期刊
POLYMER DEGRADATION AND STABILITY
卷 143, 期 -, 页码 164-175出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2017.07.005
关键词
Poly(ethylene-co-vinyl acetate); Magnesium hydroxide; Graphite; Flame retardancy; Thermal conductivity
This work seeks to address the effect of simultaneous use of three flame retardants, having three different modes of action, (magnesium hydroxide, expanded and expandable graphite) on the thermal degradation and flame retardancy of poly(ethylene-co-vinyl acetate). Thermal conductivity of samples was measured in order to investigate the effect of the use of expanded and expandable graphite on the time-to-ignition and the peals of heat release rate in cone calorimeter test. Thermal shielding performances of chars were studied as well. It was found that there is an optimum ratio between expanded and expandable graphite in order to control thermal conductivity and therefore fire properties. Some correlations were also found between the char thickness and the first peak of heat release rate. (C) 2017 Elsevier Ltd. All rights reserved.
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