Scratch-resistant black ink for matte insulating high-shading electronic film

Abstract

The invention relates to the technical field of fine chemical engineering, in particular to scratch-resistant black ink for a matte insulating high-shading electronic film, which is prepared from thefollowing raw materials in parts by weight: 60-70 parts of solvent, 1-2 parts of delustering agent, 1-2 parts of wetting dispersant, 3-6 parts of carbon black, 10-15 parts of polyurethane resin, 2-3 parts of thermal expansion microspheres and 3-6 parts of butyl glycidyl ether. According to the invention, the use of matt powder in the formula can be greatly reduced, the part protruding out of the ink film layer has excellent scratch resistance, and the problem that matt insulating black ink is not scratch-resistant can be well solved. Relatively good adhesive force can be achieved by using relatively small amount of resin. The problems of low insulativity and easy reverse adhesion of the original scheme can be solved. The resistance of the printed electronic film can be effectively improveddue to the facts that a plurality of tiny holes are generated between the first ink layer and the second ink layer due to unevenness and a large number of tiny holes caused by expansion microspheresexist in the ink layer. The ink consumption of customers can be saved, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a black ink for a scratch-resistant matte insulating high-shading electronic film. Background technique [0002] The existing matte electronic insulating black ink uses a large amount of matte powder (silicon dioxide) in order to achieve a matte effect with a glossiness of 0 (tested at a 60-degree angle of the gloss meter). A large amount of matte powder causes more matte powder after ink film formation It floats on the surface of the ink layer and is not highly combined with the resin components of the ink. Lightly scratched by nails will cause obvious scratches. At the same time, in order to achieve high shading requirements, a large amount of carbon black is also added to the formula. Strictly speaking, carbon black and silicon dioxide are not high insulating substances. The ink needs to achieve matte and high shading performance. The carbon black in the ink formula sh...

AI Technical Summary

Problems solved by technology

Strictly speaking, carbon black and silicon dioxide are not high insulating substances. The ink needs to achieve matte and high shading performance. The carbon black in the ink formula should basically reach more than 12%, and the silicon dioxide should basically reach more than 1%. Such a conventional formula It is impossible to achieve a resistance greater than 10 12 In order to achieve the corresponding covering rate, the thickness of the ink is generally 2 microns or above. Matt powder and carbon black are both high oil absorption powder substances. In order to balance the adhesion requirements of the ink formula to the PET printing substrate, a large amount must be added Polyurethane or polyester resin improves adhesion, polyester or polyurethane resin is more viscous, and it is easy to reverse stick when the printing ink layer is thicker than 2 microns