辐照对食品接触材料的物理机械性能的影响  

Effects of irradiation on physical and mechanical properties of food contact materials

作　　者：蔡岱芸 杨婷 曾庆鹏 岳淑丽[2] Cai Daiyun;Yang Ting;Zeng Qingpeng;Yue Shuli(Guangdong Chaozhou Institute of Quality&Metrology Supervision&Inspection,Chaozhou 521011,China;College of Food Science,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]广东省潮州市质量计量监督检测所,潮州521011 [2]华南农业大学食品学院,广州510642

出　　处：《塑料包装》2023年第5期23-27,共5页Plastics Packaging

基　　金：广东省市场监督管理局项目(2021CZ35)。

摘　　要：主要研究了不同剂量的辐照处理(5kgy~50kgy)对食品接触材料PE膜、CPP膜关键物理机械性能的影响。试验结果表明PE膜和CPP膜的拉伸性能均受辐照剂量的增加而下降,其中厚度较小的CPP膜拉伸性能受辐照剂量的影响较为显著,横向拉伸强度及断裂标称应变的下降变化率最大,而CPP膜的雾度和PE膜的落镖冲击性能受辐照剂量影响不显著。The effects of different doses of irradiation(5kgy~50 kgy)on the key physical and mechanical properties of PE and CPP films of food contact materials were studied.The experimental results showed that the tensile properties of both PE and CPP films decreased with the increase of radiation dose,and the tensile properties of CPP films with smaller thickness were significantly affected by radiation dose,and the transverse tensile strength and nominal fracture strain decreased with the greatest change rate,while the fog degree of CPP films and the falling dart impact properties of PE films were not significantly affected by radiation dose.

关 键 词：辐照 PE膜 CPP膜 拉伸强度 断裂标称应变 

分 类 号：TS206.4[轻工技术与工程—食品科学]