Flamtard S flame retardant synergist

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. 

 

 


Chemical name Zinc Stannate Chemical formula ZnSnO3
Molecular weight 232.15 C.A.S. number 12036-37-2

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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