不同老化方式对PVC膜中氯乙烯、偏二氯乙烯及环氧氯丙烷含量影响的研究  

Study on Effect of Different Aging Methods on Contents of Vinyl Chloride,Vinylidene Chloride and Epichlorohydrin in PVC Film

作　　者：余婧 陈华 YU Jing;CHEN Hua(Hunan Provincial Key Laboratory of Food Safety Monitoring and Early Warning,Hunan Provincial Institute of Commodity and Product Quality Inspection,Changsha Hunan 410017,China)

机构地区：[1]湖南省产商品质量检验研究院,食品安全监测与预警湖南省重点实验室,湖南长沙410017

出　　处：《辽宁化工》2024年第5期675-677,681,共4页Liaoning Chemical Industry

基　　金：湖南省市场监督管理局科技计项目(项目编号:2021KJJH05);湖南省市场监督管理局科技计项目(项目编号:2021KJJH78);湖南省科市联合基金项目(项目编号:2022JJ90007)。

摘　　要：老化是影响食品接触材料使用质量的重要原因。设置了不同的老化条件以考察其对PVC膜中氯乙烯、偏二氯乙烯和环氧氯丙烷含量变化的影响。结果表明,人工热氧老化方法在一定程度上促进了PVC薄膜中氯乙烯、偏二氯乙烯及环氧氯丙烷的迁移,经热水处理和微波辐射后的PVC薄膜中的氯乙烯、偏二氯乙烯、环氧氯丙烷的析出含量与老化前的氯乙烯、偏二氯乙烯、环氧氯丙烷含量未有明显变化。实验结果可为合理、安全使用PVC薄膜提供技术参考。Aging is an important factor affecting the quality of food contact materials.In this paper,different aging conditions were set up to investigate the effects of aging condition changes on the contents of vinyl chloride,vinylidene chloride and epichlorohydrin in PVC films.The results showed that the artificial thermal oxygen aging method promoted the migration of vinyl chloride,vinylidene chloride and epichlorohydrin in PVC films to a certain extent.The precipitation contents of vinyl chloride,vinylidene chloride and epichlorohydrin in PVC films after hot water treatment and microwave radiation have no obvious change compared with those of vinyl chloride,vinylidene chloride and epichlorohydrin before aging.The experimental results can provide technical reference for reasonable and safe use of PVC film.

关 键 词：老化 迁移 氯乙烯 偏二氯乙烯 环氧氯丙烷 

分 类 号：TQ325[化学工程—合成树脂塑料工业]