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Optimising performance of modified poly(vinyl chloride) for pressure pipe applications
Modified poly(vinyl chloride) pipes are being introduced for water reticulation, for which their tough, predictable behaviour offers advantages in both performance and material utilisation. Chlorinated polyethylene (CPE) is one of the modifiers used, either alone or in combination with other additives. The effects of changes in processing conditions on both the phase morphology of the CPE and the physical properties of modified poly(vinyl chloride) pipe have been investigated. The processing conditions were altered by varying barrel zone temperatures and screw speed. It was found that optimum pipe properties were achieved after the CPE developed a particulate phase morphology. The comparatively high J0.2 value for the sample processed under the most benign conditions did not reflect its performance in the impact test or pressure tests. Further work is required to relate these results to the gelation levels of the samples.
Optimising performance of modified poly(vinyl chloride) for pressure pipe applications
Modified poly(vinyl chloride) pipes are being introduced for water reticulation, for which their tough, predictable behaviour offers advantages in both performance and material utilisation. Chlorinated polyethylene (CPE) is one of the modifiers used, either alone or in combination with other additives. The effects of changes in processing conditions on both the phase morphology of the CPE and the physical properties of modified poly(vinyl chloride) pipe have been investigated. The processing conditions were altered by varying barrel zone temperatures and screw speed. It was found that optimum pipe properties were achieved after the CPE developed a particulate phase morphology. The comparatively high J0.2 value for the sample processed under the most benign conditions did not reflect its performance in the impact test or pressure tests. Further work is required to relate these results to the gelation levels of the samples.
Optimising performance of modified poly(vinyl chloride) for pressure pipe applications
Leistungsoptimierung von modifiziertem Polyvinylchlorid für Druckrohranwendungen
Whittle, A.J. (author) / Burford, R.P. (author)
1998
5 Seiten, 9 Bilder, 16 Quellen
Conference paper
English
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