Studies on Preparation and Performance of Thermoplastic Water-based Fluoropolymer Coatings

Thermoplastic water-based fluoropolymer coatings were prepared from fluoropolymer emulsions with different structures as base materials by adding fillers and additives.The effects of fluoropolymer structure,fluorine content,and pigment/binder ratio of coating on coating performance were investigated.The results show that,with the fluoropolymer synthesized by seed emulsion polymerization at a fluorine mass fraction of 20.50% and the pigment/binder ratio of 0.7,the obtained fluoropolymer coating showed adhension level 2,pencil hardness 3H,positive impact resistance 50 cm,negative impact resistance 45 cm,and crook 2T;no form or falling off was observed after immersing the polymer in 5% HCl for 264 h,in 5% NaOH for 108 h,suggesting good acid or base-resistance.