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美耐皿餐具中残余三聚氰胺单体向食品中的迁移行为越来越受到社会关注。合成了三聚氰胺甲醛树脂,并与不同浓度的纤维素混合,配制成的模塑料,在不同工艺条件下模压成美耐皿制件,研究了纤维素含量、模压温度、模压时间、浸泡介质和浸泡时间对美耐皿制件中残余三聚氰胺单体向介质迁移行为的影响,观察了浸泡前、后制件的表面形貌变化。结果表明,美耐皿制件中残余三聚氰胺单体向乙酸稀溶液中的迁移量最大,众多因素中纤维素含量对残余单体迁移量的影响最为显著,在浸泡300 h后达到迁移平衡,乙酸稀溶液对美耐皿制件表面存在溶解性腐蚀。
Melamine containers cutlery residual melamine monomer migration to food more and more by the community attention. The melamine formaldehyde resin was synthesized and mixed with different concentration of cellulose to prepare the molding compound. The melamine formaldehyde resin was molded under different process conditions to make melamine resistant parts. The effects of cellulose content, molding temperature, molding time, immersion medium and immersion time The influence of melamine residual monomer migration to melamine in MEI parts was observed. The surface topography of the parts before and after immersion was observed. The results showed that the migration of residual melamine monomer to acetic acid dilute solution was the largest in the melamine tablets. Among the factors, cellulose content had the most significant influence on the residual monomer migration. After 300 h soaking, the migration equilibrium was reached. Acetic acid Dilute solution on the surface of the workpiece melamine resistant dissolution.