聚乙二醇柠檬酸酯平滑剂合成及其复配油剂性能  

Synthesis of polyethylene glycol citrate ester smoothing agent and performance of compound formulation design for spinning oil agents

作　　者：陈世昌[1,2] 杨冬冬 陈文兴 CHEN Shichang;YANG Dongdong;CHEN Wenxing(College of Materials Science and Engineering,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Modern Textile Technology Innovation Center,Shaoxing,Zhejiang 312000,China)

机构地区：[1]浙江理工大学材料科学与工程学院,浙江杭州310018 [2]浙江省现代纺织技术创新中心,浙江绍兴312000

出　　处：《纺织学报》2024年第11期128-135,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52173047);浙江省基础公益研究计划项目(LGG21E030014)。

摘　　要：针对涤纶工业丝油剂耐热性差、高温平滑性不佳等难题,采用聚乙二醇和柠檬酸为单体合成酯类平滑剂,优化了平滑剂合成工艺,复配聚醚类乳化剂、有机钾盐类抗静电剂及其它副组分,制备了耐热型纺丝油剂,并对油剂的平滑性能、界面性能、抗静电性能和热稳定性进行了表征。结果表明:在柠檬酸与聚乙二醇的量比为1∶2、催化剂质量分数为0.02%、170℃下反应1.5 h的条件下制得聚乙二醇柠檬酸酯,酯化率达到97%,酸值、羟值和皂化值分别为0.62、8、182 mgKOH/g,高温黏度和耐热性能均超过市售常用平滑剂;以聚乙二醇柠檬酸酯为平滑剂复配得到的油剂其表面张力为31.05 mN/m,接触角为11.2°,磨斑直径为0.538 mm,摩擦因数为0.043,电导率达到6.13μS/cm;耐热性能最优的油剂在140℃和250℃下挥发2 h的损失率分别为1.4%和12%。该耐热型纺丝油剂在抗静电和热稳定性等方面均优于进口油剂。Objective Chemical fibers need to undergo high-temperature thermal drawing and treating during post-processing,which can easily cause scattering and breakage.Oil agents can adjust friction characteristics and give fibers high-temperature smoothness during spinning processing to run smoothly and steadily for the fiber production.However,with domestically produced oil agents used at high temperatures,abnormal phenomenon such as serious coking of hot rollers and tangled(remnant)fibers would still occur.As a result,the spinning oil agents for PET industrial fibers in domestic large-scale production are independent of imports.Method In view of the problems of poor heat resistance and poor high-temperature smoothness of domestic chemical fiber oils,compound design of oil components was carried out on the basis of successful synthesis of excellent smoothing agents,which was prepared from polyethylene glycol and citric acid as monomers.The smoothing agent synthesis conditions was optimized,then a heat-resistant spinning oil could be achieved with the presence of self-prepared smoothing agent,selected polyether emulsifiers and other components.The chemical structure,thermal properties and viscosity of the smoothing agent,and the smoothness,interface properties,antistatic properties and thermal stability of the oil agent were also characterized and compared with the current products.Results The optimized conditions for the synthesis of polyethylene glycol citrate as smoothing agent are considered as:the acid-to-alcohol molar ratio of 1∶2,0.02%of catalyst,the temperature of 170℃with reaction time of 1.5 h in N 2 atmosphere,and the esterification rate reaches 97%.The acid value,hydroxyl value and saponification value of the synthetic smoothing agent are 0.62 mgKOH/g,8 mgKOH/g and 182 mgKOH/g,respectively.The high temperature viscosity and heat resistance are higher than that of common smoothing agents.The vital performance parameters of the well-designed oil agent are excellent,as the surface tension is 31.05 mN/m,the we

关 键 词：聚乙二醇柠檬酸酯 纺丝油剂 平滑剂 耐热性 涤纶工业丝 化纤工业 

分 类 号：TQ340.47[化学工程—化纤工业]