Evaluation of the mechanical characteristics of hygrothermally aged 2-D basalt-aramid/epoxy hybrid interply composites

Abstract

Polymer composites used in outdoor applications are exposed to environmental factors such as temperature and moisture which may affect the mechanical performance of the composites. In this study, the influence of moisture absorption on the mechanical properties of basalt-aramid/epoxy hybrid interply composites were evaluated. Two different types hybrid interply composites were taken for the investigation namely (301 A/03 B/301 A) and (451 A/03B/451 A). Composites were prepared using compression molding process and cut specimens were subjected to three different ageing environments for 180 days. Selected ageing conditions are, (i) ambient temperature ageing (ii) Sub-zero temperature ageing (−10°C) and (iii) Humid temperature ageing (40°C and 60% Relative humidity). Mechanical tests of the aged composites were carried out to analyse the behaviour of the composites. Moisture uptake of the specimens follow Fick’s law of diffusion with saturation absorption of 5.44%, 3.12% and 1.80% for ambient, sub-zero and humid specimens respectively. Results revealed that (301 a/03 B/301 a) aged composites possess higher mechanical properties compared to (451 a/03 B/451 a) aged composites. Highest reduction in properties were observed in ambient aged specimens followed by humid and sub-zero specimens. Scanning electron microscopy (SEM) was employed to observe the damage modes of the fractured specimens. Matrix deterioration, micro cracks and fibre fracture were the major types of failures observed in aged laminates.

A review of the effect of hydrothermal aging on the mechanical properties of 2D fiber‐reinforced resin matrix composites

“…In response to the global development of renewable energy and the need for a low-carbon economy and green development, natural fibers such as jute, pine needle and coconut husk have become increasingly crucial in fiber-reinforced composite materials as reinforcement materials. [4][5][6][7][8] There are varieties of resin-based composites such as glass fiber-epoxy-nanoclay composites, 9 basalt-aramid/epoxy composites, 10 polyester nanoclay nanocomposites, 11 epoxy-nanoclay nanocomposites, 12 ceramic/epoxy resin composite material, 13 quartz/epoxy resin 14 and so on. Through reinforcing fibers are made into the two-dimensional planar or three-dimensional structure of the fabric or prefabricated body through the textile processing method, then composite with the matrix material and become highperformance composites.…”

Hydrothermal aging effect on the tensile properties of hybrid aramid/glass/epoxy composites: Comparison of distilled water and seawater

“…Pai et al 14 looked at the mechanical properties of hygrothermally aged basalt/aramid/epoxy hybrid composites. Samples were kept at room temperature aging, sub-zero aging at -10°C, and lastly, 40°C and 60°C with relative humidity.…”