2000 dtex/312 f尼龙66高强力丝生产工艺探讨

Discussion on production process of 2000 dtex/312 f high-strength nylon 66 yarn

探讨了在常规尼龙 66工业丝生产装置上 ,生产 2 0 0 0dtex/3 12f尼龙 66高强力工业丝的工艺条件 ,生产中控制尼龙 66盐液pH 7.80～ 7.95 ,生产的聚合物相对粘度在 75～ 78,选择拉伸倍数 5 .67～ 5 .70 ,卷绕速度 2 2 0 0m/min以下 ,并优选其他工艺条件 ,产品强度可达到 8.83cN/dtex。

The production process of 2 000 dtex/ 312 f high-strength nylon 66 yarn was discussed on a normal nylon 66 industrial yarn plant. The pH value of nylon 66 saline solution was 7.80～7.95, and the relative viscosity of the polymer in the range of 75～78. The strength of 8.83 cN/dtex can be produced under draw ratio 5.67～5.70, winding speed below 2 200 m/min and other optimized conditions.