A phenyl 2-naphthylamine antioxidant was synthesized via Michael addition and amidation reactions with parabromoaniline,lauryl amine and 2-naphthylamine as raw materials,and its chemical structure was confirmed by 1 H- and 13 C-NMR spectroscopy and liquid chromatography-mass spectrometry. Thermal analysis results indicated that this phenyl 2-naphthylamine antioxidant had a high thermal stability.The oxidation induction time for a polyethylene compound containing the phenyl 2-naphthylamine antioxidant was 1 5 7 .5 3 min and the carbonyl index was 0 .2 5 ,suggesting that the phenyl 2-naphthylamine antioxidant had an excellent stabilizing efficiency.%以对溴苯胺、十二胺和2萘胺为原料，通过迈克尔加成和酰胺化缩合反应合成了一种苯基2萘胺抗氧剂，并将其应用于高密度聚乙烯（PE-HD）中。利用核磁共振氢谱、核磁共振碳谱和液相色谱质谱法、差示扫描量热法和热失重法对所合成的抗氧剂进行了分析表征。结果表明，合成的苯基2萘胺抗氧剂与设计的分子结构一致，且产品纯度较高；该抗氧剂具有较好的热稳定性，其氧化诱导期为157．53 min，老化70 h后其羰基指数仅为0．25。
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