本发明公开一种聚酰胺‑胺型水性木质素基环氧防腐涂料及其制备方法。所述聚酰胺‑胺型水性木质素基环氧防腐涂料，由以下质量份数的原料组成：聚酰胺‑胺型水性木质素基环氧乳液80~120份、水性封闭型异氰酸酯交联剂10~20份、二月桂酸二丁基锡0 .08~0 .2份、水性颜填料浆60~100份、消泡剂0 .2~0 .6份、流平剂0 .1~0 .6份、防闪锈剂0 .2~0 .6份及去离子水0~10份。本发明制得的聚酰胺‑胺型水性木质素基环氧防腐涂料，对基体树脂及固化剂进行了较为全面的分子结构改性，涂层的交联结构发生明显变化，制得的涂层交联密度大大增强，可耐250℃高温，同时耐强酸或耐强碱性能优异。

The present invention discloses a polyamide amine water-based lignin based epoxy anti-corrosion coating and a preparation method thereof. The polyamide amine waterborne lignin based epoxy anticorrosive coating is composed of the following raw materials by weight: 80~120 parts of polyamide amine waterborne lignin based epoxy lotion, 10~20 parts of water-borne blocked isocyanate crosslinker, 0.08~0.2 parts of dibutyltin dilaurate, 60~100 parts of water-borne pigment and filler paste, 0.2~0.6 parts of defoamer, 0.1~0.6 parts of leveling agent, 0.2~0.6 parts of anti flash rust agent and 0~10 parts of deionized water. The polyamide amine water-based lignin based epoxy anti-corrosion coating prepared by the present invention has undergone comprehensive molecular structure modification on the matrix resin and curing agent, resulting in significant changes in the cross-linking structure of the coating. The cross-linking density of the prepared coating is greatly enhanced, and it can withstand high temperatures of 250 ℃. At the same time, it has excellent resistance to strong acids or alkalis.