Journal
POLYMER DEGRADATION AND STABILITY
Volume 96, Issue 9, Pages 1538-1545Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2011.03.010
Keywords
Polyamide 6; Glass fibre; Alkylphosphinate; Flame retardance
Categories
Funding
- National Science Foundation of China [50933005]
- NSFC
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Aluminum salts of phosphinic acid mixture of diisobutylphosphinic acid and monoisobutylphosphinic acid (HPA-2TBA-Al) and glass fibres were compounded with polyamide 6 to prepare a series of flame retardant GF/PA6 composites via melt blending. The flame retardance and burning behaviors of the composites were investigated by limiting oxygen index (LOI), vertical burning test (UL-94), and Cone calorimeter test. The thermal properties and decomposition kinetics were investigated by thermogravimetric analysis (TGA) under N(2) atmosphere. Addition of HPA-2TBA-Al results in an increased LOI value, a UL-94 V-0 rating together with a decrease in both the values of PHRR and THR in Cone calorimetric analysis. Visual observations and scanning electronic microscopy (SEM) after flame retardant tests confirmed the char-formation which acts as a fire barrier in condense phase. Analysis of cone calorimeter data indicates that gas phase flame retardant mechanism exists in the GFPA6/HPA-2TBA-Al system. (C) 2011 Elsevier Ltd. All rights reserved.
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