【摘要】 在尼龙 66工业丝生产中 ,采取降低后聚合器至纺丝箱之间管道温度 ,降低纺丝箱温度 ,调整尼龙 66盐液 p H值来提高聚合熔体粘度 ,采取改变侧吹风冷风条件 ,增加喷丝板孔数 ,采用盘式熔体过滤器、添加助剂等方法提高大分子线性整列度 ,使帘子线断裂强度达 88.3 c N/tex以上 ,达到日本 T5丝的水平。更多还原

【Abstract】 The polymer melt viscosity during nylon66 industrial yarn production can be increased by decreasing the channel temperature from the afterpolymerization reactor to spin beam and spin beam temperature and selecting an appropriate pH value of nylon66 saline solution. By changing quenching conditions, increasing spinneret hole, employing disc melt filter and adding additives, the macromolecular linear regularity can be improved to such an extent that the breaking strength of tire cord increases to over 88 3 cN/tex, reaching the quality level of T5 yarn made in Japan.更多还原