The rapidly growing global e-mobility industry requires new, innovative flame retardants and demand keeps increasing massively
Compared to classic cars with combustion engines,
more
ECHA Suggestion of classification, labelling and also restriction of selected chlorinated flame retardants paves the way for an increased need for halogen free flame retardants
The European Chemicals Agency ECHA recently propos
more
The Working Group „Flame Retardants“ brings together many participants from the flame retardants value chain and celebrates Prof. Manfred Döring’s well-deserved retirement
Finally, the meeting of the working group “F
more
“ECOFRAM" addresses the need for more sustainable flame retardants and showcases developments from science and industry
The International Conference on Eco-Friendly Flame
more
RoHS: Impact study finds positive results, review process has started
The importance of RoHS, the restriction of hazardo
more
“Fire Resistance in Plastics" addresses the need for flame retardants for e-mobility – halogen-free solutions in clear focus
The Fire Resistance in Plastics is one of the most
more
Bromine (chlorine)
Mode of action: interruption of the radical chain mechanism of the combustion process in the gas phase:
The high-energy OH and H radicals formed by chain branching in the fire are removed by the halogen-containing flame retardant as follows:
2. Formation of hydrogen halides (HX)
1. Release of halogen radicals (X*=Cl*, Br*) from the flame retardant (R-X)
3. Neutralization of energy-rich radicals
Important brominated flame retardants are:
Tetrabromobisphenol A (TBBA). It is mainly used as a reactive component in printed circuit boards.
Decabromdiphenyl ether (Deca-BDE). It is a universally used flame retardant for all plastics and textiles. In Europe, however, it has been banned for the electrical/electronics sector (RoHS Directive). In the USA, the production of Deca-DBE will be discontinued soon.
Hexabromcyclododecane (HBCDD) is mainly used in polystyrene foams (EPS ans XPS). For environmental and health reasons, it will no more be used in Europe as of 2015 (REACh).
The most important chlorinated flame retardants are:
Dedecachloropentacyclooctadecadiene (Dechlorane) is used in polyamides.
Chloroparaffins are used as liquids in thermoplastics, thermosets and elastomers.