Polyvinylidene Fluoride (pvdf) Coating Technology

Polyvinylidene fluoride (PVDF) coating has been widely used in the exterior decoration of all kinds of architectures for more than 35 years because of its superiority of weathering durability. Dispersion of PVDF resin into the certain latent solvent and incorporation of modified resins, pigments, additive can get the dispersion paint, which can fuse and form a layer of continuous and compact film on the base metal after baking and heating. Besides its well machinability, this kind of coating layer is resistance to staining, excellent in gloss and color retention and chemical resistance. Therefore it can be extensively applied under diversified complicated and harsh climates and circumstances.The research on the dispersibility and stability of PVDF shows that the solvent system and modified resin have greater influence on the performance of the coatings and film. The relative data of viscosity and shearing force can be major basis to distinguish the features of coatings.Because the contents of methylol acrylamide and acrylic acid in primer coating and the proportion of acrylic resin and epoxy resin have a bigger impact on the performance of coatings film, the appropriate selection of the resins and pigments is required to ensure the properties of PVDF paint meeting with the relevant standards.