Retardation of Shrinkage In Phthalocyanine Blue Pigmented Polypropylene Using Nanoclay as Filler

摘要

A common problem with crystalline polymers that occurs when an organic pigment is added to the melt matrix is non-uniform or anisotropic shrinkage. A nanoclay has been compounded into polypropylene. An organic pigment masterbatch was made and then added to the nanoclay/polypropylene (PP) compound. Percent crystallinity was then tested using Differential Scanning Calorimeter (DSC). Percent elongation also was tested using a standard tensile testing machine. Shrinkage differences between colorant with and without nanoclay were measured using the ASTM flame-bar and mold and a two inch disk and mold.