双氧水浸泡对覆膜铁薄膜特性黏度及结晶度的影响

摘要

采用自动黏度测定仪和红外光谱分析研究了覆膜、双氧水浸泡及蒸煮过程对覆膜铁薄膜黏度和结晶度的影响。结果表明：覆膜及蒸煮过程会使PET薄膜的特性黏度和结晶度下降，双氧水浸泡可使PET薄膜的特性黏度和结晶度升高；高温及水分子存在会使PET降解，从而使其特性黏度降低，同时结晶度下降；双氧水会使PET薄膜聚合度增加，从而使其特性黏度和结晶度升高。%The influencing factors in the process of laminating, hydrogen peroxide solution soaking and cooking stripping on intrinsic viscosity and crystallinity of PET film based on polymer laminate steel are systematically studied by automatic viscosity tester and IR. The result indicates that the intrinsic viscosity and crystallinity of PET film decrease through laminating and cooking stripping process while they increase through hydrogen peroxide solution soaking process. PET is degraded under high temperature or in the presence of water molecules with the result of the decrease in intrinsic viscosity and crystallinity. The degree of polymerization of PET film is increased by hydrogen peroxide with the improve-ment of the intrinsic viscosity and crystallinity.