Application of a Novel DOPO-Based Polymeric Phosphate Flame Retardant for Polycarbonate/Acrylonitrile-butadiene-styrene Alloy

Abstract:

A novel flame retardant additive, DOPO-based polymeric phosphate (PFR-D), which simultaneously contained phosphorus and sulfur, was synthesized from 9,10-dihyro-9-oxa-10-phosphaphnanthrene-10-oxide (DOPO), POCl₃ and bisphenol S. And the structure of PFR-D has been characterized by ¹H-NMR, ³¹P-NMR and FT-IR. PFR-D was used as additive in polycarbonate/acrylonitrile-butadiene-styrene alloy (PC/ABS). The UL94 V-0 rating was achieved by addition of 5-7% PFR-D in PC/ABS, the LOI reached 27.5%. The thermal degradation of PFR-D and polymers with it was investigated by TGA, and the results showed that addition of PFR-D apparently changed the pyrolysis pathways of PC/ABS. The TGA curves indicated that the flame retardant effect was attributed to promoting the char yield by involving the polymer in charring.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 253-256
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.253
• Online since: August 2014
• Authors: Li Yan*, Ji Meng Sang
• Keywords: DOPO, Flame Retardant, PC/ABS, Phosphorus, Polymeric

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