The additives for Polyurethane
The polyurethane foam industry is facing new challenges regarding flame retardants, required to provide reduced toxicity and improved sustainability. With the aim of combining the request for fire safety, impact on health, high performance and easy chemical handling, REPI presents the brand new antiFIAMMA range, a specific line dedicated to selfextinguishing flame retardants. antiFIAMMA REPITAN MELAMINE DISPERSIONS (antiFIAMMA MD) are liquid blends of pure melamine powder dispersed in polyols and tailored to meet the strict fire resistance requirements in the PU flexible foam polyurethane market like the Crib 5 level (BS 5852 test method) in furniture applications, including beds and mattresses which have been tested to pass UK Fire Regulations 1988 or the California Technical Bulletin 117 law published in 2013. antiFIAMMA MD are as well successfully added to PU rigid foams for building and construction applications that need to meet the class B2 fire behavior level (DIN 4102 test method). REPI grinding process of the melamine powder dispersed in polyol greatly enhance the intrinsic fire resistance performance in the final product by increasing the contact surface of the active flame retardant with the polyurethane foam. antiFIAMMA MD show a considerable contribution to the formation of a char layer in the intumescent process. The char layer acts as a physical barrier between oxygen and polymer decomposition gases. At temperature higher than 200 °C, melamine sublimates diluting fuel gases and oxygen near the combustion source. Melamine absorbs a lot of heat, acting as a heat sink in fire situations. Uncontrolled dust suspensions are a recurring issue faced by most operators working with powders. Airborne melamine particle dust can be prevented by using antiFIAMMA MD thus taking a step towards an improved and safer workplace. antiFIAMMA MD are not in airborne form and therefor are safer than powders. They can be used in combination with other flame retardants like TCPP or other halogen free products.
BENEFITS
Strong effectiveness in fire resistance
Intumescent behaviour enhancement
Easy handling – no dust
Improved safety of working conditions
Compatible with ether and ester PU systems
Easy blending with polyol
Low viscosity
PACKAGING
Standard packaging: 200 Kg drums and 1000 Kg IBC
TYPICAL PROPERTIES
Appearance: liquid
Colour: white
Density g/cm3 at 20 °C: 1,10 to 1,40
Viscosity at 20 °C: 5000 to 15000 cP
Water content %: <0.40
OH number mgKOH/g: 15 to 400
Melamine content: 30 to 50%
Particle size: <40 μm
Shelf life in sealed container: 3 months
DOSING
Suitable for standard liquid dosing units *4-8% on polyol
Can be dosed alone or premixed with standard polyols
LDR on polyol: 10 to 40%
ENVIRONMENT AND LEGISLATION
REACH and ROHS compliance
Low fogging
Low VOC emissions
Halogen free
Meet fire resistance requirements such as Crib 5 level (BS 5852 test method) in furniture applications, including beds and mattresses tested to pass UK Fire Regulations 1988 or the California Technical Bulletin 117 law published in 2013.
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