Building exterior wall coating with good weather resistance and exterior wall coating construction process

[0043] Embodiment 1, is a kind of good weather resistance architectural exterior wall paint disclosed by the present invention, comprises the coating for the first topcoat layer and the coating for the second topcoat layer, and the coating for the first topcoat layer comprises the following groups by weight: Minute:

[0044] components parts by weight components parts by weight Polyacrylate Emulsion 55 magnesium hydroxide 2.1 calcium bicarbonate 12 Sodium lignosulfonate 0.65 Polyacrylamide Resin Particles 6.5 AMP-95 0.33 polyvinyl alcohol 3 ASE 0.67 Propylene Glycol 1.5 Quartz sand 7.5

[0045] The particle size of polyacrylamide resin particles is 0.1mm; the particle size of quartz sand is 1.5mm;

[0046] The coating for the second topcoat layer comprises the following components by weight:

[0047] components parts by weight components parts by weight PTFE emulsion 55 UV-O 0.45 Titan

[0057] Embodiment 2, is a kind of good weather resistance architectural exterior wall paint disclosed by the present invention, comprises the coating for the first topcoat layer and the coating for the second topcoat layer, and the coating for the first topcoat layer comprises the following groups by weight: Minute:

[0058] components parts by weight components parts by weight Polyacrylate Emulsion 65 magnesium hydroxide 3 calcium bicarbonate 15 Sodium lignosulfonate 0.8 Polyacrylamide Resin Particles 8 AMP-95 0.375 polyvinyl alcohol 4 ASE 1.125 Propylene Glycol 2 Quartz sand 10

[0059] The particle size of polyacrylamide resin particles is 0.1mm; the particle size of quartz sand is 1.5mm;

[0060] The coating for the second topcoat layer comprises the following components by weight:

[0061]

[0062]

[0063] An exterior wall coating construction process, the specific process steps are the same as in Examp

[0064] Embodiment 3, is a kind of good weather resistance architectural exterior wall paint disclosed by the present invention, comprises the coating for the first topcoat layer and the coating for the second topcoat layer, and the coating for the first topcoat layer comprises the following groups by weight: Minute:

[0065] components parts by weight components parts by weight Polyacrylate Emulsion 45 magnesium hydroxide 1 calcium bicarbonate 10 Sodium lignosulfonate 0.4 Polyacrylamide Resin Particles 5 AMP-95 0.25 polyvinyl alcohol 2 ASE 0.25 Propylene Glycol 1 Quartz sand 5

[0066] The particle size of polyacrylamide resin particles is 0.1mm; the particle size of quartz sand is 1.5mm;

[0067] The coating for the second topcoat layer comprises the following components by weight:

[0068] components parts by weight components parts by weight PTFE emulsion 40 UV-O 0.3 Titanium dioxid