Structural Changes in the Fabrication and Ageing of PA66 Textured Yarn

Abstract

Summary: The characterization of textured yarn is of great significance for both producers and final users. The influence of the texturing parameters (draw ratio and heater temperature) on the characteristics of the textured polyamide yarn has been investigated in this study. Textured yarn was characterized by the degree of orientation, degree of crystallinity, breaking characteristics, shrinkage, elasticity characteristics, the contents of the end groups and degree of whiteness. It was observed that the mentioned characteristics changed as a function of time. The influence of yarn ageing on its characteristics was assessed. The parameters of polyamide textured yarn structure were determined by DSC.Reflectance curve changes after ageing of PA 66 yarn.imageReflectance curve changes after ageing of PA 66 yarn.

The effect of aging and first heater temperature on the physical properties of polybutylene terephthalate textured yarn

“…Over time, the shrinkage was decreased and the maximum changes were about 4%, and the reduction was not important for applications. Popovic studies showed that there was no change in the shrinkage of nylon 66 after 12 months of maintenance, indicating that the yarn structure was stable after texturizing.…”

“…Popovic study [13] showed that the tenacity and breaking elongation of the textured nylon yarn of 66 even after 12 months of maintenance were in the allowed range. Abbasi [5] implied that the tensile properties of nylon 6 were relatively constant.…”

“…Over time, the shrinkage was decreased and the maximum changes were about 4%, and the reduction was not important for applications. Popovic studies [13] showed that there was no change in the shrinkage of nylon 66 after 12 months of maintenance, indicating that the yarn structure was sta- Creating a deformation in the false twist texturing results in secondary bonds to be in an unstable state. The stabilization is in fact the sustainability of secondary bonds in a new position.…”

“…Studies have also been performed to determine the effect of aging on the physical properties of various fibers, including PET, PP, and PA6 and PA66 textured yarns . Aging is an important issue that can be accompanied by decrease and sometimes an increase in physical and chemical properties.…”

“…[10] Studies have also been performed to determine the effect of aging on the physical properties of various fibers, including PET, PP, and PA6 and PA66 textured yarns. [5,[11][12][13] Aging is an important issue that can be accompanied by decrease and sometimes an increase in physical and chemical properties. Some examples of changing properties over aging in textiles are the change of physical properties, color-ability, dimensions, substrate, inflation, weight, and so on.…”