20150368390 | FLUORINE-CONTAINING POLYMER MICROSPHERE - Disclosed in the invention is a fluorine-containing polymer microsphere. A polymerization monomer, a photoinitiator and a stable dispersant are added into a reaction kettle, carbon dioxide gas is introduced for emptying air therein, then liquid carbon dioxide is injected, an initiating light source is used for irradiating in the reaction kettle after the temperature and pressure of the reaction kettle are constant, the reaction is performed under the conditions of −20-30° C. and 20-70 bar, wherein the concentration of the polymerization monomer accounting for the total volume of the reactants is 0.02-2 g/ml, and the weight ratio of the photoinitiator, stable dispersant and polymerization monomer is (0.3-10):(2-20):100; after the reaction is finished, the temperature returns to room temperature, and the precipitate is washed with liquid carbon dioxide, so as to obtain the polymer microspheres. The fluorine-containing polymer which covers the surface of the microspheres in the present invention can reduce the surface energy thereof, and can benefit the timely migration of the microspheres to the coating surface; a tertiary amine group is introduced into the fluorine-containing polymer to firmly bond the microspheres into a cross-linked network, and thus benefits the tight integration of the microspheres and the coating; a RAFT active group is introduced to firmly anchor the microspheres onto the coating film; thus ensuring the stability of the cured coating. | 12-24-2015 |