Sodium antimonate is commonly used as a flame retardant in polymers due to its ability to suppress combustion and reduce the flammability of materials. Here’s how it is used in polymers:

Flame Retardancy

Sodium antimonate functions as a flame retardant by releasing water vapor and other non-combustible gases when exposed to heat or flame. These gases dilute the oxygen and volatile flammable gases in the vicinity of the polymer, slowing down or inhibiting the combustion process. This property is particularly important in polymers used in applications where fire safety is a concern, such as in construction materials, textiles, and electrical devices.

Enhanced Thermal Stability

Sodium antimonate can also improve the thermal stability of polymers, reducing their tendency to degrade at elevated temperatures. This is beneficial in applications where polymers are exposed to high temperatures during processing or use.

Smoke Suppression

In addition to reducing flammability, sodium antimonate can also help suppress smoke generation during combustion. This is important for improving visibility and reducing the inhalation of toxic smoke in the event of a fire involving polymer materials.

Compatibility and Processing

Sodium antimonate is generally compatible with a wide range of polymers and can be easily incorporated into polymer formulations during the manufacturing process. It is often added in small quantities to achieve the desired level of flame retardancy without significantly affecting other properties of the polymer, such as mechanical strength or appearance.

Overall, the use of sodium antimonate as a flame retardant in polymers helps enhance the fire safety and performance of various polymer-based materials, making them suitable for use in a wide range of applications across industries such as construction, automotive, electronics, and textiles.