Analytical Techniques Characterizing The Behavior Of Polypropylene During Rotational Molding
| Title |
Analytical Techniques Characterizing The Behavior Of Polypropylene During Rotational Molding |
| Publication year |
2008 |
| Language |
English |
| Author |
Doshev, Petar |
| Co-Authors |
Larsen, Åge - Ervik, Ronny - Løvgren, Tor Bertel (Norner) - Iveland, Asbjørn (Norner) |
| Source |
Annual meeting of the Polymer Processing Society PPS-24, Salerno Italy, June 15-19, 2008 |
| Abstract |
The nature of the rotational molding process imposes specific challenges to the employed polymer materials. One of the main concerns is the formation of a homogeneous melt which can be uniformly coated inside the mold. Therefore, the sintering, which is characterized by coalescence of molten thermoplastic particles, is an important parameter defining the suitability of a certain resin for rotomolding. Moreover, the slow and non-uniform cooling during rotational molding predisposes the resulting parts to warpage. This study discusses, on the one hand, the applicability of certain analytical techniques for characterization of the sintering behavior and warpage of polypropylene resins on laboratory scale at conditions relevant for rotational molding. Another aspect of the study is the utilization of these analytical techniques for gaining an insight of the relationship along the chain "molecular structure - processing - mechanical properties" of PP materials. The ultimate goal is to utilize the derived knowledge in the development of novel PP solutions for rotational molding. |