Wuyang Huang; Kiho Cho; Martina Stenzel; B. Gangadhara Prusty

DOI:

Abstract

The interfacial adhesions between inorganic short glass fibres and organic PEEK matrix play a crucial role in the mechanical properties of short glass fiber reinforced PEEK (SGFR-PEEK) bio-composites, while the inherent chemical inertness of PEEK imposes great challenges on the fibre-matrix interfacial modifications. In this experimental investigation, the effects of monomer/polymer selection, chemical concentration, UV-modification time on the thermal, mechanical properties and surface wettability of SGFR-PEEK composites were experimentally studied for the first time. The photo-polymerisation effectively modified the chemical structure, surface wettability of SGFR-PEEK composites and caused significant improvements on the tensile modulus (up to 16.35%) and flexural modulus (up to 11.63%) of SGFR-PEEK composites without noticable decrement on thermal properties, manifesting great potential and advantages for the developments of high-performance bio-composites.

Keywords

PEEK ; short S-Glass fibre ; UV-modification ; fibre-matrix interfacial adhesion ; mechanical properties ; surface wettability

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