The effect of calcium carbonate size and loading level on the impact performance of rigid PVC compounds containing varying amounts of acrylic impact modifier

摘要

This study demonstrates how the impact performance of a rigid polyvinyl chloride (PVC) compound can be affected by the particle size of the calcium carbonate filler and its loading level. The test compounds contain 0 to 8phr of acrylic impact modifier and fillers ranging in size from 3 to 0.07 microns. By taking all three variables into consideration one can, not only optimize a compound's performance, but also lower its cost. Notched Izod and falling weight impact data will be reviewed. Flexural modulus and low temperature impact data are also included.