Tentative links between thermal diffusivity and fire-retardant properties in poly(methyl methacrylate)-metal oxide nanocomposites

被引：31

作者：

Friederich, Blandine ^{[1
,2
]}

Laachachi, Abdelghani ^{[1
]}

Ferriol, Michel ^{[2
]}

Ruch, David ^{[1
]}

Cochez, Marianne ^{[2
]}

Toniazzo, Valerie ^{[1
]}

机构：

[1] Ctr Rech Publ Henri Tudor, Dept Adv Mat & Struct, L-4002 Esch Sur Alzette, Luxembourg

[2] Univ Paul Verlaine Metz, LMOPS, Ex UMR CNRS 7132, Dept Chim IUT Moselle Est, F-57503 St Avold, France

来源：

POLYMER DEGRADATION AND STABILITY | 2010年 / 95卷 / 07期

关键词：

Poly(methyl methacrylate); PMMA; Fire-retardant; Thermal diffusivity; Nanocomposites; Metal oxide nanoparticles; FLAMMABILITY PROPERTIES; HEAT RELEASE; STABILITY; POLYMER; NANOPARTICLES; AL2O3; DEGRADATION; TIO2;

D O I：

10.1016/j.polymdegradstab.2010.04.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Possible relationships between fire-retardant properties and thermal diffusivity for poly(methyl methacrylate) (PMMA) filled by melt blending with titanium dioxide (TiO2), alumina (Al2O3) and boehmite (AlOOH) were investigated for a better understanding of the mode of action of metal oxides as fire-retardants (FR) in PMMA. Fire-retardancy was measured with a cone calorimeter and thermal diffusivity (a) by Laser Flash Analysis (LFA). LFA measurements have shown that heat dispersion is higher with titanium dioxide and boehmite than with alumina despite a larger surface area. For thermal diffusivity, discrepancies between the different nanofillers were only visible from 10 wt% onwards. Thermal degradation of PMMA-oxide nanocomposites and their thermal diffusivity could be linked. Moreover, a bi-linear relationship between the peak of heat release rate (pHRR) and the average of heat release rate (AHRR) showed the occurrence of a barrier effect. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1183 / 1193

页数：11

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