The invention belongs to the technical field of two-dimensional codes, and particularly relates to a two-dimensional code waterborne stereoscopic anti-counterfeit color-changing ink. The ink is prepared from the following components in
mass by percentage: 30% to 50% of aqueous
acrylic resin solution; 15% to 25% of acrylic
emulsion; 5% to 10% of waterborne
polyurethane resin solution; 15% to 25% ofthermochromic
powder; 10% to 20% of
foaming agent; and 1.0% to 3.0% of auxiliaries. The thermochromic
powder is a reversible thermochromic
powder capable of changing from colorless to
colored at 55 DEG C to 75 DEG C, and the
foaming agent is a heat-expandable microcapsule. An anti-counterfeiting mark of the two-dimensional code using the ink (the anti-counterfeiting mark can be letters, numbers,
graphics and the like, and can be connected with a
database of a production company) is not visible at a normal temperature, and presents a three-dimensional shape at a high temperature, and the colorchanges from colorless to
colored, the ink is strong in three-dimension, has clear edges and good friction resistance, is not easy to fall off, and is green and
environmentally friendly. The color isreversible while a bulge is irreversible, and use of two-dimensional code is avoided being stolen while maintaining fun.