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|Product Name:||Halogen Free Flame Retardant||Appearance:||White Powder|
|Function:||Non-hygroscopic And Non-flammable||Type:||Intumescent|
|Use::||Epoxy Resins, Textiles, And Coatings||Pure::||≥ 99.0%|
1, Name:APP 201/fine-particle ammonium polyphosphate
2, CAS No.:68333-79-9
4, Fuction:non-hygroscopic and non-flammable
APP is a fine-particle ammonium polyphosphate. The product is largely insoluble in water and completely insoluble in organic solvents. It is white, non-hygroscopic and non-flammable. Whose crystalline is phase II, n>1000.
On account of its low water solubility, APP 201 is particularly suitable as an “acid donor” for intumescent coatings. Other essential components of intumescent systems include a binder, a carbon donor and a blowing agent.
On exposure to flame, intuescent coatings form a carbonaceous foam which effectively shields the underlying material from temperature increases.
Steel structures coated with intumesent paints can meet the requirements of fire resistance classes specified in DIN 4102.
The application of APP based intumescent coatings on wood or plastics enables these materials to qualify for Building Material Class B1 (DIN 4102).
APP imparts a good flame-retardant effect to adhesives and sealants it is incorporated into the base formulation at the rate of 10-20%.
APP is a suitable non-halogenated flame retardant for Polyurethane foams. If handling of APP as a solid is not possible we recommend the dosage of the flame retardant by preparing a APP /polyol-suspension. Because of the low acid value of APP,it is also possible to incorporate this flame retardant in a APP/isocyanate suspension.
To prevent the solids from settling, the APP suspensions be stirred or circulated by pump. The stirrers commonly found in service tanks are adequate for this purpose. With APP, the following classifications can be achieved:
PU rigid foam
(density > 30 kg/m3) DIN 4102-B 2
PU rigid integral skin foam
(density > 200 kg/m3) DIN 4102-B 2/ UL 94-VO
PU/polyester flexible foam
(density > 30 kg/m3) FMVSS 302-SE / UL 94-HF 1
Density at 25 ℃
Solubility in Water
Average Particle Size