Nanomaterial-Enhanced Sizings: Design and Optimisation of a Pilot-Scale Fibre Sizing Line

Dionisis Semitekolos, Ioannis Papadopoulos, Stavros Anagnou, Behnam Dashtbozorg, Xiaoying Li, Hanshan Dong, Costas A. Charitidis*, Ludwig Cardon (Editor)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

This study focuses on the development of a pilot-scale sizing line, including its initial design and installation, operational phases, and optimization of key process parameters. The primary objective is the identification of critical parameters for achieving a uniform sizing onto the fibres and the determination of optimal conditions for maximum production efficiency. This investigation focused on adjusting the furnace desizing temperature for the removal of commercial sizing, adjusting the drying temperature, as well as optimizing the corresponding residence time of carbon fibres passing through the furnaces. The highest production rate, reaching 1 m sized carbon fibres per minute, was achieved by employing a desizing temperature of 550 °C, a drying temperature of 250 °C, and a residence time of 1 min. Furthermore, a range of sizing solutions was investigated and formulated, exploring carbon-based nanomaterial types with different surface functionalizations and concentrations, to evaluate their impact on the surface morphology and mechanical properties of carbon fibres. In-depth analyses, including scanning electron microscopy and contact angle goniometry, revealed the achievement of a uniform coating on the carbon fibre surface, leading to an enhanced affinity between fibres and the polymeric epoxy matrix. The incorporation of nanomaterials, specifically N2-plasma-functionalized carbon nanotubes and few-layer graphene, demonstrated notable improvements in the interfacial shear properties (90% increase), verified by mechanical and push-out tests.
Original languageEnglish
Article number16
Number of pages18
JournalFibers
Volume12
Issue number2
DOIs
Publication statusPublished - 4 Feb 2024

Bibliographical note

Funding
This research was funded by the EU H2020 project “New generation of offshore turbine blades with intelligent architectures of hybrid, nano-enabled multi-materials via advanced manufacturing” (Carbo4Power), under Grant Agreement no. 953192.

Keywords

  • push-out test
  • fibre matrix interface
  • sizing
  • carbon fibre

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