Weather-resistant type coating material of acrylic acid-polyester powder modified by inorganic nano composite material, and its prepn. method

[0027]

[0029]

[0032] Preparation method of weather-resistant acrylic-polyester powder coating modified by inorganic nanocomposite material:

[0033] 1. Weigh the nanocomposite material with an average particle size of 10-100nm;

[0034] 2. Mix the nanocomposite material weighed above with filler, hydroxyl polyester resin, acrylic resin, curing agent, auxiliary agent, etc. in a high-speed mixer;

[0035] 3. The above-mentioned mixed materials are transported to the melt mixing extruder by a feeder, pressed into thin slices by a tablet press, cooled, and crushed by a crusher, and then transported to an air classification mill (ACM) for fine grinding, and passed through a cyclone The separator collects most of the crushed semi-finished products, and then removes the sundries and coarse powder through the sieving machine to obtain the finished powder coating, which is then packaged.