A kind of Ludox/polyacrylate dispersion of high silicon content and preparation method thereof

Ludox/polyacrylate dispersion that the invention discloses a kind of high silicon content and preparation method thereof.The method uses water-soluble macromolecule that Ludox is carried out physical modification, modified Ludox and acrylic ester monomer is carried out in-situ polymerization and prepares Ludox/polyacrylate dispersion.In terms of mass fraction, the formula of raw material consists of: deionized water 50～70 parts, Ludox 5～30 parts, water-soluble macromolecule 0.01～0.5 part, acrylic ester monomer 20～53 parts, methacrylic acid or acrylic acid 1～5 parts, emulsifying agent 1～5 parts, initiator 0.1～0.5 part, pH buffer agent 0.1～0.5 part；With SiO 2 Meter, in emulsion, silicone content accounts for the 5～30% of whole solid content；Latex particle size is 60～100nm；Carboxyl on Inventive polymers strand and hydroxyl, SiO 2 The hydroxyl on micelle surface can occur esterification and crosslinking, makes the hardness of film reach more than 5H, and has prominent resistance to water and weatherability.