Fabrication and mechanical properties of self-reinforced polyester composites by double covered uncommingled yarn

Abstract

Self‐reinforced poly(ethylene terephthalate) (srPET) composites composed of double covered uncommingled yarn that was prepared through cowrap spinning were hot pressed using a film stacking technique. The optimal consolidation temperature for manufacturing lamina was determined to be 240°C and resulting in the adequate impregnation and reinforcing structural integrity. The srPET laminates that had a plain structure exhibited the excellent tensile responses, whereas those with a twill weaving structure had the highest impact energy absorption. In the plain fabric, there were more interlace points and a higher crook degree of wrap and weft yarns in the periodic unit cell, resulting in more clamp force on the yarns at the interlace points during stretching and more elongation. The srPET composites prepared using basket‐weaving structural fabric broke apart and resulted in the lowest impact energy, which can be attributed to the larger gap between two interweaving points that creates a weak path. A strong influence from the weaving structure was observed for the α relaxation of the composites. Tα shifted to a higher temperature because the reinforcing of the fibers and the structural integrity was more effective. POLYM. COMPOS., 37:3331–3340, 2016. © 2015 Society of Plastics Engineers

Effects of Surface Modification on the Mechanical Properties of Flax/β-Polypropylene Composites

“…Flax and PP yarn designed at a 45/55 volume fraction were used to prepare the double-covered uncommingled yarns (DCUYs; Figure 10 a) using a hollow-spindle spinning machine [ 39 , 40 , 41 ]. The flax yarn was used as the reinforcing core yarn, and PP multifilament yarn was used as the wrapping material, forming linear co-wrap spinning yarn preforms.…”

Mechanical behavior analysis of polypropylene composites with waste PET felt fibers

“…Currently, researchers are focusing on the recycling of materials and technologies, with plastic contamination being a prevalent concern worldwide. It has been observed in marine and freshwater bodies, soils, river systems, and sedimentary environments 1–3 . Plastic materials and their resulting waste are widely recognized as posing significant risks to both terrestrial and aquatic ecosystems, as well as human health 4 .…”

Compression‐molded composites from waste polypropylene carpets

“…Compared to the above wastes, discarded carpets contain woven structures and thermoplastic fibers had more consistent properties. Thus carpets without shredding have high potential to be compression molded into thermoplastic composites with carpet backing fibers as self‐reinforcements .…”