聚酰亚胺/羰基铁粉吸波包装材料性能分析  

Performance Analysis of Polyimide/Carbonyl Iron Absorbent Packaging Material

作　　者：周璐 付志强[1] 吕幼军[1] 张蕾[1] 周传浩 ZHOU Lu;FU Zhi-qiang;LYU You-jun;ZHANG Lei;ZHOU Chuan-hao(College of Light Industry Science and Engineering,Tianjin University of Science and Technology,Tianjin 300222,China)

机构地区：[1]天津科技大学轻工科学与工程学院,天津300222

出　　处：《包装工程》2021年第11期81-86,共6页Packaging Engineering

基　　金：天津市教委科研计划(2019KJ209)。

摘　　要：目的制备聚酰亚胺(PI)/羰基铁粉(CI)复合膜并探究其性能,以改变微波加热过程中的加热方式。方法主要通过红外光谱、扫描电镜、力学性能、透氧透湿和微波转热测试分析其性能。结果聚酰亚胺与羰基铁粉是物理结合;当羰基铁粉质量分数超过25%时,开始发生团聚;当羰基铁粉质量分数为20%时,弹性模量最小;当羰基铁粉质量分数为15%时,透氧透湿系数最低;随着羰基铁粉含量的增加,复合膜在微波加热下升温和常温下降温的速率增加。结论PI/CI复合膜能够吸收部分微波转热能,是一种新型的吸波包装材料,为微波加热用包装材料的设计提供了新思路。In order to change the heating mode in microwave heating process,polyimide(PI)/carbonyl iron powder(CI)composite film was prepared and its properties were investigated.The properties of the composite film were ana-lyzed by infrared spectroscopy,scanning electron microscopy,mechanical properties,oxygen permeability and moisture permeability and microwave heating.The results showed that the addition of carbonyl iron powder to polyimide was physically binding.When the content of carbonyl iron powder exceeds 25%,agglomeration begins to occur.It was found that the elastic modulus was the smallest when the content was 20%.When the content was 15%,the oxygen permeability and moisture permeability coefficient was the lowest.With the increase of carbonyl iron powder content,the rate of heat-ing and cooling of the composite film under microwave heating increased.The conclusion is that PI/CI composite film can absorb microwave energy to heat energy,which is a new type of absorbing packaging material and provides a new idea for packaging material design in microwave heating process.

关 键 词：聚酰亚胺/羰基铁粉 吸波包装材料 力学性能 透氧透湿 能量转化 

分 类 号：TS206.4[轻工技术与工程—食品科学]