Intumescent flame retardant systems of modified rheology

被引：90

作者：

Anna, P

Marosi, G

Bourbigot, S

Le Bras, M

Delobel, R

机构：

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

[2] Ecole Natl Super Arts & Ind Text, F-59056 Roubaix 01, France

[3] USTL, Ecole Natl Super Chim Lille, F-59658 Villeneuve Dascq, France

来源：

POLYMER DEGRADATION AND STABILITY | 2002年 / 77卷 / 02期

基金：

匈牙利科学研究基金会;

关键词：

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

D O I：

10.1016/S0141-3910(02)00040-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：

A model system of intumescent flame retardants, consisting of ammonium polyphosphate and pentaerythritol was prepared and investigated in polypropylene and without the polymer matrix. Thermal scanning oscillation rheometric investigation in the temperature range of 170-500 degreesC was used to detect the rheological behaviour in the region of melting of the polymer and the plasticity of the char formed at higher temperature. Addition of boroxo siloxane to the model system caused advantageous changes in both regions. Increased complex viscosity and viscoelsasticity of the melt and char respectively contributes to better flame retardancy. According to DTG and FTIR studies the reactions of boroxo siloxane with pentaerythritol and ammonium polyphosphate are the reasons for the rheological changes. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：243 / 247

页数：5

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