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1蒸煮处理对覆膜铁用BOPET薄膜阻隔性能的影响显示文摘覆膜铁作为食品用罐包装用材,使用过程中需经高温蒸煮处理,为研究此过程对于覆膜铁用双向拉伸聚酯(BOPET)薄膜阻隔性能的影响,对经不同蒸煮时间处理的BOPET薄膜的水蒸气透过率、热效应、微观结构进行了探讨分析。研究结果表明,蒸煮处理有利于降低BOPET薄膜的水蒸气透过率;随着蒸煮处理时间的延长,薄膜的熔点和熔融热有一定程度的增加;同时蒸煮处理可以调整薄膜的微观结构,增加晶核数量的同时使结晶更致密,形成网络状结构有利于提升薄膜的阻隔性能。王章薇 2017宝钢技术2017,10,3:1
2Effect of sterilization on barrier property of BOPET used in film-laminated steel显示文摘High-temperature sterilization is applied when film-laminated steel is used as food-can packaging material. To study the effect of this sterilization on the barrier property of biaxially oriented polyester(BOPET)film, the water vapor transmission, thermal properties, and microstructure of BOPET that had undergone different sterilization time were analyzed. Results show that water vapor transmission is decreased by sterilization, and that with increased sterilization treatment time, the melting point and melting enthalpy of BOPET increases. Moreover,the microstructure of BOPET film also can be improved by sterilization, in which the quantity of crystal nuclei and the crystallization density increase to form a network-like structure,which is beneficial to the barrier property of BOPET film.WANG Zhangwei XIE Long CHEN Hongxing 2017Baosteel Technical Research2017,11,2:0
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