MODIFIED POLYVINYLIDENE FLUORIDE FLUOROCARBON COATING AND PREPARATION METHOD THEREFOR

摘要

Disclosed is a modified polyvinylidene fluoride fluorocarbon coating, comprising a modified polyvinylidene fluoride resin dispersion comprising the raw materials of, in parts by weight: 30-45 parts of a polyvinylidene fluoride resin, 5-15 parts of a modifying agent, 0.5-1.5 parts of an initiator, 35-60 parts of a solvent, wherein the modifying agent is composed of polyethylene glycol monomaleate and polyethylene glycol methacrylate at a ratio of parts by weight of 1 : 0.5-1.5. The present invention innovatively starts from the point of view of molecular design, wherein the polyethylene glycol monomaleate and polyethylene glycol methacrylate are selected as the modifying agent to endow the polyvinylidene fluoride resin with hydrophilic side bonds, so that the resin matrix is modified from a pure PVDF resin with strong hydrophobicity to a modified fluorocarbon resin with amphiphilicity; furthermore, the modified polyvinylidene fluoride resin dispersion is used as a main film-forming material to obtain a waterborne modified polyvinylidene fluoride fluorocarbon coating having an overall performance comparable to existing solvent-type fluorocarbon coatings.