A study of the processing characteristics and mechanical properties of multiple recycled rigid PVC

Abstract

This study focuses on the ability of U‐PVC to be processed a number of times. Three different types of U‐PVC were investigated: virgin lead‐stabilized material; virgin calcium/zinc‐stabilized material; and reground, 20‐year‐old, post‐consumer windows. Each material was extruded four times, without any addition of any stabilizers. Samples were taken at each stage for rheological and mechanical analysis. J. Vinyl Addit. Technol. 10:174–178, 2004. © 2004 Society of Plastics Engineers.

Quality control in the recycling stream of PVC from window frames by hyperspectral imaging

“…A more suitable route for material recovery is recycling. According to Ditta et al (2004) 7 the extrusion of old PVC materials gives profiles with almost the same tensile properties as for the new profiles: the elongation at breaks of the rigid PVC material does not change significantly after 20 years of service life compared to the values when new material is used.…”

Weathering of Compounded Products

“…472 Excellent weather resistance is achieved because copolymer is capable of production of UV absorber which protects its surface. 473 Foil protected profiles outperform white profiles.…”

Principles of Stabilization

“…191 In this respect, lead stabilizers are superior to any replacement stabilizers. 191 In this respect, lead stabilizers are superior to any replacement stabilizers.…”