Flame retardancy and its mechanism of polymers flame retarded by DBDPE/Sb2O3

Abstract

The flammability characterization and thermal composition of polymers flame retarded by decabromodiphenylethane (DBDPE) and antimony trioxide (Sb 2 O 3 ) were studied by cone calorimeter and thermogravimetry (TG). The results show that ABS/DBDPE/Sb 2 O 3 has the similar flammability parameters and thermal composition curves to ABS/DBDPO/Sb 2 O 3. It suggests that DBDPE/Sb 2 O 3 has the similar flame retardant behavior to DBDPO/Sb 2 O 3 . The heat release rate (HRR) and the effect heat combustion (EHC) curves of polymers flame retarded by DBDPE/Sb 2 O 3 all decrease, but the mass loss rate (MLR) curve slightly increase. It shows that the decrease of HRR is not due to the increase of char formation ratio but the generation of incombustible gases. The major flame retardant mechanism of DBDPE/Sb 2 O 3 is gas phase flame retardant mechanism. Increasing content of Sb 2 O 3 in DBDPE/Sb 2 O 3 can improve the flame retardant property and thermal stability of acrylonitrile butadiene styrene. Sb 2 O 3 has a good synergistic effect with DBDPE.

Use of zinc borate as the third component of a traditional brominated flame retardant system in acrylonitrile butadiene styrene

“…Loading the traditional BFR/AO flame retardant system in ABS resulted in the expected V‐0 rating and a high LOI value of 30%. In the literature , this very efficient flame retardancy is explained as the ability of BFR scavenging H• radicals in the gas phase resulting in released hydrogen bromide (HBr) and also promoting charring in the condensed phase. Additionally, insertion of AO with BFR results in better flame retardancy by forming antimony tribromide, which is a more active radical scavenger than HBr.…”

“…In order to heal high flammability of ABS, halogenated, organophosphorus, and intumescent flame retardant compounds are utilized . Literature survey shows that addition of aromatic brominated flame retardants (BFR) with or without the contribution of antimony trioxide (AO) improves the flame retardancy of ABS remarkably. BFR can improve both gas phase and condensed phase flame retardancy by releasing Br radicals that could interact with ABS chains to form char and scavenge H• radicals.…”

“…Zuo et al . showed that loading decabromodiphenyl ethane with AO into ABS decreases the heat release rate remarkably and increasing the AO amount extends the efficiency of flame retardancy.…”

Sustainable Green Pavement Using Bio-Based Polyurethane Binder in Tunnel

“…; Graham [7] used halogen flame retardant; Slusher et al [8] used intumescent flame retardants. In order to determine the flame retardant and mechanism of asphalt synergistic flame retardant by decabromodiphenyl ethane (DBDPE) and Sb 2 O 3 , Zuo et al [9] studied the effects of DBDPE and Sb 2 O 3 on the flame retardant and thermal decomposition characteristics of SBS asphalt. The test used was based on the results of the limiting oxygen index test, the smoke density test, and the thermal gravimetric and differential thermal test.…”

Fire retardant synergism of hydroquinone bis(diphenyl phosphate) and novolac phenol in acrylonitrile–butadiene–styrene copolymer

“…Flame retardants for ABS are commonly halogen-containing compounds. For example, brominecontaining compounds, such as hexabromocyclododecane, tetrabromobisphenol-A bis(dibromopropyl ether), decabromodiphenyl ether, decabromdiphenylethane, have been regarded as ideal flame retardants for ABS resin [3][4][5]. Although halogen-containing flame retardants have shown remarkable efficiency, there exists a need for the development of systems that generate less corrosive gases during the combustion process.…”