Influence of modified rheology on the efficiency of intumescent flame retardant systems

被引：46

作者：

Anna, P

Marosi, G

Csontos, I

Bourbigot, S

Le Bras, M

Delobel, R

机构：

[1] Budapest Univ Technol & Econ, Organ Chem Technol Dept, H-1111 Budapest, Hungary

[2] USTL, Ecole Natl Super Chim Lille, F-59652 Villeneuve Dascq, France

来源：

POLYMER DEGRADATION AND STABILITY | 2001年 / 74卷 / 03期

基金：

匈牙利科学研究基金会;

关键词：

polyolefins; intumescence; flame retardants; boroxo siloxane; thermal scanning rheometry;

D O I：

10.1016/S0141-3910(01)00180-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Optimal concentration of boroxo siloxane elastomer synergist was determined by LOI and cone calorimetric measurements on ammonium polyphosphate and pentaerythritol containing intumescent flame retardant for polypropylene. The increased viscosity of the melt and plasticity of intumescent char due to boroxo siloxane elastomer could be proved by a thermal scanning rheometric investigation. It is presumed, the increased melt viscosity is created by the product of boroxo siloxane-pentaerythritol, formed during the compound preparation, while the improved char plasticity is the result of product formed at high temperature from boroxo siloxane and ammonium polyphosphate. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：423 / 426

页数：4

共 14 条

[1] 4A zeolite synergistic agent in new flame retardant intumescent formulations of polyethylenic polymers - Study of the effect of the constituent monomers [J].