熔体直纺278 dtex/288 f抗菌涤纶POY生产工艺探讨  

Discussion on production process of 278 dtex/288 f antibacterial polyester POY by direct melt spinning process

作　　者：兰金良 潘子刚 潘国华 刘亚盟 陈郭兰 LAN Jinliang;PAN Zigang;PAN Guohua;LIU Yameng;CHEN Guolan(Jiangsu Tongkun Hengxin New Materials Co.,Ltd.,Suqian 223800)

机构地区：[1]江苏桐昆恒欣新材料有限公司,江苏宿迁223800

出　　处：《合成纤维工业》2024年第5期95-99,共5页China Synthetic Fiber Industry

摘　　要：以特性黏数0.64 dL/g的聚对苯二甲酸乙二醇酯熔体为原料,添加特性黏数0.63 dL/g的抗菌母粒质量分数2.2%,采用熔体直纺及母粒在线添加技术生产278 dtex/288 f抗菌涤纶预取向丝(POY),探讨了母粒干燥工艺及纺丝工艺条件。结果表明:控制干燥塔温度120℃、干燥时间10 h,干燥后抗菌母粒含水率在70μg/g以下,满足纺丝要求;较佳纺丝工艺条件为组件初始压力约15 MPa,无风区高度50 mm,环吹风温度21℃、相对湿度80%~90%、压力18 Pa,丝束集束上油位置900 mm,纺丝速度2650 m/min;在较佳工艺条件下,生产稳定,产品优等率达97%以上,生产的抗菌涤纶POY断裂强度为2.30 cN/dtex,条干不匀率小于1.12%,对金黄色葡萄球菌、大肠杆菌的抑菌率分别为97%、84%。Using polyethylene terephthalate melt with an intrinsic viscosity of 0.64 dL/g as raw material and adding 2.2%antibacterial masterbatch by mass fraction with an intrinsic viscosity of 0.63 dL/g,278 dtex/288 f antibacterial polyester pre-oriented yarn(POY)was produced using direct melt spinning and online masterbatch addition technology.The masterbatch drying process and spinning process conditions were explored.The results showed that the moisture content of the antibacterial masterbatch was below 70μg/g after drying for 10 h at a drying tower temperature of 120℃,which met the spinning requirements;and the spinning and production were stable,the top-quality product rate was above 97%,and the antibacterial polyester POY produced had a breaking strength of 2.30 cN/dtex,yarn unevenness below 1.12%and antibacterial rates against Staphylococcus aureus and Escherichia coli up to 97%and 84%,respectively,when the spinning process conditions were optimized as followed:an initial pressure of about 15 MPa for spin pack,calm zone height of 50 mm,circular air blow temperature of 21℃,relative humidity of 80%-90%,pressure of 18 Pa,collection and oil position of 900 mm and spinning speed of 2650 m/min.

关 键 词：聚对苯二甲酸乙二酯纤维 预取向丝 抗菌母粒 熔体直纺 在线添加技术 

分 类 号：TQ342.21[化学工程—化纤工业]