Composite Flame Retardant for TPU

Thermoplastic polyurethane (TPU) is a heat plasticizable elastic polyurethane that combines a number of excellent properties of rubber and plastic. In addition, TPU has excellent abrasion resistance, aging resistance, and high resilience. However, TPU is flammable, with a limiting oxygen index (LOI) of only 16% to 18%, and in the event of fire, it will burn and decompose rapidly, generating large amounts of toxic fumes. It is therefore necessary to carry out flame-retardant treatment for it.

Composite Flame Retardant for TPU

Alfa Chemistry offers composite flame retardant for TPU, the main flame retardant elements of which are phosphorus, nitrogen, etc. This product is suitable for electronic and electrical appliances, wires and cables, soft foam materials, coatings and other fields, with good flame retardant properties and mechanical properties.

Composite Flame Retardant for TPU


AppearanceWhite Powder
Whiteness≥ 93
Phosphorus (P) Content≥ 22%
Decomposition Temperature≥ 280 ℃
Moisture Content≤ 0.05%
Particle Size7 μm D50


Our composite flame retardant for TPU mainly has the following advantages:

  • It does not have stick-slip phenomenon during processing, and does not release gases such as phosphine.
  • It has good flame retardancy and good compatibility with TPU, and can meet the requirements of applications in many fields.

Usage and Dosage

  • Add 5%-10% of this product in polyester TPU to reach UL 94 V-0 rating at 3.2 mm thickness, or 10%-15% to reach UL 94 V-0 rating at 1.6 mm thickness.
  • Add 15%-25% of this product to polyether TPU to reach UL 94 V-0 rating at 3.2 mm and 1.6 mm thickness.

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.