Flamtard S is a zinc stannate flame retardant synergist that is safe for human health and the environment, and is increasingly being used in green, “antimony-free” applications, particularly in the electronics industry. It is extremely effective in PVC systems for cable sheathing, epoxy resins for printed circuit boards, polyamides and surface coatings. Flamtard S (zinc stannate) is insoluble in water and thermally stable (no weight loss) at very high temperatures (>400 °C). 

At higher temperatures (400 °C - 600 °C), zinc and tin ions can be volatilised or liberated from their structure to exert catalytic activity. Flamtard S (zinc stannate) is part of a family of n-type wide bandgap semiconductors with a high concentration of free electrons in the conduction band, thus leading to high optical transmissions in combination with electrical conductivity. 

Applications

William Blythe’s Flamtard S (zinc stannate) is ideal for use in applications such as:

Coating Additives

• Smoke suppressant and flame retardant synergist for flame retardant paints.
• Transparent conductive oxide used in the manufacture of films for solar cells, touch screens, and energy efficient glass.

Polymer Additives

• Smoke suppressant and flame retardant synergist with co-flame retardants. For polymer processing at temperatures above 220 °C.
• Co-additive in phosphate flame retardant containing polymer formulations to optimise char formation.

Process Chemicals

• Solid lubricant additive in friction materials.

Product Forms

William Blythe’s Flamtard S (zinc stannate) is available as a powder in both standard and free-flowing grades

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