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DTSTART;TZID=Europe/Brussels:20260730T000000
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DTSTAMP:20260607T185245
CREATED:20260519T095412Z
LAST-MODIFIED:20260519T095749Z
UID:634-1785369600-1785455999@vinylpluspipes.eu
SUMMARY:SAPPMA Webinar
DESCRIPTION:PVC-U Pipes: Optimal Extrusion Conditions for a 100+ Year Design Lifetime (Part II) \n\n\n\nPresenter: Joaquín Lahoz Castillo\, CEISLAB. \n\n\n\nThe presentation is based on a research project launched in 2020 by CEIS and PVC4Pipes\, now VinylPlus Pipes\, to generate public data demonstrating that pressure PVC-U pipes can deliver a service life of more than 100 years. \n\n\n\nThe study examines how extrusion temperature and quality control testing relate to the long-term performance of PVC-U 250 pressure pipes. Calcium-based stabilised pipes were extruded under different processing conditions and assessed using DSC onset temperature\, degree of gelation\, resistance to dichloromethane and long-term hydrostatic strength prediction according to ISO 9080. \n\n\n\nThe results indicate that an extrusion temperature of 180°C is sufficient to achieve MRS250 classification. Moderate increases in processing temperature can improve predicted long-term performance\, while higher temperatures offer only marginal gains and increase the risk of material degradation. \n\n\n\nThe findings support the possibility of extending MRS250 classification to a 100+ year design lifetime\, allowing designers of pressurised water supply networks to plan for longer service lives using design stress and design coefficient values typically applied for 50-year designs.
URL:https://vinylpluspipes.eu/event/sappma-webinar/
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