Study on One Step Melt Direct Spinning Process of High Tenacity Nylon 66 Industry Yarn |
Received:June 20, 2018 Revised:June 20, 2018 |
DOI:10.12136/j.issn.1000-890X.2019.03.0221 |
Key Words: nylon 66 industry yarn;high tenacity;melt direct spinning process;one step continuous polymerization;high viscosity polymer |
Author Name | Affiliation | E-mail | XIE Qiaoli* | Shenma Industrial Co. ,Ltd | xieqiaoli7879@163.com | XUE Shan | Shenma Industrial Co. ,Ltd | |
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Abstract: |
The one step melt spinning process of high tenacity nylon 66 industry yarn was investigated. The relative viscosity of the nylon 66 polymer increased to 83~85 by stepwise upgrading of the polymerization section. The spinning process parameters optimized were as follows:spinning box temperature (300±1) ℃,quenching air temperature 15 ℃,quenching air speed 0.9~1.1 m·s-1,oil loading rate (1.6±0.2)%,draw temperature 190~195 ℃,and draw ratio 5.85~5.95. The tenacity of nylon 66 industry yarn reached 91.93 cN·tex-1. |
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