Hybrid fiber fabric composites from poly ether ether ketone and glass fiber

Abstract

Poly ether ether ketone (PEEK) polymer was extruded into filaments and cowoven into unidirectional hybrid fabric with glass as reinforcement fiber. The hybrid fabrics were then converted into laminates and their properties with special reference to crystallization behavior has been studied. The composite laminates have been evaluated for mechanical properties, such as tensile strength, interlaminar shear strength (ILSS), and flexural strength. The thermal behavior of the composite laminates were analyzed using differential scanning calorimeter, thermogravimetric analyzer, dynamic mechanical analyzer (DMA), and thermomechanical analyzer (TMA). The exposure of the fabricated composite laminates to high temperature (400 and 500 C) using radiant heat source resulted in an improvement in the crystallanity. The morphological behavior and PEEK resin distribution in the composite laminates were confirmed using scanning electron microscope (SEM) and nondestructive testing (NDT). Although DMA results showed a loss in modulus above glass transition temperature (T g ), a fair retention in properties was noticed up to 300 C. The ability of the composite laminates to undergo positive thermal expansion as confirmed through TMA suggests the potential application of glass-PEEK composites in aerospace sector.

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“…Process parameters have also effects on hybrid composite performance. Mechanical properties of hybrid composites molded directly at the process temperature without any preheating are lower than those of preheated molded composites [27]. Shekar et al investigated the mechanical and thermal properties of glass/PEEK co-woven composites.…”

“…Shekar et al investigated the mechanical and thermal properties of glass/PEEK co-woven composites. It was stated that the uniformity in the distribution of resin between various layers of laminate during hybridization plays a major role and have a dominant impact on the mechanical properties of composites especially for aerospace applications [27]. Pandya et al investigated inter-ply hybrid of E-glass/carbon/ epoxy composites.…”

Bending property and fracture behavior of continuous glass fiber-reinforced PEEK composites fabricated by the wrapped yarn method

“…(4) Co-woven method [16][17][18][19] The matrix fiber yarn and the reinforcing fiber yarn are woven into a fabric form in which the warp of the fabric contains only the reinforcing fiber yarn and the weft only contains the matrix fiber yarn. However, because there are many resin-rich areas inside the composite fabricated by this method, the properties of the composites are usually poor.…”

Influence of processing conditions on tensile property of continuous glass fiber–reinforced PEEK composites fabricated by the co-wrapped yarn method

“…Many workers 9 –18 carried out investigations on continuous glass fiber–reinforced polypropylene composites (CGF/PP) from commingled yarn. However, there are very few reports 19–20 on CGF/PEEK composites from commingled yarn, since the high melt viscosity of PEEK and high molding temperature, make it difficult to process. However, these difficulties cannot undermine the advantages of PEEK.…”