ABSTRACT
The footwear industry uses in its products various raw materials derived from the plastics sector. One of the most used is the synthetic PVC laminate, used in the construction of leather because of the great versatility of colors, prints and thicknesses. The laminate is composed of PVC and textile fiber, usually in the mass ratio of 60/40. Cutting of parts generates a large amount of shavings that are normally discarded or deposited in landfills or ARIPs (Hazardous Industrial Waste Landfills). The present work evaluates the feasibility of incorporating these residues in the form of powder in virgin PVC matrix for use in soils in proportions of 0, 5, 15, 25, 35 pcr (parts per cent of resin), as well as their mechanical performance. Physical-mechanical properties with traction, shore A hardness and bonding, scanning electron microscopy (SEM) and infrared spectroscopy (FTIR) were evaluated. The results of the hardness and tensile tests showed a decrease in performance as the concentration of residue in the composite increased. The bond strength also showed a decrease in the final resistance obtained by the pull out effect, confirmed by fracture surface micrographs. Mixtures with powdered laminate residues may be said to have acceptable characteristics, in accordance with the standards indicated and the standards specified for use as flooring material. In addition, the incorporation of this residue reduces the amount of material discarded reducing the environmental impact.
Keywords:
PVC; composites; synthetic laminate waste; recycling
