Thermal stability and flammability characteristics of ethylene vinyl acetate (EVA) composites blended with a phenyl phosphonate-intercalated layered double hydroxide (LDH), melamine polyphosphate and/or boric acid

被引：123

作者：

Nyambo, Calistor ^{[1
,2
]}

Kandare, Everson ^{[3
]}

Wilkie, Charles A. ^{[1
,2
]}

机构：

[1] Marquette Univ, Dept Chem, Milwaukee, WI 53201 USA

[2] Marquette Univ, Fire Retardant Res Facil, Milwaukee, WI 53201 USA

[3] Univ Bolton, Ctr Mat Res & Innovat, Bolton BL3 5AB, England

来源：

POLYMER DEGRADATION AND STABILITY | 2009年 / 94卷 / 04期

关键词：

EVA; Layered double hydroxide; Melamine polyphosphate; Boric acid; Synergy; FLAME-RETARDANT MECHANISM; RED PHOSPHORUS; DEGRADATION; HYDROTALCITE; POLYSTYRENE; COMBUSTION; BEHAVIOR;

D O I：

10.1016/j.polymdegradstab.2009.01.028

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A phenyl phosphonate-intercalated MgAl-LDH (MgAl-PPh), melamine polyphosphate (MP), and boric acid (BA) were independently and concomitantly added to neat ethylene vinyl acetate (EVA) copolymer at loading fractions of 10% (w/w). The structural morphology of MgAl-PPh was established via powder Xray diffraction (PXRD) and scanning electron microscopy (SEM) while the presence of phenyl phosphonate in the galleries was confirmed by Fourier transform infrared (FTIR). Thermogravimetric analysis (TGA) and cone calorimetry were used to evaluate the thermal stability and flammability behavior of EVA and its composites. While time-to-ignition is greatly reduced for EVA composites compared to the virgin polymer, there are remarkable reductions in the peak heat release rate (PHRR) which relates to a reduction in flame intensity. Synergistic effects were observed in cone calorimetry for the formulation containing MgAl-PPh, MP, and BA. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：513 / 520

页数：8

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