January 1, 2025Advances in Polymer Technology0 citationsOpen Access

Effect of Draw Temperature on the Structure and Mechanical Properties of Aerogel‐Modified Polyamide 6 Draw Textured Yarns

Key Points

Tensile strength increased significantly at the optimal draw temperature of 148°C, with properties improving at this temperature.
Mechanical properties were observed with key changes in structure, like enhanced crystallinity and hydrogen-bonded groups content.
Aerogel-modified polyamide 6 draw textured yarns were processed through melt spinning and drawing methods for optimal results.
These findings suggest implications for optimizing the false twist texturing process in yarn manufacturing.

Abstract

Aerogel‐modified polyamide 6 draw textured yarns (AE/PA6 DTYs) were prepared through melt spinning and subsequent drawing processes. The influence of draw temperature on the structural characteristics and mechanical properties of AE/PA6 DTYs were thoroughly investigated. The results demonstrated that the drawing process significantly improved the molecular the orientation and crystallinity of AE/PA6 DTYs. When the draw temperature was set at 148°C, the AE/PA6 DTY exhibited a higher content of hydrogen‐bonded groups, an increased proportion of the α‐form crystals, and enhanced crystallinity. These structural features contributed to superior tensile strength and crimp performance compared to samples processed at draw temperatures ranging from 143 to 173°C. Additionally, at this optimal draw temperature, the crimp contraction and crimp stability reached 51.62% and 66.69%, respectively, with a tensile strength of 4.36 cN/dtex. These findings provide meaningful insights and practical references for the optimization of the false twist texturing process for AE/PA6 DTYs.

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