Fire retardant mechanism in intumescent ethylene vinyl acetate compositions

被引：227

作者：

Riva, A

Camino, G

Fomperie, L

Amigouët, P

机构：

[1] Ctr Cultura Ingn Mat Plast, I-15100 Alessandria, Italy

[2] Politecn Torino, Sede Alessandria, I-15100 Alessandria, Italy

[3] NEXANS NRC, F-69353 Lyon 7, France

来源：

POLYMER DEGRADATION AND STABILITY | 2003年 / 82卷 / 02期

关键词：

EVA; intumescence; ammonium polyphosphate; polyamide; 6; magnesium hydroxide; flame retardancy;

D O I：

10.1016/S0141-3910(03)00191-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The thermal and combustion behaviour of an intumescent fire retardant system based on Polyamide 6 (PA6) and Ammonium Polyphosphate (APP), used to improve flame retardant properties of poly(ethylene-co-vinyl acetate) (EVA), loaded with Mg(OH)(2) (MH) was examined. The study of the interactions between the additives introduced in EVA was focused in particular on the MH-APP interaction. The evolution of water from MH takes place at about 400 degreesC, with a fair overlap with ammonia and water evolution from APP degradation. Ammonia evolution from APP is facilitated by the presence of MH, in their mixture heated alone or in the polymer matrix. UL94 test shows that the interaction between MH and APP modifies the combustion behaviour of the intumescent mixture. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：341 / 346

页数：6

共 13 条

[1] Using polyamide-6 as charring agent in intumescent polypropylene formulations I. Effect of the compatibilising agent on the fire retardancy performance [J].