Polyetherketoneketone/carbon fiber composites with an amorphous interface prepared by solution impregnation

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)60646-2

Feng Zhang , Bo-lan Li , Meng-xiao Jiao , Yan-bo Li , Xin Wang , Yu Yang , Yu-qiu Yang , Xiao-hua Zhang

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引用次数: 0

Abstract

Interfacial adhesion between carbon fibers (CF) and polyetherketoneketone (PEKK) is a key factor that affects the mechanical performances of their composites. It is therefore of great importance to impregnate the CF bundles with PEKK as efficiently as possible. We report that PEKK with a good dispersion in a mixed solution of 4-chlorophenol and 1,2-dichloroethane can be introduced onto CF surfaces by solution impregnation and curing at 280, 320, 340 and 360 °C. The excellent wettability or infiltration of the PEKK solution guarantees a full covering and its tight binding to CFs, making it possible to evaluate the interfacial shear strength (IFSS) with the microdroplet method. The interior of the CF bundles is completely and uniformly filled with PEKK by solution impregnation, leading to a high interlaminar shear strength (ILSS). The maximum IFSS and ILSS reached 107.8 and 99.3 MPa, respectively. Such superior shear properties are ascribed to the formation of amorphous PEKK in the small spaces between CFs.

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通过溶液浸渍法制备具有无定形界面的聚醚酮酮/碳纤维复合材料

碳纤维（CF）与聚醚酮酮（PEKK）之间的界面粘附力是影响其复合材料机械性能的关键因素。因此，尽可能有效地将碳纤维束浸渍到 PEKK 中非常重要。我们报告了在 4-氯苯酚和 1,2-二氯乙烷的混合溶液中具有良好分散性的 PEKK 可通过溶液浸渍和在 280、320、340 和 360 °C 下固化的方法引入 CF 表面。PEKK 溶液极佳的润湿性或浸润性保证了它的全面覆盖和与 CF 的紧密结合，这使得用微滴法评估界面剪切强度（IFSS）成为可能。通过溶液浸渍，CF 束的内部完全均匀地充满了 PEKK，从而获得了很高的层间剪切强度（ILSS）。最大层间剪切强度（IFSS）和层间剪切强度（ILSS）分别达到 107.8 和 99.3 兆帕。这种优异的剪切性能归因于在 CF 之间的小空隙中形成了无定形 PEKK。

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.