The present paper presents an analysis of the thermal aging process a polyamide 66 at two different temperatures: −6 °C and 60 °C, throughout time span 9000 h. proposes unified expression to estimate mechanical behavior in tensile tests stages. goal is algebraic equation able describe stress–strain curves that would be obtained using ASTM D638-14 standard for wide range times, without actual ne...

Abstract In this article, the consistent pattern of mass transfer in process drying granular polyethylene terephthalate (PET), polycaproamide (PCA), and polyamide 66 (PA 66) were studied. A modified quasi-stationary method was used to analyze data. The characteristic time hydrodynamic intensity index obtained based on experimental Some features water sorption desorption by fiber-forming polymers