连续碳纤维增强高温环氧复合材料的3D打印

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-04-05 DOI:10.1016/j.coco.2025.102397

Yahui Lyu, Aonan Li, Jiang Wu, Dongmin Yang

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引用次数: 0

摘要

本研究提出了一种新型高温固体环氧树脂体系，并研究了其在连续碳纤维增强热固性复合材料3D打印中的应用。采用novolak环氧树脂和胺固化剂的混合物配制固体环氧体系。它被沉积在连续的碳纤维上，产生浸渍的长丝，然后用于基于熔融长丝制造（FFF）的3D打印，然后是固化过程。该复合材料的玻璃化转变温度（Tg）高达279.24℃，纵向拉伸强度为1006 MPa，弯曲强度为431.8 MPa，适用于高温承载应用。此外，轻质蜂窝复合结构在高温热塑性复合材料制成的3D打印定制模具中打印和固化。最终固化的部分在200°C等温载荷下表现出优异的热稳定性，显示了该系统在航空航天和相关领域先进结构应用的潜力。

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3D printing of continuous carbon fibre reinforced high-temperature epoxy composites

This study presents a novel high-temperature solid epoxy system and investigates its use for 3D printing of continuous carbon fibre reinforced thermoset composites. The solid epoxy system was formulated using a mixture of novolak epoxy resin and amine hardener. It was deposited on the continuous carbon fibres to produce impregnated filament, which was then used for fused filament fabrication (FFF) based 3D printing, followed by a curing process. The resulting printed composite exhibited a high glass transition temperature (T_g) of 279.24 °C, along with a longitudinal tensile strength of 1006 MPa and a flexural strength of 431.8 MPa, making it suitable for high-temperature load-bearing applications. Additionally, a lightweight honeycomb composite structure was printed and cured in a 3D printed bespoke mould made from a high-temperature thermoplastic composite material. The final cured part demonstrated excellent thermal stability under isothermal loading at 200 °C, showcasing the potential of this system for advanced structural applications in aerospace and related fields.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.