Selecting a blue pigment for high-temperature plastics, industrial coatings, or ceramic ink systems requires more than visual color matching. Thermal stability, chemical resistance, and long-term durability often determine whether a pigment performs reliably in real-world applications.
Organic blue pigments are widely used due to their high tinting strength and bright color appearance. However, their molecular structures are susceptible to thermal degradation and chemical attack.
In processing environments above 250–300°C, organic blue pigments may decompose, leading to color shift, loss of chroma, or reduced service life. In ceramic ink and inorganic systems, organic pigments may also show poor compatibility during firing or long-term exposure.
Common failure mechanisms observed with organic blue pigments include:
Thermal decomposition during high-temperature processing
Color drift or fading under prolonged heat exposure
Limited resistance to acids, alkalis, or solvents
Incompatibility with ceramic firing or inorganic matrices
PB28 Cobalt Blue is an inorganic pigment based on a cobalt aluminate spinel crystal structure. This structure provides intrinsic thermal stability and chemical inertness, allowing PB28 to maintain consistent color performance under harsh processing and service conditions.
Unlike organic pigments, PB28 does not rely on organic molecular bonds that degrade at elevated temperatures. Its inorganic nature makes it suitable for plastics, coatings, ceramics, glass, and ceramic ink systems requiring durability and reliability.
Thermal Stability: PB28 remains stable at temperatures exceeding 300°C, while organic blues often degrade.
Chemical Resistance: PB28 resists acids, alkalis, and solvents; organic pigments show limited resistance.
Color Durability: PB28 maintains long-term color consistency in outdoor and industrial environments.
Ceramic Compatibility: PB28 performs reliably in ceramic and enamel systems where organic pigments fail.
In ceramic ink systems, pigment stability during firing and post-processing is critical. PB28 Cobalt Blue can be supplied with controlled particle size distributions suitable for sub-micron dispersion, enabling stable ink formulation without relying on nano-grade classification.
This makes PB28 a preferred option when organic blue pigments cannot meet processing or durability requirements.
PB28 Cobalt Blue is recommended when applications demand high thermal resistance, chemical stability, and long-term performance. It is particularly suitable for ceramic inks, high-temperature plastics, architectural coatings, and industrial systems where organic blue pigments exhibit failure or instability.
“For a detailed comparison, see: PB28 vs Organic Blue Pigments”
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