Abstract:

To resolve the problems of pure kapok yarn such as low strength，much hairiness, poor wear resistance and difficult to weave, sizing experiments of 27.8 tex pure kapok yarns was carried out in order to improve yarn performance and meet the requirements of weaving. According to the characteristics of kapok yarns, a mixed size composed of acidic modified starch and PVA was selected to size kapok yarns, and sizing conditions were varied as a function of solid content and size proportions with a view to investigate the strength enhancement, elongation, and hairiness reduction of the sized yarns. The results showed that low solid content helps size penetration and facilitates yarn strength and elongation improvement. Within certain scope increasing the content of PVA increases the performance indexes of the sized yarns, and adding a small amount of PVA0588 benefits the improvement of the quality of the sized yarns.