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Incorporation of a grafted brominated monomer in glass fiber reinforced polypropylene to improve the fire resistance

Abstract : Glass fiber reinforced polypropylene composites have been flame retarded using a brominated acrylate as both monomer (PBB-MA) and polymer (PBB-PA), associated with Sb2O3 (Sb/Br) and Mg(OH)2. We have shown that the brominated monomer can react either by grafting onto the polymer matrix or onto the glass fibers or by polymerizing around the Sb2O3 particles. We have highlighted that the efficiency of this FR system is connected to its high bromine content and to its reactivity with polypropylene. We have observed that grafting of brominated monomer onto glass fibers does not strongly modify the fire properties of the composites. We have demonstrated that the action of PBB-MA/Sb2O3 can be improved in reinforced PP by combination with Mg(OH)2, which delays ignition. Improvement of the fire properties of the composites has been achieved to the detriment of mechanical properties which are strongly affected by the presence of the brominated polyacrylate.
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https://hal.mines-ales.fr/hal-03272058
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Submitted on : Monday, June 28, 2021 - 10:07:41 AM
Last modification on : Tuesday, July 13, 2021 - 3:09:32 AM

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Laurent Ferry, Jose Marie Lopez-Cuesta, C Chivas, G Mac Way Hoy, H Dvir. Incorporation of a grafted brominated monomer in glass fiber reinforced polypropylene to improve the fire resistance. Polymer Degradation and Stability, Elsevier, 2001, 74 (3), pp.449-456. ⟨10.1016/S0141-3910(01)00182-3⟩. ⟨hal-03272058⟩

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