Abstract
An in-line method for monitoring the solidification process during injection molding of semicrystalline polymers (demonstrated previously in J. Appl. Polym. Sci.2003, 89, 3713) is based on a simple device, where an additional ejector pin is pushed on the injection molded part at different times during the solidification phase. The ‘indentation depth profile’, i.e., residual deformation as a function of time, was obtained and allowed to determine the evolution of the solidification front in the mold as a function of the cooling time. The present work shows the reliability and the powerfulness of the aforementioned method for a large variety of different semicrystalline polymers (PET, PBT, polyamide-6 PA6, isotactic poly(propylene) iPP) characterized also by different molecular weight and/or nucleating agents. The results show that the indentation test may be considered as a ‘predictive’ tool to qualitatively and quantitatively compare the solidification process of different polymers and polymer grades during injection molding.
Lingua originale | Italian |
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pagine (da-a) | 1056-1062 |
Rivista | Macromolecular Materials and Engineering |
Volume | 290 |
Stato di pubblicazione | Published - 2005 |
All Science Journal Classification (ASJC) codes
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- ???subjectarea.asjc.1600.1605???
- ???subjectarea.asjc.2500.2507???
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