Effects of accelerated and natural ageing on plasticized polyvinyl chloride (PVC)

Influence of polluted atmospheres on the natural aging of poly(vinyl chloride) stabilized with epoxidized sunflower oil

“…The decrease of the mechanical properties at break is due to the fact that several complex chemical changes take place in PVC during weathering, including dehydrochlorination and oxidation, which in turn lead to changes in color, cross linking, chain scission, and general deterioration of the physical properties. [3][4][5][6][7][8][9][10][11][12][13][14][15] To compare the three sites, the variation rates of stress and strain at break were estimated according to the following relations:…”

Investigating the influence of conduit residues on polyurethane plates

“…Then, when hold in environmental condition, they lost the absorbed water and returned to the original mass within 6 days, thereby not accumulating moisture. These results indicate that the material keeps its integrity even in contact with water [5,6] . Figure 6 shows the results of the mass heating curve of water thermally isolated in PU and PU/PVC composites.…”

“…In general, these materials are used for embankment, which can cause solubilization or leaching of certain harmful substances present in these materials. Furthermore, Mancini et al [2,[5][6][7] claims that plastics have low biodegradability and occupy a large amount of space, decreasing the useful life of landfill areas. The effects of degradation can appear after 20-30 years [5,8] .…”

“…It should withstand temperatures from -5 °C to 60 °C for 24 hours without showing any deformity, not allowing the passage of electric current above 100 mA. PVC conduit was chosen as the focus of this research because the main properties of the material encompass thermal insulation, low flammability, and self-extinguishing flame [6,[10][11][12] .…”

Comparative scanning electron microscope study of the degradation of a plasticized polyvinyl chloride waterproofing membrane in different conditions

“…They are typically performed in ventilated ovens and at variable temperatures, depending on the type of material under study. This procedure may include different atmospheres in the test, such as nitrogen or air (9). Plasticizer migration tests are also used with PVC-P (1).…”