Dynamic compression and tensile responses of an epoxy matrix composites at high strain rate

Abstract

To study the dynamic compression and tensile mechanical behaviors of a bicomponent epoxy resin matrix composites, which were filled with a semi-crystalline thermoplastic Polyether-ether ketone (PAEK-C) resin, at high strain rate, the dynamic compression and tensile experiments were carried out on a modified split Hopkinson pressure bar (SHPB) and high speed material apparatus, respectively. Stress-strain curves of the epoxy resin matrix composites were obtained and analyzed. Damage mechanism under high strain rate was characterized through the scanning electron microscope (SEM) observation. Results of the dynamic compression tests indicated that, although the effects of strain rate remarkably influenced the variations in stress, the behaviors of the epoxy resin matrix played a more significant role than strain rate in the determination of the high strain rate. It was reflected through increased ductility of the samples and reduced slope of the stress-strain curves. The dynamic impact tensile tests results show that, PAEK-C fillers exhibited dramatic toughening effect. The increase of the volume fraction of PAEK-C rich phase inevitably forces the crack to overcome more tearing deformation of PAEK-C rich phase. At the same time, the enhancement of plastic capacity may also induce a larger range of cooperative deformation at the crack tip.

Curing kinetics, thermal and erosive wear characteristics of bismaleimide blends modified by polyaryletherketone

“…Previous studies have shown that the mechanical properties of the thermosetting resins were significantly improved without reducing the heat resistance by incorporating PAEK resin. 20,21…”

“…Polyaryletherketone (PAEK) is a family of the highperformance engineering thermoplastics notable for their excellent mechanical properties, high temperature performance and thermal stability. [17][18][19] It has been extensively used in aerospace, electronics, automobile manufacturing, and other particularly demanding industries. Also, it has been widely applied in modifying polymer composites.…”

“…Previous studies have shown that the mechanical properties of the thermosetting resins were significantly improved without reducing the heat resistance by incorporating PAEK resin. 20,21 Polymeric materials have been widely used in many tribological applications due to their controllable frictional and wear properties coupled with corrosion resistance, damping property, light weight and low cost. Wear directly affects the service life of the industrial parts and seriously affected the production.…”

Tribological and thermal characteristics of an epoxy-based composite containing polyaryletherketone

“…Our previous work indicated that the PAEK-C could enhance the dynamic impact mechanical and the nanomechanical properties of the epoxy resin matrix composites significantly. 34,35…”

Effect of dry sliding wear parameters on the specific wear rate of α-MnO2-epoxy nanocomposites

“…7 Epoxies, also known as thermosetting eco-friendly polymers, are extensively used as a matrix material in the manufacturing of sophisticated high-performance materials due to their dimensional stability, chemical stability, ease of processing, low shrinkage, excellent mechanical, thermal, and physical characteristics. [8][9][10][11][12] The properties viz. elastic modulus, 13,14 tensile strength, 14 flexural strength, 15,16 impact strength, 15,16 friction coefficient, 13 wear resistance, 13 thermal stability, 13,14,17 and flame retardancy 17,18 of epoxy is improved with the addition of nano-filler materials.…”