改善熔体直纺98 dtex/48 f三角异形有光涤纶FDY毛丝的探讨  

Discussion on reducing broken filaments of 98 dtex/48 f bright triangular profiled polyester FDY prepared by melt direct spinning process

作　　者：谢尚财 吴维光 孙学江 张丽 全佳囡 缪堂伟 XIE Shangcai;WU Weiguang;SUN Xuejiang;ZHANG Li;QUAN Jianan;MIAO Tangwei(Zhejiang Shengyuan Chemical Fiber Co.,Ltd.,Hangzhou 311247)

机构地区：[1]浙江盛元化纤有限公司,浙江杭州311247

出　　处：《合成纤维工业》2023年第5期87-89,93,共4页China Synthetic Fiber Industry

摘　　要：为降低熔体直纺98 dtex/48 f三角异形有光涤纶全拉伸丝(FDY)生产过程中的毛丝数量,对生产工艺进行了优化。结果表明:控制原料PET熔体中端羧基含量在28~30 mol/t,采用过滤精度为1200目的纺丝组件滤网,设计三叶形喷丝孔叶长、弧半径均为0.22 mm,调整纺丝温度为294℃、集束上油位置在1100 mm,可有效降低毛丝数量,且生产稳定;工艺优化后,熔体直纺生产的98 dtex/48 f三角异形有光涤纶FDY的毛丝降等率为3.4%,纤维断裂强度为4.1 c N/dtex,断裂伸长率为45.2%,满足下游客户使用需求。The production process was optimized in order to reduce the number of broken filaments in the production process of 98 dtex/48 f bright triangular profiled polyester fully-drawn yarn(FDY)by melt direct spinning process.The results showed that the number of broken filaments can be effectively reduced under stable production by controlling the carboxyl end group content of 28-30 mol/t in PET melt raw material,using a spinning component of filter screen with a filtration accuracy of 1200 mesh,adopting a trilobal spinneret hole with both leaf length and arc radius of 0.22 mm,adjusting the spinning temperature to 294℃ and setting the collection oiling position to 1100 mm;and the melt direct spun 98 dtex/48 f bright triangular profiled polyester FDY produced had a broken filament downgrade rate of 3.4%,breaking strength of 4.1 cN/dtex and elongation at break of 45.2% after optimization,meeting the needs of downstream customers.

关 键 词：聚对苯二甲酸乙二酯纤维 熔体直纺 全拉伸丝 三叶喷丝孔 毛丝 

分 类 号：TQ342.21[化学工程—化纤工业]