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Halogen-based flame retardants (Br-FRs)

Date:2022-5-21 11:55:13 Browse:0
Halogen-based flame retardants (Br-FRs)

The Stockholm Convention (2001) listed 23 organo-halogen chemicals (including all BFRs) to be banned globally. The challenges of finding substitutes for banned halogen-containing flame- retardants include:

A. Lower flame retardancy: Only 10 wt% of BFRs is equivalent to about 30-50% by wt of inorganic FRs

B. High cost: Inorganic FRs is low-cost but require high loading. New HFFRs, on the other hand, are mostly costlier. The cost ratios (£) of BF-FR with phosphorous based and non- phosphorous based HFFR are about 1:6 and 1:2 respectively.

C. Higher thermal stability: Many HFFRs decompose at higher temperature (about 400°C) than their halogenated counterparts (about 3300C).

D. Melt-dripping: Melt dripping occurs with most polymers e.g. polyethylene, polypropylene, PET, ABS and so on. Flammable drips act as secondary ignition sources. FRs should make drips non-flammable.

 

E. Deterioration in Mechanical Properties: The deterioration of mechanical properties increase proportionately with the amount of FR. Therefore, the deterioration is more with less efficient FRs [1].

Novista Group supplies DBDPE, BDDP, FR245, TTBP
, SR130 to global market.

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