Research and Application of Waterborne Thermal Insulation Supporting Coatings System
Waterborne epoxy primer,waterborne thermal insulation intermediate paint and waterborne acrylic topcoat form a thermal insulation supporting coatings system.The performance of the thermal insulation coatings is evaluated by testing the corrosion resistance,aging resistance,thermal insulation and other properties.The results show:waterborne epoxy primer A has a pigment/binder ratio of 0.85;waterborne thermal insulation intermediate paint B is made of glass microspheres with specifications of D90=110 μm and a pigment/binder ratio of 0.77;the hydroxyl value of waterborne acrylic topcoat is 4.2,and the performance of the supporting coatings system is good when n(—NCO)/n(—OH)=1,which takes into account the thermal insulation performance and corrosion resistance.
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