Food packaging simulant failure mechanisms in next generation steel packaging
Food packaging simulant failure mechanisms in next generation steel packaging
复制标题
DOI：
10.1002/pts.2448
复制
发表时间：
2019-06
影响因子：
2.6
通讯作者：
A. Allman;E. Jewell;A. Vooys;R. Hayes;H. Neil McMurray
中科院分区：
文献类型：
--
作者：
A. Allman;E. Jewell;A. Vooys;R. Hayes;H. Neil McMurray
在欧洲，立法压力已导致镀铬钢（ECCS）基材和环氧酚醛漆的替代品成熟。进行了一项调查，以检查钢表面工程与一种新的，开发基板涂有铬（III）基电解质和食品罐头之间的相互作用。涂漆材料的样品经过典型的蒸馏过程（121°C，90分钟），并使用各种实验室分析技术进行检查。被包装的食品对基材/漆的附着力有显著影响，食品之间的失效机制存在明显差异。有明确的证据表明，化学物质通过下一代漆转移，这可能会在表面引发腐蚀，不完整的铬覆盖导致铁暴露。一般来说，新型开发材料表现出较低的粘附性，并对食品表现出更大的敏感性，尽管这在很大程度上归因于覆盖的均匀性。由于REACH法规，新型基板被证明是ECCS的有前途的替代品，但需要改进以实现等效性能。
Legislative pressures have led to the mature dominant chromium‐coated steel (ECCS) substrate and epoxy phenolic lacquer replacement in Europe. An investigation was carried out to examine the interaction between a steel surface engineered with a novel, developmental substrate coated using Cr (III)‐based electrolytes and the food stuff being canned. Samples of lacquered material were subjected to a typical retort process (121°C for 90 minutes) and examined using a variety of laboratory analytical techniques. The foodstuff being packaged has a significant impact on the substrate/lacquer adhesion with clear differences in failure mechanisms between foodstuffs. There is clear evidence of chemical species transfer through the next generation lacquer, and this can instigate corrosion at the surface where incomplete chromium coverage leads to exposed iron. In general, the novel developmental material exhibits lower adhesive properties and shows a greater sensitivity to the foodstuff, although this is largely attributed to the homogeneity of the coverage. The novel substrate proves to be a promising alternative to ECCS due to REACH legislation, but improvement is required to achieve equivalent performance.