Optimization of Plastisol Processes by Dynamic Mechanical Analysis

摘要

Dynamic mechanical analysis (DMA) can be a particularly useful tool for studying PVC plastisol manufacturing processes.DMA temperature sweeps are uniquely able to characterize plastisol gelation and fusion behavior under low shear stress conditions that are similar to conditions found in many commercial plastisol processing operations.Dynamic mechanical analysis is also well-suited for studying plastisol melt viscosities at low shear rates such as might be encountered in a flexible PVC foaming process or rotomolding process.Likewise,DMA rate sweeps or strain sweeps can give insights into self-association and flow properties in a plastisol which ordinary viscometers cannot provide.