Composite Flame Retardant for Silicone Rubber

Silicone rubber is an elastomer with a -Si-O- inorganic structure in the main chain of the molecule and organic groups in the side chains. It has good biocompatibility, chemical resistance, high temperature resistance, radiation resistance and excellent electrical properties. However, it is quite flammable and once ignited, it burns rapidly and releases large amounts of heat. Its flammability limits its application in various fields. Therefore, it is important to improve the flame retardant properties of silicone rubber.

Composite Flame Retardant for Silicone Rubber

Alfa Chemistry offers composite flame retardant for silicone rubber that can be used in place of melamine cyanurate and aluminum hydroxide, providing excellent flame retardancy and process performance.

Composite Flame Retardant for Silicone Rubber


AppearanceWhite Powder
Phosphorus (P) Content≥ 12%
Nitrogen (N) Content≥ 20%
Moisture Content≤ 0.5%
Relative Density1.8 g/cm3
Bulk Density0.6 g/cm3
pH6.0-7.5 (10% suspension emulsion at 25 ℃)
Particle Size6-15 μm D50



Our composite flame retardant for silicone rubber mainly has the following advantages:

  • It has little effect on the viscosity of liquid silicone rubber fluids.
  • It can give silicone rubber a UL 94 V-0 rating for flame retardant properties.

Usage and Dosage

Add 20%-25% of this product for silicone rubber to reach UL 94 V-0 rating. This product is susceptible to moisture and should be placed in a cool, dry place. If the package is found to be broken or damp, dry at 100 ℃±10 ℃ for 2 hours before use.

Choose Alfa Chemistry

Alfa Chemistry is one of the leading suppliers of flame retardants worldwide, specializing in the development, production and sales of innovative and highly effective flame-retardant products. Our team consists of technical experts with specialized knowledge and research capabilities, capable of providing you with professional flame-retardant products and solutions. If you have any requirements, please do not hesitate to contact us.

※ Please kindly note that our products and services are for research use only.