Synergy between nanocomposite formation and low levels of bromine on fire retardancy in polystyrenes

被引：34

作者：

Chigwada, G ^{[1
]}

Jash, P ^{[1
]}

Jiang, DD ^{[1
]}

Wilkie, CA ^{[1
]}

机构：

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

来源：

POLYMER DEGRADATION AND STABILITY | 2005年 / 88卷 / 03期

关键词：

polystyrene; nanocomposites; fire retardancy; thermal stability;

D O I：

10.1016/j.polymdegradstab.2004.12.002

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An organically-modified clay has been prepared using ammonium salts which contain an oligomeric material consisting of vinylbenzyl chloride, styrene and dibromostyrene. The presence of dibromostyrene enhances the flame retardancy of polystyrene nanocomposites compared to both the virgin polymer and polystyrene nanocomposites prepared from non-halogen-containing organically-modified clays. The nanocomposites were prepared both by bulk polymerization and melt blending and they were evaluated by X-ray diffraction, transmission electron microscopy, thermogravimetric analysis and cone calorimetry measurements. Bulk polymerization produced nanocomposites with reduced peak heat release rate, reduced total heat release and improved thermal stability. It is noteworthy that all these improvements were obtained with clay loading as low as 3% and bromine content less than 4%. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：382 / 393

页数：12

共 22 条

[1] Polymer-layered silicate nanocomposites: Preparation, properties and uses of a new class of materials [J].