聚萘二甲酸乙二醇酯产业链发展现状及趋势  

Development status and trend of industry chain of polyethylene naphthalate

作　　者：王铁成 张健 陈颖 张鑫 闫虹 WANG Tiecheng;ZHANG Jian;CHEN Ying;ZHANG Xin;YAN Hong(Polyester Operation Department of PetroChina Liaoyang Petrochemical Company,Liaoyang 11100;Research Institute of PetroChina Liaoyang Petrochemical Company,Liaoyang 11100)

机构地区：[1]中国石油辽阳石化分公司聚酯运行部,辽宁辽阳11100 [2]中国石油辽阳石化分公司研究院,辽宁辽阳11100

出　　处：《合成纤维工业》2023年第5期73-77,共5页China Synthetic Fiber Industry

摘　　要：综述了聚萘二甲酸乙二醇酯(PEN)原料2,6-二甲基萘(2,6-DMN)、2,6-萘二甲酸(2,6-NDA)、2,6-萘二甲酸二甲酯(2,6-NDC)和PEN的合成技术,以及PEN应用现状。2,6-DMN的主要合成方法是化学合成法,但存在成本过高等问题。2,6-NDA的主要合成方法是2,6-DMN氧化法,但产品杂质较多,需通过复杂的工艺进行提纯。2,6-NDC的合成方法主要包括邻二甲苯法、β-甲基萘氧化法和2,6-二异丙基萘氧化法,目前均已实现工业化生产,但生产成本较高。PEN合成技术包括直接酯化法和酯交换法,酯交换法是目前PEN工业化生产的唯一方法。PEN主要应用在特种薄膜、高端中空容器、高性能纤维及共聚改性材料等领域。我国PEN产业链的发展亟待突破2,6-DMN单体分离和提纯的瓶颈,降低原料成本,实现产业化生产。The synthesis technology and application status of polyethylene naphthalate(PEN)and its raw materials involving 2,6-dimethylnaphthalene(2,6-DMN),2,6-naphthalene dicarboxylic acid(2,6-NDA)and 2,6-dimethylnaphthalene dicarboxylate(2,6-NDC)was summarized.The synthesis technology of 2,6-DMN is mainly chemical synthesis method,which has the problems like high production cost.The synthesis technology of 2,6-NDA is mainly 2,6-DMN oxidation method,but the product has many impurities and needs to be purified through complex processes.The synthesis technology of 2,6-NDC mainly includes o-xylene method,β-methylnaphthalene oxidation method and 2,6-diisopropylnaphthalene oxidation method,which have all been applied in the industrial production but with high production costs.The synthesis technology of PEN includes direct esterification method and ester exchange method,and ester exchange method is currently the only method to achieve the industrial production of PEN.PEN is mainly used in the fields of special films,high-end hollow containers,high-performance fibers and copolymer modified materials.The development of China's PEN industry chain needs to break through the bottleneck of 2,6-DMN monomer separation and purification and reduce the cost of raw materials so as to realize the industrial production.

关 键 词：聚萘二甲酸乙二醇酯 产业链 合成技术 应用 

分 类 号：TQ342.2[化学工程—化纤工业]