Solder resist ink, preparation method thereof and circuit board

The invention is applicable to the technical field of circuit board processing, and provides solder resist ink, a preparation method thereof and a circuit board. The solder resist ink comprises the following components: epoxy acrylic resin, carboxyl acrylic resin, an ultraviolet curing monomer, a solvent, a photoinitiator, triglycidyl isocyanurate, an anti-yellowing agent, a functional additive and a pigment filler. After being baked and cured, the solder resist ink provided by the invention not only has higher hardness and is not easy to yellow, but also has the characteristics of thick printing, strong covering power, strong pattern stereoscopic impression, good glossiness and the like, and is very suitable for surface spraying of lamp strip type flexible circuit boards such as LED lampsand the like, besides, the raw material selection of the solder resist ink meets the standards of rohs, reach, HF and the like, and the solder resist ink can be widely applied to the industry of circuit board production and