Coatings prepared from water-based compositions comprise an aqueous solution, emulsion, or dispersion of (a) a water-soluble or water-dispersible polymer or oligomer having at least one anionic moiety which is capable of reacting with an oxazoline or oxazine moiety; (b) a water-soluble or water-dispersible polymer or oligomer having at least one oxazoline or oxazine moiety; and (c) colloidal silica; at least one of the components (a) and (b) further comprising at least one fluoroaliphatic moiety. The coatings have low surface energy and high abrasion resistance.