Study on sizing process of kapok/cotton blended yarn.

In order to solve actual problem in kapok fabric production, special characteristics of kapok fiber and cotton fiber were studied for sizing, including water repellent and oil absorption based on carboxaldehyde radicals of kapok fiber. Solution and similitude theory was adapted to select out three sizes such as partially alcoholized PVA 1299, oxidized corn starch and polyacrylic acid. L₉(3⁴)orthogonal experiment method was adapted on three measures involved of solid content, proportion of PVA and core starch, temperature in sizing box. Then three indicators of strength enhancement rate, decrease rate of hairiness and number of abrasive resistance were tested. Finally, change rules from each measure to levels and optimal sizing process were given. The sizing process is as solid content was 9%, ratio of PVA, oxidized corn starch and polyacrylic acid is 1.5: 1: 0.04, best temperature in sizing box is 95°C. [ABSTRACT FROM AUTHOR]