Italo Martins Gomes, Antônio Henrique Monteiro, Erica Gervasoni Chaves, Sylvia Correa dos Santos Teixeira, Nara Guidacci Berry, Lan de Gans-Li, Flávio Venancio Loureiro Dias, Marcelo José Gomes da Silva
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Integrity analysis of polyamide 12 applied in oil pipelines
This work aims to study the use of polyamide 12 in oil pipelines to replace steel, which is more susceptible to corrosion. Pipes of polyamide were installed in oil fields and, after 1 year of operation, were removed and analyzes. The outer layers of all field samples and the unaged sample did not show, in the DSC, any primary peak close to the melting peak. This is due to the extrusion and the formation of different crystalline structures on the inner surface, giving rise to two melting peaks. All layers of the field samples showed endothermic peaks, but the unaged sample did not. This can be attributed to the annealing process, but this phenomenon does not affect the properties PA12. The results showed no degradation and PA12 can be a viable alternative for oil pipelines, providing savings of more than 50% compared to steel, in addition to operational, human and environmental safety.
期刊介绍：
Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews.
The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.
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