Modified polyamide curing agent of high-toughness epoxy system for pavement paving

The invention discloses a modified polyamide curing agent of a high-toughness epoxy system for pavement paving, and belongs to the technical field of pavement bonding materials. The composition comprises the following components in parts by weight: 20-40 parts of polyamine; 15 to 30 parts of a multifunctional epoxy reactive diluent; 20 to 30 parts of long-chain single acid; 15 to 45 parts of dimer acid; and 2 to 5 parts of DMP-30. The prepared curing agent has a tree-shaped structure and has the characteristics of amido amine and polyamide; after being mixed with epoxy resin E51 according to a certain proportion, the epoxy resin is particularly suitable for paving concrete pavements and steel bridge decks, and has good bonding performance with foundations. 本发明公开了一种路面铺装用高韧性环氧体系的改性聚酰胺固化剂，属于路面粘接材料技术领域；包含以下重量组分：多元胺20~40份；多官能环氧活性稀释剂15~30份；长链单酸20~30份；二聚酸15~45份；DMP-30 2~5份。本发明做出的固化剂有树状结构，兼具酰胺基胺与聚酰胺的特性；与环氧树脂E51按一定比例混合后，特别适合用于混凝土路面及钢桥面铺装，与基础具有良好的粘接性能。