The effect of particle toughening layers on the material processibility and forming characteristics of carbon fibre/epoxy prepregs

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY Composites Part B: Engineering Pub Date : 2024-10-19 DOI:10.1016/j.compositesb.2024.111907

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Abstract

Introducing toughening materials between laminas is a common approach to enhance the interlaminar toughness of composite materials, thereby improving the crack resistance and damage tolerance. Various physical formats of toughening materials, including particles, veils, and mats, have been introduced. However, the incorporation of solid and separately phased tougheners alters not only the mechanical characteristics of prepregs but also their processability during layup and forming. This alteration can lead to unpredictable forming behaviour and the generation of defects during manufacturing, which has not been extensively investigated.

In this work, the effect of interleaving tougheners on the forming and consolidation characteristics of carbon/epoxy prepregs was investigated by measuring the interply friction and bulk factor of prepreg stacks incorporating polyamide particle tougheners of various sizes and shapes at the ply interfaces. Additionally, the feasibility of single diaphragm forming without heating by utilising the low friction characteristic of the particle-coated prepreg surface was explored.

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颗粒增韧层对碳纤维/环氧树脂预浸料的材料加工性和成型特性的影响

在层间引入增韧材料是增强复合材料层间韧性的常用方法，从而提高抗裂性和损伤容限。目前已经引入了各种物理形式的增韧材料，包括颗粒、纱和毡。然而，固体和单独分相增韧剂的加入不仅会改变预浸料的机械特性，还会改变其在铺层和成型过程中的可加工性。在这项工作中，通过测量在层界面加入不同尺寸和形状的聚酰胺颗粒增韧剂的预浸料堆的层间摩擦力和体积因子，研究了交错增韧剂对碳/环氧预浸料成型和固结特性的影响。此外，还探讨了利用颗粒涂层预浸料表面的低摩擦特性，在不加热的情况下进行单隔膜成型的可行性。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.