瓶级聚酯切片生产中的黏度控制  

Viscosity control in the production of bottle-grade PET chips

作　　者：王凯 陈锦国 李红华 曹睿 杨东升 WANG Kai;CHEN Jin-guo;LI Hong-hua;CAO Rui;YANG Dong-sheng(Yizheng Chemical fiber L.L.C.Yizheng 211900,China)

机构地区：[1]中国石化仪征化纤有限责任公司分析检验中心,江苏仪征211900

出　　处：《聚酯工业》2022年第3期47-50,54,共5页Polyester Industry

摘　　要：论述了瓶级聚酯切片生产过程中,通过控制基础切片黏度、端羧基含量、切片外观尺寸等指标,调整固相缩聚(SSP)的反应温度、停留时间、氮气流量以及循环氮气中的碳氢含量等参数,控制瓶片黏度的方法。This article provides a detailed overview of the methods for controlling product viscosity during the production of bottle-grade PET chips from the following aspects:controlling viscosity,end carboxyl group content,chips appearance size and other indicators of basic chips and adjust parameters such as reaction temperature,residence time and nitrogen flow rate in the solid state polycondensation(SSP)and hydrocarbon content in circulating nitrogen.

关 键 词：黏度控制 基础切片 瓶级聚酯切片 固相缩聚(SSP) 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]