Preparing water-based phosphorylated PEEK sizing agent for CF/PEEK interface enhancement

The weak interfacial bonding between fiber and matrix needs to be improved for obtaining good mechanical properties of carbon fiber/polyetheretherketone (CF/PEEK) composites due to the inert nature of both components. Organic sizing is a typical interface improvement method, but it is harmful to bot...

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Veröffentlicht in:Composites science and technology 2022-01, Vol.217, p.109096, Article 109096
Hauptverfasser: Lyu, Hanxiong, Jiang, Naiyu, Hu, Jiqiang, Li, Yingze, Zhou, Nan, Zhang, Dongxing
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container_start_page 109096
container_title Composites science and technology
container_volume 217
creator Lyu, Hanxiong
Jiang, Naiyu
Hu, Jiqiang
Li, Yingze
Zhou, Nan
Zhang, Dongxing
description The weak interfacial bonding between fiber and matrix needs to be improved for obtaining good mechanical properties of carbon fiber/polyetheretherketone (CF/PEEK) composites due to the inert nature of both components. Organic sizing is a typical interface improvement method, but it is harmful to both the human and local environment. Here, a two-step process is proposed to modify PEEK for preparing an environmentally friendly water-based sizing agent, involving taking the ketone reduction via NaBH4 and then an esterification reaction with phosphoric acid. This PEEK derivative has good thermal stability, and its dispersion in water is stable for one month. It improves the interface between CF and PEEK by increasing the wettability and surface roughness of CFs, ultimately enhancing the mechanical properties of composites. The two-step process of fabricating the PEEK derivative may have potentials in the industrial application of the polyaryletherketone family. [Display omitted] •Proposing a novel and facile two-step modification route on PEEK.•Preparing eco-friendly water-based phosphorylated PEEK sizing agent.•Excellent dispersion stability of phosphorylated PEEK in water over one month.•Enhancing interface between CF and PEEK by phosphorylated PEEK sizing.
doi_str_mv 10.1016/j.compscitech.2021.109096
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source ScienceDirect Journals (5 years ago - present)
subjects Bonding agents
Bonding strength
Carbon fiber reinforced plastics
Carbon fibers
Composite materials
Esterification
Industrial applications
Interface
Mechanical properties
Nanoparticles
Phosphoric acid
Polyaryletherketones
Polyether ether ketones
Polymer matrix composites
Polymer-matrix composites (PMCs)
Sizing
Surface roughness
Surface treatments
Thermal stability
Wettability
title Preparing water-based phosphorylated PEEK sizing agent for CF/PEEK interface enhancement
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