Temperature effect on the tensile properties of unplasticized polyvinyl chloride

Abstract

The present paper investigates the effect of temperature of unplasticized polyvinyl chloride (UPVC) under tension. UPVC specimens were tensile tested across a range of temperatures (from À20 C to 60 C). The UPVC, like other polymers, was strongly affected by temperature. Those below room temperature were more fragile but had greater tensile strength and stiffness. When room temperature is exceeded, the UPVC test specimens became softer, with lower strength and stiffness. Considering the results, an analytical expression to predict the mechanical behavior of UPVC in tensile tests at different temperatures-more specifically a description of the experimental tensile stress-strain curves by an algebraic equation is proposed. A reasonable approximation of the stress-strain curve was possible to obtain with a minimum of three tests performed at different temperatures. The analytical results were in good agreement with experimental ones.

Plastic pollution amplified by a warming climate

“…As temperatures rise, polymers undergo thermal expansion, leading to inferior properties 9 . Commonly used plastics like polyethylene, polypropylene, and polyvinyl chloride can experience an over 20% decrease in stiffness with a service temperature rise from 23/24 to 40 °C 10 , 11 . Time-dependent changes in mechanical properties, such as creep (slow deformation process of materials under constant or varying load), and stress relaxation (the decrease in stress response under sustained deformation), will also accelerate.…”

Coarse-Grained Molecular Dynamics Modeling of Polyvinyl Chloride: Solvent Interactions, Mechanical Behavior, and Dehydrochlorination Effects

“…Simulated volume versus temperature data of the CG PVC–MELT models, along with the interpolated T g values (green dashed line, with value indicated on the plot). The black squares are the data points and red dashed lines are fits to the data via a regularization function. , The experimental T g values are reported to fall within the range of 350–370 K. − For comparison, the data for the AA model ( T g = 366 K) has been computed in our previous study …”

Application of Digital Twin in the Industry of Axial Hollow-Wall Pipes

“…The peak value of 122 • C was not fixed and varied depending on the type and proportion of materials used in the pipe production [19][20][21]. Nevertheless, the tendency of the elongation at fracture of this PVC material to initially increase and then decrease with temperature has been confirmed [22][23][24].…”