Visualization of polypropylene crystallization in foam extrusion process

Alireza Tabatabaei, Reza Barzegari, Mohammadreza Nofar, Chul B. Park

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Özet

In this study, the crystallization of polypropylene (PP) in the foam extrusion process in the presence and absence of CO2 was investigated by in-situ visualization. The results showed that the plasticization effect of CO2 suppressed the crystallization temperature of PP by -15°C during the extrusion process. Moreover, the CO2 molecules hindered the effects of the flow induced crystallization. Visualization results confirmed that crystallization occurs within the die which affects the foaming behaviors of PP. However, inducing the crystallinity more than a critical value decreases the foam expansion ratio due to the increased stiffness of the matrix.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığı71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
YayınlayanSociety of Plastics Engineers
Sayfalar1703-1707
Sayfa sayısı5
ISBN (Basılı)9781632665300
Yayın durumuYayınlandı - 2013
Harici olarak yayınlandıEvet
Etkinlik71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013 - Cincinnati, OH, United States
Süre: 22 Nis 201324 Nis 2013

Yayın serisi

AdıAnnual Technical Conference - ANTEC, Conference Proceedings
Hacim2

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???event.eventtypes.event.conference???71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
Ülke/BölgeUnited States
ŞehirCincinnati, OH
Periyot22/04/1324/04/13

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