▎ 摘　　要

NOVELTY - Graphene oxide modified polymer composite coated controlled-release fertilizer comprises fertilizer core grain and exterior of the bag film. The film is formed by coating emulsion curing. The mass ratio of the coating latex dry matter and fertilizer core particles is 9-11:100. The coating emulsion is graphene oxide/water-based polyacrylate nano composite emulsion. The mass ratio of initiator and graphene oxide/water-based polyacrylate nano composite emulsion is 1: 9-11. The emulsifier and graphene oxide/polyacrylate-based nano composite latex in a mass ratio of 1.8-2.2:1:123-127. USE - Used as graphene oxide modified polymer composite coated controlled-release fertilizer. DETAILED DESCRIPTION - Graphene oxide modified polymer composite coated controlled-release fertilizer comprises fertilizer core grain and exterior of the bag film. The film is formed by coating emulsion curing. The mass ratio of the coating latex dry matter and fertilizer core particles is 9-11:100. The coating emulsion is graphene oxide/water-based polyacrylate nano composite emulsion. The water-base polyacrylate by three kinds of acrylic monomer is polymerized under the action of initiator, emulsifier, quality of the three kinds of acrylic monomer as follows, soft monomer is butyl acrylate hard monomer methyl methacrylate functional monomer alpha -methacrylic acid is 108-112: 88-92:3-4. The initiator is potassium persulfate. The mass ratio of initiator and graphene oxide/water-based polyacrylate nano composite emulsion is 1: 9-11. The emulsifier and graphene oxide/polyacrylate-based nano composite latex in a mass ratio of 1.8-2.2:1:123-127. An INDEPENDENT CLAIM is also included for preparing the graphene oxide modified polymer composite coated controlled release fertilizer comprising (i) preparing raw aqueous based polyacrylate emulsion; preparing graphene oxide/water-based polyacrylate composite emulsion, coating and drying.