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Wednesday, June 2 • 12:00 - 12:25
Effect of Sizing on the Interfacial and Mechanical Properties of Carbon Fiber (CF) Reinforced Nylons (PA6,6) Composites

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  • Benefits of fiber sizing
  • Sizing for carbon fiber
  • Experimental overview & mechanical property summary: carbon fiber and polyamide composite

The interfacial and mechanical properties of fiber-reinforced polymer composites are significantly influenced by the interfacial characteristics of the fiber-matrix interface and can be altered physically or chemically by fiber surface treatment and sizing chemistries. The choice of sizing is considerably dependent upon the polymer resin matrix to ensure the inter-diffusion of sizing interphase with the resin during processing. Similarly, the thickness and content of sizing on fibers also influence the mechanical and interfacial properties of the resulting resin.
The effects of fiber surface-treatment and sizing on the interfacial and mechanical properties of carbon fiber/nylon (PA6,6) composites are presented herewith. Commercial grade un-sized carbon fibers (CF) were sized with nylon compatible and incompatible sizing. Sized carbon fibers were chopped and mixed with neat PA6,6 resin to prepare injection molded test bars for the investigation of mechanical properties. Single-fiber pullout studies determined the interfacial shear strength (IFSS) of the CF/PA6,6 composites. Also, by utilizing an SEM, fractography determined the composite failure mode of the samples.
The results indicate that the choice of proper sizing and its % loading significantly enhances the mechanical properties of the CF/PA6,6 composite samples. Similarly, the interfacial properties (IFSS) of the CF/PA6,6 composite samples demonstrate a significant enhancement as compared to the un-sized CF. On the contrary, the mechanical and interfacial properties of CF sized with an incompatible sizing for PA6,6 resin deteriorated due to poor interfacial adhesion.

Speakers, Jury Members & Final...
avatar for Gilles LEMOIGNE


Regional Marketing Manager, EMEA, Michelman SARL
Gilles LeMoigne is the Regional Marketing Manager for EMEA at Michelman. He joined Michelman in 2012 as Global Sales Director - Fibers & Composites, transitioned to Strategic Marketing Manager - Fibers & Composites in 2016, and was appointed to his current role in 2019. His over 15... Read More →

Wednesday June 2, 2021 12:00 - 12:25 CEST
Conferences (Hall 6 - Room 611)