Papers
Plastic Pipes Conference Association # 2012 Barcelona
Fumire Joel
Bioriented pipes or plates show strongly improved mechanical properties compared with standard u-PVC. It is known that biorientation process is less efficient on PVC composition with lower molecular weight. The target of this study is to quantify the relationship between the molecular weight (Kw) of the composition and the mechanical properties obtained after biorientation. The study is realised mainly with bioriented sheets. PVC sheets were prepared with identical formulation from different molecular weights (from K 50 to K 69). These plates were stretched (above Tg) and cooled down in order to realise the biorientation process. The examination of mechanical properties of the plates shows that these properties are at a high level for all K-values except for very low K values ( 57). For the higher K-values, the level of gelation also shows a significant influence on the final properties of the item. These results were confirmed with an industrial scale pipe extrusion.
Related papers
Author(s) : Rachel Anderson, Rujul Mehta, Alex Stolarz, Todd Hogan, Stephanie Whited, Joel Wieliczko
Growing worldwide demand for sustainably made irrigation systems has driven the creation of new resins for longer-lasting, more durable, recycle friendly, and cost-effective pipe that can better tolerate extreme conditions year after year. Microirrigation systems deliver vital water and nutrients where they’re needed...
Author(s) : Suleyman Deveci, Senthil K. Kaliappan, Joel Fawaz, Umesh Gadgoli
A series of non-commercial bimodal high density ethylene-α-olefin copolymers with systematically controlled molecular parameters over a wide range that would result in extremely low and high strain hardening modulus were prepared and tested Strain hardening modulus has been published as a standard test method (ISO...
Author(s) : J.Fumire and S.R.Tan
This paper demonstrates the excellent recyclability of rigid PVC and the strong possibilities of incorporating recyclate into foamed PVC pipes. Calculations show that it is the availability of rigid PVC recyclate, partly due to the long service lives of PVC pipes, which is the limiting factor in further extending the...
Author(s) : J. Fumire
Bioriented PVC items show strongly improved mechanical properties versus standard PVC. It is known that biorientation efficiency is related with PVC Molecular weight since very low molecular weight resins are not very suitable for biorientation. Generally bioriented pipe processors recommend Kw > 64. The target of...
Author(s) : Fumire
The level of gelation is a very important parameter in moulded PVC items since it will determine in a significant extent the mechanical properties of the item. Several methods have been developed already but none was widely used in processing plants except the Methylene Chloride test (MCT) which gives a pass/fail...
Author(s) : Joel Fumire
Author(s) : Fumire
Members of the Association
