What is SWCNT slurry?

SWCNT slurry is a liquid dispersion of single-walled carbon nanotubes that simplifies processing and provides stable, uniform conductivity in target materials.

How does SWCNT slurry improve conductivity compared with carbon black?

Because of the high aspect ratio and intrinsic conductivity of SWCNTs, target resistivity is achieved at much lower loading than with conventional carbon black.

Which applications commonly use SWCNT slurry?

Typical uses include ESD and antistatic plastics, conductive and shielding coatings, printed electronics and battery electrodes.

How do I process SWCNT slurry in my formulation?

The slurry can be incorporated with high-shear mixing, ultrasonic dispersion or standard compounding so that SWCNTs form a continuous conductive network.

What is the difference between SWCNT slurry and CNT powder?

Slurry is pre-dispersed and resists agglomeration, enabling lower CNT dosage and more reproducible conductivity than dry CNT powder.

When Not to Use PB28 Cobalt Blue Pigment: Limitations and Alternatives-Hunan Kela Materials Co. LTD

Home / Technical Insights/ Inorganic Pigments/ PB28 cobalt blue/ When Not to Use PB28 Cobalt Blue Pigment: Application Limitations and Trade-Offs

When Not to Use PB28 Cobalt Blue Pigment: Application Limitations and Trade-Offs

发布时间：2025-12-17Hit：18

WHEN NOT TO USE PB28 COBALT BLUE PIGMENT

PB28 Cobalt Blue is a high-performance inorganic blue pigment based on a cobalt aluminate spinel structure. It is widely used in applications requiring high thermal stability, chemical resistance, and long-term color durability. However, no pigment is universally suitable for all applications. In certain scenarios, PB28 may not be the optimal choice due to cost, processing conditions, or functional requirements.

WHY APPLICATION CONTEXT MATTERS IN PIGMENT SELECTION

Selecting a pigment requires balancing performance requirements, processing conditions, cost constraints, and regulatory considerations. While PB28 Cobalt Blue offers excellent durability, there are specific scenarios where its use may not be technically or economically justified.

COST-SENSITIVE APPLICATIONS

PB28 is a cobalt-based inorganic pigment and typically carries a higher cost compared with organic blue pigments or iron oxide alternatives. In applications where color durability and long service life are not critical, lower-cost pigments may provide sufficient performance.

For disposable products, short-life consumer goods, or applications with minimal exposure to heat, chemicals, or weathering, PB28 may not offer a favorable cost-to-performance balance.

LOW-TEMPERATURE AND MILD PROCESSING CONDITIONS

PB28 is designed for high-temperature and harsh processing environments. In low-temperature systems such as certain water-based coatings, inks, or decorative applications processed below approximately 200°C, its advanced thermal stability may be unnecessary.

In these cases, organic blue pigments can often deliver adequate color strength, brightness, and dispersion at lower cost and with simpler processing requirements.

APPLICATIONS REQUIRING HIGH TRANSPARENCY OR HIGH TINTING STRENGTH

Organic blue pigments generally provide higher tinting strength and greater transparency than inorganic pigments. For applications where vivid coloration, transparency, or strong chroma at very low pigment loading is required, PB28 may not be the preferred option.

This is particularly relevant in transparent coatings, specialty inks, or appearance-driven applications where durability demands are limited.

ULTRA-FINE OR NANO-SCALE DISPERSION REQUIREME

FOR DETAILED MATERIAL SPECIFICATIONS, SEE:

https://www.greatkela.com/en/use/Pigments/pb_28_cobalt_aluminate/162.html

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