The PVDF (poly(vinylidene fluoride)) is the recommended material for pressure barrier application when the temperature is above 90 C and below 130 C (API Specification 17J). Two grades of PVDFs used in flexible raisers were processed. The grades selected were those for extrusion, but they were compression molded instead. The processing conditions were the same for each grade, from slow to fast cooling rate. The results allowed the evaluation of their performance using a simpler processing technique and, also, to observe how the mechanical properties varied with the cooling rate applied.
Effect of the Cooling Rate on Crystallinity and Tensile Strength of Two PVDF Grades
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Velloso, CS, de Oliveira, GL, Nascimento, CR, & Costa Neto, CAD. "Effect of the Cooling Rate on Crystallinity and Tensile Strength of Two PVDF Grades." Proceedings of the ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. Volume 4: Materials Technology. St. John’s, Newfoundland, Canada. May 31–June 5, 2015. V004T03A025. ASME. https://doi.org/10.1115/OMAE2015-41536
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