Preparation method of water-based nano metal ink

The invention discloses a preparation method of water-based nano metal ink. The preparation method comprises the following steps: selecting raw materials: 20-30 parts of metal pigment, 40-45 parts of water-based polyurethane resin, 5-10 parts of additive improver, 2-4 parts of polyethylene wax and 20-30 parts of deionized water; the metal pigment, the waterborne polyurethane resin, the additive improver, the polyethylene wax and the deionized water are stirred and mixed uniformly, and the waterborne nano metal ink is obtained. The bentonite modifier and the nanometer barium metaborate doped with wollastonite are mutually coordinated and jointly synergic, so that the adhesive force and the easy-to-clean effect of the product are coordinated and improved, and the acid corrosion resistance stability of the product is obviously enhanced. 本发明公开了一种水性纳米金属油墨的制备方法，包括以下步骤：原料的选取：金属颜料20～30份、水性聚氨酯树脂40～45份、添加改进剂5～10份、聚乙烯蜡2～4份和20～30份去离子水；将金属颜料、水性聚氨酯树脂、添加改进剂、聚乙烯蜡和去离子水搅拌混匀，得到本发明的水性纳米金属油墨。本发明通过膨润土改性剂、掺杂硅灰石的纳米偏硼酸钡剂相互协调，共同协效，产品的