The element composition，structure，crystallinity，particle morphology and size distribution of two cobalt blue pigments were investigated by use of EDS，XRD，TEM，FTIR. And the two types of cobalt blue pigments with different morphologies were added into exterior latex paint to examine the tinting strength，viscosity，particle size，compatibility via color spectrophotometer，viscometer，laser particle analyzer. The results showed that the particle size of cobalt blue pigment provided great effects on color performance，the finer the primary particle size，the higher the tinging strength. The better dispersion resulted in better tinting strength. At the same time，narrow particle size distribution led to better aging performanceand weather resistance. The results showed no blistering and discoloration ≤1 grade up to 600 h. The cobalt blue pigment could be used to replace the phthalocyanine blue in outdoor coatings with higher weather resistance to meet the requirements for gloss and color retention.
ZENG Hui-Chong
,
WANG Ai-Di
,
DAO Wen
,
FU Yan
,
ZHANG An-Jie
. Research on Application of Cobalt Blue Pigmentin Exterior Latex Paint[J]. Paint & Coatings Industry, 2019
, 49(12)
: 62
-67
.
DOI: 10.12020/j.issn.0253-4312.2019.12.62
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