Preparation of high strength PET/PE composites reinforced with continued long glass fibers

Continuous glass fibers were added through extruder head into recycled polyethylene terephthalate/polyethylene (r-PET/PE) alloy to form a composite named long fiber reinforced recycled thermoplastic (LFRT). By pressing plate, products similar to fiberglass were further made. Results of mechanical properties tests showed that the addition of glass fibers increased tensile and flexural strength of LFRT more than 3 and 7 times compared with that of basic material, respectively. In accord with interfacial properties exhibited by contact angle tests, differential scanning calorimetry and scanning electron microscope showed that raising extrusion and hot-pressing temperature resulted in the improving of compatibility between glass fibers and alloy. Dynamic mechanical analysis reported that glass fibers improved the heat deflection temperature greatly.