聚乙烯树脂中挥发性有机物精准评价方法研究  

Study on accurate evaluation of volatile organic compounds from poly-ethylene resin

作　　者：李根 蒲晨露 Li Gen;Pu Chenlu(Sinopec Ningbo New materials Research Institute Company Limited,Ningbo,315200,China)

机构地区：[1]中石化宁波新材料研究院有限公司,浙江宁波315299

出　　处：《塑料包装》2024年第3期7-11,63,共6页Plastics Packaging

摘　　要：建立了顶空-气相色谱-质谱联用技术测定聚乙烯(PE)树脂中挥发性有机物(VOCs)定性定量的分析方法,对色谱柱种类、顶空平衡时间、顶空平衡温度、样品质量进行优化。实验结果表明,选择非极性柱、顶空平衡温度120℃、顶空平衡时间60min及PE树脂1g可较好满足评价方法要求;PE树脂中高含量的挥发性物质是C8~C14的烷烃及少量烯烃,利用标准曲线测定三种聚乙烯粒料中挥发性烃类含量为1.55、12.25、10.12 g/g。This paper focused on evaluating the volatile organic compounds(VOCs)both qualitatively and quantitatively from poly-ethylene qualitatively with Headspace-Gas chromatography-Mass spectrum(HS-GC-MS).The type of column,balance time of HS,heating temperature and amount of sample is further studied and optimized for getting reliable data.It is found that heating 1 gram of poly-ethylene under 120℃for 60 minutes and further separating and analyzing using non-polar column could meet the requirement.Furthermore,the main components of VOCs from poly-ethylene are alkane with 8 to 14 carbon atoms,while minor alkene could still be found.The total amount of volatile organic compounds(TVOC)of sample studied in this paper varied between 1.55 to 12.55 g/g characterizing with standard working curve method.

关 键 词：顶空-气相色谱-质谱联用技术 聚乙烯 挥发性有机化合物 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]