Effects of different weaving patterns on thermomechanical and dynamic mechanical properties of Kevlar/pineapple leaf fiber hybrid composites

Abstract

In the present study, different weaving patterns (plain, twill, and basket types) on intra‐ply Kevlar and pineapple leaf fiber (PALF) woven hybrid fabrics with epoxy matrix composites were fabricated using compression molding process and their thermomechanical and dynamic mechanical characteristics were examined. From the results, it was evident that pure Kevlar composites have the best flexural, impact, and interlaminar shear strength properties of all composites. However, the basket type weaving pattern on intra‐ply hybrid composites possesses better flexural strength of 282 MPa and flexural modulus of 6 GPa, the impact strength of 16.3 kJ/m2, interlaminar shear strength of 3.43 MPa. Moreover, it is observed that the pure Kevlar and twill type weaving patterns have better thermal stability compared to the remaining composites. The dynamic mechanical analysis results observed plain type intra‐ply hybrid composites possess enhanced storage modulus, loss modulus, and tan delta values due to their greater interfacial adhesion between Kevlar and PALF fiber with epoxy matrix. The differential scanning calorimetry results showed both basket weave and twill weave hybrid composites had the greatest glass transition temperature values of 78 and 76°C, respectively. Further, the thermomechanical analysis showed basket type hybrid composites have the lowest coefficient of thermal expansion and highest glass transition temperature value of 63.34°C. To conclude, these intra‐ply hybrid composites have enhanced mechanical strength and thermal stability, indicating suitable automotive interior parts applications.

Static and dynamic mechanical behavior of intra‐hybrid jute/sisal and flax/kenaf reinforced polypropylene composites

“…Karaduman et al [ 28 ] examined the influence of different weave types quasi‐unidirectional, plain, basket (2/2), and twill (2/2) on the mechanical properties of hemp/epoxy composites. In another similar study, Jeyaguru et al [ 31 ] also analyzed the effect of weaving pattern and hybridization on the mechanical, thermal, and dynamic behavior of intra ply pineapple leaf fiber and kevlar fiber‐reinforced/epoxy composites. Findings of the investigation proved that mechanical strength and thermal stability of intra ply hybrid composites (for all weaving pattern) were enhanced as compared with pure pineapple leaf fiber composites.…”

Thermal characterization of epoxy bilayer hybrid composites reinforced with kenaf and oil palm fibers

“…There are two important points to understand here that the thermal expansion has direct relationship with the weaving pattern of the composites used for hybridization. [ 33 ] Second, hybridization of composite should be able to optimize the thermal, mechanical, acoustic and physical properties along with moisture absorbing capability. [ 34 ]…”

Mechanical and thermal properties of flax/carbon/kevlar based epoxy hybrid composites

“…The identical contact angle value could be attributed to the surface roughness caused using epoxy in the manufacturing process. [84,85]…”