The application discloses a kind of deep matting outdoor
polyester resin
powder coating and preparation method thereof, it is related to
powder coating technical field.The
coating includes the following weight parts components: saturated end carboxyl
polyester resin 50-70 parts, polyhedral oligomeric
silsesquioxane hollow
mesoporous silica hybrid matting agent 2-8 parts, polysiloxane 0.5-3 parts, curing agent 3-8 parts, filler 10-30 parts, leveling agent 1-5 parts, degassing agent 0.5-3 parts,
pigment 5-15 parts, auxiliary agent 0.5-3 parts;The
hybrid matting agent is grafted amino cage
silsesquioxane and is hollow
mesoporous silica by
titanium ester lipophilic end-capped.The coating can effectively inhibit matting agent high-temperature agglomeration and pore hygroscopicity by the synergistic effect of three-dimensional
hybrid skeleton steric hindrance, mesoporous channel multiple scattering and shell end-capped micro-isolation, so that product has extremely low gloss, smooth and delicate leveling appearance, high
mechanical strength and excellent outdoor long-acting
weather resistance.