A modified polyurethane coating material for a scratch-resistant light guide plate protective film

Abstract

This invention relates to the field of composite coating technology, specifically to a modified polyurethane coating material for a scratch-resistant light guide plate protective film; the modified polyurethane coating material for a scratch-resistant light guide plate protective film is composed of the following components by weight percentage: 30-45% modified polyurethane matrix resin, 16-25% isoborneol acrylate, 8-10.5% double-shell microcapsules, 5-8% hydroxyl-terminated polybutadiene-acrylonitrile copolymer, 3-8% fluorinated nano-silica, 2-4% hydrophobic fumed silica, 3-5% hexamethylene diisocyanate trimer, 0 The invention comprises 0.3-0.7% polyether-modified polydimethylsiloxane, 0.2-0.5% polydimethylsiloxane emulsion, 0.4-1% high molecular weight polyurethane block copolymer, 0.1-0.3% bismuth neodecanoate, 6-12% methyl ethyl ketone (MEK), and 2-4% propylene glycol methyl ether acetate. This invention imparts excellent adhesion, good fingerprint resistance, and superior scratch resistance to the protective film, solving the problem that traditional protective films struggle to balance scratch resistance and protection, and that scratches cannot be repaired. It provides a new solution for light guide plate protective films that combines high transparency, self-healing, and scratch resistance.