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Indexed by:期刊论文

Date of Publication:2013-12-01

Journal:POLYMER DEGRADATION AND STABILITY

Included Journals:SCIE、EI、Scopus

Volume:98

Issue:12

Page Number:2609-2616

ISSN No.:0141-3910

Key Words:Brucite; Core/shell structure; Flame retardant; Ethylene-vinyl acetate copolymer; Mechanism

Abstract:A novel organic-inorganic hybrid flame retardant consisting of a brucite core and a dodecylamine polyphosphate shell was synthesized by a facile nanoengineering route. The flammability characterization and synergistic flame retardant mechanism of the core/shell flame retardant (CFR) in ethylene-vinyl acetate (EVA) blends had been compared with EVA/physical mixture (PM, with the given proportion of brucite and dodecylamine polyphosphate as well as CFR) and EVA/brucite blends. With the same loading amount (40 wt%) of fillers in EVA, the peak heat release rate and smoke production rate of EVA/CFR blends were significantly reduced to 49% and 48% of that of EVA/PM blends, respectively. Meanwhile, the limiting oxygen index (LOI) was increased up to 32 (14.3% higher than that of EVA/PM blends) and the UL-94 test could achieve the V-0 rating. These remarkable properties were obtained just by nanoengineeing the core/shell structured brucite@polyphosphate@amine hybrid system, facilitating the formation of intact and compact residue with fence structure in process of polymer composite burning. (C) 2013 Elsevier Ltd. All rights reserved.