聚醚醚酮（PEEK）具有良好的机械性能。然而，其熔融时的高粘度限制了它的使用，因为它很难加工。使用立式注塑机，通过直接湿粉混合法制备了含有碳纳米管（CNT）和聚醚酰亚胺（PEI）的 PEEK 纳米复合材料。添加最佳量的 PEI 可将熔融 PEEK 的粘度降低约 50%，同时提高纳米复合材料的韧性，其破坏应变提高了 129%，断裂能提高了 97%。均匀分散的 CNT/PEI 粉末降低了 PEEK 纳米复合材料的加工难度，同时不会影响其热阻。PEEK 强度和粘度的提高有助于其在热塑性复合材料制备中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

New Carbon Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.10

自引率

8.80%

发文量

3245

审稿时长

5.5 months

期刊介绍： New Carbon Materials is a scholarly journal that publishes original research papers focusing on the physics, chemistry, and technology of organic substances that serve as precursors for creating carbonaceous solids with aromatic or tetrahedral bonding. The scope of materials covered by the journal extends from diamond and graphite to a variety of forms including chars, semicokes, mesophase substances, carbons, carbon fibers, carbynes, fullerenes, and carbon nanotubes. The journal's objective is to showcase the latest research findings and advancements in the areas of formation, structure, properties, behaviors, and technological applications of carbon materials. Additionally, the journal includes papers on the secondary production of new carbon and composite materials, such as carbon-carbon composites, derived from the aforementioned carbons. Research papers on organic substances will be considered for publication only if they have a direct relevance to the resulting carbon materials.