Name: Sepiolite Fiber Thickener SF-100
Brand: Coatingsink
SKU: sepiolite-fiber-thickener-sf100
Availability: InStock

Question 1

How does sepiolite thickening differ from HEUR or HASE associative thickeners?

Accepted Answer

Sepiolite is a fibrous inorganic mineral that builds a physical fiber-network structure giving true thixotropy independent of shear rate history. Unlike associative thickeners, its viscosity recovery is not sensitive to surfactant level or pH swings, making it more robust in high-surfactant waterborne formulations.

Question 2

What is the recommended incorporation method for SF-100 in waterborne coatings?

Accepted Answer

Pre-disperse SF-100 in water (5–15% slurry) under high-speed (1500–2500 rpm) stirring for 15–20 minutes before adding to the grind stage. Direct dry addition to a finished paint typically results in poor fiber wetting and uneven viscosity development.

Question 3

Is SF-100 suitable for high-temperature baking systems such as coil or can coatings?

Accepted Answer

Yes. Sepiolite is thermally stable above 400 °C and does not degrade during stoving cycles up to 250 °C, unlike organic thickeners that can char or cause discoloration at elevated cure temperatures.

Bulk Density	0.20–0.30 g/cm³
pH (10% slurry)	7.5–9.0
BET Surface Area	≥ 150 m²/g
Moisture Content	≤ 10%
Average Fiber Length	2–5 µm

Sepiolite Fiber Thickener SF-100

Specifications

FAQ

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