Abrasion-resistant and thread-explosion-resistant water-based modified polyurethane matt varnish and preparation method thereof

The invention relates to the technical field of matt varnish, and discloses wear-resistant and anti-explosion waterborne modified polyurethane matt varnish and a preparation method thereof.The wear-resistant and anti-explosion waterborne modified polyurethane matt varnish is prepared through the steps that gamma-glycidyl ether oxypropyl trimethoxy silane is sequentially reacted with silicon dioxide and tributyl phosphate to obtain polyhydric alcohol containing silicon and phosphorus, and then the polyhydric alcohol containing silicon and phosphorus is reacted with toluene-2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate to obtain the wear-resistant and anti-explosion waterborne modified polyurethane matt varnish. The preparation method comprises the following steps: carrying out a catalytic reaction on 1, 4-diisocyanate in the presence of dibutyltin dilaurate to obtain a silicon-containing phosphorus-terminated isocyanate prepolymer; the preparation method comprises the following steps: firstly, reacting po