Preparation method of acidification-resistant Xuan paper

The invention provides a preparation method of acidification-resistant Xuan paper. The method includes firstly, preparing a gelatin-alum matrix liquid from deionized water, gelatin and alum; preparinga cross-linking mixed solution by taking hydrolyzed protein, ethylene glycol diglycidyl ether and water as raw materials; adding a monomer into the cross-linked mixed solution serving as a matrix toprepare a cross-linked matrix emulsion; mixing magnesium oxide, water and sodium hydroxide as raw materials to prepare acidification-resistant modifying particles; mixing the gelatin-alum matrix liquid, the cross-linked matrix emulsion and the acidification-resistant modifying particles, and homogenizing to prepare a sizing agent; performing sizing treatment on a Xuan paper matrix, airing and drying to obtain the acidification-resistant Xuan paper. The preparation method not only can effectively improve the color fastness of the Xuan paper in use, but also can reinforce cellulose in the Xuan paper material, so that the