甲苯-甲基丙烯酸甲酯-丙烯酸甲酯混合液的核磁共振氢谱分析  

NMR analysis on toluene methyl methacrylate methyl acrylate mixture

作　　者：王博[1] 于雪[1] 王旭[1] 于海波[1] 马春香[1] WANG Bo;YU Xue;WANG Xu;YU Haibo;MA Chunxiang(Research Institute of Petro-China,Jilin Petrochemical Company,Jilin 132021,China)

机构地区：[1]中国石油吉林石化公司研究院,吉林吉林132021

出　　处：《弹性体》2023年第6期66-73,共8页China Elastomerics

摘　　要：在聚甲基丙烯酸甲酯生产过程中,需对回收的溶剂甲苯、未参与聚合的单体甲基丙烯酸甲酯以及丙烯酸甲酯组成的混合液进行准确的定量分析,以期及时调整生产工艺,对原材料进行充分再利用。利用核磁共振氢谱技术对不同配比的混合液样品谱峰归属进行了分析,根据积分面积值提出了两种快速简便地计算实际混合液组分含量的核磁共振氢谱计算方法,通过建立工作曲线,确立了最终的组分质量分数计算方法,并讨论了方法的准确度和精密度。In the production process of polymethyl methacrylate,in order to timely adjust the production process and fully reuse the raw materials,it is necessary to accurately and quantitatively analyze the mixture composed of recovered solvent toluene,monomer methyl methacrylate not involved in polymerization and methyl acrylate.In this paper,the attribution of spectral peaks of mixed liquid samples with different ratios is analyzed by nuclear magnetic resonance hydrogen spectroscopy technology.According to the integral area value,two nuclear magnetic resonance hydrogen spectroscopy calculation methods for quickly and simply calculating the component content of actual mixed liquid are proposed.By establishing the working curve,the final component mass fraction calculation method is established,and the accuracy and precision of the method are discussed.

关 键 词：甲苯 甲基丙烯酸甲酯 丙烯酸甲酯 混合液 核磁共振氢谱 定量分析 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]